Fixed cycle delay: Difference between revisions

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(Fix bug: Don't clobber Z+N in loops where the only DEX/INX/DEY/INY instruction is a hidden one)
 
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Shortest possible CPU code that creates N cycles of delay, depending on constraints.


== Delay code ==
== Code ==
 
Shortest possible CPU code that creates N cycles of delay, depending on constraints.


All code samples are written for CA65.
All code samples are written for CA65.
Line 8: Line 7:
Assumptions:
Assumptions:
* No page wrap occurs during any branch instruction. If a page wrap occurs, it adds +1 cycle for each loop, completely thwarting the accurate delay.
* No page wrap occurs during any branch instruction. If a page wrap occurs, it adds +1 cycle for each loop, completely thwarting the accurate delay.
* No interrupt / NMI occurs during the delay code. Code samples where an interrupt could cause data corruption are separately indicated.
* No interrupt / NMI occurs during the delay code.
 
It is possible to verify on compile time that no page wrap occurs,
by replacing all branches with these macros:
<pre>.macro branch_check opc, dest
    opc dest
    .assert >* = >(dest), warning, "branch_check: failed, crosses page"
.endmacro
.macro bccnw dest
        branch_check bcc, dest
.endmacro
.macro bcsnw dest
        branch_check bcs, dest
.endmacro
.macro beqnw dest
        branch_check beq, dest
.endmacro
.macro bnenw dest
        branch_check bne, dest
.endmacro
.macro bminw dest
        branch_check bmi, dest
.endmacro
.macro bplnw dest
        branch_check bpl, dest
.endmacro
.macro bvcnw dest
        branch_check bvc, dest
.endmacro
.macro bvsnw dest
        branch_check bvs, dest
.endmacro</pre>


It is permissible for DMA to steal cycles during the loops.
It is permissible for DMA to steal cycles during the loops.
Line 46: Line 14:
in order to get the correct delay.
in order to get the correct delay.


Explanations on the requirements:
=== Explanations on the requirements ===
* @zptemp means you have a zeropage address that you can write random data into.
 
* @rti means you have a dummy interrupt handler installed that does nothing but <code>RTI</code>.
* @rts12 means you know a memory address that contains byte $60 (<code>RTS</code>).
* @rts12 means you know a memory address that contains byte $60 (<code>RTS</code>).
* @rts14 means you know a memory address that contains a harmless 2-cycle instruction that fits your constraints (such as <code>CLC</code>, <code>LDA #0</code>, or <code>NOP</code>), followed by <code>RTS</code>.
cycle instruction that fits your constraints (such as <code>LDA $00</code>), followed by <code>RTS</code>.
* @rts15 means you know a memory address that contains a <code>JMP</code> that jumps to another location that contains <code>RTS</code>. Alternatively, it means you know a memory address that contains a harmless 3-cycle instruction that fits your constraints (such as <code>LDA $00</code>), followed by <code>RTS</code>.
 
* delay_a_25_clocks, delay_256a_16_clocks, delay_256a_x_33_clocks, delay_256a_x_31_clocks, and delay_256x_a_30_clocks are defined at [[Delay code]].
=== Instructions, addressing modes, byte counts, cycle counts and notes ===
* "Unsafe for interrupts" means that even though the S register is not clobbered, data corruption will occur if an interrupt/NMI happens in the middle of the delay code.
 
{| class="wikitable testtable"
! scope="col"| Addressing mode
! scope="col"| Instruction type
! scope="col"| Bytes
! scope="col"| Cycle count
! scope="col"| Example instruction
! scope="col"| Notes
|-
! scope="row"| Implied
! scope="row"| Inter-register
| 1 || 2 || <code>TAX</code> || <code>NOP</code> has no side effects. Flag-manipulations like <code>CLC</code>, and <code>SEC</code><code>CLV</code> are used when their effects are desired.
|-
! scope="row"| Implied
! scope="row"| Stack push
| 1 || 3 || <code>PHA</code> || <code>PHP</code> is only paired with <code>PLP</code>.
|-
! scope="row"| Implied
! scope="row"| Stack pop
| 1 || 4 || <code>PLA</code> ||
|-
! scope="row"| Implied
! scope="row"| Return
| 1 || 6 || <code>RTS</code> || Used indirectly when paired with <code>JSR</code>. Similarly for <code>RTI</code>.
|-
! scope="row"| Immediate
! scope="row"|
| 2 || 2 || <code>CMP #$C5</code> || Includes instructions like <code>LDA</code>, <code>LDX</code> and <code>LDY</code>. Other ALU instructions are used in more complex situations.
|-
! scope="row"| Relative
! scope="row"| Branch
| 2 || 2—4 || <code>BCC *+2</code> || Branch takes 3 cycles when taken, 2 otherwise. A page crossing adds +1 cycle when branch is taken, but because of difficulties setting that up, we don't use it.
|-
! scope="row"| Zeropage
! scope="row"| Read, write
| 2 || 3 || <code>LDA $A5</code>
|-
! scope="row"| Zeropage
! scope="row"| RMW
| 2 || 5 || <code>INC @zptemp</code> || Writing to zeropage is only permitted when @zptemp is available. Technically we could save @zptemp into register and restore at end, but it is bytewise inferior to other techniques.
|-
! scope="row"| Zeropage indexed
! scope="row"| Read, write
| 2 || 4 || <code>LDA $EA,X</code> || Inferior to 2 × <code>NOP</code>, but useful for hiding additional code to be executed in a loop.
|-
! scope="row"| Zeropage indexed
! scope="row"| RMW
| 2 || 6 || <code>INC @zptemp,X</code> || Only doable when X is known to be 0, or when entire zeropage can be clobbered.
|-
! scope="row"| Indexed indirect
! scope="row"| Read, write
| 2 || 6 || <code>STA (@ptrtemp,X)</code> || Only doable when X is known to be 0.
|-
! scope="row"| Indexed indirect
! scope="row"| RMW
| 2 || 8 || <code>SLO (@ptrtemp,X)</code> || The most cost-effective instruction. Only doable when X is known to be 0, lest we write to a random address. All instructions in this category are unofficial.
|-
! scope="row"| Indirect indexed
! scope="row"| Read
| 2 || 5—6 || <code>LDA (@ptrtemp),Y</code> || Never used by this code.
|-
! scope="row"| Indirect indexed
! scope="row"| Write
| 2 || 6        || <code>STA (@ptrtemp),Y</code> || Only doable when Y is known to be 0.
|-
! scope="row"| Indirect indexed
! scope="row"| RMW
| 2 || 8        || <code>SLO (@ptrtemp),Y</code> || All instructions in this category are unofficial.
|-
! scope="row"| Absolute
! scope="row"| Jump
| 3 || 3 || <code>JMP *+3</code> ||
|-
! scope="row"| Absolute
! scope="row"| Read, write
| 3 || 4 || <code>LDA $2808</code> || Inferior to 2 × <code>NOP</code>, but can be used carefully to hide additional code to be executed in a loop.
|-
! scope="row"| Absolute
! scope="row"| RMW
| 3 || 6 || <code>INC $4018</code> || Inferior to 3 × <code>NOP</code>.
|-
! scope="row"| Absolute indexed
! scope="row"| Read
| 3 || 4—5 || <code>LDA $0200,X</code> || Inferior to shorter alternatives.
|-
! scope="row"| Absolute indexed
! scope="row"| Write
| 3 || 5 || <code>STA $0200,X</code> || Inferior to shorter alternatives.
|-
! scope="row"| Absolute indexed
! scope="row"| RMW
| 3 || 7 || <code>INC $4018,X</code> || Only doable when writing into the given address is harmless considering the possible values of X.
|-
! scope="row"| Absolute indirect
! scope="row"| Jump
| 3 || 5 || <code>JMP (@ptrtemp)</code> || Inferior to shorter alternatives.
|}


{{#css:
{{#css:
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=== 3 cycles ===
=== 3 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|1 bytes
!colspan="2"|2 bytes
|-
|<pre>48      PHA</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|2 bytes
|-
|-
|<pre>C5 C5    CMP $C5</pre>||Clobbers Z&N, and C
|<pre>C5 C5    CMP $C5</pre>||Clobbers Z&N, and C
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|-
|-
|<pre>A4 A4    LDY $A4</pre>||Clobbers Y, and Z&N
|<pre>A4 A4    LDY $A4</pre>||Clobbers Y, and Z&N
|-
|<pre>85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
|-
!colspan="2"|3 bytes
!colspan="2"|3 bytes
|-
|-
|<pre>4C xx xx JMP *+3</pre>||Not relocatable code
|<pre>4C xx xx JMP *+3</pre>||No requirements
|-
|-
|}
|}
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=== 4 cycles ===
=== 4 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|1 bytes
|-
|<pre>68      PLA</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|2 bytes
!colspan="2"|2 bytes
|-
|-
|<pre>EA  ... NOP      &times; 2</pre>||No requirements
|<pre>EA  ... NOP      × 2</pre>||No requirements
|-
|-
|}
|}
* zp-indexed modes such as <code>LDA $00,X</code> also do 4 cycles, but having side effects, these two-byte instructions are inferior to a simple 2 &times; <code>NOP</code>.
* zp-indexed modes such as <code>LDA $00,X</code> also do 4 cycles, but having side effects, these two-byte instructions are inferior to a simple 2 × <code>NOP</code>.
* There is also an unofficial opcode <code>NOP $00,X</code> (34 00), but there is no reason to use this instruction when the official equivalent has the same performance.
* There is also an unofficial opcode <code>NOP $00,X</code> (34 00), but there is no reason to use this instruction when the official equivalent has the same performance.


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=== 5 cycles ===
=== 5 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|2 bytes
|-
|<pre>E6 xx    INC @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>EA      NOP
48      PHA</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|3 bytes
!colspan="2"|3 bytes
|-
|-
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|<pre>EA      NOP
|<pre>EA      NOP
A4 A4    LDY $A4</pre>||Clobbers Y, and Z&N
A4 A4    LDY $A4</pre>||Clobbers Y, and Z&N
|-
|<pre>EA      NOP
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA      NOP
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
|-
!colspan="2"|4 bytes
!colspan="2"|4 bytes
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
4C xx xx JMP *+3</pre>||Not relocatable code
4C xx xx JMP *+3</pre>||No requirements
|-
|-
|}
|}
Line 158: Line 196:
=== 6 cycles ===
=== 6 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|2 bytes
|-
|<pre>F6 F6    INC $F6,X</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48  ... PHA      &times; 2</pre>||Clobbers S; and writes in stack
|-
|<pre>EA      NOP
68      PLA</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|3 bytes
!colspan="2"|3 bytes
|-
|-
|<pre>EA  ... NOP      &times; 3</pre>||No requirements
|<pre>EA  ... NOP      × 3</pre>||No requirements
|-
|-
|}
|}
Line 175: Line 204:
* ix instructions like <code>LDA ($00,X)</code> do 6 cycles, but the value of X decides where a pointer is read from, and said pointer can point anywhere. We only do that when the value of X is known.
* ix instructions like <code>LDA ($00,X)</code> do 6 cycles, but the value of X decides where a pointer is read from, and said pointer can point anywhere. We only do that when the value of X is known.
* iy instructions like <code>LDA ($00),Y</code> also do 5-6 cycles, but in addition to the note above, we cannot predict whether a wrap occurs or not. So we don't use this mode.
* iy instructions like <code>LDA ($00),Y</code> also do 5-6 cycles, but in addition to the note above, we cannot predict whether a wrap occurs or not. So we don't use this mode.
* Absolute RMW instructions like <code>INC $4018</code> do 6 cycles, but weighing 3 bytes with side-effects it would be inferior to 3 &times; <code>NOP</code>.
* Absolute RMW instructions like <code>INC $4018</code> do 6 cycles, but weighing 3 bytes with side-effects it would be inferior to 3 × <code>NOP</code>.




Line 183: Line 212:
|-
|-
|<pre>08      PHP
|<pre>08      PHP
28      PLP</pre>||Writes in stack
28      PLP</pre>||No requirements
|-
|<pre>68      PLA
48      PHA</pre>||Clobbers A, and Z&N
|-
!colspan="2"|3 bytes
|-
|<pre>EA      NOP
E6 xx    INC @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>FE 00 02 INC $0200,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|4 bytes
|-
|<pre>18  ... CLC      &times; 2
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 2
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 2
A6 A6    LDX $A6</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A4 A4    LDY $A4</pre>||Clobbers Y, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 2
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|5 bytes
|-
|<pre>EA  ... NOP      &times; 2
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}
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=== 8 cycles ===
=== 8 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|2 bytes
!colspan="2"|4 bytes
|-
|-
|<pre>68   ... PLA     &times; 2</pre>||Clobbers A, S, and Z&N
|<pre>EA   ... NOP     × 4</pre>||No requirements
|-
|-
|}
* Unofficial ix and iy RMW instructions such as <code>SLO ($00,X)</code> or <code>SLO ($00),Y</code> would do 8 cycles for 2 bytes of code. We only do that if we know X or Y to be zero, and we have a known pointer to safely rewritable data.
=== 9 cycles ===
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|3 bytes
|-
|<pre>BA      TSX
68      PLA
9A      TXS</pre>||Clobbers A, X, and Z&N; and unsafe for interrupts
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
F6 F6    INC $F6,X</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
08      PHP
28      PLP</pre>||No requirements
|-
|-
|<pre>EA      NOP
|}
48  ... PHA      &times; 2</pre>||Clobbers S; and writes in stack
* Jumping into the middle of another instruction and thereby reusing code is a very efficient way of reducing code size. Note that all code samples using branches on this page require that no page wrap occurs.
 
 
=== 10 cycles ===
{| class="wikitable testtable"
!colspan="2"|4 bytes
|-
|-
|<pre>AA       TAX
|<pre>08       PHP
68      PLA
C5 C5    CMP $C5
8C      TXA</pre>||Clobbers X, S, and Z&N
28       PLP</pre>||No requirements
|-
|<pre>A8      TAY
68      PLA
98       TYA</pre>||Clobbers Y, S, and Z&N
|-
|-
|}
* The <code>ROL-ROR</code> sequence preserves the original value of the memory address. Carry is also preserved.
=== 11 cycles ===
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|4 bytes
|-
|-
|<pre>EA  ... NOP      &times; 4</pre>||No requirements
|<pre>EA  ... NOP      × 2
08      PHP
28      PLP</pre>||No requirements
|-
|-
|}
|}
* Unofficial ix and iy RMW instructions such as <code>SLO ($00,X)</code> or <code>SLO ($00),Y</code> would do 8 cycles for 2 bytes of code. We only do that if we know X or Y to be zero, and we have a known pointer to safely rewritable data.




=== 9 cycles ===
=== 12 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|3 bytes
|-
|-
|<pre>EA      NOP
|<pre>20 xx xx JSR @rts12</pre>||Requires @rts12
08      PHP
28      PLP</pre>||Writes in stack
|-
|<pre>EA      NOP
68      PLA
48      PHA</pre>||Clobbers A, and Z&N
|-
|-
!colspan="2"|4 bytes
!colspan="2"|4 bytes
|-
|-
|<pre>A2 AE   LDX #$AE  ;hides 'LDX $FDD0'
|<pre>36 36   ROL $36,X
D0 FD   BNE *-1</pre>||Clobbers X, and Z&N
76 36   ROR $36,X</pre>||Clobbers Z&N
|-
|-
|<pre>A0 AC    LDY #$AC  ;hides 'LDY $FDD0'
!colspan="2"|5 bytes
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>08      PHP
E6 xx    INC @zptemp</pre>||Clobbers Z&N; and requires @zptemp
18      CLC
90 00    BCC *+2
28      PLP</pre>||No requirements
|-
|-
|<pre>EA      NOP
|}
FE 00 02 INC $0200,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
* <code>JSR-RTS</code> causes 12 cycles of delay. But it does write a function return address in the stack, which may be unwanted in some applications. S is not modified.
* Again, <code>ROL-ROR</code> does not have side effects (as long as an interrupt does not happen in the middle), except for Z+N.
 
 
=== 13 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|-
|<pre>EA      NOP
|<pre>EA   ... NOP      × 3
FE 00 03 INC $0300,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
08       PHP
28      PLP</pre>||No requirements
|-
|-
|<pre>EA      NOP
|}
FE 00 04 INC $0400,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
 
 
=== 14 cycles ===
{| class="wikitable testtable"
!colspan="2"|4 bytes
|-
|-
|<pre>EA       NOP
|<pre>08       PHP      \ × 2
FE 00 05 INC $0500,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
28      PLP      /</pre>||No requirements
|-
|-
|<pre>EA      NOP
|}
FE 00 06 INC $0600,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
 
 
=== 15 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
FE 00 07 INC $0700,X</pre>||Clobbers Z&N; and requires writable $700-$7FF
BA      TSX
28      PLP
9A      TXS
28      PLP</pre>||Clobbers X
|-
|-
!colspan="2"|5 bytes
|<pre>C5 C5    CMP $C5
20 xx xx JSR @rts12</pre>||Clobbers Z&N, and C; and requires @rts12
|-
|-
|<pre>18  ... CLC      &times; 3
|<pre>24 24    BIT $24
90 00    BCC *+2</pre>||Clobbers C
20 xx xx JSR @rts12</pre>||Clobbers Z&N, and V; and requires @rts12
|-
|-
|<pre>B8  ... CLV      &times; 3
|<pre>A5 A5    LDA $A5
50 00    BVC *+2</pre>||Clobbers V
20 xx xx JSR @rts12</pre>||Clobbers A, and Z&N; and requires @rts12
|-
|-
|<pre>EA  ... NOP      &times; 3
|<pre>A4 A4    LDY $A4
85 xx   STA @zptemp</pre>||Requires @zptemp
20 xx xx JSR @rts12</pre>||Clobbers Y, and Z&N; and requires @rts12
|-
|<pre>EA  ... NOP      &times; 3
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
|-
!colspan="2"|6 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>EA  ... NOP      &times; 3
|<pre>08      PHP
4C xx xx JMP *+3</pre>||Not relocatable code
28      PLP
EA  ... NOP      × 4</pre>||No requirements
|-
|-
|}
|}
* Jumping into the middle of another instruction and thereby reusing code is a very efficient way of reducing code size. Note that all code samples using branches on this page require that no page wrap occurs.




=== 10 cycles ===
=== 16 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|5 bytes
|-
|<pre>48      PHA
08      PHP
28      PLP</pre>||Clobbers S; and writes in stack
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
68  ... PLA      &times; 2</pre>||Clobbers A, S, and Z&N
08      PHP      \ × 2
28      PLP      /</pre>||No requirements
|-
|-
!colspan="2"|4 bytes
|}
 
 
=== 17 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
|-
|-
|<pre>08      PHP
|<pre>08      PHP
C5 C5   CMP $C5
48      PHA
28      PLP</pre>||Writes in stack
A5 A5   LDA $A5
68      PLA
28      PLP</pre>||No requirements
|-
|-
|<pre>26 26    ROL $26
|}
66 26    ROR $26</pre>||Clobbers Z&N
 
|-
 
!colspan="2"|5 bytes
=== 18 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
|-
|-
|<pre>EA  ... NOP      &times; 5</pre>||No requirements
|<pre>EA  ... NOP      × 2
08      PHP      \ × 2
28      PLP      /</pre>||No requirements
|-
|-
|}
|}
* The <code>ROL-ROR</code> sequence preserves the original value of the memory address. Carry is also preserved.




=== 11 cycles ===
=== 19 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>68  ... PLA      &times; 2
|<pre>08      PHP
48       PHA</pre>||Clobbers A, S, and Z&N
28       PLP
20 xx xx JSR @rts12</pre>||Requires @rts12
|-
|-
!colspan="2"|4 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>08      PHP
08      PHP
36 36    ROL $36,X
28      PLP</pre>||Writes in stack
76 36   ROR $36,X
|-
28      PLP</pre>||No requirements
|<pre>EA  ... NOP      &times; 2
68      PLA
48      PHA</pre>||Clobbers A, and Z&N
|-
|<pre>AA      TAX
68      PLA
48      PHA
8C      TXA</pre>||Clobbers X, and Z&N
|-
|<pre>A8      TAY
68      PLA
48      PHA
98      TYA</pre>||Clobbers Y, and Z&N
|-
|<pre>E6 xx   INC @zptemp
F6 F6    INC $F6,X</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|-
|}
=== 20 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>E6 xx   INC @zptemp
|<pre>A9 2A   LDA #$2A ;hides 'ROL A'
EA  ... NOP      &times; 3</pre>||Clobbers Z&N; and requires @zptemp
38      SEC
10 FC    BPL *-2</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>EA  ... NOP      &times; 2
!colspan="2"|7 bytes
FE 00 02 INC $0200,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>EA  ... NOP      × 3
FE 00 03 INC $0300,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
08      PHP      \ × 2
28      PLP      /</pre>||No requirements
|-
|-
|<pre>EA  ... NOP      &times; 2
|}
FE 00 04 INC $0400,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
 
 
=== 21 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>18      CLC
FE 00 05 INC $0500,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>A2 04    LDX #4
FE 00 06 INC $0600,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>A0 04    LDY #4
FE 00 07 INC $0700,X</pre>||Clobbers Z&N; and requires writable $700-$7FF
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|6 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>18  ... CLC      &times; 4
|<pre>08      PHP      \ × 3
90 00    BCC *+2</pre>||Clobbers C
28      PLP      /</pre>||No requirements
|-
|<pre>B8  ... CLV      &times; 4
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 4
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 4
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|7 bytes
|-
|<pre>EA  ... NOP      &times; 4
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}




=== 12 cycles ===
=== 22 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>20 xx xx JSR @rts12</pre>||Requires @rts12; and writes in stack
|<pre>18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
38      SEC
10 FC    BPL *-2</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>68  ... PLA      &times; 3</pre>||Clobbers A, S, and Z&N
|<pre>A2 02    LDX #2
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|-
!colspan="2"|4 bytes
|<pre>A0 03    LDY #3
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>36 36    ROL $36,X
!colspan="2"|7 bytes
76 36    ROR $36,X</pre>||Clobbers Z&N
|-
|-
|<pre>08      PHP
|<pre>08      PHP
E6 xx    INC @zptemp
BA      TSX
28      PLP</pre>||Requires @zptemp; and writes in stack
08      PHP
28  ... PLP      × 2
9A      TXS
28      PLP</pre>||Clobbers X
|-
|-
|<pre>48  ... PHA      &times; 4</pre>||Clobbers S; and writes in stack
|<pre>08      PHP
C5 C5    CMP $C5
28      PLP
20 xx xx JSR @rts12</pre>||Requires @rts12
|-
|-
!colspan="2"|5 bytes
!colspan="2"|8 bytes
|-
|-
|<pre>08      PHP
|<pre>08      PHP      \ × 2
18       CLC
28      PLP       /
90 00    BCC *+2
EA  ... NOP      × 4</pre>||No requirements
28      PLP</pre>||Writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA  ... NOP      &times; 6</pre>||No requirements
|-
|-
|}
|}
* <code>JSR-RTS</code> causes 12 cycles of delay. But it does write a function return address in the stack, which may be unwanted in some applications. S is not modified.
* Again, <code>ROL-ROR</code> does not have side effects (as long as an interrupt does not happen in the middle), except for Z+N.




=== 13 cycles ===
=== 23 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|2 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>00 00   BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
|<pre>18  ... CLC      × 2
A9 2A   LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1</pre>||Clobbers A, Z&N, and C
|-
|-
!colspan="2"|4 bytes
|<pre>EA       NOP
|-
A2 04   LDX #4
|<pre>08       PHP
CA       DEX
F6 F6   INC $F6,X
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
28       PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
68      PLA
48      PHA</pre>||Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48  ... PHA      &times; 2
08      PHP
28      PLP</pre>||Clobbers S; and writes in stack
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
68  ... PLA      &times; 2
A0 04    LDY #4
48       PHA</pre>||Clobbers A, S, and Z&N
88       DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|5 bytes
!colspan="2"|7 bytes
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
28      PLP</pre>||Writes in stack
|-
|<pre>EA  ... NOP      &times; 3
68      PLA
48      PHA</pre>||Clobbers A, and Z&N
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
AA       TAX
08       PHP       \ × 3
68       PLA
28       PLP       /</pre>||No requirements
48       PHA
8C       TXA</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA      NOP
|}
A8      TAY
 
68      PLA
 
48      PHA
=== 24 cycles ===
98      TYA</pre>||Clobbers Y, and Z&N
{| class="wikitable testtable"
!colspan="2"|4 bytes
|-
|-
|<pre>EA      NOP
|<pre>A9 0A   LDA #$0A ;hides 'ASL A'
E6 xx   INC @zptemp
10 FD   BPL *-1</pre>||Clobbers A, Z&N, and C
F6 F6   INC $F6,X</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|-
!colspan="2"|6 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>C5 C5    CMP $C5
|<pre>20 xx xx JSR @rts12× 2</pre>||Requires @rts12
26 26    ROL $26
66 26    ROR $26</pre>||Clobbers Z&N, and C
|-
|-
|<pre>24 24    BIT $24
!colspan="2"|7 bytes
26 26    ROL $26
66 26    ROR $26</pre>||Clobbers Z&N, and V
|-
|-
|<pre>85 xx   STA @zptemp
|<pre>A6 A6   LDX $A6
26 26   ROL $26
A2 04   LDX #4
66 26   ROR $26</pre>||Clobbers Z&N; and requires @zptemp
CA      DEX
D0 FD   BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA  ... NOP      &times; 3
|<pre>A4 A4    LDY $A4
FE 00 02 INC $0200,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
A0 04    LDY #4
|-
88      DEY
|<pre>EA  ... NOP      &times; 3
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
FE 00 03 INC $0300,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|-
|<pre>EA  ... NOP      &times; 3
!colspan="2"|8 bytes
FE 00 04 INC $0400,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|-
|<pre>EA  ... NOP      &times; 3
|<pre>08      PHP
FE 00 05 INC $0500,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
C5 C5    CMP $C5
|-
28      PLP      \ × 2
|<pre>EA  ... NOP      &times; 3
08      PHP      /
FE 00 06 INC $0600,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
28      PLP</pre>||No requirements
|-
|<pre>EA  ... NOP      &times; 3
FE 00 07 INC $0700,X</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
|-
|}
=== 25 cycles ===
{| class="wikitable testtable"
!colspan="2"|7 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>18  ... CLC      &times; 5
|<pre>98      TYA
90 00   BCC *+2</pre>||Clobbers C
A0 04    LDY #4
88      DEY
D0 FD   BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>B8   ... CLV     &times; 5
|<pre>EA   ... NOP     × 2
50 00   BVC *+2</pre>||Clobbers V
A2 04    LDX #4
CA      DEX
D0 FD   BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>4C xx xx JMP *+3
|<pre>EA  ... NOP      × 2
26 26    ROL $26
A0 04   LDY #4
66 26    ROR $26</pre>||Clobbers Z&N; and not relocatable code
88      DEY
|-
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
|<pre>EA  ... NOP      &times; 5
85 xx   STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 5
04 04   NOP $04</pre>||Requires support for unofficial opcodes
|-
|-
!colspan="2"|8 bytes
!colspan="2"|8 bytes
|-
|-
|<pre>EA  ... NOP      &times; 5
|<pre>EA  ... NOP      × 2
4C xx xx JMP *+3</pre>||Not relocatable code
08      PHP      \ × 3
28      PLP      /</pre>||No requirements
|-
|-
|}
|}




=== 14 cycles ===
=== 26 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
|-
|-
!colspan="2"|4 bytes
|<pre>A2 04    LDX #4
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>08      PHP       \ &times; 2
|<pre>A0 05    LDY #5
28      PLP      /</pre>||Writes in stack
88       DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>68      PLA      \ &times; 2
!colspan="2"|7 bytes
48      PHA      /</pre>||Clobbers A, and Z&N
|-
!colspan="2"|5 bytes
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
36 36    ROL $36,X
20 xx xx JSR @rts12× 2</pre>||Requires @rts12
76 36    ROR $36,X</pre>||Clobbers Z&N
|-
|-
!colspan="2"|7 bytes
!colspan="2"|8 bytes
|-
|-
|<pre>EA  ... NOP      &times; 7</pre>||No requirements
|<pre>08      PHP
48      PHA
36 36    ROL $36,X
76 36    ROR $36,X
68      PLA
28      PLP</pre>||No requirements
|-
|-
|}
|}




=== 15 cycles ===
=== 27 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>20 xx xx JSR @rts15</pre>||Requires @rts12, and @rts15; and writes in stack
|<pre>A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>EA      NOP
!colspan="2"|7 bytes
00 00    BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|4 bytes
|-
|<pre>68      PLA
48      PHA
68  ... PLA      &times; 2</pre>||Clobbers A, S, and Z&N
|-
|-
|<pre>48      PHA
|<pre>48      PHA
20 xx xx JSR @rts12</pre>||Clobbers S; requires @rts12; and writes in stack
A9 2A    LDA #$2A ;hides 'ROL A'
|-
38      SEC
!colspan="2"|5 bytes
10 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>08      PHP
|<pre>08      PHP
BA      TSX
A9 2A    LDA #$2A ;hides 'ROL A'
28       PLP
38       SEC
9A      TXS
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
28      PLP</pre>||Clobbers A
|-
|-
|<pre>68      PLA
|<pre>24 2C    BIT <$2C ;hides 'BIT $FDA2'
48      PHA
A2 FD    LDX #253
BA       TSX
E8       INX
68      PLA
D0 FA    BNE *-4</pre>||Clobbers X, Z&N, and V
9A      TXS</pre>||Clobbers A, X, and Z&N; and unsafe for interrupts
|-
|-
|<pre>EA      NOP
|<pre>24 2C    BIT <$2C ;hides 'BIT $FDA0'
08       PHP
A0 FD    LDY #253
F6 F6   INC $F6,X
C8       INY
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
D0 FA   BNE *-4</pre>||Clobbers Y, Z&N, and V
|-
|-
|<pre>EA      NOP
|<pre>A4 AC    LDY <$AC ;hides 'LDY $82A2'
F6 F6   INC $F6,X
A2 82   LDX #130
68       PLA
CA       DEX
48      PHA</pre>||Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
30 FA    BMI *-4</pre>||Clobbers X, Y, and Z&N
|-
|-
|<pre>C5 C5    CMP $C5
!colspan="2"|8 bytes
20 xx xx JSR @rts12</pre>||Clobbers Z&N, and C; requires @rts12; and writes in stack
|-
|-
|<pre>24 24   BIT $24
|<pre>EA  ... NOP      × 3
20 xx xx JSR @rts12</pre>||Clobbers Z&N, and V; requires @rts12; and writes in stack
A2 04   LDX #4
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>A5 A5   LDA $A5
|<pre>EA  ... NOP      × 3
20 xx xx JSR @rts12</pre>||Clobbers A, and Z&N; requires @rts12; and writes in stack
A0 04   LDY #4
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>A4 A4   LDY $A4
|<pre>24 24   BIT $24
20 xx xx JSR @rts12</pre>||Clobbers Y, and Z&N; requires @rts12; and writes in stack
20 xx xx JSR @rts12× 2</pre>||Clobbers Z&N, and V; and requires @rts12
|-
|-
|<pre>85 xx    STA @zptemp
|<pre>20 xx xx JSR @rts12
20 xx xx JSR @rts12</pre>||Requires @zptemp, and @rts12; and writes in stack
08      PHP
BA      TSX
28      PLP
9A      TXS
28      PLP</pre>||Clobbers X; and requires @rts12
|-
|-
|<pre>04 04    NOP $04
!colspan="2"|9 bytes
20 xx xx JSR @rts12</pre>||Requires @rts12, and support for unofficial opcodes; and writes in stack
|-
|-
|<pre>48   ... PHA     &times; 5</pre>||Clobbers S; and writes in stack
|<pre>EA   ... NOP     × 3
|-
08      PHP       \ × 3
|<pre>AA       TAX
28       PLP       /</pre>||No requirements
68  ... PLA      &times; 2
48       PHA
8C       TXA</pre>||Clobbers X, S, and Z&N
|-
|<pre>A8      TAY
68  ... PLA      &times; 2
48      PHA
98      TYA</pre>||Clobbers Y, S, and Z&N
|-
|-
|}
=== 28 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>08      PHP
|<pre>38   ... SEC     × 2
28      PLP
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP     &times; 4</pre>||Writes in stack
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>C5 C5   CMP $C5
|<pre>EA      NOP
36 36    ROL $36,X
A2 04   LDX #4
76 36   ROR $36,X</pre>||Clobbers Z&N, and C
CA      DEX
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>24 24    BIT $24
|<pre>EA      NOP
36 36   ROL $36,X
A0 05   LDY #5
76 36    ROR $36,X</pre>||Clobbers Z&N, and V
88      DEY
|-
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
|<pre>A5 A5    LDA $A5
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers A, and Z&N
|-
|<pre>A6 A6    LDX $A6
36 36    ROL $36,X
76 36   ROR $36,X</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Y, and Z&N
|-
|<pre>E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
|-
!colspan="2"|7 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>4C xx xx JMP *+3
|<pre>48      PHA
36 36   ROL $36,X
18      CLC
76 36   ROR $36,X</pre>||Clobbers Z&N; and not relocatable code
A9 2A   LDA #$2A ;hides 'ROL A'
90 FD   BCC *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>FE 00 02 INC $0200,X
|<pre>08      PHP
EA  ... NOP      &times; 4</pre>||Clobbers Z&N; and requires writable $200-$2FF
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
28      PLP</pre>||Clobbers A
|-
|-
|<pre>FE 00 03 INC $0300,X
|<pre>08      PHP
EA  ... NOP      &times; 4</pre>||Clobbers Z&N; and requires writable $300-$3FF
A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>FE 00 04 INC $0400,X
|<pre>08      PHP
EA  ... NOP      &times; 4</pre>||Clobbers Z&N; and requires writable $400-$4FF
A0 04   LDY #4
|-
88      DEY
|<pre>FE 00 05 INC $0500,X
D0 FD    BNE *-1
EA  ... NOP      &times; 4</pre>||Clobbers Z&N; and requires writable $500-$5FF
28      PLP</pre>||Clobbers Y
|-
|<pre>FE 00 06 INC $0600,X
EA  ... NOP      &times; 4</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
EA  ... NOP      &times; 4</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|-
!colspan="2"|8 bytes
!colspan="2"|8 bytes
|-
|-
|<pre>18  ... CLC      &times; 6
|<pre>08      PHP      \ × 4
90 00    BCC *+2</pre>||Clobbers C
28      PLP      /</pre>||No requirements
|-
|<pre>B8  ... CLV      &times; 6
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 6
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 6
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 6
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}




=== 16 cycles ===
=== 29 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>48       PHA
|<pre>18       CLC
00 00   BRK 0</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
A9 2A   LDA #$2A ;hides 'ROL A'
EA      NOP
90 FC    BCC *-2</pre>||Clobbers A, Z&N, and C
|-
|-
!colspan="2"|4 bytes
|<pre>A2 04    LDX #4
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA      NOP
|<pre>A0 04    LDY #4
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>C5 C5    CMP $C5
!colspan="2"|8 bytes
00 00    BRK 0</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|-
|<pre>24 24   BIT $24
|<pre>48      PHA
00 00   BRK 0</pre>||Clobbers Z&N, and V; requires dummy interrupt handler; and writes in stack
18      CLC
A9 2A   LDA #$2A ;hides 'ROL A'
38      SEC
10 FC   BPL *-2
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>A5 A5   LDA $A5
|<pre>08      PHP
00 00   BRK 0</pre>||Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack
18      CLC
A9 2A   LDA #$2A ;hides 'ROL A'
38      SEC
10 FC   BPL *-2
28      PLP</pre>||Clobbers A
|-
|-
|<pre>A6 A6   LDX $A6
|<pre>08      PHP
00 00   BRK 0</pre>||Clobbers X, and Z&N; requires dummy interrupt handler; and writes in stack
A2 02   LDX #2
EA      NOP
CA      DEX
10 FC   BPL *-2
28      PLP</pre>||Clobbers X
|-
|-
|<pre>A4 A4   LDY $A4
|<pre>08      PHP
00 00   BRK 0</pre>||Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack
A0 03   LDY #3
EA      NOP
88      DEY
D0 FC   BNE *-2
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>85 xx    STA @zptemp
!colspan="2"|9 bytes
00 00    BRK 0</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|-
|<pre>04 04   NOP $04
|<pre>08      PHP
00 00    BRK 0</pre>||Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
28      PLP
08      PHP
C5 C5   CMP $C5
28      PLP
20 xx xx JSR @rts12</pre>||Requires @rts12
|-
|-
|<pre>68  ... PLA      &times; 4</pre>||Clobbers A, S, and Z&N
!colspan="2"|10 bytes
|-
|-
!colspan="2"|5 bytes
|<pre>08      PHP
C5 C5    CMP $C5
28      PLP
08      PHP
36 36    ROL $36,X
76 36    ROR $36,X
28      PLP</pre>||No requirements
|-
|-
|<pre>EA      NOP
|}
08      PHP      \ &times; 2
 
28      PLP      /</pre>||Writes in stack
 
=== 30 cycles ===
{| class="wikitable testtable"
!colspan="2"|7 bytes
|-
|-
|<pre>EA       NOP
|<pre>98       TYA
68       PLA      \ &times; 2
A0 05    LDY #5
48       PHA      /</pre>||Clobbers A, and Z&N
88       DEY
|-
D0 FD    BNE *-1
|<pre>A2 02   LDX #2
A8       TAY</pre>||Clobbers A, and Z&N
CA      DEX
|-
|<pre>EA  ... NOP      × 2
A2 04   LDX #4
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>A0 03   LDY #3
|<pre>EA  ... NOP      × 2
A0 05   LDY #5
88      DEY
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|6 bytes
!colspan="2"|8 bytes
|-
|<pre>48      PHA
18  ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|<pre>08      PHP
18  ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
28      PLP</pre>||Clobbers A
|-
|<pre>EA      NOP
08      PHP
A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA   ... NOP     &times; 2
|<pre>EA       NOP
36 36   ROL $36,X
08      PHP
76 36   ROR $36,X</pre>||Clobbers Z&N
A0 04   LDY #4
88      DEY
D0 FD   BNE *-1
28      PLP</pre>||Clobbers Y
|-
|-
!colspan="2"|8 bytes
!colspan="2"|9 bytes
|-
|-
|<pre>EA  ... NOP      &times; 8</pre>||No requirements
|<pre>08      PHP
48      PHA
18      CLC
A9 6A    LDA #$6A ;hides 'ROR A'
90 FD    BCC *-1
68      PLA
28      PLP</pre>||No requirements
|-
|-
|}
|}




=== 17 cycles ===
=== 31 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>68       PLA
|<pre>18       CLC
00 00   BRK 0</pre>||Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
A9 0A   LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1</pre>||Clobbers A, Z&N, and C
|-
|-
!colspan="2"|4 bytes
|<pre>A2 05    LDX #5
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA       NOP
|<pre>A0 06    LDY #6
20 xx xx JSR @rts15</pre>||Requires @rts12, and @rts15; and writes in stack
88       DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>EA  ... NOP      &times; 2
!colspan="2"|6 bytes
00 00    BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
|-
|-
|<pre>48      PHA
|<pre>48      PHA
20 xx xx JSR @rts14</pre>||Clobbers S; requires @rts12, and @rts14; and writes in stack
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
!colspan="2"|5 bytes
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28      PLP</pre>||Clobbers A
|-
|-
|<pre>E6 xx    INC @zptemp
!colspan="2"|8 bytes
20 xx xx JSR @rts12</pre>||Clobbers Z&N; requires @zptemp, and @rts12; and writes in stack
|-
|-
|<pre>C5 C5    CMP $C5
|<pre>08      PHP
20 xx xx JSR @rts14</pre>||Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack
28      PLP
20 xx xx JSR @rts12× 2</pre>||Requires @rts12
|-
|-
|<pre>24 24    BIT $24
!colspan="2"|9 bytes
20 xx xx JSR @rts14</pre>||Clobbers Z&N, and V; requires @rts12, and @rts14; and writes in stack
|-
|-
|<pre>A5 A5   LDA $A5
|<pre>08      PHP
20 xx xx JSR @rts14</pre>||Clobbers A, and Z&N; requires @rts12, and @rts14; and writes in stack
A6 A6   LDX $A6
A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>A6 A6   LDX $A6
|<pre>08      PHP
20 xx xx JSR @rts14</pre>||Clobbers X, and Z&N; requires @rts12, and @rts14; and writes in stack
A4 A4   LDY $A4
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>A4 A4    LDY $A4
!colspan="2"|10 bytes
20 xx xx JSR @rts14</pre>||Clobbers Y, and Z&N; requires @rts12, and @rts14; and writes in stack
|-
|-
|<pre>85 xx   STA @zptemp
|<pre>08      PHP
20 xx xx JSR @rts14</pre>||Requires @zptemp, @rts12, and @rts14; and writes in stack
36 36    ROL $36,X \ × 2
76 36   ROR $36,X /
28      PLP</pre>||No requirements
|-
|-
|<pre>04 04    NOP $04
|}
20 xx xx JSR @rts14</pre>||Requires @rts12, @rts14, and support for unofficial opcodes; and writes in stack
 
 
=== 32 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
|-
|-
|<pre>48      PHA
|<pre>A2 05    LDX #5 ;hides 'ORA zp'
08       PHP      \ &times; 2
CA       DEX ;first loop only
28       PLP      /</pre>||Clobbers S; and writes in stack
CA       DEX
D0 FB    BNE *-3</pre>||Clobbers A, X, and Z&N
|-
|-
|<pre>EA      NOP
|<pre>A0 05    LDY #5 ;hides 'ORA zp'
68       PLA
88       DEY ;first loop only
48       PHA
88       DEY
68  ... PLA      &times; 2</pre>||Clobbers A, S, and Z&N
D0 FB    BNE *-3</pre>||Clobbers A, Y, and Z&N
|-
|-
!colspan="2"|6 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>08      PHP
|<pre>A9 2A   LDA #$2A ;hides 'ROL A'
26 26   ROL $26
EA  ... NOP      × 3
66 26   ROR $26
10 FA   BPL *-4</pre>||Clobbers A, Z&N, and C
28      PLP</pre>||Writes in stack
|-
|-
|<pre>68      PLA
!colspan="2"|8 bytes
48      PHA
26 26    ROL $26
66 26    ROR $26</pre>||Clobbers A, and Z&N
|-
|-
|<pre>E6 xx   INC @zptemp
|<pre>EA      NOP
36 36   ROL $36,X
98      TYA
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires @zptemp
A0 05   LDY #5
88      DEY
D0 FD   BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>AA      TAX
|<pre>A6 A6    LDX $A6
A2 04    LDX #4
EA      NOP
EA      NOP
68  ... PLA      &times; 2
CA       DEX
48       PHA
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
8C      TXA</pre>||Clobbers X, S, and Z&N
|-
|-
|<pre>A8      TAY
|<pre>A4 A4    LDY $A4
A0 04    LDY #4
EA      NOP
EA      NOP
68  ... PLA      &times; 2
88       DEY
48       PHA
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
98      TYA</pre>||Clobbers Y, S, and Z&N
|-
|-
!colspan="2"|7 bytes
!colspan="2"|9 bytes
|-
|-
|<pre>EA       NOP
|<pre>48       PHA
C5 C5   CMP $C5
98      TYA
36 36   ROL $36,X
A0 04   LDY #4
76 36    ROR $36,X</pre>||Clobbers Z&N, and C
88      DEY
D0 FD   BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
24 24   BIT $24
98      TYA
36 36   ROL $36,X
A0 04   LDY #4
76 36    ROR $36,X</pre>||Clobbers Z&N, and V
88      DEY
D0 FD   BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A
|-
|-
|<pre>EA      NOP
|<pre>EA   ... NOP      × 2
A6 A6   LDX $A6
08       PHP
36 36   ROL $36,X
A2 04   LDX #4
76 36    ROR $36,X</pre>||Clobbers X, and Z&N
CA      DEX
D0 FD   BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA      NOP
|<pre>EA   ... NOP      × 2
A4 A4   LDY $A4
08       PHP
36 36   ROL $36,X
A0 04   LDY #4
76 36    ROR $36,X</pre>||Clobbers Y, and Z&N
88      DEY
D0 FD   BNE *-1
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>FE 00 02 INC $0200,X
!colspan="2"|10 bytes
26 26    ROL $26
66 26    ROR $26</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|-
|<pre>FE 00 03 INC $0300,X
|<pre>08      PHP
26 26   ROL $26
48      PHA
66 26   ROR $26</pre>||Clobbers Z&N; and requires writable $300-$3FF
18  ... CLC      × 2
A9 6A   LDA #$6A ;hides 'ROR A'
90 FD   BCC *-1
68      PLA
28      PLP</pre>||No requirements
|-
|-
|<pre>FE 00 04 INC $0400,X
|}
26 26    ROL $26
 
66 26    ROR $26</pre>||Clobbers Z&N; and requires writable $400-$4FF
 
=== 33 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
|-
|-
|<pre>FE 00 05 INC $0500,X
|<pre>18  ... CLC      × 2
26 26   ROL $26
A9 0A   LDA #$0A ;hides 'ASL A'
66 26   ROR $26</pre>||Clobbers Z&N; and requires writable $500-$5FF
90 FD   BCC *-1</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>FE 00 06 INC $0600,X
|<pre>EA      NOP
26 26   ROL $26
A2 05   LDX #5
66 26   ROR $26</pre>||Clobbers Z&N; and requires writable $600-$6FF
CA      DEX
|-
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
04 04   NOP $04
A0 06   LDY #6
36 36    ROL $36,X
88      DEY
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires support for unofficial opcodes
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|8 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>EA       NOP
|<pre>48       PHA
4C xx xx JMP *+3
18      CLC
36 36   ROL $36,X
A9 0A   LDA #$0A ;hides 'ASL A'
76 36   ROR $36,X</pre>||Clobbers Z&N; and not relocatable code
10 FD   BPL *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
!colspan="2"|9 bytes
|<pre>08      PHP
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28      PLP</pre>||Clobbers A
|-
|-
|<pre>18  ... CLC      &times; 7
|<pre>08      PHP
90 00   BCC *+2</pre>||Clobbers C
A2 04   LDX #4
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>B8  ... CLV      &times; 7
|<pre>08      PHP
50 00   BVC *+2</pre>||Clobbers V
A0 05   LDY #5
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>EA  ... NOP      &times; 7
!colspan="2"|9 bytes
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|-
|<pre>EA   ... NOP     &times; 7
|<pre>EA       NOP
04 04    NOP $04</pre>||Requires support for unofficial opcodes
08      PHP
28      PLP
20 xx xx JSR @rts12× 2</pre>||Requires @rts12
|-
|-
!colspan="2"|10 bytes
!colspan="2"|10 bytes
|-
|-
|<pre>EA  ... NOP      &times; 7
|<pre>08      PHP      \ × 2
4C xx xx JMP *+3</pre>||Not relocatable code
28      PLP      /
08      PHP
36 36    ROL $36,X
76 36    ROR $36,X
28      PLP</pre>||No requirements
|-
|-
|}
|}




=== 18 cycles ===
=== 34 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>E6 xx   INC @zptemp
|<pre>A9 0A   LDA #$0A ;hides 'ASL A'
00 00   BRK 0</pre>||Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack
18      CLC
10 FC   BPL *-2</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>48       PHA
|<pre>A0 88    LDY #136 ;hides 'DEY'
20 xx xx JSR @rts15</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
88       DEY
30 FC    BMI *-2</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>68      PLA
!colspan="2"|7 bytes
20 xx xx JSR @rts14</pre>||Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack
|-
|-
|<pre>EA      NOP
|<pre>A6 A6    LDX $A6
48       PHA
A2 05    LDX #5
00 00   BRK 0</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
CA       DEX
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
!colspan="2"|5 bytes
!colspan="2"|8 bytes
|-
|<pre>F6 F6    INC $F6,X
20 xx xx JSR @rts12</pre>||Clobbers Z&N; requires @zptemp, @rts12, and writable $00-$FF; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|-
|<pre>C5 C5    CMP $C5
|<pre>C5 C5    CMP $C5
20 xx xx JSR @rts15</pre>||Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>24 24   BIT $24
|<pre>08      PHP
20 xx xx JSR @rts15</pre>||Clobbers Z&N, and V; requires @rts12, and @rts15; and writes in stack
A5 A5   LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28      PLP</pre>||Clobbers A
|-
|-
|<pre>A5 A5    LDA $A5
!colspan="2"|9 bytes
20 xx xx JSR @rts15</pre>||Clobbers A, and Z&N; requires @rts12, and @rts15; and writes in stack
|-
|-
|<pre>A6 A6   LDX $A6
|<pre>08      PHP
20 xx xx JSR @rts15</pre>||Clobbers X, and Z&N; requires @rts12, and @rts15; and writes in stack
48      PHA
A9 2A   LDA #$2A ;hides 'ROL A'
38      SEC
10 FC    BPL *-2
68      PLA
28      PLP</pre>||No requirements
|-
|-
|<pre>A4 A4    LDY $A4
|}
20 xx xx JSR @rts15</pre>||Clobbers Y, and Z&N; requires @rts12, and @rts15; and writes in stack
 
 
=== 35 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
|-
|-
|<pre>85 xx   STA @zptemp
|<pre>A9 2A   LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts15</pre>||Requires @zptemp, @rts12, and @rts15; and writes in stack
08      PHP
28      PLP
10 FB    BPL *-3</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>A9      LDA #0
|<pre>A2 F8    LDX #248 ;hides 'SED'
20 xx xx JSR delay_256a_16_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack
E8  ... INX      × 2
D0 FB    BNE *-3</pre>||Clobbers X, Z&N, and D
|-
|-
|<pre>04 04   NOP $04
|<pre>A0 88   LDY #136 ;hides 'DEY'
20 xx xx JSR @rts15</pre>||Requires @rts12, @rts15, and support for unofficial opcodes; and writes in stack
88  ... DEY      × 2
30 FB    BMI *-3</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>18      CLC
!colspan="2"|7 bytes
90 00    BCC *+2
00 00    BRK 0</pre>||Clobbers C; requires dummy interrupt handler; and writes in stack
|-
|-
|<pre>B8       CLV
|<pre>98       TYA
50 00   BVC *+2
A0 06   LDY #6
00 00    BRK 0</pre>||Clobbers V; requires dummy interrupt handler; and writes in stack
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>EA       NOP
|<pre>EA   ... NOP     × 2
A5 A5   LDA $A5
A2 05   LDX #5
00 00   BRK 0</pre>||Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack
CA      DEX
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA      NOP
!colspan="2"|8 bytes
A6 A6    LDX $A6
00 00    BRK 0</pre>||Clobbers X, and Z&N; requires dummy interrupt handler; and writes in stack
|-
|-
|<pre>EA       NOP
|<pre>48       PHA
A4 A4   LDY $A4
38  ... SEC      × 2
00 00   BRK 0</pre>||Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack
A9 0A   LDA #$0A ;hides 'ASL A'
10 FD   BPL *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
85 xx   STA @zptemp
38  ... SEC      × 2
00 00   BRK 0</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
A9 0A   LDA #$0A ;hides 'ASL A'
10 FD   BPL *-1
28      PLP</pre>||Clobbers A
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
04 04    NOP $04
08      PHP
00 00   BRK 0</pre>||Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
A2 04    LDX #4
CA      DEX
10 FD   BPL *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
68  ... PLA      &times; 4</pre>||Clobbers A, S, and Z&N
08      PHP
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>48  ... PHA      &times; 2
!colspan="2"|9 bytes
20 xx xx JSR @rts12</pre>||Clobbers S; requires @rts12; and writes in stack
|-
|-
!colspan="2"|6 bytes
|<pre>08      PHP
|-
48      PHA
|<pre>EA  ... NOP      &times; 2
18       CLC
08      PHP       \ &times; 2
A9 2A   LDA #$2A ;hides 'ROL A'
28      PLP      /</pre>||Writes in stack
90 FD    BCC *-1
|-
68       PLA
|<pre>EA  ... NOP      &times; 2
28       PLP</pre>||No requirements
68      PLA      \ &times; 2
48      PHA       /</pre>||Clobbers A, and Z&N
|-
|<pre>EA       NOP
A2 02   LDX #2
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA       NOP
A0 03    LDY #3
88       DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>F6 F6... INC $F6,X&times; 3</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
!colspan="2"|7 bytes
|-
|<pre>EA  ... NOP      &times; 3
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 9</pre>||No requirements
|-
|-
|}
|}




=== 19 cycles ===
=== 36 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>F6 F6   INC $F6,X
|<pre>A9 E9   LDA #$E9 ;hides 'SBC #$2A'
00 00   BRK 0</pre>||Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack
2A      ROL A ;first loop only
B0 FC   BCS *-2</pre>||Clobbers A, Z&N, C, and V
|-
|-
|<pre>68       PLA
|<pre>A2 07    LDX #7
20 xx xx JSR @rts15</pre>||Clobbers A, S, and Z&N; requires @rts12, and @rts15; and writes in stack
CA       DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>48  ... PHA      &times; 2
|<pre>A0 06    LDY #6
00 00   BRK 0</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
88      DEY
10 FD   BPL *-1</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|5 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>08       PHP
|<pre>38       SEC
28       PLP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12</pre>||Requires @rts12; and writes in stack
38       SEC
10 FC    BPL *-2</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>EA  ... NOP      &times; 3
!colspan="2"|8 bytes
00 00    BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
|-
|-
|<pre>68       PLA
|<pre>48      PHA
48       PHA
18       CLC
68   ... PLA     &times; 3</pre>||Clobbers A, S, and Z&N
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
90 FC    BCC *-2
68       PLA</pre>||Clobbers Z&N, and C
|-
|-
!colspan="2"|6 bytes
|<pre>08      PHP
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA      NOP
90 FC    BCC *-2
28      PLP</pre>||Clobbers A
|-
|-
|<pre>08      PHP
|<pre>08      PHP
36 36   ROL $36,X
A2 04   LDX #4
76 36   ROR $36,X
EA      NOP
28      PLP</pre>||Writes in stack
CA      DEX
D0 FC   BNE *-2
28      PLP</pre>||Clobbers X
|-
|-
|<pre>68       PLA
|<pre>08       PHP
48       PHA
A0 04    LDY #4
36 36   ROL $36,X
EA      NOP
76 36    ROR $36,X</pre>||Clobbers A, and Z&N
88       DEY
D0 FC   BNE *-2
28      PLP</pre>||Clobbers Y
|-
!colspan="2"|9 bytes
|-
|<pre>20 xx xx JSR @rts12× 3</pre>||Requires @rts12
|-
!colspan="2"|10 bytes
|-
|-
|<pre>AA       TAX
|<pre>08       PHP
68      PLA
48      PHA
48      PHA
68  ... PLA      &times; 2
18      CLC
8C       TXA</pre>||Clobbers X, S, and Z&N
A9 2A    LDA #$2A ;hides 'ROL A'
|-
38       SEC
|<pre>A8      TAY
10 FC    BPL *-2
68      PLA
68      PLA
48       PHA
28       PLP</pre>||No requirements
68  ... PLA      &times; 2
98      TYA</pre>||Clobbers Y, S, and Z&N
|-
|-
|}
=== 37 cycles ===
{| class="wikitable testtable"
!colspan="2"|7 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>A6 A6   LDX $A6
|<pre>A5 A5   LDA $A5
A2 02   LDX #2
A9 0A    LDA #$0A ;hides 'ASL A'
18      CLC
10 FC    BPL *-2</pre>||Clobbers A, Z&N, and C
|-
|<pre>A2 04   LDX #4
EA  ... NOP      × 2
CA      DEX
CA      DEX
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
D0 FB   BNE *-3</pre>||Clobbers X, and Z&N
|-
|-
|<pre>A4 A4    LDY $A4
|<pre>A0 04   LDY #4
A0 03   LDY #3
EA  ... NOP      × 2
88      DEY
88      DEY
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
D0 FB   BNE *-3</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|8 bytes
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
E6 xx   INC @zptemp
98      TYA
36 36   ROL $36,X
A0 06   LDY #6
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires @zptemp
88      DEY
D0 FD   BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>FE 00 02 INC $0200,X
!colspan="2"|9 bytes
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|-
|<pre>FE 00 03 INC $0300,X
|<pre>48      PHA
36 36   ROL $36,X
98      TYA
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
A0 05   LDY #5
88      DEY
D0 FD   BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N
|-
|-
|<pre>FE 00 04 INC $0400,X
|<pre>08      PHP
36 36   ROL $36,X
98      TYA
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
A0 05   LDY #5
|-
88      DEY
|<pre>FE 00 05 INC $0500,X
D0 FD   BNE *-1
36 36    ROL $36,X
A8      TAY
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
28      PLP</pre>||Clobbers A
|-
|-
|<pre>FE 00 06 INC $0600,X
|<pre>EA  ... NOP      × 2
36 36   ROL $36,X
08      PHP
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
A2 04   LDX #4
CA      DEX
10 FD   BPL *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>FE 00 07 INC $0700,X
|<pre>EA  ... NOP      × 2
36 36    ROL $36,X
08      PHP
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $700-$7FF
A0 05   LDY #5
|-
88      DEY
!colspan="2"|8 bytes
D0 FD   BNE *-1
|-
28      PLP</pre>||Clobbers Y
|<pre>C5 C5    CMP $C5
EA  ... NOP      &times; 2
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N, and C
|-
|<pre>24 24   BIT $24
EA  ... NOP      &times; 2
36 36   ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
EA  ... NOP      &times; 2
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|9 bytes
|-
|<pre>4C xx xx JMP *+3
EA  ... NOP      &times; 2
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and not relocatable code
|-
|-
!colspan="2"|10 bytes
!colspan="2"|10 bytes
|-
|-
|<pre>18  ... CLC      &times; 8
|<pre>08      PHP
90 00   BCC *+2</pre>||Clobbers C
48      PHA
|-
18  ... CLC      × 2
|<pre>B8  ... CLV      &times; 8
A9 2A    LDA #$2A ;hides 'ROL A'
50 00    BVC *+2</pre>||Clobbers V
90 FD   BCC *-1
|-
68      PLA
|<pre>EA  ... NOP      &times; 8
28      PLP</pre>||No requirements
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 8
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 8
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}




=== 20 cycles ===
=== 38 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>08       PHP
|<pre>38       SEC
28       PLP
A9 69    LDA #$69 ;hides 'ADC #$EA'
00 00   BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
EA       NOP ;first loop only
B0 FC   BCS *-2</pre>||Clobbers A, Z&N, C, and V
|-
|-
!colspan="2"|5 bytes
|<pre>EA      NOP
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>A9 2A   LDA #$2A ;hides 'ROL A'
|<pre>EA      NOP
18       CLC
A0 06   LDY #6
10 FC   BPL *-2</pre>||Clobbers A, Z&N, and C
88       DEY
10 FD   BPL *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>E6 xx    INC @zptemp
!colspan="2"|7 bytes
20 xx xx JSR @rts15</pre>||Clobbers Z&N; requires @zptemp, @rts12, and @rts15; and writes in stack
|-
|-
|<pre>F6 F6   INC $F6,X
|<pre>48      PHA
20 xx xx JSR @rts14</pre>||Clobbers Z&N; requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack
18      CLC
A9 0A   LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>68  ... PLA      &times; 5</pre>||Clobbers A, S, and Z&N
|<pre>08      PHP
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
28      PLP</pre>||Clobbers A
|-
|-
|<pre>48  ... PHA      &times; 2
|<pre>08      PHP
20 xx xx JSR @rts14</pre>||Clobbers S; requires @rts12, and @rts14; and writes in stack
A2 05    LDX #5
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
48       PHA
A0 06    LDY #6
20 xx xx JSR @rts15</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
88       DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y
|-
|-
!colspan="2"|6 bytes
!colspan="2"|8 bytes
|-
|<pre>BA      TSX
68  ... PLA      &times; 4
9A      TXS</pre>||Clobbers A, X, and Z&N; and unsafe for interrupts
|-
|-
|<pre>08      PHP
|<pre>08      PHP
48      PHA
48      PHA
F6 F6   INC $F6,X
A9 0A   LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA
68      PLA
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
28      PLP</pre>||No requirements
|-
|-
|<pre>F6 F6    INC $F6,X
|}
68      PLA      \ &times; 2
 
48      PHA      /</pre>||Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
 
=== 39 cycles ===
{| class="wikitable testtable"
!colspan="2"|4 bytes
|-
|-
|<pre>EA  ... NOP      &times; 3
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>18      CLC
!colspan="2"|7 bytes
90 00    BCC *+2
20 xx xx JSR @rts15</pre>||Clobbers C; requires @rts12, and @rts15; and writes in stack
|-
|-
|<pre>B8       CLV
|<pre>A6 A6    LDX $A6
50 00   BVC *+2
A2 07    LDX #7
20 xx xx JSR @rts15</pre>||Clobbers V; requires @rts12, and @rts15; and writes in stack
CA       DEX
D0 FD   BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA       NOP
|<pre>A4 A4    LDY $A4
A5 A5   LDA $A5
A0 06    LDY #6
20 xx xx JSR @rts15</pre>||Clobbers A, and Z&N; requires @rts12, and @rts15; and writes in stack
88       DEY
10 FD   BPL *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>EA      NOP
!colspan="2"|8 bytes
A6 A6    LDX $A6
20 xx xx JSR @rts15</pre>||Clobbers X, and Z&N; requires @rts12, and @rts15; and writes in stack
|-
|-
|<pre>EA       NOP
|<pre>98       TYA
A4 A4   LDY $A4
A0 88   LDY #136 ;hides 'DEY'
20 xx xx JSR @rts15</pre>||Clobbers Y, and Z&N; requires @rts12, and @rts15; and writes in stack
88  ... DEY      × 2
30 FB    BMI *-3
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
85 xx   STA @zptemp
A2 05   LDX #5 ;hides 'ORA zp'
20 xx xx JSR @rts15</pre>||Requires @zptemp, @rts12, and @rts15; and writes in stack
CA      DEX ;first loop only
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and X
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
04 04   NOP $04
A0 05   LDY #5 ;hides 'ORA zp'
20 xx xx JSR @rts15</pre>||Requires @rts12, @rts15, and support for unofficial opcodes; and writes in stack
88      DEY ;first loop only
88      DEY
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and Y
|-
|-
|<pre>48  ... PHA      &times; 2
!colspan="2"|9 bytes
08      PHP      \ &times; 2
28      PLP      /</pre>||Clobbers S; and writes in stack
|-
|-
|<pre>AA       TAX
|<pre>48       PHA
68   ... PLA     &times; 4
A9 2A    LDA #$2A ;hides 'ROL A'
8C       TXA</pre>||Clobbers X, S, and Z&N
EA   ... NOP     × 3
10 FA    BPL *-4
68       PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>A8       TAY
|<pre>08       PHP
68   ... PLA     &times; 4
A9 2A    LDA #$2A ;hides 'ROL A'
98       TYA</pre>||Clobbers Y, S, and Z&N
EA   ... NOP     × 3
10 FA    BPL *-4
28       PLP</pre>||Clobbers A
|-
|-
!colspan="2"|7 bytes
!colspan="2"|10 bytes
|-
|-
|<pre>EA   ... NOP     &times; 3
|<pre>EA       NOP
08      PHP      \ &times; 2
48       PHA
28       PLP      /</pre>||Writes in stack
98      TYA
|-
A0 05   LDY #5
|<pre>98      TYA
A0 03   LDY #3
88      DEY
88      DEY
D0 FD    BNE *-1
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
A8      TAY
68      PLA</pre>||Clobbers Z&N
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>08      PHP
A2 02   LDX #2
A6 A6    LDX $A6
A2 04   LDX #4
EA      NOP
CA      DEX
CA      DEX
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
D0 FC   BNE *-2
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>08      PHP
A0 03   LDY #3
A4 A4    LDY $A4
A0 04   LDY #4
EA      NOP
88      DEY
88      DEY
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
D0 FC   BNE *-2
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>EA      NOP
!colspan="2"|11 bytes
F6 F6... INC $F6,X&times; 3</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|-
!colspan="2"|8 bytes
|<pre>08      PHP
|-
48      PHA
|<pre>26 26   ROL $26  \ &times; 2
98      TYA
66 26   ROR $26  /</pre>||Clobbers Z&N
A0 04   LDY #4
|-
88      DEY
!colspan="2"|10 bytes
D0 FD   BNE *-1
|-
A8      TAY
|<pre>EA  ... NOP      &times; 10</pre>||No requirements
68      PLA
28      PLP</pre>||No requirements
|-
|-
|}
|}




=== 21 cycles ===
=== 40 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>68  ... PLA      &times; 2
|<pre>A2 05    LDX #5 ;hides 'ORA zp'
00 00   BRK 0</pre>||Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
EA      NOP
CA      DEX
D0 FB   BNE *-3</pre>||Clobbers A, X, and Z&N
|-
|-
!colspan="2"|5 bytes
|<pre>A0 05    LDY #5 ;hides 'ORA zp'
EA      NOP
88      DEY
D0 FB    BNE *-3</pre>||Clobbers A, Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|-
|<pre>18       CLC
|<pre>98       TYA
A9 2A   LDA #$2A ;hides 'ROL A'
A0 06   LDY #6
90 FD    BCC *-1</pre>||Clobbers A, Z&N, and C
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>A2 04   LDX #4
|<pre>EA  ... NOP      × 2
A2 07   LDX #7
CA      DEX
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>A0 04   LDY #4
|<pre>EA  ... NOP      × 2
A0 06   LDY #6
88      DEY
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
18  ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>08      PHP
|<pre>08      PHP
28      PLP
18  ... CLC      × 2
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
A9 0A    LDA #$0A ;hides 'ASL A'
|-
90 FD    BCC *-1
|<pre>F6 F6    INC $F6,X
28      PLP</pre>||Clobbers A
20 xx xx JSR @rts15</pre>||Clobbers Z&N; requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
F6 F6   INC $F6,X
08      PHP
00 00   BRK 0</pre>||Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack
A2 05   LDX #5
|-
CA      DEX
|<pre>48  ... PHA      &times; 2
10 FD   BPL *-1
20 xx xx JSR @rts15</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
48  ... PHA      &times; 2
08      PHP
00 00   BRK 0</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
A0 06   LDY #6
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y
|-
|-
!colspan="2"|6 bytes
!colspan="2"|9 bytes
|-
|-
|<pre>08      PHP      \ &times; 3
|<pre>08      PHP
28      PLP       /</pre>||Writes in stack
48       PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA
28      PLP</pre>||No requirements
|-
|-
|<pre>68      PLA      \ &times; 3
|}
48      PHA      /</pre>||Clobbers A, and Z&N
 
 
=== 41 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|-
!colspan="2"|8 bytes
|<pre>38      SEC
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>A2 08   LDX #8
E6 xx   INC @zptemp
CA      DEX
36 36    ROL $36,X
D0 FD   BNE *-1</pre>||Clobbers X, and Z&N
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires @zptemp
|-
|-
|<pre>EA       NOP
|<pre>A0 08    LDY #8
FE 00 02 INC $0200,X
88       DEY
36 36   ROL $36,X
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|-
|<pre>EA      NOP
!colspan="2"|7 bytes
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|-
|<pre>EA       NOP
|<pre>48       PHA
FE 00 04 INC $0400,X
A9 0A    LDA #$0A ;hides 'ASL A'
36 36   ROL $36,X
18      CLC
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
10 FC   BPL *-2
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
FE 00 05 INC $0500,X
A9 0A    LDA #$0A ;hides 'ASL A'
36 36   ROL $36,X
18      CLC
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
10 FC   BPL *-2
28      PLP</pre>||Clobbers A
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
FE 00 06 INC $0600,X
A0 88   LDY #136 ;hides 'DEY'
36 36    ROL $36,X
88       DEY
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
30 FC   BMI *-2
|-
28      PLP</pre>||Clobbers Y
|<pre>EA       NOP
FE 00 07 INC $0700,X
36 36   ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|-
!colspan="2"|9 bytes
!colspan="2"|9 bytes
|-
|-
|<pre>C5 C5    CMP $C5
|<pre>08      PHP
EA  ... NOP      &times; 3
A6 A6   LDX $A6
36 36   ROL $36,X
A2 05   LDX #5
76 36   ROR $36,X</pre>||Clobbers Z&N, and C
CA      DEX
|-
10 FD   BPL *-1
|<pre>24 24   BIT $24
28      PLP</pre>||Clobbers X
EA  ... NOP      &times; 3
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
EA  ... NOP      &times; 3
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
|-
!colspan="2"|10 bytes
!colspan="2"|10 bytes
|-
|-
|<pre>4C xx xx JMP *+3
|<pre>08      PHP
EA  ... NOP      &times; 3
48      PHA
36 36   ROL $36,X
A5 A5   LDA $A5
76 36   ROR $36,X</pre>||Clobbers Z&N; and not relocatable code
A9 0A   LDA #$0A ;hides 'ASL A'
|-
10 FD   BPL *-1
!colspan="2"|11 bytes
68      PLA
|-
28      PLP</pre>||No requirements
|<pre>18  ... CLC      &times; 9
90 00   BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 9
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 9
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 9
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      &times; 9
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}




=== 22 cycles ===
=== 42 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|5 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>08      PHP
|<pre>A5 A5    LDA $A5
28      PLP
A9 4A    LDA #$4A ;hides 'LSR A'
20 xx xx JSR @rts15</pre>||Requires @rts12, and @rts15; and writes in stack
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
!colspan="2"|7 bytes
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
08      PHP
A2 05   LDX #5 ;hides 'ORA zp'
28      PLP
00 00   BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>68  ... PLA      &times; 2
20 xx xx JSR @rts14</pre>||Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
38      SEC
10 FC    BPL *-2</pre>||Clobbers A, Z&N, and C
|-
|<pre>A2 02    LDX #2
EA      NOP
EA      NOP
CA      DEX
CA      DEX
10 FC   BPL *-2</pre>||Clobbers X, and Z&N
D0 FB   BNE *-3</pre>||Clobbers A, X, and Z&N
|-
|-
|<pre>A0 03   LDY #3
|<pre>EA      NOP
A0 05   LDY #5 ;hides 'ORA zp'
EA      NOP
EA      NOP
88      DEY
88      DEY
D0 FC   BNE *-2</pre>||Clobbers Y, and Z&N
D0 FB   BNE *-3</pre>||Clobbers A, Y, and Z&N
|-
|-
|<pre>EA      NOP
!colspan="2"|8 bytes
F6 F6    INC $F6,X
20 xx xx JSR @rts14</pre>||Clobbers Z&N; requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack
|-
|<pre>EA      NOP
68  ... PLA      &times; 5</pre>||Clobbers A, S, and Z&N
|-
|-
|<pre>48      PHA
|<pre>48      PHA
A9 2A    LDA #$2A ;hides 'ROL A'
08      PHP
08      PHP
28      PLP
28      PLP
20 xx xx JSR @rts12</pre>||Clobbers S; requires @rts12; and writes in stack
10 FB    BPL *-3
|-
68      PLA</pre>||Clobbers Z&N, and C
!colspan="2"|7 bytes
|-
|-
|<pre>08      PHP
|<pre>08      PHP
BA      TSX
A9 2A    LDA #$2A ;hides 'ROL A'
08      PHP
08      PHP
28   ... PLP     &times; 2
28       PLP
9A      TXS
10 FB    BPL *-3
28      PLP</pre>||Clobbers X; and writes in stack
28      PLP</pre>||Clobbers A
|-
|-
|<pre>EA      NOP
|<pre>08      PHP
08      PHP
A2 F8    LDX #248 ;hides 'SED'
48      PHA
E8  ... INX      × 2
F6 F6   INC $F6,X
D0 FB   BNE *-3
68      PLA
28      PLP</pre>||Clobbers X
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
F6 F6   INC $F6,X
A0 88   LDY #136 ;hides 'DEY'
68      PLA      \ &times; 2
88  ... DEY      × 2
48       PHA      /</pre>||Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
30 FB    BMI *-3
28       PLP</pre>||Clobbers Y
|-
|-
|<pre>08      PHP
!colspan="2"|9 bytes
C5 C5    CMP $C5
28      PLP
20 xx xx JSR @rts12</pre>||Requires @rts12; and writes in stack
|-
|-
|<pre>48      PHA
|<pre>48      PHA
08       PHP
98       TYA
36 36   ROL $36,X
A0 06   LDY #6
76 36   ROR $36,X
88      DEY
28       PLP</pre>||Clobbers S; and writes in stack
D0 FD   BNE *-1
A8      TAY
68       PLA</pre>||Clobbers Z&N
|-
|-
!colspan="2"|8 bytes
!colspan="2"|10 bytes
|-
|-
|<pre>08      PHP
|<pre>08      PHP
24 24    BIT $24
48       PHA
36 36    ROL $36,X
38  ... SEC      × 2
76 36    ROR $36,X
A9 0A   LDA #$0A ;hides 'ASL A'
28       PLP</pre>||Writes in stack
10 FD   BPL *-1
|-
68      PLA
|<pre>26 26   ROL $26
28      PLP</pre>||No requirements
66 26    ROR $26
36 36    ROL $36,X
76 36   ROR $36,X</pre>||Clobbers Z&N
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 11</pre>||No requirements
|-
|-
|}
|}




=== 23 cycles ===
=== 43 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 2A    LDA #$2A ;hides 'ROL A'
48      PHA
10 FC    BPL *-2</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
|<pre>68  ... PLA      &times; 2
20 xx xx JSR @rts15</pre>||Clobbers A, S, and Z&N; requires @rts12, and @rts15; and writes in stack
|-
|<pre>48      PHA
08      PHP
28      PLP
00 00    BRK 0</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|6 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>18   ... CLC     &times; 2
|<pre>38   ... SEC     × 2
A9 2A   LDA #$2A ;hides 'ROL A'
A9 4A   LDA #$4A ;hides 'LSR A'
90 FD    BCC *-1</pre>||Clobbers A, Z&N, and C
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>EA      NOP
|<pre>A2 05   LDX #5
A2 04   LDX #4
EA      NOP
CA      DEX
CA      DEX
D0 FD   BNE *-1</pre>||Clobbers X, and Z&N
10 FC   BPL *-2</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA      NOP
|<pre>A0 06   LDY #6
A0 04   LDY #4
EA      NOP
88      DEY
88      DEY
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
D0 FC   BNE *-2</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>EA      NOP
!colspan="2"|7 bytes
08      PHP
28      PLP
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|-
|<pre>EA       NOP
|<pre>48       PHA
F6 F6   INC $F6,X
A9 E9   LDA #$E9 ;hides 'SBC #$2A'
20 xx xx JSR @rts15</pre>||Clobbers Z&N; requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack
2A      ROL A ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers Z&N, C, and V
|-
|-
|<pre>08      PHP
|<pre>08      PHP
C5 C5   CMP $C5
A9 E9   LDA #$E9 ;hides 'SBC #$2A'
28      PLP
2A      ROL A ;first loop only
00 00    BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
B0 FC    BCS *-2
28      PLP</pre>||Clobbers A
|-
|-
|<pre>68       PLA
|<pre>08       PHP
48       PHA
A2 07    LDX #7
68  ... PLA      &times; 4</pre>||Clobbers A, S, and Z&N
CA       DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
48  ... PHA      &times; 2
A0 06    LDY #6
20 xx xx JSR @rts15</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
88      DEY
|-
10 FD    BPL *-1
!colspan="2"|7 bytes
28      PLP</pre>||Clobbers Y
|-
|<pre>EA      NOP
08      PHP      \ &times; 3
28      PLP       /</pre>||Writes in stack
|-
|<pre>EA      NOP
68      PLA      \ &times; 3
48      PHA      /</pre>||Clobbers A, and Z&N
|-
|-
!colspan="2"|8 bytes
!colspan="2"|8 bytes
|-
|-
|<pre>E6 xx   INC @zptemp
|<pre>48      PHA
F6 F6... INC $F6,X&times; 3</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
38      SEC
A9 0A   LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
!colspan="2"|9 bytes
!colspan="2"|10 bytes
|-
|-
|<pre>E6 xx   INC @zptemp
|<pre>08      PHP
EA   ... NOP     &times; 3
48      PHA
36 36   ROL $36,X
18      CLC
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires @zptemp
A9 2A   LDA #$2A ;hides 'ROL A'
EA       NOP
90 FC   BCC *-2
68      PLA
28      PLP</pre>||No requirements
|-
|-
|<pre>EA  ... NOP      &times; 2
|}
FE 00 02 INC $0200,X
 
36 36    ROL $36,X
 
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
=== 44 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
FE 00 03 INC $0300,X
EA  ... NOP      × 2
36 36   ROL $36,X
10 FB   BPL *-3</pre>||Clobbers A, Z&N, and C
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|-
|<pre>EA   ... NOP     &times; 2
|<pre>A0 88    LDY #136 ;hides 'DEY'
FE 00 04 INC $0400,X
EA       NOP
36 36   ROL $36,X
88      DEY
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
30 FB   BMI *-3</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>EA  ... NOP      &times; 2
!colspan="2"|7 bytes
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>A6 A6    LDX $A6
FE 00 06 INC $0600,X
A2 08   LDX #8
36 36   ROL $36,X
CA      DEX
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
D0 FD   BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA  ... NOP      &times; 2
!colspan="2"|9 bytes
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|10 bytes
|-
|-
|<pre>C5 C5    CMP $C5
|<pre>C5 C5    CMP $C5
26 26   ROL $26  \ &times; 2
48      PHA
66 26    ROR $26  /</pre>||Clobbers Z&N, and C
A9 0A   LDA #$0A ;hides 'ASL A'
18      CLC
10 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>24 24   BIT $24
|<pre>08      PHP
26 26   ROL $26  \ &times; 2
A5 A5   LDA $A5
66 26    ROR $26  /</pre>||Clobbers Z&N, and V
A9 0A   LDA #$0A ;hides 'ASL A'
18      CLC
10 FC    BPL *-2
28      PLP</pre>||Clobbers A
|-
|-
|<pre>04 04    NOP $04
|<pre>08      PHP
26 26    ROL $26   \ &times; 2
A2 04    LDX #4
66 26   ROR $26  /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
EA   ... NOP      × 2
|-
CA      DEX
!colspan="2"|11 bytes
D0 FB   BNE *-3
28      PLP</pre>||Clobbers X
|-
|-
|<pre>4C xx xx JMP *+3
|<pre>08      PHP
26 26   ROL $26   \ &times; 2
A0 04   LDY #4
66 26   ROR $26  /</pre>||Clobbers Z&N; and not relocatable code
EA   ... NOP      × 2
88      DEY
D0 FB   BNE *-3
28      PLP</pre>||Clobbers Y
|-
|-
!colspan="2"|12 bytes
!colspan="2"|10 bytes
|-
|-
|<pre>18  ... CLC      &times; 10
|<pre>EA      NOP
90 00   BCC *+2</pre>||Clobbers C
48      PHA
98      TYA
A0 06    LDY #6
88      DEY
D0 FD   BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N
|-
|-
|<pre>B8  ... CLV      &times; 10
!colspan="2"|11 bytes
50 00    BVC *+2</pre>||Clobbers V
|-
|-
|<pre>EA  ... NOP      &times; 10
|<pre>08      PHP
85 xx   STA @zptemp</pre>||Requires @zptemp
48      PHA
|-
98      TYA
|<pre>EA  ... NOP      &times; 10
A0 05   LDY #5
04 04   NOP $04</pre>||Requires support for unofficial opcodes
88      DEY
|-
D0 FD   BNE *-1
!colspan="2"|13 bytes
A8      TAY
|-
68      PLA
|<pre>EA  ... NOP      &times; 10
28      PLP</pre>||No requirements
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}




=== 24 cycles ===
=== 45 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>A9 0A   LDA #$0A ;hides 'ASL A'
|<pre>98      TYA
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
A0 08   LDY #8
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
!colspan="2"|5 bytes
|<pre>EA  ... NOP      × 2
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>48      PHA
|<pre>EA   ... NOP     × 2
68   ... PLA     &times; 2
A0 08   LDY #8
00 00   BRK 0</pre>||Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|6 bytes
!colspan="2"|8 bytes
|-
|<pre>20 xx xx JSR @rts12&times; 2</pre>||Requires @rts12; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
28      PLP
00 00    BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>68  ... PLA      &times; 6</pre>||Clobbers A, S, and Z&N
|-
|-
|<pre>48      PHA
|<pre>48      PHA
A2 04   LDX #4
38      SEC
CA       DEX
A9 69   LDA #$69 ;hides 'ADC #$EA'
D0 FD   BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
EA       NOP ;first loop only
B0 FC   BCS *-2
68      PLA</pre>||Clobbers Z&N, C, and V
|-
|-
|<pre>48       PHA
|<pre>08       PHP
A0 04   LDY #4
38      SEC
88       DEY
A9 69   LDA #$69 ;hides 'ADC #$EA'
D0 FD   BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
EA       NOP ;first loop only
B0 FC   BCS *-2
28      PLP</pre>||Clobbers A
|-
|-
!colspan="2"|7 bytes
|<pre>EA      NOP
|-
08      PHP
|<pre>A6 A6    LDX $A6
A2 07   LDX #7
A2 04   LDX #4
CA      DEX
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>A4 A4    LDY $A4
|<pre>EA      NOP
A0 04   LDY #4
08      PHP
A0 06   LDY #6
88      DEY
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>48      PHA
!colspan="2"|9 bytes
08      PHP      \ &times; 3
28      PLP      /</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|8 bytes
|-
|-
|<pre>08      PHP
|<pre>08      PHP
48      PHA
48      PHA
26 26   ROL $26
18      CLC
66 26   ROR $26
A9 0A   LDA #$0A ;hides 'ASL A'
90 FD   BCC *-1
68      PLA
68      PLA
28      PLP</pre>||Writes in stack
28      PLP</pre>||No requirements
|-
|<pre>36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      &times; 12</pre>||No requirements
|-
|-
|}
|}




=== 25 cycles ===
=== 46 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|5 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>20 xx xx JSR @rts12
|<pre>A2 08    LDX #8
00 00   BRK 0</pre>||Requires dummy interrupt handler, and @rts12; and writes in stack
CA      DEX
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>68  ... PLA      &times; 3
|<pre>A0 09    LDY #9
00 00   BRK 0</pre>||Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
88      DEY
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|6 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>36 36   ROL $36,X
|<pre>48      PHA
76 36   ROR $36,X
A9 4A   LDA #$4A ;hides 'LSR A'
00 00    BRK 0</pre>||Clobbers Z&N; requires dummy interrupt handler; and writes in stack
D0 FD   BNE *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>08      PHP
|<pre>08      PHP
E6 xx   INC @zptemp
A9 4A   LDA #$4A ;hides 'LSR A'
28      PLP
D0 FD    BNE *-1
00 00    BRK 0</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
28      PLP</pre>||Clobbers A
|-
|-
|<pre>68      PLA
!colspan="2"|9 bytes
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1</pre>||Clobbers A, S, Z&N, and C
|-
|-
|<pre>A2 02   LDX #2
|<pre>08      PHP
48      PHA
A6 A6    LDX $A6
A2 07   LDX #7
CA      DEX
CA      DEX
10 FC   BPL *-2</pre>||Clobbers X, S, and Z&N; and writes in stack
D0 FD   BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>68       PLA
|<pre>08       PHP
A2 04   LDX #4
A4 A4   LDY $A4
CA      DEX
A0 06   LDY #6
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>A0 03   LDY #3
48      PHA
88      DEY
88      DEY
D0 FC   BNE *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
10 FD   BPL *-1
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>68      PLA
!colspan="2"|10 bytes
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
|-
|<pre>48      PHA
|<pre>48      PHA
08       PHP
98       TYA
28       PLP
A0 88    LDY #136 ;hides 'DEY'
20 xx xx JSR @rts15</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
88  ... DEY      × 2
30 FB    BMI *-3
A8       TAY
68      PLA</pre>||Clobbers Z&N
|-
|-
|<pre>48      PHA
!colspan="2"|11 bytes
68  ... PLA      &times; 2
20 xx xx JSR @rts14</pre>||Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack
|-
|-
|<pre>48  ... PHA     &times; 4
|<pre>08      PHP
00 00    BRK 0</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP     × 3
10 FA    BPL *-4
68      PLA
28      PLP</pre>||No requirements
|-
|-
!colspan="2"|7 bytes
|}
 
 
=== 47 cycles ===
{| class="wikitable testtable"
!colspan="2"|8 bytes
|-
|-
|<pre>98      TYA
|<pre>98      TYA
A0 04   LDY #4
A0 06   LDY #6
EA      NOP
88      DEY
88      DEY
D0 FD   BNE *-1
D0 FC   BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>EA  ... NOP      × 3
A2 04   LDX #4
A2 08   LDX #8
CA      DEX
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA  ... NOP      &times; 2
|<pre>08      PHP
A0 04   LDY #4
A2 05    LDX #5 ;hides 'ORA zp'
EA      NOP
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and X
|-
|<pre>EA  ... NOP      × 3
A0 08   LDY #8
88      DEY
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>20 xx xx JSR @rts12
|<pre>08      PHP
08      PHP
A0 05    LDY #5 ;hides 'ORA zp'
F6 F6   INC $F6,X
EA      NOP
28      PLP</pre>||Requires @zptemp, @rts12, and writable $00-$FF; and writes in stack
88      DEY
D0 FB   BNE *-3
28      PLP</pre>||Clobbers A, and Y
|-
|-
|<pre>EA  ... NOP      &times; 2
!colspan="2"|9 bytes
08      PHP
28      PLP
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>08      PHP
C5 C5    CMP $C5
28      PLP
20 xx xx JSR @rts15</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|-
|<pre>48      PHA
|<pre>48      PHA
A9       LDA #0
98       TYA
20 xx xx JSR delay_256a_16_clocks
A0 06    LDY #6
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N
|-
|-
|<pre>08      PHP
|<pre>08      PHP
A9       LDA #0
98       TYA
20 xx xx JSR delay_256a_16_clocks
A0 06    LDY #6
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A
|-
|-
|<pre>EA       NOP
|<pre>EA   ... NOP     × 2
08      PHP
08      PHP
C5 C5   CMP $C5
A2 07   LDX #7
28      PLP
CA      DEX
00 00    BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>48   ... PHA     &times; 2
|<pre>EA   ... NOP     × 2
08      PHP
08      PHP
28      PLP
A0 06    LDY #6
20 xx xx JSR @rts12</pre>||Clobbers S; requires @rts12; and writes in stack
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y
|-
|-
!colspan="2"|8 bytes
!colspan="2"|10 bytes
|-
|-
|<pre>EA   ... NOP     &times; 2
|<pre>08      PHP
08      PHP       \ &times; 3
48      PHA
28      PLP       /</pre>||Writes in stack
18   ... CLC     × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68       PLA
28      PLP</pre>||No requirements
|-
|-
!colspan="2"|9 bytes
|}
 
 
=== 48 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
E6 xx   INC @zptemp
A2 08   LDX #8
F6 F6... INC $F6,X&times; 3</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>85 xx   STA @zptemp
|<pre>EA      NOP
68      PLA
A0 09   LDY #9
48       PHA
88       DEY
68  ... PLA      &times; 3
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
A5 xx   LDA @zptemp</pre>||Clobbers S, and Z&N; and requires @zptemp
|-
|-
!colspan="2"|10 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>C5 C5    CMP $C5
|<pre>48      PHA
26 26    ROL $26
38      SEC
66 26   ROR $26
A9 4A   LDA #$4A ;hides 'LSR A'
36 36   ROL $36,X
D0 FD   BNE *-1
76 36    ROR $36,X</pre>||Clobbers Z&N, and C
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>24 24    BIT $24
|<pre>08      PHP
26 26    ROL $26
38      SEC
66 26   ROR $26
A9 4A   LDA #$4A ;hides 'LSR A'
36 36   ROL $36,X
D0 FD   BNE *-1
76 36    ROR $36,X</pre>||Clobbers Z&N, and V
28      PLP</pre>||Clobbers A
|-
|-
|<pre>E6 xx   INC @zptemp
|<pre>08      PHP
26 26   ROL $26  \ &times; 2
A2 08   LDX #8
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires @zptemp
CA      DEX
D0 FD   BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA  ... NOP      &times; 3
|<pre>08      PHP
FE 00 02 INC $0200,X
A0 08    LDY #8
36 36   ROL $36,X
88      DEY
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
D0 FD   BNE *-1
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>EA  ... NOP      &times; 3
!colspan="2"|9 bytes
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|-
|<pre>EA  ... NOP      &times; 3
|<pre>08      PHP
FE 00 04 INC $0400,X
48      PHA
36 36    ROL $36,X
A9 0A   LDA #$0A ;hides 'ASL A'
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
18       CLC
|-
10 FC   BPL *-2
|<pre>EA  ... NOP      &times; 3
68      PLA
FE 00 05 INC $0500,X
28      PLP</pre>||No requirements
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA  ... NOP      &times; 3
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      &times; 3
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|11 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26   ROR $26
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|13 bytes
|-
|<pre>18   ... CLC     &times; 11
90 00   BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 11
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 11
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 11
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|14 bytes
|-
|<pre>EA  ... NOP      &times; 11
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}




=== 26 cycles ===
=== 49 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|4 bytes
|-
|-
|<pre>00 00... BRK 0   &times; 2</pre>||Requires dummy interrupt handler; and writes in stack
|<pre>A0 88   LDY #136 ;hides 'DEY'
30 FD    BMI *-1</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|5 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>18      CLC
|<pre>18      CLC
A9 0A   LDA #$0A ;hides 'ASL A'
A9 2A   LDA #$2A ;hides 'ROL A'
10 FD   BPL *-1</pre>||Clobbers A, Z&N, and C
08      PHP
28      PLP
90 FB   BCC *-3</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>A2 04   LDX #4
|<pre>A6 A6    LDX $A6
A2 08   LDX #8
CA      DEX
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>A0 05    LDY #5
!colspan="2"|8 bytes
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|6 bytes
|<pre>C5 C5    CMP $C5
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>20 xx xx JSR @rts12
|<pre>08      PHP
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A
|-
|-
|<pre>48      PHA
!colspan="2"|10 bytes
68  ... PLA      &times; 2
20 xx xx JSR @rts15</pre>||Clobbers A, S, and Z&N; requires @rts12, and @rts15; and writes in stack
|-
|-
!colspan="2"|7 bytes
|<pre>08       PHP
|-
48       PHA
|<pre>EA       NOP
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts12&times; 2</pre>||Requires @rts12; and writes in stack
08      PHP
|-
28       PLP
|<pre>EA       NOP
10 FB   BPL *-3
68  ... PLA      &times; 6</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
48       PHA
36 36   ROL $36,X
76 36    ROR $36,X
68      PLA
68      PLA
28      PLP</pre>||Writes in stack
28      PLP</pre>||No requirements
|-
|<pre>98      TYA
A0 03    LDY #3
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|13 bytes
|-
|<pre>EA  ... NOP      &times; 13</pre>||No requirements
|-
|-
|}
|}




=== 27 cycles ===
=== 50 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|5 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>A9       LDA #0
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$2A'
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
2A      ROL A ;first loop only
EA      NOP
B0 FB    BCS *-3</pre>||Clobbers A, Z&N, C, and V
|-
|-
|<pre>00 00   BRK 0
|<pre>A2 07   LDX #7
20 xx xx JSR @rts14</pre>||Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|-
|<pre>48       PHA
|<pre>A0 06    LDY #6
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
10 FD   BPL *-1</pre>||Clobbers A, S, Z&N, and C; and writes in stack
88      DEY
10 FC   BPL *-2</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|6 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>A5 A5    LDA $A5
|<pre>98      TYA
A9 0A   LDA #$0A ;hides 'ASL A'
A0 09   LDY #9
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>20 xx xx JSR @rts12
!colspan="2"|8 bytes
20 xx xx JSR @rts15</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|-
|<pre>00 00   BRK 0
|<pre>48      PHA
08      PHP      \ &times; 2
38  ... SEC      × 2
28       PLP      /</pre>||Requires dummy interrupt handler; and writes in stack
A9 4A   LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA</pre>||Clobbers Z&N, and C
|-
|-
!colspan="2"|7 bytes
|<pre>08       PHP
|-
38  ... SEC      × 2
|<pre>48       PHA
A9 4A   LDA #$4A ;hides 'LSR A'
A9 2A   LDA #$2A ;hides 'ROL A'
D0 FD   BNE *-1
18      CLC
28       PLP</pre>||Clobbers A
10 FC   BPL *-2
68       PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|-
|<pre>08      PHP
|<pre>08      PHP
A9 2A   LDA #$2A ;hides 'ROL A'
A2 05   LDX #5
18       CLC
EA       NOP
CA      DEX
10 FC    BPL *-2
10 FC    BPL *-2
28      PLP</pre>||Clobbers A; and writes in stack
28      PLP</pre>||Clobbers X
|-
|<pre>A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|-
|<pre>08      PHP
|<pre>08      PHP
F6 F6    INC $F6,X
A0 06   LDY #6
28      PLP
EA       NOP
20 xx xx JSR @rts14</pre>||Requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack
|-
|<pre>A2 82    LDX #130 ;hides 'NOP #imm'
04 EA    NOP $EA ;hides 'NOP'
CA      DEX
30 FA    BMI *-4</pre>||Clobbers X, and Z&N; and requires support for unofficial opcodes
|-
|<pre>A0 82   LDY #130 ;hides 'NOP #imm'
04 EA   NOP $EA ;hides 'NOP'
88      DEY
88      DEY
30 FA   BMI *-4</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
D0 FC   BNE *-2
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>68      PLA
!colspan="2"|9 bytes
48      PHA
68  ... PLA      &times; 5</pre>||Clobbers A, S, and Z&N
|-
|<pre>48  ... PHA      &times; 2
A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
20 xx xx JSR @rts12&times; 2</pre>||Clobbers S; requires @rts12; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>08      PHP
|<pre>08      PHP
F6 F6   INC $F6,X
48      PHA
28      PLP       \ &times; 2
A9 E9   LDA #$E9 ;hides 'SBC #$2A'
08      PHP       /
2A       ROL A ;first loop only
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
B0 FC    BCS *-2
68       PLA
28      PLP</pre>||No requirements
|-
|-
|<pre>24 24    BIT $24
|}
20 xx xx JSR @rts12&times; 2</pre>||Clobbers Z&N, and V; requires @rts12; and writes in stack
 
|-
 
|<pre>20 xx xx JSR @rts12
== Sanity checks ==
08      PHP
BA      TSX
28      PLP
9A      TXS
28      PLP</pre>||Clobbers X; requires @rts12; and writes in stack
|-
|<pre>85 xx    STA @zptemp
20 xx xx JSR @rts12&times; 2</pre>||Requires @zptemp, and @rts12; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
28      PLP
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>04 04    NOP $04
20 xx xx JSR @rts12&times; 2</pre>||Requires @rts12, and support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP      \ &times; 3
28      PLP      /</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 6A    LDA #$6A ;hides 'ROR A'
38      SEC
10 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|10 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|11 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|14 bytes
|-
|<pre>18  ... CLC      &times; 12
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 12
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 12
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 12
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|15 bytes
|-
|<pre>EA  ... NOP      &times; 12
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 28 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #1
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
00 00... BRK 0    &times; 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1</pre>||Clobbers A, S, Z&N, and C
|-
!colspan="2"|6 bytes
|-
|<pre>18  ... CLC      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
|-
|<pre>EA      NOP
A2 04    LDX #4
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>20 xx xx JSR @rts14&times; 2</pre>||Requires @rts12, and @rts14; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
28      PLP
20 xx xx JSR @rts15</pre>||Requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack
|-
|<pre>68  ... PLA      &times; 7</pre>||Clobbers A, S, and Z&N
|-
|<pre>48  ... PHA      &times; 2
08      PHP
28      PLP
20 xx xx JSR @rts15</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP      \ &times; 4
28      PLP      /</pre>||Writes in stack
|-
|<pre>68      PLA      \ &times; 4
48      PHA      /</pre>||Clobbers A, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>EA  ... NOP      &times; 2
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|14 bytes
|-
|<pre>EA  ... NOP      &times; 14</pre>||No requirements
|-
|}
 
 
=== 29 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #2
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
00 00... BRK 0    &times; 2</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA      NOP
90 FC    BCC *-2</pre>||Clobbers A, Z&N, and C
|-
|<pre>A2 04    LDX #4
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 04    LDY #4
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
|<pre>20 xx xx JSR @rts14
20 xx xx JSR @rts15</pre>||Requires @rts12, @rts14, and @rts15; and writes in stack
|-
|<pre>C5 C5    CMP $C5
00 00... BRK 0    &times; 2</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>24 24    BIT $24
00 00... BRK 0    &times; 2</pre>||Clobbers Z&N, and V; requires dummy interrupt handler; and writes in stack
|-
|<pre>A5 A5    LDA $A5
00 00... BRK 0    &times; 2</pre>||Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack
|-
|<pre>85 xx    STA @zptemp
00 00... BRK 0    &times; 2</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
00 00    BRK 0
20 xx xx JSR @rts14</pre>||Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack
|-
|<pre>04 04    NOP $04
00 00... BRK 0    &times; 2</pre>||Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>EA      NOP
20 xx xx JSR @rts12
20 xx xx JSR @rts15</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>EA      NOP
00 00    BRK 0
08      PHP      \ &times; 2
28      PLP      /</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
20 xx xx JSR @rts12
20 xx xx JSR @rts14</pre>||Clobbers S; requires @rts12, and @rts14; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
38      SEC
10 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
38      SEC
10 FC    BPL *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 02    LDX #2
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 03    LDY #3
EA      NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>E6 xx    INC @zptemp
20 xx xx JSR @rts12&times; 2</pre>||Clobbers Z&N; requires @zptemp, and @rts12; and writes in stack
|-
|<pre>24 24    BIT $24
20 xx xx JSR @rts12
20 xx xx JSR @rts14</pre>||Clobbers Z&N, and V; requires @rts12, and @rts14; and writes in stack
|-
|<pre>85 xx    STA @zptemp
20 xx xx JSR @rts12
20 xx xx JSR @rts14</pre>||Requires @zptemp, @rts12, and @rts14; and writes in stack
|-
|<pre>04 04    NOP $04
20 xx xx JSR @rts12
20 xx xx JSR @rts14</pre>||Requires @rts12, @rts14, and support for unofficial opcodes; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
|<pre>EA      NOP
48      PHA
20 xx xx JSR @rts12&times; 2</pre>||Clobbers S; requires @rts12; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA      NOP
08      PHP
F6 F6    INC $F6,X
28      PLP      \ &times; 2
08      PHP      /
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>20 xx xx JSR @rts12
08      PHP
26 26    ROL $26
66 26    ROR $26
28      PLP</pre>||Requires @rts12; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
36 36    ROL $36,X
76 36    ROR $36,X
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
28      PLP</pre>||Writes in stack
|-
|<pre>E6 xx    INC @zptemp
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|15 bytes
|-
|<pre>18  ... CLC      &times; 13
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 13
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 13
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 13
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|16 bytes
|-
|<pre>EA  ... NOP      &times; 13
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 30 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #3
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68      PLA
00 00... BRK 0    &times; 2</pre>||Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF
|-
|<pre>20 xx xx JSR @rts15&times; 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
00 00... BRK 0    &times; 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1</pre>||Clobbers A, S, Z&N, and C
|-
|<pre>68      PLA
A2 04    LDX #4
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 04    LDX #4
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>EA      NOP
20 xx xx JSR @rts14&times; 2</pre>||Requires @rts12, and @rts14; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
18  ... CLC      &times; 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
18  ... CLC      &times; 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>85 xx    STA @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
A5 xx    LDA @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
20 xx xx JSR @rts12&times; 2</pre>||Clobbers Z&N; requires @zptemp, @rts12, and writable $00-$FF; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
20 xx xx JSR @rts12&times; 2</pre>||Clobbers S; requires @rts12; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 6A    LDA #$6A ;hides 'ROR A'
90 FD    BCC *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>F6 F6... INC $F6,X&times; 5</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>85 xx    STA @zptemp
68  ... PLA      &times; 6
A5 xx    LDA @zptemp</pre>||Clobbers S, and Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 3
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|15 bytes
|-
|<pre>EA  ... NOP      &times; 15</pre>||No requirements
|-
|}
 
 
=== 31 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1</pre>||Clobbers A, Z&N, and C
|-
|<pre>A2 06    LDX #6
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 05    LDY #5
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>E6 xx    INC @zptemp
00 00... BRK 0    &times; 2</pre>||Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
48      PHA
00 00... BRK 0    &times; 2</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>EA      NOP
20 xx xx JSR @rts14
20 xx xx JSR @rts15</pre>||Requires @rts12, @rts14, and @rts15; and writes in stack
|-
|<pre>18      CLC
90 00    BCC *+2
00 00... BRK 0    &times; 2</pre>||Clobbers C; requires dummy interrupt handler; and writes in stack
|-
|<pre>B8      CLV
50 00    BVC *+2
00 00... BRK 0    &times; 2</pre>||Clobbers V; requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
85 xx    STA @zptemp
00 00... BRK 0    &times; 2</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
00 00    BRK 0
20 xx xx JSR @rts14</pre>||Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack
|-
|<pre>EA      NOP
04 04    NOP $04
00 00... BRK 0    &times; 2</pre>||Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
20 xx xx JSR @rts14&times; 2</pre>||Clobbers S; requires @rts12, and @rts14; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
28      PLP
20 xx xx JSR @rts12&times; 2</pre>||Requires @rts12; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
00 00    BRK 0
08      PHP      \ &times; 2
28      PLP      /</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
48      PHA
68  ... PLA      &times; 6</pre>||Clobbers A, S, and Z&N
|-
|<pre>48      PHA
08      PHP
A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>8C      TXA
A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>98      TYA
A0 82    LDY #130 ;hides 'NOP #imm'
04 EA    NOP $EA ;hides 'NOP'
88      DEY
30 FA    BMI *-4
A8      TAY</pre>||Clobbers A, and Z&N; and requires support for unofficial opcodes
|-
|<pre>48      PHA
08      PHP      \ &times; 4
28      PLP      /</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
28      PLP</pre>||Writes in stack
|-
|<pre>68      PLA
48      PHA
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers A, and Z&N
|-
|<pre>85 xx    STA @zptemp
68      PLA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, and C; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>EA      NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      &times; 2
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA  ... NOP      &times; 2
24 24    BIT $24
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      &times; 2
04 04    NOP $04
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|13 bytes
|-
|<pre>EA  ... NOP      &times; 2
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|16 bytes
|-
|<pre>18  ... CLC      &times; 14
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 14
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 14
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 14
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|17 bytes
|-
|<pre>EA  ... NOP      &times; 14
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 32 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #5
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 05    LDX #5 ;hides 'ORA zp'
CA      DEX ;first loop only
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers A, X, and Z&N
|-
|<pre>A0 05    LDY #5 ;hides 'ORA zp'
88      DEY ;first loop only
88      DEY
D0 FB    BNE *-3</pre>||Clobbers A, Y, and Z&N
|-
|<pre>F6 F6    INC $F6,X
00 00... BRK 0    &times; 2</pre>||Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack
|-
|<pre>68  ... PLA      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1</pre>||Clobbers A, S, Z&N, and C
|-
|<pre>48  ... PHA      &times; 2
00 00... BRK 0    &times; 2</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A9 2A    LDA #$2A ;hides 'ROL A'
EA  ... NOP      &times; 3
10 FA    BPL *-4</pre>||Clobbers A, Z&N, and C
|-
|<pre>A2 05    LDX #5
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>EA      NOP
20 xx xx JSR @rts15&times; 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>AA      TAX
A9      LDA #1
20 xx xx JSR delay_a_25_clocks
8C      TXA</pre>||Clobbers X, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A8      TAY
A9      LDA #1
20 xx xx JSR delay_a_25_clocks
98      TYA</pre>||Clobbers Y, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A2 FA    LDX #250 ;hides 'NOP'
EA      NOP
E8  ... INX      &times; 2
D0 FA    BNE *-4</pre>||Clobbers X, and Z&N; and requires support for unofficial opcodes
|-
|<pre>A0 7A    LDY #122 ;hides 'NOP'
EA      NOP
C8  ... INY      &times; 2
10 FA    BPL *-4</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
|-
|<pre>EA  ... NOP      &times; 3
00 00... BRK 0    &times; 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A2 04    LDX #4
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>AA      TAX
68      PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
8C      TXA</pre>||Clobbers X, S, Z&N, and C
|-
|<pre>48  ... PHA      &times; 2
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>A8      TAY
68      PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
98      TYA</pre>||Clobbers Y, S, Z&N, and C
|-
|<pre>68      PLA
20 xx xx JSR @rts14&times; 2</pre>||Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>A6 A6    LDX $A6
A2 04    LDX #4
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 04    LDY #4
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
20 xx xx JSR @rts14&times; 2</pre>||Requires @rts12, and @rts14; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 02    LDX #2
24 24    BIT $24
CA      DEX
10 FB    BPL *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 03    LDY #3
24 24    BIT $24
88      DEY
D0 FB    BNE *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
28      PLP
20 xx xx JSR @rts12
08      PHP
F6 F6    INC $F6,X
28      PLP</pre>||Requires @zptemp, @rts12, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #0
20 xx xx JSR delay_256a_16_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack
|-
|<pre>EA      NOP
48  ... PHA      &times; 2
20 xx xx JSR @rts12&times; 2</pre>||Clobbers S; requires @rts12; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
18  ... CLC      &times; 2
A9 6A    LDA #$6A ;hides 'ROR A'
90 FD    BCC *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N
|-
!colspan="2"|16 bytes
|-
|<pre>EA  ... NOP      &times; 16</pre>||No requirements
|-
|}
 
 
=== 33 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #6
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>18  ... CLC      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1</pre>||Clobbers A, Z&N, and C
|-
|<pre>EA      NOP
A2 06    LDX #6
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 05    LDY #5
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>08      PHP
28      PLP
00 00... BRK 0    &times; 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 04    LDX #4
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
20 xx xx JSR @rts15&times; 2</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 04    LDY #4
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
28      PLP
20 xx xx JSR @rts12
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>24 24    BIT $24
20 xx xx JSR @rts15&times; 2</pre>||Clobbers Z&N, and V; requires @rts12, and @rts15; and writes in stack
|-
|<pre>85 xx    STA @zptemp
20 xx xx JSR @rts15&times; 2</pre>||Requires @zptemp, @rts12, and @rts15; and writes in stack
|-
|<pre>04 04    NOP $04
20 xx xx JSR @rts15&times; 2</pre>||Requires @rts12, @rts15, and support for unofficial opcodes; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>EA      NOP
08      PHP
28      PLP
20 xx xx JSR @rts12&times; 2</pre>||Requires @rts12; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP      \ &times; 2
28      PLP      /
08      PHP
36 36    ROL $36,X
76 36    ROR $36,X
28      PLP</pre>||Writes in stack
|-
|<pre>C5 C5    CMP $C5
85 xx    STA @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
A5 xx    LDA @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>84 xx    STY @zptemp
A0 82    LDY #130 ;hides 'NOP #imm'
04 EA    NOP $EA ;hides 'NOP'
88      DEY
30 FA    BMI *-4
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
|-
|<pre>85 xx    STA @zptemp
68      PLA
48      PHA
68  ... PLA      &times; 5
A5 xx    LDA @zptemp</pre>||Clobbers S, and Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      &times; 2
E6 xx    INC @zptemp
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|13 bytes
|-
|<pre>C5 C5    CMP $C5
EA  ... NOP      &times; 3
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
EA  ... NOP      &times; 3
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
EA  ... NOP      &times; 3
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|14 bytes
|-
|<pre>4C xx xx JMP *+3
EA  ... NOP      &times; 3
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|17 bytes
|-
|<pre>18  ... CLC      &times; 15
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 15
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 15
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 15
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|18 bytes
|-
|<pre>EA  ... NOP      &times; 15
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 34 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2</pre>||Clobbers A, Z&N, and C
|-
|<pre>A0 88    LDY #136 ;hides 'DEY'
88      DEY
30 FC    BMI *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A2 06    LDX #6
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>68  ... PLA      &times; 2
00 00... BRK 0    &times; 2</pre>||Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 06    LDX #6
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>48      PHA
A9      LDA #0
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #0
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
F6 F6    INC $F6,X
00 00... BRK 0    &times; 2</pre>||Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
28      PLP
00 00    BRK 0
20 xx xx JSR @rts14</pre>||Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA</pre>||Clobbers S, Z&N, and C; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
|<pre>EA      NOP
48  ... PHA      &times; 2
00 00... BRK 0    &times; 2</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>C5 C5    CMP $C5
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
20 xx xx JSR @rts15&times; 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
20 xx xx JSR @rts14&times; 2</pre>||Clobbers Z&N; requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack
|-
|<pre>EA  ... NOP      &times; 4
00 00... BRK 0    &times; 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
|<pre>48  ... PHA      &times; 2
20 xx xx JSR @rts14&times; 2</pre>||Clobbers S; requires @rts12, and @rts14; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 2A    LDA #$2A ;hides 'ROL A'
18      CLC
10 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>85 xx    STA @zptemp
68      PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, and C; and requires @zptemp
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|17 bytes
|-
|<pre>EA  ... NOP      &times; 17</pre>||No requirements
|-
|}
 
 
=== 35 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #8
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A9 2A    LDA #$2A ;hides 'ROL A'
08      PHP
28      PLP
10 FB    BPL *-3</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>A2 F8    LDX #248 ;hides 'SED'
E8  ... INX      &times; 2
D0 FB    BNE *-3</pre>||Clobbers X, Z&N, and D
|-
|<pre>A0 88    LDY #136 ;hides 'DEY'
88  ... DEY      &times; 2
30 FB    BMI *-3</pre>||Clobbers Y, and Z&N
|-
|<pre>68      PLA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1</pre>||Clobbers A, S, Z&N, and C
|-
|<pre>68      PLA
A2 06    LDX #6
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 05    LDY #5
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 06    LDX #6
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>48      PHA
A9      LDA #1
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #1
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
08      PHP
28      PLP
00 00... BRK 0    &times; 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
18  ... CLC      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
18  ... CLC      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A2 04    LDX #4
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
28      PLP
20 xx xx JSR @rts14&times; 2</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>E6 xx    INC @zptemp
20 xx xx JSR @rts15&times; 2</pre>||Clobbers Z&N; requires @zptemp, @rts12, and @rts15; and writes in stack
|-
|<pre>EA      NOP
48      PHA
20 xx xx JSR @rts15&times; 2</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>84 xx    STY @zptemp
A0 04    LDY #4
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|13 bytes
|-
|<pre>EA  ... NOP      &times; 2
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|14 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|15 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|18 bytes
|-
|<pre>18  ... CLC      &times; 16
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 16
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 16
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 16
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|19 bytes
|-
|<pre>EA  ... NOP      &times; 16
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 36 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 07    LDY #7
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|6 bytes
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
18      CLC
10 FC    BPL *-2</pre>||Clobbers A, Z&N, and C
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #2
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #2
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
08      PHP
28      PLP
00 00... BRK 0    &times; 2</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA      NOP
90 FC    BCC *-2
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA      NOP
90 FC    BCC *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 04    LDX #4
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 04    LDY #4
EA      NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
20 xx xx JSR @rts15&times; 2</pre>||Clobbers Z&N; requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
28      PLP
20 xx xx JSR @rts14
20 xx xx JSR @rts15</pre>||Requires @rts12, @rts14, and @rts15; and writes in stack
|-
|<pre>08      PHP
C5 C5    CMP $C5
28      PLP
00 00... BRK 0    &times; 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
20 xx xx JSR @rts15&times; 2</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>8C      TXA
A2 05    LDX #5
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>20 xx xx JSR @rts12&times; 3</pre>||Requires @rts12; and writes in stack
|-
|<pre>98      TYA
A0 7A    LDY #122 ;hides 'NOP'
EA      NOP
C8  ... INY      &times; 2
10 FA    BPL *-4
A8      TAY</pre>||Clobbers A, and Z&N; and requires support for unofficial opcodes
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
38      SEC
10 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 04    LDY #4
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>F6 F6    INC $F6,X
85 xx    STA @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
A5 xx    LDA @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp, and writable $00-$FF
|-
|<pre>85 xx    STA @zptemp
EA      NOP
68      PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, and C; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|18 bytes
|-
|<pre>EA  ... NOP      &times; 18</pre>||No requirements
|-
|}
 
 
=== 37 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #10
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
|<pre>A2 04    LDX #4
68      PLA
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48      PHA
A0 88    LDY #136 ;hides 'DEY'
88      DEY
30 FC    BMI *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>A0 04    LDY #4
68      PLA
88      DEY
D0 FC    BNE *-2</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2</pre>||Clobbers A, Z&N, and C
|-
|<pre>A2 04    LDX #4
EA  ... NOP      &times; 2
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, and Z&N
|-
|<pre>A0 04    LDY #4
EA  ... NOP      &times; 2
88      DEY
D0 FB    BNE *-3</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #3
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #3
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 09    LDA #$09 ;hides 'ORA #$EA'
EA      NOP ;first loop only
00 00    BRK 0
10 FA    BPL *-4</pre>||Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 05    LDY #5
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>F6 F6    INC $F6,X
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28      PLP</pre>||Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
28      PLP
20 xx xx JSR @rts15&times; 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
28      PLP
00 00... BRK 0    &times; 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA</pre>||Clobbers S, Z&N, and C; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 04    LDX #4
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 05    LDY #5
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>EA      NOP
08      PHP
28      PLP
20 xx xx JSR @rts14&times; 2</pre>||Requires @rts12, and @rts14; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
18  ... CLC      &times; 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|14 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      &times; 3
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA  ... NOP      &times; 3
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA  ... NOP      &times; 3
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA  ... NOP      &times; 3
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA  ... NOP      &times; 3
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      &times; 3
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|15 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|19 bytes
|-
|<pre>18  ... CLC      &times; 17
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 17
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 17
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 17
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|20 bytes
|-
|<pre>EA  ... NOP      &times; 17
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 38 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #11
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>38      SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA      NOP ;first loop only
10 FC    BPL *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>EA      NOP
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>68      PLA
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2</pre>||Clobbers A, S, Z&N, and C
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>98      TYA
A0 88    LDY #136 ;hides 'DEY'
88      DEY
30 FC    BMI *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 06    LDX #6
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 05    LDY #5
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>20 xx xx JSR @rts12
00 00... BRK 0    &times; 2</pre>||Requires dummy interrupt handler, and @rts12; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>85 xx    STA @zptemp
68  ... PLA      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, and C; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>85 xx    STA @zptemp
A9 2A    LDA #$2A ;hides 'ROL A'
EA  ... NOP      &times; 3
10 FA    BPL *-4
A5 xx    LDA @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>84 xx    STY @zptemp
A0 7A    LDY #122 ;hides 'NOP'
EA      NOP
C8  ... INY      &times; 2
10 FA    BPL *-4
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
|-
!colspan="2"|12 bytes
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 04    LDX #4
EA      NOP
CA      DEX
D0 FC    BNE *-2
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|13 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|19 bytes
|-
|<pre>EA  ... NOP      &times; 19</pre>||No requirements
|-
|}
 
 
=== 39 cycles ===
{| class="wikitable testtable"
!colspan="2"|4 bytes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
!colspan="2"|6 bytes
|-
|<pre>00 00... BRK 0    &times; 3</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #5
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #5
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 88    LDY #136 ;hides 'DEY'
88  ... DEY      &times; 2
30 FB    BMI *-3
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 05    LDX #5 ;hides 'ORA zp'
CA      DEX ;first loop only
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and X; and writes in stack
|-
|<pre>08      PHP
A0 05    LDY #5 ;hides 'ORA zp'
88      DEY ;first loop only
88      DEY
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
A9 2A    LDA #$2A ;hides 'ROL A'
EA  ... NOP      &times; 3
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 2A    LDA #$2A ;hides 'ROL A'
EA  ... NOP      &times; 3
10 FA    BPL *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 05    LDX #5
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>20 xx xx JSR @rts15
20 xx xx JSR @rts12&times; 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>08      PHP
AA      TAX
A9      LDA #1
20 xx xx JSR delay_a_25_clocks
8C      TXA
28      PLP</pre>||Clobbers X; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A8      TAY
A9      LDA #1
20 xx xx JSR delay_a_25_clocks
98      TYA
28      PLP</pre>||Clobbers Y; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A2 FA    LDX #250 ;hides 'NOP'
EA      NOP
E8  ... INX      &times; 2
D0 FA    BNE *-4
28      PLP</pre>||Clobbers X; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
A0 7A    LDY #122 ;hides 'NOP'
EA      NOP
C8  ... INY      &times; 2
10 FA    BPL *-4
28      PLP</pre>||Clobbers Y; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A2 04    LDX #4
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 04    LDX #4
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 04    LDY #4
EA      NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 05    LDY #5
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
28      PLP
20 xx xx JSR @rts14&times; 2</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>48      PHA
20 xx xx JSR @rts12&times; 3</pre>||Clobbers S; requires @rts12; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|14 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|15 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|20 bytes
|-
|<pre>18  ... CLC      &times; 18
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 18
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 18
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 18
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|21 bytes
|-
|<pre>EA  ... NOP      &times; 18
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 40 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #13
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 05    LDX #5 ;hides 'ORA zp'
EA      NOP
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers A, X, and Z&N
|-
|<pre>A0 05    LDY #5 ;hides 'ORA zp'
EA      NOP
88      DEY
D0 FB    BNE *-3</pre>||Clobbers A, Y, and Z&N
|-
|<pre>68      PLA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #6
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #6
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00... BRK 0    &times; 2
20 xx xx JSR @rts14</pre>||Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
18  ... CLC      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
18  ... CLC      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A2 06    LDX #6
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 05    LDY #5
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>00 00... BRK 0    &times; 2
08      PHP      \ &times; 2
28      PLP      /</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
88      DEY
30 FC    BMI *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|14 bytes
|-
|<pre>EA  ... NOP      &times; 2
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|20 bytes
|-
|<pre>EA  ... NOP      &times; 20</pre>||No requirements
|-
|}
 
 
=== 41 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|<pre>A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 07    LDY #7
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A0 88    LDY #136 ;hides 'DEY'
88      DEY
30 FC    BMI *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>EA      NOP
00 00... BRK 0    &times; 3</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
08      PHP
A2 06    LDX #6
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>98      TYA
A0 04    LDY #4
EA  ... NOP      &times; 2
88      DEY
D0 FB    BNE *-3
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 06    LDX #6
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>20 xx xx JSR @rts12
20 xx xx JSR @rts14
20 xx xx JSR @rts15</pre>||Requires @rts12, @rts14, and @rts15; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #0
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
88  ... DEY      &times; 2
30 FB    BMI *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|15 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|16 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|21 bytes
|-
|<pre>18  ... CLC      &times; 19
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 19
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 19
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 19
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|22 bytes
|-
|<pre>EA  ... NOP      &times; 19
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 42 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #15
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
!colspan="2"|7 bytes
|-
|<pre>EA      NOP
A2 05    LDX #5 ;hides 'ORA zp'
EA      NOP
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers A, X, and Z&N
|-
|<pre>EA      NOP
A0 05    LDY #5 ;hides 'ORA zp'
EA      NOP
88      DEY
D0 FB    BNE *-3</pre>||Clobbers A, Y, and Z&N
|-
|<pre>A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9      LDA #8
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #8
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
00 00... BRK 0    &times; 3</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
A9 2A    LDA #$2A ;hides 'ROL A'
08      PHP
28      PLP
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 2A    LDA #$2A ;hides 'ROL A'
08      PHP
28      PLP
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
98      TYA
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 F8    LDX #248 ;hides 'SED'
E8  ... INX      &times; 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>08      PHP
A0 88    LDY #136 ;hides 'DEY'
88  ... DEY      &times; 2
30 FB    BMI *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>24 24    BIT $24
00 00... BRK 0    &times; 3</pre>||Clobbers Z&N, and V; requires dummy interrupt handler; and writes in stack
|-
|<pre>85 xx    STA @zptemp
00 00... BRK 0    &times; 3</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
00 00... BRK 0    &times; 2
20 xx xx JSR @rts14</pre>||Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack
|-
|<pre>04 04    NOP $04
00 00... BRK 0    &times; 3</pre>||Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 05    LDY #5
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>20 xx xx JSR @rts14&times; 3</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>20 xx xx JSR @rts12
20 xx xx JSR @rts15&times; 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #1
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
00 00... BRK 0    &times; 2
08      PHP      \ &times; 2
28      PLP      /</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
18  ... CLC      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|15 bytes
|-
|<pre>EA  ... NOP      &times; 3
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|21 bytes
|-
|<pre>EA  ... NOP      &times; 21</pre>||No requirements
|-
|}
 
 
=== 43 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #16
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, S, Z&N, and C
|-
!colspan="2"|6 bytes
|-
|<pre>38  ... SEC      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|<pre>A2 06    LDX #6
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 05    LDY #5
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
B0 FC    BCS *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
18      CLC
10 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
00 00... BRK 0    &times; 3</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>20 xx xx JSR @rts15
20 xx xx JSR @rts14&times; 2</pre>||Requires @rts12, @rts14, and @rts15; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #2
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA      NOP
90 FC    BCC *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>84 xx    STY @zptemp
A0 04    LDY #4
EA  ... NOP      &times; 2
88      DEY
D0 FB    BNE *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|15 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|16 bytes
|-
|<pre>EA  ... NOP      &times; 2
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA  ... NOP      &times; 2
24 24    BIT $24
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      &times; 2
04 04    NOP $04
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|17 bytes
|-
|<pre>EA  ... NOP      &times; 2
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|22 bytes
|-
|<pre>18  ... CLC      &times; 20
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 20
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 20
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 20
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|23 bytes
|-
|<pre>EA  ... NOP      &times; 20
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 44 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #17
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 2
10 FB    BPL *-3</pre>||Clobbers A, Z&N, and C
|-
|<pre>A0 88    LDY #136 ;hides 'DEY'
EA      NOP
88      DEY
30 FB    BMI *-3</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>48      PHA
A9      LDA #10
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #10
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>00 00    BRK 0
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>00 00    BRK 0
08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
|<pre>E6 xx    INC @zptemp
00 00... BRK 0    &times; 3</pre>||Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2
68      PLA</pre>||Clobbers S, Z&N, and C; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
|<pre>48      PHA
08      PHP
A0 88    LDY #136 ;hides 'DEY'
88      DEY
30 FC    BMI *-2
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
|<pre>EA      NOP
48      PHA
00 00... BRK 0    &times; 3</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>C5 C5    CMP $C5
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 04    LDX #4
EA  ... NOP      &times; 2
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 04    LDY #4
EA  ... NOP      &times; 2
88      DEY
D0 FB    BNE *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>20 xx xx JSR @rts14
20 xx xx JSR @rts15&times; 2</pre>||Requires @rts12, @rts14, and @rts15; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #3
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA      NOP ;first loop only
00 00    BRK 0
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N; requires dummy interrupt handler; and writes in stack
|-
|<pre>18      CLC
90 00    BCC *+2
00 00... BRK 0    &times; 3</pre>||Clobbers C; requires dummy interrupt handler; and writes in stack
|-
|<pre>B8      CLV
50 00    BVC *+2
00 00... BRK 0    &times; 3</pre>||Clobbers V; requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
85 xx    STA @zptemp
00 00... BRK 0    &times; 3</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
00 00... BRK 0    &times; 2
20 xx xx JSR @rts14</pre>||Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack
|-
|<pre>EA      NOP
04 04    NOP $04
00 00... BRK 0    &times; 3</pre>||Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 05    LDY #5
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>EA      NOP
20 xx xx JSR @rts14&times; 3</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>EA      NOP
20 xx xx JSR @rts12
20 xx xx JSR @rts15&times; 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
00 00... BRK 0    &times; 2
08      PHP      \ &times; 2
28      PLP      /</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|16 bytes
|-
|<pre>26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|22 bytes
|-
|<pre>EA  ... NOP      &times; 22</pre>||No requirements
|-
|}
 
 
=== 45 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #18
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF
|-
|<pre>EA      NOP
68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, S, Z&N, and C
|-
|<pre>68      PLA
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 07    LDY #7
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 07    LDY #7
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #11
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #11
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA      NOP ;first loop only
10 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA      NOP ;first loop only
10 FC    BPL *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>85 xx    STA @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
A5 xx    LDA @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
00 00... BRK 0    &times; 3</pre>||Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
00 00... BRK 0    &times; 3</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|16 bytes
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|17 bytes
|-
|<pre>EA  ... NOP      &times; 3
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA  ... NOP      &times; 3
24 24    BIT $24
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      &times; 3
04 04    NOP $04
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|18 bytes
|-
|<pre>26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|23 bytes
|-
|<pre>18  ... CLC      &times; 21
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 21
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 21
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 21
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|24 bytes
|-
|<pre>EA  ... NOP      &times; 21
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 46 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 08    LDX #8
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 08    LDY #8
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #19
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>68      PLA
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
28      PLP
00 00... BRK 0    &times; 3</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>8C      TXA
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #5
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
88  ... DEY      &times; 2
30 FB    BMI *-3
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
98      TYA
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA      NOP
20 xx xx JSR @rts14
20 xx xx JSR @rts15&times; 2</pre>||Requires @rts12, @rts14, and @rts15; and writes in stack
|-
|<pre>85 xx    STA @zptemp
68      PLA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
B0 FC    BCS *-2
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, C, and V; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A9 2A    LDA #$2A ;hides 'ROL A'
EA  ... NOP      &times; 3
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|16 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|23 bytes
|-
|<pre>EA  ... NOP      &times; 23</pre>||No requirements
|-
|}
 
 
=== 47 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #20
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68  ... PLA      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, S, Z&N, and C
|-
!colspan="2"|7 bytes
|-
|<pre>BA      TSX
68      PLA
9A      TXS
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, X, Z&N, and C; and unsafe for interrupts
|-
|<pre>A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>EA      NOP
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF
|-
|<pre>F6 F6    INC $F6,X
A0 07    LDY #7
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9      LDA #13
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #13
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>00 00    BRK 0
A0 88    LDY #136 ;hides 'DEY'
88      DEY
30 FC    BMI *-2</pre>||Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>AA      TAX
68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
8C      TXA</pre>||Clobbers X, S, Z&N, and C
|-
|<pre>EA      NOP
68      PLA
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48  ... PHA      &times; 2
A0 07    LDY #7
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>A8      TAY
68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
98      TYA</pre>||Clobbers Y, S, Z&N, and C
|-
|<pre>EA      NOP
68      PLA
A0 07    LDY #7
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 05    LDY #5
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>08      PHP
A2 05    LDX #5 ;hides 'ORA zp'
EA      NOP
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
A0 07    LDY #7
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>08      PHP
A0 05    LDY #5 ;hides 'ORA zp'
EA      NOP
88      DEY
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #6
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
28      PLP
00 00... BRK 0    &times; 2
20 xx xx JSR @rts14</pre>||Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack
|-
|<pre>EA      NOP
48  ... PHA      &times; 2
00 00... BRK 0    &times; 3</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
18  ... CLC      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|17 bytes
|-
|<pre>EA  ... NOP      &times; 2
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|18 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|19 bytes
|-
|<pre>EA      NOP
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|24 bytes
|-
|<pre>18  ... CLC      &times; 22
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 22
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 22
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 22
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|25 bytes
|-
|<pre>EA  ... NOP      &times; 22
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 48 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #21
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 08    LDX #8
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 08    LDY #8
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
68      PLA
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|<pre>08      PHP
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
88      DEY
30 FB    BMI *-3
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>C5 C5    CMP $C5
85 xx    STA @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
A5 xx    LDA @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      &times; 3
84 xx    STY @zptemp
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|16 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|24 bytes
|-
|<pre>EA  ... NOP      &times; 24</pre>||No requirements
|-
|}
 
 
=== 49 cycles ===
{| class="wikitable testtable"
!colspan="2"|4 bytes
|-
|<pre>A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #22
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
48      PHA
90 FC    BCC *-2</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
|<pre>A2 06    LDX #6
48      PHA
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
08      PHP
28      PLP
90 FB    BCC *-3</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
24 24    BIT $24
90 FB    BCC *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A6 A6    LDX $A6
A2 08    LDX #8
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
90 FB    BCC *-3</pre>||Clobbers A, Z&N, and C; and requires @zptemp
|-
|<pre>48      PHA
A9      LDA #15
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #15
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
90 FB    BCC *-3</pre>||Clobbers A, Z&N, and C; and requires support for unofficial opcodes
|-
|<pre>48  ... PHA      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA</pre>||Clobbers S, Z&N, and C; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
|<pre>EA      NOP
68  ... PLA      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, S, Z&N, and C
|-
!colspan="2"|8 bytes
|-
|<pre>C5 C5    CMP $C5
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>26 26    ROL $26
66 26    ROR $26
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|<pre>68      PLA
98      TYA
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #8
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
|<pre>85 xx    STA @zptemp
68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, and C; and requires @zptemp
|-
|<pre>48      PHA
08      PHP
28      PLP
00 00... BRK 0    &times; 3</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
A9 2A    LDA #$2A ;hides 'ROL A'
08      PHP
28      PLP
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 05    LDY #5
EA      NOP
88      DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|18 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      &times; 3
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA  ... NOP      &times; 3
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA  ... NOP      &times; 3
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA  ... NOP      &times; 3
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA  ... NOP      &times; 3
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      &times; 3
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|19 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|20 bytes
|-
|<pre>EA  ... NOP      &times; 2
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|25 bytes
|-
|<pre>18  ... CLC      &times; 23
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 23
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 23
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 23
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|26 bytes
|-
|<pre>EA  ... NOP      &times; 23
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 50 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #23
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
EA      NOP
B0 FB    BCS *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A2 07    LDX #7
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 07    LDY #7
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 08    LDY #8
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
A9      LDA #16
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #16
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
38  ... SEC      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
38  ... SEC      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 06    LDX #6
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 05    LDY #5
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
B0 FC    BCS *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
88      DEY
30 FB    BMI *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|17 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|25 bytes
|-
|<pre>EA  ... NOP      &times; 25</pre>||No requirements
|-
|}
 
 
=== 51 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
30 FC    BMI *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A2 0A    LDX #10
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>20 xx xx JSR @rts12
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C; requires @rts12; and writes in stack
|-
|<pre>48      PHA
A9      LDA #17
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #17
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68  ... PLA      &times; 3
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, S, Z&N, and C
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 2
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 2
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>36 36    ROL $36,X
76 36    ROR $36,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|<pre>08      PHP
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
88      DEY
30 FB    BMI *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>8C      TXA
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #10
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>20 xx xx JSR @rts12
00 00... BRK 0    &times; 3</pre>||Requires dummy interrupt handler, and @rts12; and writes in stack
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>EA  ... NOP      &times; 3
98      TYA
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>F6 F6    INC $F6,X
85 xx    STA @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
A5 xx    LDA @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp, and writable $00-$FF
|-
|<pre>00 00    BRK 0
08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
|<pre>85 xx    STA @zptemp
EA      NOP
68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, and C; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
10 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|18 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|19 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|21 bytes
|-
|<pre>EA  ... NOP      &times; 3
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|26 bytes
|-
|<pre>18  ... CLC      &times; 24
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 24
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 24
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 24
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|27 bytes
|-
|<pre>EA  ... NOP      &times; 24
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 52 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #25
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA      NOP ;first loop only
EA      NOP
10 FB    BPL *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>EA      NOP
A2 07    LDX #7
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>48      PHA
A9      LDA #18
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #18
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
48      PHA
90 FC    BCC *-2</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 08    LDY #8
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>F6 F6    INC $F6,X
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>00 00... BRK 0    &times; 4</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA</pre>||Clobbers S, Z&N, and C; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 08    LDY #8
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #11
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA      NOP ;first loop only
10 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|18 bytes
|-
|<pre>EA  ... NOP      &times; 2
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|26 bytes
|-
|<pre>EA  ... NOP      &times; 26</pre>||No requirements
|-
|}
 
 
=== 53 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #26
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68      PLA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|6 bytes
|-
|<pre>98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA      NOP
A2 0A    LDX #10
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>08      PHP
A2 08    LDX #8
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 08    LDY #8
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #19
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #19
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>85 xx    STA @zptemp
68  ... PLA      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, and C; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      &times; 3
84 xx    STY @zptemp
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|19 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|20 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|22 bytes
|-
|<pre>EA  ... NOP      &times; 4
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|27 bytes
|-
|<pre>18  ... CLC      &times; 25
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 25
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 25
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 25
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|28 bytes
|-
|<pre>EA  ... NOP      &times; 25
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 54 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #27
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>E6 xx    INC @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
48  ... PHA      &times; 2
10 FB    BPL *-3</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
|<pre>48      PHA
A2 0A    LDX #10
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>A0 88    LDY #136 ;hides 'DEY'
68      PLA
88      DEY
30 FB    BMI *-3</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 3
10 FA    BPL *-4</pre>||Clobbers A, Z&N, and C
|-
|<pre>A6 A6    LDX $A6
A2 0A    LDX #10
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #20
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #20
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 07    LDY #7
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
BA      TSX
68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
9A      TXS
28      PLP</pre>||Clobbers A, and X; writes in stack; and unsafe for interrupts
|-
|<pre>08      PHP
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>EA      NOP
F6 F6    INC $F6,X
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
EA      NOP
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #13
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
00 00... BRK 0    &times; 4</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
48  ... PHA      &times; 3
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA</pre>||Clobbers S, Z&N, and C; and writes in stack
|-
|<pre>EA      NOP
48  ... PHA      &times; 2
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 05    LDY #5
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 05    LDY #5
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 08    LDY #8
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 07    LDY #7
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|18 bytes
|-
|<pre>36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|27 bytes
|-
|<pre>EA  ... NOP      &times; 27</pre>||No requirements
|-
|}
 
 
=== 55 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, and C
|-
|<pre>A2 F8    LDX #248 ;hides 'SED'
E8      INX
D0 FC    BNE *-2</pre>||Clobbers X, Z&N, and D
|-
|<pre>A0 F8    LDY #248 ;hides 'SED'
C8      INY
D0 FC    BNE *-2</pre>||Clobbers Y, Z&N, and D
|-
!colspan="2"|6 bytes
|-
|<pre>F6 F6    INC $F6,X
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>A2 06    LDX #6
68      PLA
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48  ... PHA      &times; 2
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>A0 05    LDY #5
68      PLA
88      DEY
10 FC    BPL *-2</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>A2 06    LDX #6
EA  ... NOP      &times; 2
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, and Z&N
|-
|<pre>A0 05    LDY #5
EA  ... NOP      &times; 2
88      DEY
10 FB    BPL *-3</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #21
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #21
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 08    LDX #8
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 08    LDY #8
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|19 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|20 bytes
|-
|<pre>EA  ... NOP      &times; 2
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA  ... NOP      &times; 2
24 24    BIT $24
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      &times; 2
04 04    NOP $04
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|21 bytes
|-
|<pre>EA  ... NOP      &times; 2
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|22 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|28 bytes
|-
|<pre>18  ... CLC      &times; 26
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 26
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 26
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 26
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|29 bytes
|-
|<pre>EA  ... NOP      &times; 26
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 56 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #29
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>08      PHP
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>E6 xx    INC @zptemp
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
30 FC    BMI *-2</pre>||Clobbers A, Z&N, C, and V; and requires @zptemp
|-
|<pre>A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
10 FA    BPL *-4</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>48      PHA
A9      LDA #22
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #22
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
08      PHP
A2 08    LDX #8
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
08      PHP
28      PLP
90 FB    BCC *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
24 24    BIT $24
90 FB    BCC *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 06    LDX #6
24 24    BIT $24
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #15
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 07    LDY #7
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|19 bytes
|-
|<pre>EA      NOP
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|28 bytes
|-
|<pre>EA  ... NOP      &times; 28</pre>||No requirements
|-
|}
 
 
=== 57 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #30
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, and C
|-
|<pre>A2 08    LDX #8
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 07    LDY #7
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #23
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #23
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
EA      NOP
B0 FB    BCS *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
EA      NOP
B0 FB    BCS *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
98      TYA
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 07    LDX #7
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 07    LDY #7
EA      NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 08    LDY #8
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #16
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
38  ... SEC      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|20 bytes
|-
|<pre>C5 C5    CMP $C5
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|21 bytes
|-
|<pre>4C xx xx JMP *+3
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|22 bytes
|-
|<pre>36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|29 bytes
|-
|<pre>18  ... CLC      &times; 27
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 27
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 27
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 27
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|30 bytes
|-
|<pre>EA  ... NOP      &times; 27
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 58 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #31
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>38      SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A      NOP ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
30 FC    BMI *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
30 FC    BMI *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, and C
|-
|<pre>08      PHP
A2 0A    LDX #10
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>E6 xx    INC @zptemp
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>20 xx xx JSR @rts12
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #17
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A4 xx    LDY @zptemp</pre>||Clobbers S, and Z&N; requires @zptemp; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 2
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>84 xx    STY @zptemp
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|20 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|29 bytes
|-
|<pre>EA  ... NOP      &times; 29</pre>||No requirements
|-
|}
 
 
=== 59 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #32
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
10 FB    BPL *-3</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C
|-
|<pre>48      PHA
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>68      PLA
A2 F8    LDX #248 ;hides 'SED'
E8      INX
D0 FC    BNE *-2</pre>||Clobbers A, X, S, Z&N, and D
|-
|<pre>48      PHA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>68      PLA
A0 F8    LDY #248 ;hides 'SED'
C8      INY
D0 FC    BNE *-2</pre>||Clobbers A, Y, S, Z&N, and D
|-
!colspan="2"|7 bytes
|-
|<pre>38  ... SEC      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
38      SEC
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, and C
|-
|<pre>98      TYA
A0 F8    LDY #248 ;hides 'SED'
C8      INY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, Z&N, and D
|-
|<pre>A6 A6    LDX $A6
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #25
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #25
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY</pre>||Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>00 00    BRK 0
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>00 00    BRK 0
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA      NOP ;first loop only
EA      NOP
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA      NOP ;first loop only
EA      NOP
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>98      TYA
A0 05    LDY #5
EA  ... NOP      &times; 2
88      DEY
10 FB    BPL *-3
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA      NOP
08      PHP
A2 07    LDX #7
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #18
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 08    LDY #8
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
28      PLP
00 00... BRK 0    &times; 4</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 07    LDY #7
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|21 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      &times; 2
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      &times; 2
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|22 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|23 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|30 bytes
|-
|<pre>18  ... CLC      &times; 28
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 28
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 28
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 28
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|31 bytes
|-
|<pre>EA  ... NOP      &times; 28
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 60 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #33
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68      PLA
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #26
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #26
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A2 0A    LDX #10
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9      LDA #19
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>E6 xx    INC @zptemp
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|20 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|30 bytes
|-
|<pre>EA  ... NOP      &times; 30</pre>||No requirements
|-
|}
 
 
=== 61 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 0C    LDX #12
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #34
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
10 FB    BPL *-3</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
E6 xx    INC @zptemp
90 FB    BCC *-3</pre>||Clobbers A, Z&N, and C; and requires @zptemp
|-
|<pre>48      PHA
A9      LDA #27
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #27
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 07    LDY #7
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
E6 xx    INC @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28      PLP</pre>||Clobbers Y; requires @zptemp; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
30 FC    BMI *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
30 FC    BMI *-2
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 0A    LDX #10
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 3
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 3
10 FA    BPL *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 0A    LDX #10
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>85 xx    STA @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2
A5 xx    LDA @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp
|-
|<pre>84 xx    STY @zptemp
A0 F8    LDY #248 ;hides 'SED'
C8      INY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N, and D; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #20
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 07    LDY #7
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
!colspan="2"|11 bytes
|-
|<pre>84 xx    STY @zptemp
A0 05    LDY #5
EA  ... NOP      &times; 2
88      DEY
10 FB    BPL *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
EA      NOP
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>EA      NOP
08      PHP
28      PLP
00 00... BRK 0    &times; 4</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
48  ... PHA      &times; 2
08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 05    LDY #5
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|21 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|22 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|23 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|24 bytes
|-
|<pre>EA  ... NOP      &times; 2
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|31 bytes
|-
|<pre>18  ... CLC      &times; 29
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 29
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 29
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 29
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|32 bytes
|-
|<pre>EA  ... NOP      &times; 29
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 62 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 88    LDX #136 ;hides 'DEY'
CA      DEX
30 FC    BMI *-2</pre>||Clobbers X, Y, and Z&N
|-
|<pre>A9      LDA #35
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>00 00    BRK 0
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1</pre>||Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>68      PLA
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, and C
|-
|<pre>08      PHP
A2 F8    LDX #248 ;hides 'SED'
E8      INX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>68      PLA
48      PHA
A2 F8    LDX #248 ;hides 'SED'
E8      INX
D0 FC    BNE *-2</pre>||Clobbers A, X, Z&N, and D
|-
|<pre>08      PHP
A0 F8    LDY #248 ;hides 'SED'
C8      INY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>68      PLA
48      PHA
A0 F8    LDY #248 ;hides 'SED'
C8      INY
D0 FC    BNE *-2</pre>||Clobbers A, Y, Z&N, and D
|-
|<pre>A2 0B    LDX #11
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>EA      NOP
68      PLA
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>EA      NOP
68      PLA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 0A    LDY #10
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #21
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A4 xx    LDY @zptemp
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
08      PHP
38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28      PLP
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|21 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|31 bytes
|-
|<pre>EA  ... NOP      &times; 31</pre>||No requirements
|-
|}
 
 
=== 63 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #36
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
48      PHA
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 0C    LDX #12
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; and requires @zptemp
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; and requires support for unofficial opcodes
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 0B    LDA #11
E9 01    SBC #1
10 FB    BPL *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
4C xx xx JMP *+3
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C; and not relocatable code
|-
|<pre>08      PHP
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #29
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #29
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68  ... PLA      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C
|-
!colspan="2"|8 bytes
|-
|<pre>18  ... CLC      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
10 FB    BPL *-3</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>48      PHA
98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 F8    LDY #248 ;hides 'SED'
C8      INY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, S, Z&N, and D
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>E6 xx    INC @zptemp
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
30 FC    BMI *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
E6 xx    INC @zptemp
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
30 FC    BMI *-2
28      PLP</pre>||Clobbers A; requires @zptemp; and writes in stack
|-
|<pre>48      PHA
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>08      PHP
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
28      PLP</pre>||Clobbers A; requires @rts12, and @rts14; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #22
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
|<pre>48      PHA
08      PHP
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
A5 A5    LDA $A5
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 07    LDY #7
EA      NOP
88      DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
24 24    BIT $24
90 FB    BCC *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|22 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|23 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|25 bytes
|-
|<pre>EA  ... NOP      &times; 3
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|32 bytes
|-
|<pre>18  ... CLC      &times; 30
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 30
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 30
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 30
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|33 bytes
|-
|<pre>EA  ... NOP      &times; 30
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 64 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #37
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 08    LDX #8
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 08    LDY #8
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
EA  ... NOP      &times; 2
B0 FA    BCS *-4</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>48      PHA
A9      LDA #30
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #30
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
48  ... PHA      &times; 2
38      SEC
10 FA    BPL *-4</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
18      CLC
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
18      CLC
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 4
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C
|-
|<pre>08      PHP
A2 08    LDX #8
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 07    LDY #7
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #23
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
EA      NOP
B0 FB    BCS *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|22 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|32 bytes
|-
|<pre>EA  ... NOP      &times; 32</pre>||No requirements
|-
|}
 
 
=== 65 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #38
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
48      PHA
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
|<pre>A2 08    LDX #8
48      PHA
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>68      PLA
A2 0C    LDX #12
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>A0 07    LDY #7
48      PHA
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>68      PLA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 0C    LDX #12
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #31
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #31
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
38      SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A      NOP ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A      NOP ;first loop only
B0 FC    BCS *-2
28      PLP</pre>||Clobbers A; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2
68      PLA</pre>||Clobbers S, Z&N, and C; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
30 FC    BMI *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>85 xx    STA @zptemp
68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, and C; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|23 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|24 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|26 bytes
|-
|<pre>26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|33 bytes
|-
|<pre>18  ... CLC      &times; 31
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 31
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 31
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 31
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|34 bytes
|-
|<pre>EA  ... NOP      &times; 31
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 66 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #39
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
48      PHA
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #32
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #32
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>38      SEC
A9 08    LDA #8
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; and requires @zptemp
|-
|<pre>04 04    NOP $04
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; and requires support for unofficial opcodes
|-
|<pre>68  ... PLA      &times; 2
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C
|-
|<pre>48      PHA
08      PHP
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 F8    LDY #248 ;hides 'SED'
C8      INY
D0 FC    BNE *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N, and D; and writes in stack
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 4
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C
|-
|<pre>68      PLA
48      PHA
98      TYA
A0 F8    LDY #248 ;hides 'SED'
C8      INY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, Z&N, and D
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>8C      TXA
A2 0B    LDX #11
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #25
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>EA  ... NOP      &times; 3
98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>F6 F6    INC $F6,X
48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>00 00    BRK 0
08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA      NOP ;first loop only
EA      NOP
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|22 bytes
|-
|<pre>36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|33 bytes
|-
|<pre>EA  ... NOP      &times; 33</pre>||No requirements
|-
|}
 
 
=== 67 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #40
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
48      PHA
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>BA      TSX
A9 4A    LDA #$4A ;hides 'LSR A'
48      PHA
D0 FC    BNE *-2
9A      TXS</pre>||Clobbers A, X, Z&N, and C; and writes in stack
|-
|<pre>A2 0C    LDX #12
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
F6 F6    INC $F6,X
90 FB    BCC *-3</pre>||Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF
|-
|<pre>A0 05    LDY #5
F6 F6    INC $F6,X
88      DEY
10 FB    BPL *-3</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9      LDA #33
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #33
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A2 06    LDX #6
48  ... PHA      &times; 2
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>A2 06    LDX #6
EA      NOP
68      PLA
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>A0 05    LDY #5
48  ... PHA      &times; 2
88      DEY
10 FB    BPL *-3</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>A0 05    LDY #5
EA      NOP
68      PLA
88      DEY
10 FB    BPL *-3</pre>||Clobbers A, Y, S, and Z&N
|-
|<pre>68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; and requires @zptemp
|-
|<pre>68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; and requires support for unofficial opcodes
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>A6 A6    LDX $A6
A2 08    LDX #8
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 08    LDY #8
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #26
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|23 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|24 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|25 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|26 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|34 bytes
|-
|<pre>18  ... CLC      &times; 32
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 32
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 32
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 32
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|35 bytes
|-
|<pre>EA  ... NOP      &times; 32
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 68 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #41
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 0C    LDA #12
E9 01    SBC #1
10 FB    BPL *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 0C    LDX #12
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #34
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #34
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
48      PHA
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 08    LDY #8
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #27
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 07    LDY #7
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
30 FC    BMI *-2
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 3
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>85 xx    STA @zptemp
68      PLA
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2
A5 xx    LDA @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
!colspan="2"|12 bytes
|-
|<pre>E6 xx    INC @zptemp
84 xx    STY @zptemp
A0 07    LDY #7
EA      NOP
88      DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|23 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|34 bytes
|-
|<pre>EA  ... NOP      &times; 34</pre>||No requirements
|-
|}
 
 
=== 69 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 0A    LDX #10 ;hides 'ASL A'
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers A, X, Z&N, and C
|-
|<pre>A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #42
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
38      SEC
10 FA    BPL *-4</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>A6 A6    LDX $A6
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>08      PHP
A2 88    LDX #136 ;hides 'DEY'
CA      DEX
30 FC    BMI *-2
28      PLP</pre>||Clobbers X, and Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #35
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #35
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF
|-
|<pre>00 00    BRK 0
08      PHP
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28      PLP</pre>||Clobbers Y; requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|24 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|25 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|26 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|35 bytes
|-
|<pre>18  ... CLC      &times; 33
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 33
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 33
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 33
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|36 bytes
|-
|<pre>EA  ... NOP      &times; 33
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 70 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #43
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68      PLA
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #36
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #36
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 0C    LDX #12
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; requires @zptemp; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 0B    LDA #11
E9 01    SBC #1
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
4C xx xx JMP *+3
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, and C; writes in stack; and not relocatable code
|-
|<pre>08      PHP
38      SEC
A9 0B    LDA #11
E9 01    SBC #1
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #29
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
18  ... CLC      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 08    LDY #8
EA      NOP
88      DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48  ... PHA      &times; 2
98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
A5 A5    LDA $A5
98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
48      PHA
E6 xx    INC @zptemp
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
30 FC    BMI *-2
68      PLA
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
A5 A5    LDA $A5
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|24 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|35 bytes
|-
|<pre>EA  ... NOP      &times; 35</pre>||No requirements
|-
|}
 
 
=== 71 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0D    LDY #13
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #44
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #37
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #37
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
A2 08    LDX #8
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 08    LDY #8
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
EA  ... NOP      &times; 2
B0 FA    BCS *-4
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
EA  ... NOP      &times; 2
B0 FA    BCS *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>8C      TXA
A2 0C    LDX #12
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #30
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
18      CLC
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 08    LDY #8
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|25 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|26 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|27 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|36 bytes
|-
|<pre>18  ... CLC      &times; 34
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 34
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 34
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 34
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|37 bytes
|-
|<pre>EA  ... NOP      &times; 34
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 72 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #45
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A2 0A    LDX #10 ;hides 'ASL A'
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers A, X, S, Z&N, and C; and writes in stack
|-
|<pre>48      PHA
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 0A    LDX #10 ;hides 'ASL A'
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers A, X, Z&N, and C
|-
|<pre>A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2</pre>||Clobbers Y, and Z&N
|-
|<pre>A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>48      PHA
A9      LDA #38
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #38
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>48      PHA
08      PHP
A2 88    LDX #136 ;hides 'DEY'
CA      DEX
30 FC    BMI *-2
28      PLP</pre>||Clobbers X, Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 08    LDX #8
24 24    BIT $24
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 07    LDY #7
24 24    BIT $24
88      DEY
10 FB    BPL *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #31
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A      NOP ;first loop only
B0 FC    BCS *-2
68      PLA
28      PLP</pre>||Requires support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|24 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|36 bytes
|-
|<pre>EA  ... NOP      &times; 36</pre>||No requirements
|-
|}
 
 
=== 73 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #46
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #39
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #39
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9      LDA #32
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68      PLA</pre>||Clobbers S, Z&N, and C; requires @zptemp; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and S; requires @zptemp; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
68      PLA</pre>||Clobbers S, Z&N, and C; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>85 xx    STA @zptemp
68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, and C; and requires @zptemp, and support for unofficial opcodes
|-
!colspan="2"|12 bytes
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 08    LDX #8
EA      NOP
CA      DEX
10 FC    BPL *-2
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|25 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|26 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|27 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|28 bytes
|-
|<pre>EA  ... NOP      &times; 2
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|37 bytes
|-
|<pre>18  ... CLC      &times; 35
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 35
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 35
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 35
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|38 bytes
|-
|<pre>EA  ... NOP      &times; 35
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 74 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #47
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #40
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #40
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C
|-
|<pre>68      PLA
98      TYA
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
BA      TSX
A9 4A    LDA #$4A ;hides 'LSR A'
48      PHA
D0 FC    BNE *-2
9A      TXS
28      PLP</pre>||Clobbers A, and X; and writes in stack
|-
|<pre>08      PHP
A2 0C    LDX #12
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
F6 F6    INC $F6,X
90 FB    BCC *-3
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
F6 F6    INC $F6,X
90 FB    BCC *-3
28      PLP</pre>||Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
A0 05    LDY #5
F6 F6    INC $F6,X
88      DEY
10 FB    BPL *-3
28      PLP</pre>||Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #33
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 08    LDX #8
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 08    LDY #8
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
08      PHP
98      TYA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A2 08    LDX #8
24 24    BIT $24
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 07    LDY #7
24 24    BIT $24
88      DEY
10 FB    BPL *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 0B    LDY #11
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|25 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|37 bytes
|-
|<pre>EA  ... NOP      &times; 37</pre>||No requirements
|-
|}
 
 
=== 75 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #48
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68      PLA
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #41
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #41
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 0C    LDA #12
E9 01    SBC #1
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 0C    LDA #12
E9 01    SBC #1
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #34
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00    BRK 0
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 08    LDY #8
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|26 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|27 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|29 bytes
|-
|<pre>EA  ... NOP      &times; 3
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|38 bytes
|-
|<pre>18  ... CLC      &times; 36
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 36
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 36
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 36
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|39 bytes
|-
|<pre>EA  ... NOP      &times; 36
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 76 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 0E    LDX #14
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #49
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$08'
08      PHP ;first loop only
30 FC    BMI *-2</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>08      PHP
A2 0A    LDX #10 ;hides 'ASL A'
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A, and X; and writes in stack
|-
|<pre>08      PHP
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #42
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #42
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
48      PHA
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>E6 xx    INC @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; and requires @zptemp
|-
|<pre>04 04    NOP $04
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
|-
|<pre>00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
38      SEC
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
38      SEC
10 FA    BPL *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #35
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2
28      PLP
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|26 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|38 bytes
|-
|<pre>EA  ... NOP      &times; 38</pre>||No requirements
|-
|}
 
 
=== 77 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #50
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A2 0E    LDX #14
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9      LDA #43
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #43
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A2 0A    LDX #10 ;hides 'ASL A'
CA      DEX
D0 FC    BNE *-2
03 xx    SLO (@ptrtemp,X)</pre>||Clobbers A, X, Z&N, and C; and requires @ptrtemp, and support for unofficial opcodes
|-
|<pre>A0 0A    LDY #10 ;hides 'ASL A'
88      DEY
D0 FC    BNE *-2
13 xx    SLO (@ptrtemp,Y)</pre>||Clobbers A, Y, Z&N, and C; and requires @ptrtemp, and support for unofficial opcodes
|-
|<pre>48  ... PHA      &times; 2
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48  ... PHA      &times; 2
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
|<pre>68      PLA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V; and requires support for unofficial opcodes
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #36
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 0B    LDA #11
E9 01    SBC #1
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|27 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|28 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|30 bytes
|-
|<pre>26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|39 bytes
|-
|<pre>18  ... CLC      &times; 37
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 37
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 37
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 37
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|40 bytes
|-
|<pre>EA  ... NOP      &times; 37
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 78 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #51
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 0A    LDX #10
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0B    LDY #11
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
|<pre>38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08      PHP ;first loop only
30 FC    BMI *-2</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 0E    LDA #14
E9 01    SBC #1
10 FB    BPL *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #44
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #44
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>68      PLA
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #37
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A4 xx    LDY @zptemp</pre>||Clobbers S, and Z&N; requires @zptemp; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
EA  ... NOP      &times; 2
B0 FA    BCS *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>84 xx    STY @zptemp
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|26 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|39 bytes
|-
|<pre>EA  ... NOP      &times; 39</pre>||No requirements
|-
|}
 
 
=== 79 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #52
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A0 88    LDY #136 ;hides 'DEY'
48      PHA
30 FC    BMI *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A0 88    LDY #136 ;hides 'DEY'
85 xx    STA @zptemp
30 FB    BMI *-3</pre>||Clobbers Y, and Z&N; and requires @zptemp
|-
|<pre>A0 88    LDY #136 ;hides 'DEY'
04 04    NOP $04
30 FB    BMI *-3</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
48      PHA
18      CLC
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
|<pre>48      PHA
A2 0E    LDX #14
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
B8      CLV
50 00    BVC *+2
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A6 A6    LDX $A6
A2 0E    LDX #14
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
18      CLC
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C; and requires @zptemp
|-
|<pre>48      PHA
A9      LDA #45
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #45
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
18      CLC
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C; and requires support for unofficial opcodes
|-
!colspan="2"|8 bytes
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 2
08      PHP
28      PLP
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
4C xx xx JMP *+3
18      CLC
D0 F9    BNE *-5</pre>||Clobbers A, Z&N, and C; and not relocatable code
|-
|<pre>68      PLA
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
|<pre>48      PHA
08      PHP
A2 0A    LDX #10 ;hides 'ASL A'
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A, X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 0A    LDX #10 ;hides 'ASL A'
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A, and X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #38
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
08      PHP
98      TYA
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A2 0D    LDX #13
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|27 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|28 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|29 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|30 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|40 bytes
|-
|<pre>18  ... CLC      &times; 38
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 38
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 38
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 38
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|41 bytes
|-
|<pre>EA  ... NOP      &times; 38
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 80 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #53
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 88    LDX #136 ;hides 'DEY'
EA      NOP
CA      DEX
30 FB    BMI *-3</pre>||Clobbers X, Y, and Z&N
|-
|<pre>68      PLA
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08      PHP ;first loop only
30 FC    BMI *-2</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
|<pre>68      PLA
A2 0E    LDX #14
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 0E    LDX #14
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #46
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #46
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #39
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Clobbers S; requires @zptemp; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Clobbers S; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 08    LDA #8
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|27 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|40 bytes
|-
|<pre>EA  ... NOP      &times; 40</pre>||No requirements
|-
|}
 
 
=== 81 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 0F    LDX #15
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0F    LDY #15
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #54
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
48      PHA
30 FB    BMI *-3</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A9 69    LDA #$69 ;hides 'ADC #$18'
18      CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4</pre>||Clobbers A, Z&N, C, and V; and requires @zptemp
|-
|<pre>48      PHA
A9      LDA #47
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #47
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4</pre>||Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
|-
|<pre>18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
48      PHA
18      CLC
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
B8      CLV
50 00    BVC *+2
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
85 xx    STA @zptemp
18      CLC
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C; and requires @zptemp
|-
|<pre>18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts15
90 FA    BCC *-4</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack
|-
|<pre>18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
04 04    NOP $04
18      CLC
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C; and requires support for unofficial opcodes
|-
|<pre>18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA      NOP
00 00    BRK 0
90 FA    BCC *-4</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 2
08      PHP
28      PLP
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
4C xx xx JMP *+3
18      CLC
D0 F9    BNE *-5</pre>||Clobbers A, Z&N, and C; and not relocatable code
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>8C      TXA
A2 0E    LDX #14
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #40
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
68      PLA</pre>||Clobbers S, Z&N, and C; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>C5 C5    CMP $C5
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
48      PHA
98      TYA
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
F6 F6    INC $F6,X
90 FB    BCC *-3
68      PLA
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|28 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|29 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|30 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|41 bytes
|-
|<pre>18  ... CLC      &times; 39
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 39
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 39
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 39
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|42 bytes
|-
|<pre>EA  ... NOP      &times; 39
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 82 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #55
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 08    LDX #8
68      PLA
CA      DEX
10 FC    BPL *-2</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48      PHA
A0 88    LDY #136 ;hides 'DEY'
48      PHA
30 FC    BMI *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>A0 08    LDY #8
68      PLA
88      DEY
10 FC    BPL *-2</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>A2 08    LDX #8
EA  ... NOP      &times; 2
CA      DEX
10 FB    BPL *-3</pre>||Clobbers X, and Z&N
|-
|<pre>A0 08    LDY #8
EA  ... NOP      &times; 2
88      DEY
10 FB    BPL *-3</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #48
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #48
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
48      PHA
18      CLC
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 0B    LDY #11
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #41
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 0C    LDA #12
E9 01    SBC #1
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|28 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|41 bytes
|-
|<pre>EA  ... NOP      &times; 41</pre>||No requirements
|-
|}
 
 
=== 83 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #56
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, V, and D
|-
|<pre>EA      NOP
A2 0F    LDX #15
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 0F    LDA #15
E9 01    SBC #1
10 FB    BPL *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 0E    LDX #14
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #49
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #49
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>98      TYA
A0 88    LDY #136 ;hides 'DEY'
48      PHA
30 FC    BMI *-2
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 88    LDY #136 ;hides 'DEY'
85 xx    STA @zptemp
30 FB    BMI *-3
A8      TAY</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>98      TYA
A0 88    LDY #136 ;hides 'DEY'
04 04    NOP $04
30 FB    BMI *-3
A8      TAY</pre>||Clobbers A, and Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #42
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>E6 xx    INC @zptemp
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
E6 xx    INC @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; requires @zptemp; and writes in stack
|-
|<pre>04 04    NOP $04
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>04 04    NOP $04
08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; requires support for unofficial opcodes; and writes in stack
|-
|<pre>00 00    BRK 0
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
|<pre>48      PHA
08      PHP
98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A8      TAY
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
38      SEC
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>85 xx    STA @zptemp
68      PLA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, C, and V; and requires @zptemp, and support for unofficial opcodes
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      &times; 3
84 xx    STY @zptemp
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|29 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|30 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|31 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|42 bytes
|-
|<pre>18  ... CLC      &times; 40
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 40
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 40
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 40
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|43 bytes
|-
|<pre>EA  ... NOP      &times; 40
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 84 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #57
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A2 0F    LDX #15
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 0F    LDX #15
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4</pre>||Clobbers A, Z&N, and C; requires @rts12; and writes in stack
|-
|<pre>48      PHA
A9      LDA #50
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #50
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68  ... PLA      &times; 2
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08      PHP ;first loop only
30 FC    BMI *-2</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
E6 xx    INC @zptemp
28      PLP
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C; requires @zptemp; and writes in stack
|-
|<pre>00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 0E    LDX #14
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #43
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A2 0A    LDX #10 ;hides 'ASL A'
CA      DEX
D0 FC    BNE *-2
03 xx    SLO (@ptrtemp,X)
28      PLP</pre>||Clobbers A, and X; requires @ptrtemp, and support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
A0 0A    LDY #10 ;hides 'ASL A'
88      DEY
D0 FC    BNE *-2
13 xx    SLO (@ptrtemp,Y)
28      PLP</pre>||Clobbers A, and Y; requires @ptrtemp, and support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
08      PHP
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0B    LDY #11
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|28 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|42 bytes
|-
|<pre>EA  ... NOP      &times; 42</pre>||No requirements
|-
|}
 
 
=== 85 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #58
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 0C    LDX #12
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
A9      LDA #51
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #51
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
A2 0A    LDX #10
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0B    LDY #11
EA      NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 0E    LDA #14
E9 01    SBC #1
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 0E    LDA #14
E9 01    SBC #1
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #44
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
48      PHA
30 FC    BMI *-2
A4 xx    LDY @zptemp</pre>||Clobbers S, and Z&N; requires @zptemp; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
04 04    NOP $04
30 FB    BMI *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
|-
!colspan="2"|11 bytes
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 0E    LDX #14
CA      DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|29 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|30 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|31 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|32 bytes
|-
|<pre>EA  ... NOP      &times; 2
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|43 bytes
|-
|<pre>18  ... CLC      &times; 41
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 41
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 41
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 41
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|44 bytes
|-
|<pre>EA  ... NOP      &times; 41
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 86 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 11    LDX #17
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 10    LDY #16
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #59
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #52
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #52
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, V, and D; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A5 A5    LDA $A5
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, V, and D
|-
|<pre>08      PHP
A0 88    LDY #136 ;hides 'DEY'
85 xx    STA @zptemp
30 FB    BMI *-3
28      PLP</pre>||Clobbers Y; requires @zptemp; and writes in stack
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4</pre>||Clobbers A, Z&N, and C; requires @rts12; and writes in stack
|-
|<pre>08      PHP
A0 88    LDY #136 ;hides 'DEY'
04 04    NOP $04
30 FB    BMI *-3
28      PLP</pre>||Clobbers Y; requires support for unofficial opcodes; and writes in stack
|-
|<pre>00 00    BRK 0
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
48      PHA
30 FC    BMI *-2
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 0E    LDX #14
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
B8      CLV
50 00    BVC *+2
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
B8      CLV
50 00    BVC *+2
D0 FA    BNE *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>98      TYA
A0 08    LDY #8
EA  ... NOP      &times; 2
88      DEY
10 FB    BPL *-3
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 0E    LDX #14
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
18      CLC
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #45
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
18      CLC
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, and C; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 2
08      PHP
28      PLP
10 F9    BPL *-5
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
48      PHA
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 0D    LDY #13
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|29 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|43 bytes
|-
|<pre>EA  ... NOP      &times; 43</pre>||No requirements
|-
|}
 
 
=== 87 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #60
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
48  ... PHA      &times; 2
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
|<pre>A2 F8    LDX #248 ;hides 'SED'
68      PLA
E8      INX
D0 FB    BNE *-3</pre>||Clobbers A, X, S, Z&N, and D
|-
|<pre>A0 F8    LDY #248 ;hides 'SED'
68      PLA
C8      INY
D0 FB    BNE *-3</pre>||Clobbers A, Y, S, Z&N, and D
|-
!colspan="2"|7 bytes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 3
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C
|-
|<pre>EA      NOP
A2 0C    LDX #12
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #53
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #53
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 88    LDX #136 ;hides 'DEY'
EA      NOP
CA      DEX
30 FB    BMI *-3
28      PLP</pre>||Clobbers X, and Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 0E    LDX #14
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #46
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|30 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|31 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|33 bytes
|-
|<pre>EA  ... NOP      &times; 3
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|44 bytes
|-
|<pre>18  ... CLC      &times; 42
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 42
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 42
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 42
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|45 bytes
|-
|<pre>EA  ... NOP      &times; 42
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 88 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #61
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, Z&N, C, V, and D
|-
|<pre>EA      NOP
A2 11    LDX #17
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 10    LDY #16
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 10    LDA #16
E9 01    SBC #1
10 FB    BPL *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 0F    LDX #15
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #54
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #54
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
98      TYA
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
A9 69    LDA #$69 ;hides 'ADC #$18'
18      CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4
68      PLA</pre>||Clobbers Z&N, C, and V; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
A9 69    LDA #$69 ;hides 'ADC #$18'
18      CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4
28      PLP</pre>||Clobbers A; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #47
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
68      PLA</pre>||Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
28      PLP</pre>||Clobbers A; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
B8      CLV
50 00    BVC *+2
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
B8      CLV
50 00    BVC *+2
D0 FA    BNE *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
85 xx    STA @zptemp
18      CLC
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts15
90 FA    BCC *-4
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
04 04    NOP $04
18      CLC
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, and C; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA      NOP
00 00    BRK 0
90 FA    BCC *-4
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
48      PHA
30 FC    BMI *-2
A4 xx    LDY @zptemp</pre>||Clobbers S, and Z&N; requires @zptemp; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA  ... NOP      &times; 2
08      PHP
28      PLP
10 F9    BPL *-5
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 08    LDY #8
EA  ... NOP      &times; 2
88      DEY
10 FB    BPL *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|30 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|44 bytes
|-
|<pre>EA  ... NOP      &times; 44</pre>||No requirements
|-
|}
 
 
=== 89 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #62
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 0A    LDX #10 ;hides 'ASL A'
EA      NOP
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers A, X, Z&N, and C
|-
|<pre>A0 88    LDY #136 ;hides 'DEY'
EA  ... NOP      &times; 2
30 FB    BMI *-3</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>A2 0A    LDX #10
48      PHA
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 11    LDX #17
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A9 69    LDA #$69 ;hides 'ADC #$18'
18      CLC ;first loop only
F6 F6    INC $F6,X
90 FA    BCC *-4</pre>||Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9      LDA #55
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #55
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
48  ... PHA      &times; 2
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A2 08    LDX #8
EA  ... NOP      &times; 2
CA      DEX
10 FB    BPL *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 08    LDY #8
EA  ... NOP      &times; 2
88      DEY
10 FB    BPL *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #48
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 0B    LDY #11
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0B    LDY #11
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|31 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|32 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|34 bytes
|-
|<pre>26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|45 bytes
|-
|<pre>18  ... CLC      &times; 43
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 43
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 43
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 43
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|46 bytes
|-
|<pre>EA  ... NOP      &times; 43
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 90 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #63
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68      PLA
A2 11    LDX #17
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 10    LDY #16
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 11    LDX #17
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 10    LDY #16
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #56
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #56
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, V, and D; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A2 0F    LDX #15
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 0F    LDA #15
E9 01    SBC #1
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #49
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
85 xx    STA @zptemp
30 FB    BMI *-3
A8      TAY
68      PLA</pre>||Clobbers Z&N; requires @zptemp; and writes in stack
|-
|<pre>48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
04 04    NOP $04
30 FB    BMI *-3
A8      TAY
68      PLA</pre>||Clobbers Z&N; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
98      TYA
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
A5 A5    LDA $A5
98      TYA
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 0F    LDX #15
CA      DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48      PHA
08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Clobbers S; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
E6 xx    INC @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
|<pre>04 04    NOP $04
08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Requires support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A8      TAY
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|13 bytes
|-
|<pre>08      PHP
48      PHA
A5 A5    LDA $A5
98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|30 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|45 bytes
|-
|<pre>EA  ... NOP      &times; 45</pre>||No requirements
|-
|}
 
 
=== 91 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 11    LDX #17
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 12    LDY #18
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #64
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
EA  ... NOP      &times; 2
30 FA    BMI *-4</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>48      PHA
A9      LDA #57
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #57
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
48  ... PHA      &times; 2
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 3
D0 FA    BNE *-4</pre>||Clobbers A, S, Z&N, and C
|-
|<pre>48      PHA
08      PHP
A2 0F    LDX #15
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>EA      NOP
98      TYA
A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 0F    LDX #15
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
28      PLP</pre>||Clobbers A; requires @rts12; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #50
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>84 xx    STY @zptemp
A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
E6 xx    INC @zptemp
28      PLP
10 F9    BPL *-5
28      PLP</pre>||Clobbers A; requires @zptemp; and writes in stack
|-
|<pre>00 00    BRK 0
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>00 00    BRK 0
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
68      PLA</pre>||Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
28      PLP</pre>||Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
48      PHA
98      TYA
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 08    LDA #8
EA  ... NOP      &times; 2
E9 01    SBC #1
10 F9    BPL *-5
28      PLP</pre>||Clobbers A; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 0D    LDY #13
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|31 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|32 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|33 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|34 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|46 bytes
|-
|<pre>18  ... CLC      &times; 44
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 44
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 44
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 44
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|47 bytes
|-
|<pre>EA  ... NOP      &times; 44
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 92 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #65
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 0D    LDX #13
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0D    LDY #13
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #58
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #58
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68      PLA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, S, Z&N, C, V, and D
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3</pre>||Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 0C    LDX #12
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #51
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 0E    LDA #14
E9 01    SBC #1
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|31 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|46 bytes
|-
|<pre>EA  ... NOP      &times; 46</pre>||No requirements
|-
|}
 
 
=== 93 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #66
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 11    LDA #17
E9 01    SBC #1
10 FB    BPL *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 11    LDX #17
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #59
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #59
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68      PLA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3</pre>||Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA  ... NOP      &times; 2
30 FB    BMI *-3
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9      LDA #52
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers S, Z&N, C, V, and D; and writes in stack
|-
|<pre>48      PHA
08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>C5 C5    CMP $C5
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, V, and D; and writes in stack
|-
|<pre>08      PHP
A5 A5    LDA $A5
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12; and writes in stack
|-
|<pre>00 00    BRK 0
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
38      SEC
A9 0F    LDA #15
E9 01    SBC #1
10 FB    BPL *-3
68      PLA</pre>||Clobbers S, Z&N, C, and V; and writes in stack
|-
|<pre>85 xx    STA @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
48  ... PHA      &times; 2
D0 FB    BNE *-3
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, and C; requires @zptemp; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
B8      CLV
50 00    BVC *+2
D0 FA    BNE *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|32 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|33 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|34 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|47 bytes
|-
|<pre>18  ... CLC      &times; 45
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 45
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 45
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 45
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|48 bytes
|-
|<pre>EA  ... NOP      &times; 45
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 94 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #67
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>48      PHA
A9      LDA #60
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #60
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP      \ &times; 2
28      PLP      /
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>38      SEC
A9 0C    LDA #12
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>68      PLA
98      TYA
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 3
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 3
D0 FA    BNE *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA      NOP
08      PHP
A2 0C    LDX #12
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #53
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|32 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|47 bytes
|-
|<pre>EA  ... NOP      &times; 47</pre>||No requirements
|-
|}
 
 
=== 95 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #68
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>68      PLA
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #61
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #61
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers Z&N, C, V, and D; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
B0 FC    BCS *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A2 11    LDX #17
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 10    LDA #16
E9 01    SBC #1
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #54
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
EA  ... NOP      &times; 2
30 FB    BMI *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48  ... PHA      &times; 2
98      TYA
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
A5 A5    LDA $A5
98      TYA
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 69    LDA #$69 ;hides 'ADC #$18'
18      CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4
68      PLA
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
68      PLA
28      PLP</pre>||Requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
B8      CLV
50 00    BVC *+2
D0 FA    BNE *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|33 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 2
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|34 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|35 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|48 bytes
|-
|<pre>18  ... CLC      &times; 46
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 46
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 46
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 46
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|49 bytes
|-
|<pre>EA  ... NOP      &times; 46
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 96 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 13    LDX #19
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 12    LDY #18
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #69
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #62
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #62
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 0D    LDY #13
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 0A    LDX #10 ;hides 'ASL A'
EA      NOP
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and X; and writes in stack
|-
|<pre>08      PHP
A0 88    LDY #136 ;hides 'DEY'
EA  ... NOP      &times; 2
30 FB    BMI *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 11    LDX #17
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A2 0A    LDX #10
24 24    BIT $24
CA      DEX
10 FB    BPL *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>48      PHA
A9 69    LDA #$69 ;hides 'ADC #$18'
18      CLC ;first loop only
F6 F6    INC $F6,X
90 FA    BCC *-4
68      PLA</pre>||Clobbers Z&N, C, and V; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
A9 69    LDA #$69 ;hides 'ADC #$18'
18      CLC ;first loop only
F6 F6    INC $F6,X
90 FA    BCC *-4
28      PLP</pre>||Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #55
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 0B    LDY #11
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|32 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|48 bytes
|-
|<pre>EA  ... NOP      &times; 48</pre>||No requirements
|-
|}
 
 
=== 97 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #70
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 0C    LDX #12
48      PHA
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>A0 0C    LDY #12
48      PHA
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>A2 08    LDX #8
08      PHP
28      PLP
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, and Z&N; and writes in stack
|-
|<pre>A2 0C    LDX #12
C5 C5    CMP $C5
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, Z&N, and C
|-
|<pre>A2 0C    LDX #12
24 24    BIT $24
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, Z&N, and V
|-
|<pre>A2 0C    LDX #12
A5 A5    LDA $A5
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers A, X, and Z&N
|-
|<pre>A0 07    LDY #7
08      PHP
28      PLP
88      DEY
10 FB    BPL *-3</pre>||Clobbers Y, and Z&N; and writes in stack
|-
|<pre>A0 0C    LDY #12
C5 C5    CMP $C5
88      DEY
D0 FB    BNE *-3</pre>||Clobbers Y, Z&N, and C
|-
|<pre>A0 0C    LDY #12
24 24    BIT $24
88      DEY
D0 FB    BNE *-3</pre>||Clobbers Y, Z&N, and V
|-
|<pre>A0 0C    LDY #12
A5 A5    LDA $A5
88      DEY
D0 FB    BNE *-3</pre>||Clobbers A, Y, and Z&N
|-
|<pre>A2 0C    LDX #12
A4 A4    LDY $A4
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, Y, and Z&N
|-
|<pre>A2 0C    LDX #12
85 xx    STA @zptemp
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>A0 0C    LDY #12
85 xx    STA @zptemp
88      DEY
D0 FB    BNE *-3</pre>||Clobbers Y, and Z&N; and requires @zptemp
|-
|<pre>48      PHA
A9      LDA #63
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #63
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A2 0C    LDX #12
04 04    NOP $04
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, and Z&N; and requires support for unofficial opcodes
|-
|<pre>A0 0C    LDY #12
04 04    NOP $04
88      DEY
D0 FB    BNE *-3</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 11    LDX #17
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #56
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|33 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|34 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|35 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|36 bytes
|-
|<pre>EA  ... NOP      &times; 2
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|49 bytes
|-
|<pre>18  ... CLC      &times; 47
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 47
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 47
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 47
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|50 bytes
|-
|<pre>EA  ... NOP      &times; 47
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 98 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #71
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 13    LDX #19
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 12    LDY #18
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 12    LDA #18
E9 01    SBC #1
10 FB    BPL *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #64
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #64
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>48      PHA
98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
EA  ... NOP      &times; 2
30 FA    BMI *-4
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
EA  ... NOP      &times; 2
30 FA    BMI *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #57
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>84 xx    STY @zptemp
A0 0D    LDY #13
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Requires @rts12; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
84 xx    STY @zptemp
A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
|<pre>00 00    BRK 0
08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 2
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
68      PLA
28      PLP</pre>||Clobbers S; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|13 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 08    LDA #8
EA  ... NOP      &times; 2
E9 01    SBC #1
10 F9    BPL *-5
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|33 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|49 bytes
|-
|<pre>EA  ... NOP      &times; 49</pre>||No requirements
|-
|}
 
 
=== 99 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #72
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 0D    LDX #13
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0D    LDY #13
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack
|-
|<pre>48      PHA
A9      LDA #65
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #65
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
38      SEC
10 FA    BPL *-4</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>38  ... SEC      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A2 0D    LDX #13
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0D    LDY #13
EA      NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #58
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68      PLA</pre>||Clobbers S, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
28      PLP</pre>||Clobbers A, and S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
08      PHP
98      TYA
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 0F    LDY #15
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|34 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|35 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|37 bytes
|-
|<pre>EA  ... NOP      &times; 3
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|50 bytes
|-
|<pre>18  ... CLC      &times; 48
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 48
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 48
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 48
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|51 bytes
|-
|<pre>EA  ... NOP      &times; 48
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 100 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #73
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 0A    LDX #10
68      PLA
CA      DEX
10 FC    BPL *-2</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>A0 0B    LDY #11
68      PLA
88      DEY
D0 FC    BNE *-2</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 13    LDX #19
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 12    LDY #18
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #66
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #66
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 11    LDA #17
E9 01    SBC #1
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 11    LDA #17
E9 01    SBC #1
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #59
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
EA  ... NOP      &times; 2
30 FB    BMI *-3
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48      PHA
08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
A5 A5    LDA $A5
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|34 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|50 bytes
|-
|<pre>EA  ... NOP      &times; 50</pre>||No requirements
|-
|}
 
 
=== 101 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 13    LDX #19
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 14    LDY #20
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #74
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #67
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #67
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
EA      NOP
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
EA      NOP
48      PHA
30 FA    BMI *-4</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>38      SEC
A9 0E    LDA #14
EA      NOP
E9 01    SBC #1
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
18      CLC
10 FA    BPL *-4</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>98      TYA
A0 0C    LDY #12
48      PHA
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>98      TYA
A0 07    LDY #7
08      PHP
28      PLP
88      DEY
10 FB    BPL *-3
A8      TAY</pre>||Clobbers A, and Z&N; and writes in stack
|-
|<pre>98      TYA
A0 0C    LDY #12
C5 C5    CMP $C5
88      DEY
D0 FB    BNE *-3
A8      TAY</pre>||Clobbers A, Z&N, and C
|-
|<pre>98      TYA
A0 0C    LDY #12
24 24    BIT $24
88      DEY
D0 FB    BNE *-3
A8      TAY</pre>||Clobbers A, Z&N, and V
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>98      TYA
A0 0C    LDY #12
85 xx    STA @zptemp
88      DEY
D0 FB    BNE *-3
A8      TAY</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
28      PLP</pre>||Clobbers A; requires @rts12, and @rts14; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #60
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>98      TYA
A0 0C    LDY #12
04 04    NOP $04
88      DEY
D0 FB    BNE *-3
A8      TAY</pre>||Clobbers A, and Z&N; and requires support for unofficial opcodes
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP      \ &times; 2
28      PLP      /
10 F9    BPL *-5
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 0C    LDA #12
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      &times; 3
D0 FA    BNE *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|35 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|36 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|38 bytes
|-
|<pre>26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|51 bytes
|-
|<pre>18  ... CLC      &times; 49
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 49
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 49
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 49
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|52 bytes
|-
|<pre>EA  ... NOP      &times; 49
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 102 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #75
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A2 13    LDX #19
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
A0 12    LDY #18
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9      LDA #68
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #68
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A2 13    LDX #19
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
A2 0A    LDX #10
68      PLA
CA      DEX
10 FC    BPL *-2</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48  ... PHA      &times; 2
A0 12    LDY #18
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
A0 0B    LDY #11
68      PLA
88      DEY
D0 FC    BNE *-2</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
98      TYA
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>A6 A6    LDX $A6
A2 0D    LDX #13
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 0D    LDY #13
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #61
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
B0 FC    BCS *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|34 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|51 bytes
|-
|<pre>EA  ... NOP      &times; 51</pre>||No requirements
|-
|}
 
 
=== 103 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #76
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 13    LDX #19
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>18      CLC
A9 69    LDA #$69 ;hides 'ADC #$08'
08      PHP ;first loop only
90 FC    BCC *-2</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 13    LDX #19
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #69
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #69
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
48  ... PHA      &times; 2
18      CLC
D0 FA    BNE *-4</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 0D    LDY #13
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9      LDA #62
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 0D    LDY #13
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0D    LDY #13
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>84 xx    STY @zptemp
A0 0C    LDY #12
C5 C5    CMP $C5
88      DEY
D0 FB    BNE *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp
|-
|<pre>84 xx    STY @zptemp
A0 0C    LDY #12
24 24    BIT $24
88      DEY
D0 FB    BNE *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N, and V; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 69    LDA #$69 ;hides 'ADC #$18'
18      CLC ;first loop only
F6 F6    INC $F6,X
90 FA    BCC *-4
68      PLA
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>84 xx    STY @zptemp
A0 0C    LDY #12
04 04    NOP $04
88      DEY
D0 FB    BNE *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 0C    LDY #12
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>E6 xx    INC @zptemp
84 xx    STY @zptemp
A0 0D    LDY #13
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|35 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|36 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|37 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|38 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|52 bytes
|-
|<pre>18  ... CLC      &times; 50
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 50
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 50
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 50
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|53 bytes
|-
|<pre>EA  ... NOP      &times; 50
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 104 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #77
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A2 13    LDX #19
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 13    LDX #19
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #70
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #70
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
48      PHA
00 00    BRK 0
10 FA    BPL *-4</pre>||Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
38      SEC
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
00 00    BRK 0
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C; requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
00 00    BRK 0
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 0C    LDX #12
24 24    BIT $24
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0C    LDY #12
24 24    BIT $24
88      DEY
D0 FB    BNE *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #63
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|35 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|52 bytes
|-
|<pre>EA  ... NOP      &times; 52</pre>||No requirements
|-
|}
 
 
=== 105 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #78
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 0D    LDX #13
48      PHA
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>68      PLA
A2 13    LDX #19
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>A0 0D    LDY #13
48      PHA
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>68      PLA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 13    LDX #19
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #71
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #71
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 13    LDX #19
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 12    LDA #18
E9 01    SBC #1
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 12    LDA #18
E9 01    SBC #1
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #64
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3
68      PLA</pre>||Clobbers S, Z&N, and C; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>C5 C5    CMP $C5
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0D    LDY #13
EA      NOP
88      DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48  ... PHA      &times; 2
98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
EA  ... NOP      &times; 2
30 FA    BMI *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|36 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|37 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|38 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|53 bytes
|-
|<pre>18  ... CLC      &times; 51
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 51
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 51
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 51
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|54 bytes
|-
|<pre>EA  ... NOP      &times; 51
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 106 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 14    LDX #20
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 15    LDY #21
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #79
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$08'
08      PHP ;first loop only
EA      NOP
30 FB    BMI *-3</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #72
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #72
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
A2 0D    LDX #13
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0D    LDY #13
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
48  ... PHA      &times; 2
18      CLC
D0 FA    BNE *-4</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
38      SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>8C      TXA
A2 13    LDX #19
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
28      PLP</pre>||Clobbers A; requires @rts12, and @rts15; and writes in stack
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
18      CLC
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #65
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
38      SEC
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
38      SEC
10 FA    BPL *-4
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
38  ... SEC      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
38  ... SEC      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 0D    LDY #13
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
48      PHA
98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 10    LDY #16
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|36 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|53 bytes
|-
|<pre>EA  ... NOP      &times; 53</pre>||No requirements
|-
|}
 
 
=== 107 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #80
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 18    LDX #24 ;hides 'CLC'
CA  ... DEX      &times; 2
D0 FB    BNE *-3</pre>||Clobbers X, and Z&N
|-
|<pre>A0 18    LDY #24 ;hides 'CLC'
88  ... DEY      &times; 2
D0 FB    BNE *-3</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #73
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #73
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68      PLA
18      CLC
A9 69    LDA #$69 ;hides 'ADC #$08'
08      PHP ;first loop only
90 FC    BCC *-2</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 13    LDX #19
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #66
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 11    LDA #17
E9 01    SBC #1
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|37 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 3
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|38 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|39 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|54 bytes
|-
|<pre>18  ... CLC      &times; 52
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 52
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 52
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 52
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|55 bytes
|-
|<pre>EA  ... NOP      &times; 52
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 108 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #81
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 13    LDX #19
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #74
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #74
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #67
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
EA      NOP
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
EA      NOP
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
38      SEC
A9 0E    LDA #14
EA      NOP
E9 01    SBC #1
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 0E    LDA #14
EA      NOP
E9 01    SBC #1
D0 FA    BNE *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
18      CLC
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3
68      PLA</pre>||Clobbers S, Z&N, and C; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
98      TYA
A0 07    LDY #7
08      PHP
28      PLP
88      DEY
10 FB    BPL *-3
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Requires @rts12, and @rts14; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 0C    LDA #12
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 0D    LDX #13
EA      NOP
CA      DEX
10 FC    BPL *-2
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|36 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|54 bytes
|-
|<pre>EA  ... NOP      &times; 54</pre>||No requirements
|-
|}
 
 
=== 109 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #82
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>A2 0C    LDX #12
68      PLA
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48      PHA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>A0 0C    LDY #12
68      PLA
88      DEY
D0 FC    BNE *-2</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #75
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #75
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08      PHP ;first loop only
EA      NOP
30 FB    BMI *-3</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
38      SEC
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack
|-
|<pre>18      CLC
A9 F4    LDA #244 ;hides 'NOP zp,X'
EA      NOP
69 01    ADC #1
D0 F9    BNE *-5</pre>||Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
|-
|<pre>68      PLA
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 13    LDX #19
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #68
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A2 13    LDX #19
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|37 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|38 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|39 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|40 bytes
|-
|<pre>EA  ... NOP      &times; 2
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|55 bytes
|-
|<pre>18  ... CLC      &times; 53
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 53
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 53
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 53
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|56 bytes
|-
|<pre>EA  ... NOP      &times; 53
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 110 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #83
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68      PLA
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #76
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #76
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 13    LDX #19
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #69
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 0D    LDY #13
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 13    LDX #19
CA      DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 0D    LDY #13
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|37 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|55 bytes
|-
|<pre>EA  ... NOP      &times; 55</pre>||No requirements
|-
|}
 
 
=== 111 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A2 15    LDX #21
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 15    LDY #21
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
18      CLC
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>48      PHA
A9      LDA #77
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #77
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 18    LDY #24 ;hides 'CLC'
88  ... DEY      &times; 2
D0 FB    BNE *-3
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
08      PHP
A2 13    LDX #19
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 13    LDX #19
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #70
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
38      SEC
10 F9    BPL *-5
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
38      SEC
10 F9    BPL *-5
28      PLP</pre>||Clobbers A; requires @rts12, and @rts14; and writes in stack
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
00 00    BRK 0
10 F9    BPL *-5
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
00 00    BRK 0
10 F9    BPL *-5
28      PLP</pre>||Clobbers A; requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
00 00    BRK 0
10 F9    BPL *-5
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
00 00    BRK 0
10 F9    BPL *-5
28      PLP</pre>||Clobbers A; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0D    LDY #13
48      PHA
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers S, and Z&N; requires @zptemp; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
EA      NOP
D0 FB    BNE *-3
68      PLA</pre>||Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
EA      NOP
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
08      PHP
28      PLP
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|38 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|39 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|41 bytes
|-
|<pre>EA  ... NOP      &times; 3
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|56 bytes
|-
|<pre>18  ... CLC      &times; 54
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 54
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 54
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 54
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|57 bytes
|-
|<pre>EA  ... NOP      &times; 54
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 112 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #85
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9      LDA #78
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #78
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48  ... PHA      &times; 2
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 0D    LDX #13
24 24    BIT $24
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0D    LDY #13
24 24    BIT $24
88      DEY
D0 FB    BNE *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #71
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 12    LDA #18
E9 01    SBC #1
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|38 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|56 bytes
|-
|<pre>EA  ... NOP      &times; 56</pre>||No requirements
|-
|}
 
 
=== 113 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #86
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A2 0F    LDX #15
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0F    LDY #15
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>08      PHP
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #79
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #79
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
08      PHP
28      PLP
18      CLC
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>48      PHA
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #72
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>84 xx    STY @zptemp
A0 18    LDY #24 ;hides 'CLC'
88  ... DEY      &times; 2
D0 FB    BNE *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48  ... PHA      &times; 2
38      SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA</pre>||Clobbers S, Z&N, C, and V; and writes in stack
|-
|<pre>48      PHA
08      PHP
38      SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>C5 C5    CMP $C5
48      PHA
38      SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A5 A5    LDA $A5
38      SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
18      CLC
10 F9    BPL *-5
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
38      SEC
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
98      TYA
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
38  ... SEC      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|39 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|40 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|42 bytes
|-
|<pre>26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|57 bytes
|-
|<pre>18  ... CLC      &times; 55
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 55
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 55
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 55
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|58 bytes
|-
|<pre>EA  ... NOP      &times; 55
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 114 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #87
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
|<pre>48      PHA
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A6 A6    LDX $A6
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 15    LDY #21
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #80
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #80
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
A2 18    LDX #24 ;hides 'CLC'
CA  ... DEX      &times; 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 18    LDY #24 ;hides 'CLC'
88  ... DEY      &times; 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #73
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
08      PHP
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|38 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|57 bytes
|-
|<pre>EA  ... NOP      &times; 57</pre>||No requirements
|-
|}
 
 
=== 115 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #88
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68      PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
|<pre>68      PLA
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 15    LDY #21
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #81
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #81
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #74
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>00 00    BRK 0
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
A5 A5    LDA $A5
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
EA      NOP
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 0E    LDA #14
EA      NOP
E9 01    SBC #1
D0 FA    BNE *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|39 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|40 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|41 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|42 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|58 bytes
|-
|<pre>18  ... CLC      &times; 56
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 56
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 56
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 56
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|59 bytes
|-
|<pre>EA  ... NOP      &times; 56
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 116 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A2 16    LDX #22
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 17    LDY #23
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #82
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #82
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
08      PHP
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>8C      TXA
A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #75
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>EA  ... NOP      &times; 3
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
38      SEC
10 F9    BPL *-5
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack
|-
|<pre>08      PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
38      SEC
10 F9    BPL *-5
28      PLP</pre>||Clobbers A; requires @rts12, and @rts15; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 F4    LDA #244 ;hides 'NOP zp,X'
EA      NOP
69 01    ADC #1
D0 F9    BNE *-5
68      PLA</pre>||Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 F4    LDA #244 ;hides 'NOP zp,X'
EA      NOP
69 01    ADC #1
D0 F9    BNE *-5
28      PLP</pre>||Clobbers A; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
48      PHA
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0D    LDY #13
24 24    BIT $24
88      DEY
D0 FB    BNE *-3
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|39 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|58 bytes
|-
|<pre>EA  ... NOP      &times; 58</pre>||No requirements
|-
|}
 
 
=== 117 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #90
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A2 0D    LDX #13 ;hides 'ORA abs'
A5 A5    LDA $A5
CA      DEX
D0 FA    BNE *-4</pre>||Clobbers A, X, and Z&N
|-
|<pre>A0 0D    LDY #13 ;hides 'ORA abs'
A5 A5    LDA $A5
88      DEY
D0 FA    BNE *-4</pre>||Clobbers A, Y, and Z&N
|-
|<pre>A2 16    LDX #22
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF
|-
|<pre>F6 F6    INC $F6,X
A0 15    LDY #21
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9      LDA #83
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #83
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A2 0C    LDX #12 ;hides 'NOP abs'
44 00    NOP $0
CA      DEX
10 FA    BPL *-4</pre>||Clobbers X, and Z&N; and requires support for unofficial opcodes
|-
|<pre>A0 0C    LDY #12 ;hides 'NOP abs'
44 00    NOP $0
88      DEY
10 FA    BPL *-4</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
|-
|<pre>EA      NOP
68      PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
|<pre>48  ... PHA      &times; 2
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A0 15    LDY #21
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 0F    LDY #15
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A0 15    LDY #21
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #76
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|40 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|41 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|42 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|59 bytes
|-
|<pre>18  ... CLC      &times; 57
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 57
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 57
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 57
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|60 bytes
|-
|<pre>EA  ... NOP      &times; 57
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 118 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #91
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>EA      NOP
A2 16    LDX #22
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
18      CLC
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #77
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 18    LDY #24 ;hides 'CLC'
88  ... DEY      &times; 2
D0 FB    BNE *-3
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      &times; 3
84 xx    STY @zptemp
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
38      SEC
10 F9    BPL *-5
68      PLA
28      PLP</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
00 00    BRK 0
10 F9    BPL *-5
68      PLA
28      PLP</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
00 00    BRK 0
10 F9    BPL *-5
68      PLA
28      PLP</pre>||Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A      NOP ;first loop only
EA      NOP
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Clobbers S; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|13 bytes
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
48      PHA
98      TYA
A0 12    LDY #18
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|40 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|59 bytes
|-
|<pre>EA  ... NOP      &times; 59</pre>||No requirements
|-
|}
 
 
=== 119 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #92
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A0 88    LDY #136 ;hides 'DEY'
08      PHP
28      PLP
30 FB    BMI *-3</pre>||Clobbers Y, and Z&N; and writes in stack
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
|<pre>48      PHA
A2 16    LDX #22
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A6 A6    LDX $A6
A2 16    LDX #22
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #85
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #85
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
48      PHA
08      PHP
28      PLP
D0 FA    BNE *-4</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
C5 C5    CMP $C5
28      PLP
D0 F9    BNE *-5</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #78
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
08      PHP
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A2 14    LDX #20
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0F    LDY #15
EA      NOP
88      DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|41 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 4
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|42 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|43 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|60 bytes
|-
|<pre>18  ... CLC      &times; 58
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 58
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 58
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 58
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|61 bytes
|-
|<pre>EA  ... NOP      &times; 58
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 120 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #93
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 11    LDX #17
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
|<pre>68      PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
A9      LDA #86
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #86
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 0F    LDX #15
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0F    LDY #15
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9      LDA #79
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
08      PHP
28      PLP
18      CLC
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
A5 A5    LDA $A5
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
84 xx    STY @zptemp
A0 18    LDY #24 ;hides 'CLC'
88  ... DEY      &times; 2
D0 FB    BNE *-3
A4 xx    LDY @zptemp
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
38      SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|13 bytes
|-
|<pre>08      PHP
48      PHA
A5 A5    LDA $A5
38      SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|40 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|60 bytes
|-
|<pre>EA  ... NOP      &times; 60</pre>||No requirements
|-
|}
 
 
=== 121 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 17    LDX #23
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 18    LDY #24
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #94
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
08      PHP
28      PLP
30 FA    BMI *-4</pre>||Clobbers A, Z&N, C, and V; and writes in stack
|-
|<pre>E6 xx    INC @zptemp
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, Z&N, C, and V; and requires @zptemp
|-
|<pre>48      PHA
A9      LDA #87
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #87
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
90 FA    BCC *-4</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack
|-
|<pre>18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA      NOP
00 00    BRK 0
90 FA    BCC *-4</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>C5 C5    CMP $C5
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>8C      TXA
A2 16    LDX #22
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #80
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>98      TYA
A0 0C    LDY #12 ;hides 'NOP abs'
44 00    NOP $0
88      DEY
10 FA    BPL *-4
A8      TAY</pre>||Clobbers A, and Z&N; and requires support for unofficial opcodes
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>EA  ... NOP      &times; 3
98      TYA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48  ... PHA      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
28      PLP
18      CLC
D0 FA    BNE *-4
68      PLA</pre>||Clobbers S, Z&N, and C; and writes in stack
|-
|<pre>85 xx    STA @zptemp
68      PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, C, and V; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
48      PHA
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 14    LDY #20
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|41 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|42 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|43 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|44 bytes
|-
|<pre>EA  ... NOP      &times; 2
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|61 bytes
|-
|<pre>18  ... CLC      &times; 59
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 59
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 59
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 59
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|62 bytes
|-
|<pre>EA  ... NOP      &times; 59
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 122 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #95
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
EA      NOP
B0 FB    BCS *-3</pre>||Clobbers A, Z&N, C, V, and D
|-
|<pre>EA      NOP
A2 11    LDX #17
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
|<pre>F6 F6    INC $F6,X
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9      LDA #88
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #88
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #81
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|41 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|61 bytes
|-
|<pre>EA  ... NOP      &times; 61</pre>||No requirements
|-
|}
 
 
=== 123 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #96
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 17    LDX #23
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>38      SEC
A9 18    LDA #24
E9 01    SBC #1
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 16    LDX #22
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #82
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
8C      TXA
A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX
68      PLA</pre>||Clobbers Z&N; requires @zptemp; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>84 xx    STY @zptemp
A0 0C    LDY #12 ;hides 'NOP abs'
44 00    NOP $0
88      DEY
10 FA    BPL *-4
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
|<pre>85 xx    STA @zptemp
EA      NOP
68      PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, C, and V; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      &times; 3
48      PHA
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
84 xx    STY @zptemp
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
38      SEC
10 F9    BPL *-5
68      PLA
28      PLP</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 F4    LDA #244 ;hides 'NOP zp,X'
EA      NOP
69 01    ADC #1
D0 F9    BNE *-5
68      PLA
28      PLP</pre>||Requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|13 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 0D    LDY #13
C5 C5    CMP $C5
88      DEY
D0 FB    BNE *-3
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|42 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|43 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|45 bytes
|-
|<pre>EA  ... NOP      &times; 3
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|62 bytes
|-
|<pre>18  ... CLC      &times; 60
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 60
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 60
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 60
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|63 bytes
|-
|<pre>EA  ... NOP      &times; 60
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 124 cycles ===
{| class="wikitable testtable"
!colspan="2"|4 bytes
|-
|<pre>A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1</pre>||Clobbers X, and Z&N
|-
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #97
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A4 A4    LDY $A4
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #90
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #90
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00    BRK 0
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack
|-
|<pre>68  ... PLA      &times; 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A2 0D    LDX #13 ;hides 'ORA abs'
A5 A5    LDA $A5
CA      DEX
D0 FA    BNE *-4
28      PLP</pre>||Clobbers A, and X; and writes in stack
|-
|<pre>08      PHP
A0 0D    LDY #13 ;hides 'ORA abs'
A5 A5    LDA $A5
88      DEY
D0 FA    BNE *-4
28      PLP</pre>||Clobbers A, and Y; and writes in stack
|-
|<pre>08      PHP
A2 16    LDX #22
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #83
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A2 0C    LDX #12 ;hides 'NOP abs'
44 00    NOP $0
CA      DEX
10 FA    BPL *-4
28      PLP</pre>||Clobbers X; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
A0 0C    LDY #12 ;hides 'NOP abs'
44 00    NOP $0
88      DEY
10 FA    BPL *-4
28      PLP</pre>||Clobbers Y; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 0F    LDY #15
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0F    LDY #15
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|42 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|62 bytes
|-
|<pre>EA  ... NOP      &times; 62</pre>||No requirements
|-
|}
 
 
=== 125 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #98
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 1A    LDX #26 ;hides 'NOP'
CA  ... DEX      &times; 2
10 FB    BPL *-3</pre>||Clobbers X, and Z&N; and requires support for unofficial opcodes
|-
|<pre>A0 1A    LDY #26 ;hides 'NOP'
88  ... DEY      &times; 2
10 FB    BPL *-3</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
|-
|<pre>68      PLA
A2 17    LDX #23
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 17    LDX #23
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #91
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #91
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A2 16    LDX #22
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 16    LDX #22
CA      DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|43 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|44 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|46 bytes
|-
|<pre>26 26    ROL $26  \ &times; 2
66 26    ROR $26  /
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|63 bytes
|-
|<pre>18  ... CLC      &times; 61
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 61
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 61
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 61
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|64 bytes
|-
|<pre>EA  ... NOP      &times; 61
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 126 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 18    LDX #24
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 18    LDY #24
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #99
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #92
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #92
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
A0 88    LDY #136 ;hides 'DEY'
08      PHP
28      PLP
30 FB    BMI *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>20 xx xx JSR @rts15
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; requires @rts12, and @rts15; and writes in stack
|-
|<pre>EA      NOP
00 00    BRK 0
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
|<pre>EA      NOP
68  ... PLA      &times; 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
|<pre>48      PHA
08      PHP
A2 16    LDX #22
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>C5 C5    CMP $C5
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
98      TYA
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 16    LDX #22
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #85
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
C5 C5    CMP $C5
28      PLP
D0 F9    BNE *-5
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
48      PHA
98      TYA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 15    LDY #21
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|42 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|63 bytes
|-
|<pre>EA  ... NOP      &times; 63</pre>||No requirements
|-
|}
 
 
=== 127 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #100
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 11    LDX #17
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 12    LDY #18
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #93
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #93
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
00 00    BRK 0
B0 FA    BCS *-4</pre>||Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 11    LDX #17
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #86
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|43 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|44 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|45 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|46 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|64 bytes
|-
|<pre>18  ... CLC      &times; 62
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 62
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 62
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 62
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|65 bytes
|-
|<pre>EA  ... NOP      &times; 62
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 128 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #101
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68      PLA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1</pre>||Clobbers A, X, S, and Z&N
|-
!colspan="2"|6 bytes
|-
|<pre>8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX</pre>||Clobbers A, and Z&N
|-
|<pre>EA      NOP
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 18    LDY #24
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>08      PHP
A2 17    LDX #23
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #94
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #94
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
08      PHP
28      PLP
30 FA    BMI *-4
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
08      PHP
28      PLP
30 FA    BMI *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #87
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
90 FA    BCC *-4
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA      NOP
00 00    BRK 0
90 FA    BCC *-4
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|43 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|64 bytes
|-
|<pre>EA  ... NOP      &times; 64</pre>||No requirements
|-
|}
 
 
=== 129 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #102
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>E6 xx    INC @zptemp
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>A2 0F    LDX #15
48      PHA
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>A0 0F    LDY #15
48      PHA
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 18    LDY #24
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #95
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #95
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00    BRK 0
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>38      SEC
A9 11    LDA #17
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>98      TYA
A0 1A    LDY #26 ;hides 'NOP'
88  ... DEY      &times; 2
10 FB    BPL *-3
A8      TAY</pre>||Clobbers A, and Z&N; and requires support for unofficial opcodes
|-
|<pre>68      PLA
98      TYA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
EA      NOP
B0 FB    BCS *-3
68      PLA</pre>||Clobbers Z&N, C, V, and D; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
EA      NOP
B0 FB    BCS *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA      NOP
08      PHP
A2 11    LDX #17
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #88
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|44 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|45 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|46 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|65 bytes
|-
|<pre>18  ... CLC      &times; 63
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 63
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 63
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 63
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|66 bytes
|-
|<pre>EA  ... NOP      &times; 63
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 130 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #103
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>48  ... PHA      &times; 2
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>68      PLA
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 18    LDY #24
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #96
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #96
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 17    LDX #23
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|44 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|65 bytes
|-
|<pre>EA  ... NOP      &times; 65</pre>||No requirements
|-
|}
 
 
=== 131 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 1A    LDX #26
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #104
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>08      PHP
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #97
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #97
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 12    LDY #18
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
08      PHP
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #90
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00    BRK 0
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires dummy interrupt handler; and writes in stack
|-
|<pre>00 00    BRK 0
08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 1A    LDY #26 ;hides 'NOP'
88  ... DEY      &times; 2
10 FB    BPL *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
F6 F6    INC $F6,X
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 0F    LDY #15
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|45 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 5
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|46 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|47 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|66 bytes
|-
|<pre>18  ... CLC      &times; 64
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 64
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 64
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 64
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|67 bytes
|-
|<pre>EA  ... NOP      &times; 64
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 132 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #105
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
03 xx    SLO (@ptrtemp,X)</pre>||Clobbers A, X, Z&N, and C; and requires @ptrtemp, and support for unofficial opcodes
|-
|<pre>68  ... PLA      &times; 2
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1</pre>||Clobbers A, X, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>BA      TSX
68      PLA
9A      TXS
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1</pre>||Clobbers A, X, and Z&N; and unsafe for interrupts
|-
|<pre>A2 19    LDX #25
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
A0 18    LDY #24
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9      LDA #98
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #98
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68      PLA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX</pre>||Clobbers A, S, and Z&N
|-
|<pre>AA      TAX
68      PLA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1</pre>||Clobbers X, S, and Z&N
|-
|<pre>48  ... PHA      &times; 2
A0 18    LDY #24
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A0 18    LDY #24
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>08      PHP
A2 1A    LDX #26 ;hides 'NOP'
CA  ... DEX      &times; 2
10 FB    BPL *-3
28      PLP</pre>||Clobbers X; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
A0 1A    LDY #26 ;hides 'NOP'
88  ... DEY      &times; 2
10 FB    BPL *-3
28      PLP</pre>||Clobbers Y; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 17    LDX #23
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #91
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|44 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|66 bytes
|-
|<pre>EA  ... NOP      &times; 66</pre>||No requirements
|-
|}
 
 
=== 133 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #106
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 1A    LDX #26
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 19    LDA #25
E9 01    SBC #1
10 FB    BPL *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #99
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #99
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>E6 xx    INC @zptemp
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>98      TYA
A0 0F    LDY #15
48      PHA
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #92
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
A6 xx    LDX @zptemp</pre>||Clobbers S, and Z&N; requires @zptemp; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>84 xx    STY @zptemp
A0 12    LDY #18
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>20 xx xx JSR @rts15
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires @rts12, and @rts15; and writes in stack
|-
|<pre>20 xx xx JSR @rts15
08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; requires @rts12, and @rts15; and writes in stack
|-
|<pre>EA      NOP
00 00    BRK 0
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
00 00    BRK 0
08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|45 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|46 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|47 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|48 bytes
|-
|<pre>EA  ... NOP      &times; 2
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|67 bytes
|-
|<pre>18  ... CLC      &times; 65
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 65
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 65
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 65
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|68 bytes
|-
|<pre>EA  ... NOP      &times; 65
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 134 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #107
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 13    LDX #19
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 12    LDY #18
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #100
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #100
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
A2 11    LDX #17
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 12    LDY #18
EA      NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
20 xx xx JSR @rts14
B0 F9    BCS *-5</pre>||Clobbers A, Z&N, C, and V; requires @rts12, and @rts14; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #93
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
00 00    BRK 0
B0 FA    BCS *-4
68      PLA</pre>||Clobbers Z&N, C, and V; requires dummy interrupt handler; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
00 00    BRK 0
B0 FA    BCS *-4
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
08      PHP
98      TYA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 17    LDY #23
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|45 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|67 bytes
|-
|<pre>EA  ... NOP      &times; 67</pre>||No requirements
|-
|}
 
 
=== 135 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #108
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68      PLA
A2 1A    LDX #26
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 1A    LDX #26
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #101
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #101
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9      LDA #94
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>E6 xx    INC @zptemp
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
08      PHP
28      PLP
30 FA    BMI *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|46 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|47 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|49 bytes
|-
|<pre>EA  ... NOP      &times; 3
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
26 26... ROL $26  &times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|68 bytes
|-
|<pre>18  ... CLC      &times; 66
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 66
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 66
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 66
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|69 bytes
|-
|<pre>EA  ... NOP      &times; 66
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 136 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #109
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #102
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #102
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$08'
08      PHP ;first loop only
EA  ... NOP      &times; 2
30 FA    BMI *-4</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>38      SEC
A9 12    LDA #18
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
E6 xx    INC @zptemp
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>68  ... PLA      &times; 2
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX</pre>||Clobbers A, S, and Z&N
|-
|<pre>48      PHA
08      PHP
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A2 0F    LDX #15
24 24    BIT $24
CA      DEX
10 FB    BPL *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0F    LDY #15
24 24    BIT $24
88      DEY
10 FB    BPL *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>8C      TXA
A2 19    LDX #25
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #95
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00    BRK 0
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires dummy interrupt handler; and writes in stack
|-
|<pre>00 00    BRK 0
08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
38      SEC
A9 11    LDA #17
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 11    LDA #17
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>F6 F6    INC $F6,X
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
98      TYA
A0 1A    LDY #26 ;hides 'NOP'
88  ... DEY      &times; 2
10 FB    BPL *-3
A8      TAY
68      PLA</pre>||Clobbers Z&N; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
A6 xx    LDX @zptemp</pre>||Clobbers S, and Z&N; requires @zptemp; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
EA      NOP
B0 FB    BCS *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|46 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|68 bytes
|-
|<pre>EA  ... NOP      &times; 68</pre>||No requirements
|-
|}
 
 
=== 137 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #110
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>00 00    BRK 0
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1</pre>||Clobbers X, and Z&N; requires dummy interrupt handler; and writes in stack
|-
|<pre>A2 11    LDX #17
48      PHA
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>A0 10    LDY #16
48      PHA
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A2 11    LDX #17
C5 C5    CMP $C5
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, Z&N, and C
|-
|<pre>A2 11    LDX #17
24 24    BIT $24
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, Z&N, and V
|-
|<pre>A2 11    LDX #17
A5 A5    LDA $A5
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers A, X, and Z&N
|-
|<pre>A0 10    LDY #16
C5 C5    CMP $C5
88      DEY
10 FB    BPL *-3</pre>||Clobbers Y, Z&N, and C
|-
|<pre>A0 10    LDY #16
24 24    BIT $24
88      DEY
10 FB    BPL *-3</pre>||Clobbers Y, Z&N, and V
|-
|<pre>A0 10    LDY #16
A5 A5    LDA $A5
88      DEY
10 FB    BPL *-3</pre>||Clobbers A, Y, and Z&N
|-
|<pre>A2 11    LDX #17
A4 A4    LDY $A4
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, Y, and Z&N
|-
|<pre>A2 11    LDX #17
85 xx    STA @zptemp
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>A0 10    LDY #16
85 xx    STA @zptemp
88      DEY
10 FB    BPL *-3</pre>||Clobbers Y, and Z&N; and requires @zptemp
|-
|<pre>48      PHA
A9      LDA #103
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #103
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A2 11    LDX #17
04 04    NOP $04
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, and Z&N; and requires support for unofficial opcodes
|-
|<pre>A0 10    LDY #16
04 04    NOP $04
88      DEY
10 FB    BPL *-3</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>A6 A6    LDX $A6
A2 13    LDX #19
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 12    LDY #18
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
|<pre>08      PHP
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #96
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
A6 xx    LDX @zptemp
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 18    LDA #24
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|47 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|48 bytes
|-
|<pre>EA      NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|69 bytes
|-
|<pre>18  ... CLC      &times; 67
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 67
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 67
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 67
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|70 bytes
|-
|<pre>EA  ... NOP      &times; 67
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 138 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #111
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 1A    LDA #26
E9 01    SBC #1
10 FB    BPL *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 1A    LDX #26
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #104
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #104
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 12    LDY #18
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9      LDA #97
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
|<pre>48      PHA
08      PHP
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 12    LDY #18
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 12    LDY #18
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>00 00    BRK 0
08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>86 xx    STX @zptemp
AA      TAX
68      PLA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
A6 xx    LDX @zptemp</pre>||Clobbers S, and Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>E6 xx    INC @zptemp
84 xx    STY @zptemp
A0 12    LDY #18
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|46 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|69 bytes
|-
|<pre>EA  ... NOP      &times; 69</pre>||No requirements
|-
|}
 
 
=== 139 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #112
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #105
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #105
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
48      PHA
B0 FB    BCS *-3</pre>||Clobbers A, S, Z&N, C, V, and D; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
85 xx    STA @zptemp
B0 FA    BCS *-4</pre>||Clobbers A, Z&N, C, V, and D; and requires @zptemp
|-
|<pre>38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
04 04    NOP $04
B0 FA    BCS *-4</pre>||Clobbers A, Z&N, C, V, and D; and requires support for unofficial opcodes
|-
|<pre>08      PHP
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
03 xx    SLO (@ptrtemp,X)
28      PLP</pre>||Clobbers A, and X; requires @ptrtemp, and support for unofficial opcodes; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
BA      TSX
68      PLA
9A      TXS
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
28      PLP</pre>||Clobbers A, and X; writes in stack; and unsafe for interrupts
|-
|<pre>08      PHP
A2 19    LDX #25
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #98
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
08      PHP
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|47 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|48 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|49 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|70 bytes
|-
|<pre>18  ... CLC      &times; 68
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 68
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 68
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 68
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|71 bytes
|-
|<pre>EA  ... NOP      &times; 68
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 140 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #113
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68      PLA
A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #106
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #106
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 1A    LDX #26
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 19    LDA #25
E9 01    SBC #1
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 19    LDA #25
E9 01    SBC #1
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #99
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>84 xx    STY @zptemp
A0 12    LDY #18
EA      NOP
88      DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48  ... PHA      &times; 2
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
A5 A5    LDA $A5
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>48      PHA
08      PHP
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
A6 xx    LDX @zptemp
28      PLP</pre>||Clobbers S; requires @zptemp; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
84 xx    STY @zptemp
A0 12    LDY #18
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
|<pre>20 xx xx JSR @rts15
08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>EA      NOP
00 00    BRK 0
08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
38      SEC
A9 18    LDA #24
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|13 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|47 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N
|-
!colspan="2"|70 bytes
|-
|<pre>EA  ... NOP      &times; 70</pre>||No requirements
|-
|}
 
 
=== 141 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #114
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #107
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #107
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
EA      NOP
08      PHP
28      PLP
30 F9    BMI *-5</pre>||Clobbers A, Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A2 13    LDX #19
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 12    LDY #18
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>04 04    NOP $04
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
|-
|<pre>00 00    BRK 0
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX</pre>||Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack
|-
|<pre>98      TYA
A0 10    LDY #16
48      PHA
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>98      TYA
A0 10    LDY #16
C5 C5    CMP $C5
88      DEY
10 FB    BPL *-3
A8      TAY</pre>||Clobbers A, Z&N, and C
|-
|<pre>98      TYA
A0 10    LDY #16
24 24    BIT $24
88      DEY
10 FB    BPL *-3
A8      TAY</pre>||Clobbers A, Z&N, and V
|-
|<pre>98      TYA
A0 10    LDY #16
85 xx    STA @zptemp
88      DEY
10 FB    BPL *-3
A8      TAY</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #100
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>98      TYA
A0 10    LDY #16
04 04    NOP $04
88      DEY
10 FB    BPL *-3
A8      TAY</pre>||Clobbers A, and Z&N; and requires support for unofficial opcodes
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 12    LDY #18
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX
68      PLA</pre>||Clobbers Z&N; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX
28      PLP</pre>||Clobbers A; requires @zptemp; and writes in stack
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
20 xx xx JSR @rts14
B0 F9    BCS *-5
68      PLA</pre>||Clobbers Z&N, C, and V; requires @rts12, and @rts14; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
20 xx xx JSR @rts14
B0 F9    BCS *-5
28      PLP</pre>||Clobbers A; requires @rts12, and @rts14; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
48      PHA
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
00 00    BRK 0
B0 FA    BCS *-4
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|48 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|49 bytes
|-
|<pre>4C xx xx JMP *+3
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|71 bytes
|-
|<pre>18  ... CLC      &times; 69
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 69
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 69
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 69
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|72 bytes
|-
|<pre>EA  ... NOP      &times; 69
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 142 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #115
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A2 18    LDX #24 ;hides 'CLC'
EA      NOP
CA  ... DEX      &times; 2
10 FA    BPL *-4</pre>||Clobbers X, and Z&N
|-
|<pre>A0 18    LDY #24 ;hides 'CLC'
EA      NOP
88  ... DEY      &times; 2
10 FA    BPL *-4</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #108
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #108
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68      PLA
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V; and requires support for unofficial opcodes
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 1A    LDX #26
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #101
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|48 bytes
|-
|<pre>26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 11
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|71 bytes
|-
|<pre>EA  ... NOP      &times; 71</pre>||No requirements
|-
|}
 
 
=== 143 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #116
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>EA      NOP
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #109
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #109
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
F6 F6    INC $F6,X
28      PLP
D0 F9    BNE *-5</pre>||Clobbers A, Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>48      PHA
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #102
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
38      SEC
A9 12    LDA #18
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 12    LDA #18
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>00 00    BRK 0
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 10    LDY #16
48      PHA
88      DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp</pre>||Clobbers S, and Z&N; requires @zptemp; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
8C      TXA
A2 19    LDX #25
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX
68      PLA</pre>||Clobbers Z&N; requires @zptemp; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 10    LDY #16
C5 C5    CMP $C5
88      DEY
10 FB    BPL *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp
|-
|<pre>84 xx    STY @zptemp
A0 10    LDY #16
24 24    BIT $24
88      DEY
10 FB    BPL *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N, and V; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>84 xx    STY @zptemp
A0 10    LDY #16
04 04    NOP $04
88      DEY
10 FB    BPL *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
|-
|<pre>00 00    BRK 0
08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 11    LDA #17
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 13    LDX #19
EA      NOP
CA      DEX
D0 FC    BNE *-2
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|49 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N, and V
|-
|<pre>FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ &times; 6
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|72 bytes
|-
|<pre>18  ... CLC      &times; 70
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 70
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 70
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 70
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|73 bytes
|-
|<pre>EA  ... NOP      &times; 70
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 144 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #117
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #110
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #110
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>F6 F6    INC $F6,X
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; and requires @zptemp, support for unofficial opcodes, and writable $00-$FF
|-
|<pre>00 00    BRK 0
08      PHP
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
28      PLP</pre>||Clobbers X; requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 11    LDX #17
24 24    BIT $24
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 10    LDY #16
24 24    BIT $24
88      DEY
10 FB    BPL *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #103
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
08      PHP
98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|48 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 12
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|72 bytes
|-
|<pre>EA  ... NOP      &times; 72</pre>||No requirements
|-
|}
 
 
=== 145 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #118
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 11    LDX #17
48      PHA
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>A2 0F    LDX #15
68      PLA
CA      DEX
10 FC    BPL *-2</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>A0 12    LDY #18
48      PHA
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>A0 0F    LDY #15
68      PLA
88      DEY
10 FC    BPL *-2</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #111
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #111
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 1A    LDA #26
E9 01    SBC #1
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 1A    LDA #26
E9 01    SBC #1
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #104
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 12    LDY #18
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48      PHA
08      PHP
48      PHA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 12    LDY #18
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|49 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ &times; 7
76 36    ROR $36,X /
36 36... ROL $36,X&times; 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|73 bytes
|-
|<pre>18  ... CLC      &times; 71
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 71
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 71
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 71
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|74 bytes
|-
|<pre>EA  ... NOP      &times; 71
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 146 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #119
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #112
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #112
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>04 04    NOP $04
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
|-
|<pre>A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
38      SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>98      TYA
A0 18    LDY #24 ;hides 'CLC'
EA      NOP
88  ... DEY      &times; 2
10 FA    BPL *-4
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #105
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
85 xx    STA @zptemp
B0 FA    BCS *-4
68      PLA</pre>||Clobbers Z&N, C, V, and D; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
85 xx    STA @zptemp
B0 FA    BCS *-4
28      PLP</pre>||Clobbers A; requires @zptemp; and writes in stack
|-
|<pre>48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
04 04    NOP $04
B0 FA    BCS *-4
68      PLA</pre>||Clobbers Z&N, C, V, and D; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
04 04    NOP $04
B0 FA    BCS *-4
28      PLP</pre>||Clobbers A; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
48      PHA
98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 10    LDA #16
24 24    BIT $24
E9 01    SBC #1
10 F9    BPL *-5
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|49 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ &times; 12
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|73 bytes
|-
|<pre>EA  ... NOP      &times; 73</pre>||No requirements
|-
|}
 
 
=== 147 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #120
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9      LDA #113
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #113
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
A2 0F    LDX #15
68      PLA
CA      DEX
10 FC    BPL *-2</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48  ... PHA      &times; 2
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
A0 0F    LDY #15
68      PLA
88      DEY
10 FC    BPL *-2</pre>||Clobbers A, Y, S, and Z&N
|-
|<pre>68      PLA
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V; and requires support for unofficial opcodes
|-
|<pre>68      PLA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3</pre>||Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #106
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 19    LDA #25
E9 01    SBC #1
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|74 bytes
|-
|<pre>18  ... CLC      &times; 72
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 72
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 72
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 72
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|75 bytes
|-
|<pre>EA  ... NOP      &times; 72
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 148 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #121
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A2 14    LDX #20
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 15    LDY #21
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
|<pre>18      CLC
A9 E9    LDA #$E9 ;hides 'SBC #$9A'
9A      TXS ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 1D    LDA #29
E9 01    SBC #1
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #114
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #114
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>E6 xx    INC @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #107
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
08      PHP
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
EA      NOP
08      PHP
28      PLP
30 F9    BMI *-5
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
EA      NOP
08      PHP
28      PLP
30 F9    BMI *-5
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>00 00    BRK 0
48      PHA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX
68      PLA</pre>||Clobbers Z&N; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
98      TYA
A0 10    LDY #16
C5 C5    CMP $C5
88      DEY
10 FB    BPL *-3
A8      TAY
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>48      PHA
98      TYA
A0 10    LDY #16
24 24    BIT $24
88      DEY
10 FB    BPL *-3
A8      TAY
68      PLA</pre>||Clobbers Z&N, and V; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 18    LDY #24 ;hides 'CLC'
EA      NOP
88  ... DEY      &times; 2
10 FA    BPL *-4
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48      PHA
98      TYA
A0 10    LDY #16
04 04    NOP $04
88      DEY
10 FB    BPL *-3
A8      TAY
68      PLA</pre>||Clobbers Z&N; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>48      PHA
A5 A5    LDA $A5
98      TYA
A0 12    LDY #18
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
48      PHA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX
68      PLA
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
20 xx xx JSR @rts14
B0 F9    BCS *-5
68      PLA
28      PLP</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
48      PHA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
30 FD    BMI *-1
AA      TAX
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|13 bytes
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
48      PHA
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|74 bytes
|-
|<pre>EA  ... NOP      &times; 74</pre>||No requirements
|-
|}
 
 
=== 149 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #122
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #115
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #115
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>F6 F6    INC $F6,X
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; and requires @zptemp, support for unofficial opcodes, and writable $00-$FF
|-
|<pre>F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 18    LDX #24 ;hides 'CLC'
EA      NOP
CA  ... DEX      &times; 2
10 FA    BPL *-4
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 18    LDY #24 ;hides 'CLC'
EA      NOP
88  ... DEY      &times; 2
10 FA    BPL *-4
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #108
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
08      PHP
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
84 xx    STY @zptemp
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|75 bytes
|-
|<pre>18  ... CLC      &times; 73
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 73
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 73
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 73
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|76 bytes
|-
|<pre>EA  ... NOP      &times; 73
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 150 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #123
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68      PLA
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 2
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #116
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #116
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #109
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP
F6 F6    INC $F6,X
28      PLP
D0 F9    BNE *-5
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
A5 A5    LDA $A5
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 12    LDA #18
EA      NOP
E9 01    SBC #1
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|60 bytes
|-
|<pre>26 26    ROL $26  \ &times; 15
66 26    ROR $26  /</pre>||Clobbers Z&N
|-
!colspan="2"|75 bytes
|-
|<pre>EA  ... NOP      &times; 75</pre>||No requirements
|-
|}
 
 
=== 151 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 1D    LDX #29
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 1E    LDY #30
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #124
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
20 xx xx JSR @rts14
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>48      PHA
A9      LDA #117
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #117
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 E9    LDA #$E9 ;hides 'SBC #$9A'
9A      TXS ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP      \ &times; 2
28      PLP      /
D0 F9    BNE *-5</pre>||Clobbers A, Z&N, and C; and writes in stack
|-
|<pre>A5 A5    LDA $A5
18      CLC
A9 E9    LDA #$E9 ;hides 'SBC #$9A'
9A      TXS ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
|<pre>48      PHA
08      PHP
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
38      SEC
A9 1D    LDA #29
E9 01    SBC #1
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>8C      TXA
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #110
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>EA  ... NOP      &times; 3
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>F6 F6    INC $F6,X
48      PHA
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires @zptemp, support for unofficial opcodes, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; requires @zptemp, support for unofficial opcodes, and writable $00-$FF; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 12    LDY #18
48      PHA
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers S, and Z&N; requires @zptemp; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
48      PHA
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|76 bytes
|-
|<pre>18  ... CLC      &times; 74
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 74
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 74
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 74
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|77 bytes
|-
|<pre>EA  ... NOP      &times; 74
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 152 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #125
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9      LDA #118
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #118
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68      PLA
18      CLC
A9 E9    LDA #$E9 ;hides 'SBC #$9A'
9A      TXS ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
|<pre>48  ... PHA      &times; 2
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48  ... PHA      &times; 2
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 15    LDY #21
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      &times; 3
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #111
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 1A    LDA #26
E9 01    SBC #1
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|76 bytes
|-
|<pre>EA  ... NOP      &times; 76</pre>||No requirements
|-
|}
 
 
=== 153 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 EA    LDX #234 ;hides 'NOP'
E8      INX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 EA    LDY #234 ;hides 'NOP'
C8      INY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
|<pre>A9      LDA #126
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>18      CLC
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08      PHP ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 1E    LDA #30
E9 01    SBC #1
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #119
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #119
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>48      PHA
98      TYA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9      LDA #112
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
08      PHP
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68      PLA</pre>||Clobbers S, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>04 04    NOP $04
48      PHA
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>04 04    NOP $04
08      PHP
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; requires support for unofficial opcodes; and writes in stack
|-
|<pre>C5 C5    CMP $C5
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>08      PHP
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
38      SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA</pre>||Clobbers S, Z&N, C, and V; and writes in stack
|-
|<pre>48      PHA
08      PHP
38      SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
98      TYA
A0 18    LDY #24 ;hides 'CLC'
EA      NOP
88  ... DEY      &times; 2
10 FA    BPL *-4
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 18    LDY #24 ;hides 'CLC'
EA      NOP
88  ... DEY      &times; 2
10 FA    BPL *-4
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>85 xx    STA @zptemp
68      PLA
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, C, and V; and requires @zptemp, and support for unofficial opcodes
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
85 xx    STA @zptemp
B0 FA    BCS *-4
68      PLA
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
84 xx    STY @zptemp
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8      SED ;first loop only
04 04    NOP $04
B0 FA    BCS *-4
68      PLA
28      PLP</pre>||Requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|13 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 10    LDA #16
24 24    BIT $24
E9 01    SBC #1
10 F9    BPL *-5
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|77 bytes
|-
|<pre>18  ... CLC      &times; 75
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 75
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 75
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 75
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|78 bytes
|-
|<pre>EA  ... NOP      &times; 75
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 154 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #127
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A2 1D    LDX #29
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>A2 11    LDX #17
68      PLA
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48      PHA
A0 1E    LDY #30
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>A0 10    LDY #16
68      PLA
88      DEY
10 FC    BPL *-2</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 1D    LDX #29
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 1E    LDY #30
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #120
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #120
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
00 00... BRK 0    &times; 2
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      &times; 2
98      TYA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #113
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>EA      NOP
48      PHA
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA      NOP
08      PHP
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 15    LDY #21
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|77 bytes
|-
|<pre>EA  ... NOP      &times; 77</pre>||No requirements
|-
|}
 
 
=== 155 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #128
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
EA      NOP
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A2 15    LDX #21
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 15    LDY #21
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 1E    LDY #30
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
A9      LDA #121
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #121
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
A2 14    LDX #20
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 15    LDY #21
EA      NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 1D    LDA #29
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 1D    LDA #29
E9 01    SBC #1
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #114
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>E6 xx    INC @zptemp
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
A5 A5    LDA $A5
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48      PHA
08      PHP
48      PHA
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Clobbers S; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
EA      NOP
08      PHP
28      PLP
30 F9    BMI *-5
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|78 bytes
|-
|<pre>18  ... CLC      &times; 76
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 76
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 76
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 76
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|79 bytes
|-
|<pre>EA  ... NOP      &times; 76
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 156 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 69    LDA #$69 ;hides 'ADC #$38'
38      SEC ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A2 1E    LDX #30
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 1E    LDY #30
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9      LDA #122
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #122
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>8C      TXA
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #115
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>EA  ... NOP      &times; 3
98      TYA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>F6 F6    INC $F6,X
48      PHA
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers Z&N, C, and V; requires @zptemp, support for unofficial opcodes, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; requires @zptemp, support for unofficial opcodes, and writable $00-$FF; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      &times; 3
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68      PLA</pre>||Clobbers S, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      &times; 2
48      PHA
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
84 xx    STY @zptemp
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|52 bytes
|-
|<pre>36 36    ROL $36,X \ &times; 13
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|78 bytes
|-
|<pre>EA  ... NOP      &times; 78</pre>||No requirements
|-
|}
 
 
=== 157 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #130
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68      PLA
A2 EA    LDX #234 ;hides 'NOP'
E8      INX
D0 FC    BNE *-2</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 EA    LDY #234 ;hides 'NOP'
C8      INY
D0 FC    BNE *-2</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 EA    LDY #234 ;hides 'NOP'
C8      INY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA      NOP
A2 15    LDX #21
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 15    LDY #21
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #123
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #123
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 1E    LDY #30
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9      LDA #116
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|79 bytes
|-
|<pre>18  ... CLC      &times; 77
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 77
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 77
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 77
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|80 bytes
|-
|<pre>EA  ... NOP      &times; 77
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 158 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #131
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>18      CLC
A9 69    LDA #$69 ;hides 'ADC #$38'
38      SEC ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>EA      NOP
A2 1E    LDX #30
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 1E    LDY #30
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>08      PHP
A2 1D    LDX #29
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 1E    LDY #30
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9      LDA #124
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #124
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
98      TYA
A0 1E    LDY #30
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 1E    LDY #30
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
20 xx xx JSR @rts14
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
20 xx xx JSR @rts14
D0 FA    BNE *-4
28      PLP</pre>||Clobbers A; requires @rts12, and @rts14; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #117
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP      \ &times; 2
28      PLP      /
D0 F9    BNE *-5
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>08      PHP
A9 4A    LDA #$4A ;hides 'LSR A'
08      PHP      \ &times; 2
28      PLP      /
D0 F9    BNE *-5
28      PLP</pre>||Clobbers A; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
8C      TXA
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX
68      PLA</pre>||Clobbers Z&N; requires @zptemp; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48  ... PHA      &times; 3
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
|<pre>85 xx    STA @zptemp
68      PLA
18      CLC
A9 E9    LDA #$E9 ;hides 'SBC #$9A'
9A      TXS ;first loop only
D0 FC    BNE *-2
A5 xx    LDA @zptemp</pre>||Clobbers S, Z&N, C, and V; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      &times; 3
48      PHA
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
84 xx    STY @zptemp
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
F6 F6    INC $F6,X
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Requires @zptemp, support for unofficial opcodes, and writable $00-$FF; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
48      PHA
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Clobbers S; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|13 bytes
|-
|<pre>EA  ... NOP      &times; 2
08      PHP
48      PHA
98      TYA
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|79 bytes
|-
|<pre>EA  ... NOP      &times; 79</pre>||No requirements
|-
|}
 
 
=== 159 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #132
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>48      PHA
A9 69    LDA #$69 ;hides 'ADC #$38'
38      SEC ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V; and writes in stack
|-
|<pre>48      PHA
A2 1E    LDX #30
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 1E    LDY #30
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A5 A5    LDA $A5
A9 69    LDA #$69 ;hides 'ADC #$38'
38      SEC ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>A6 A6    LDX $A6
A2 1E    LDX #30
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 1E    LDY #30
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
20 xx xx JSR @rts15
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack
|-
|<pre>48      PHA
A9      LDA #125
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #125
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
18      CLC
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 15    LDY #21
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>84 xx    STY @zptemp
A0 EA    LDY #234 ;hides 'NOP'
C8      INY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
F6 F6    INC $F6,X
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #118
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
08      PHP
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 15    LDY #21
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 15    LDY #21
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 3
08      PHP
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|80 bytes
|-
|<pre>18  ... CLC      &times; 78
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      &times; 78
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      &times; 78
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      &times; 78
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|81 bytes
|-
|<pre>EA  ... NOP      &times; 78
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 160 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9      LDA #133
20 xx xx JSR delay_a_25_clocks</pre>||Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|6 bytes
|-
|<pre>68      PLA
A9 69    LDA #$69 ;hides 'ADC #$38'
38      SEC ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
|<pre>68      PLA
A2 1E    LDX #30
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 1E    LDY #30
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 1E    LDY #30
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 EA    LDX #234 ;hides 'NOP'
E8      INX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
A2 1E    LDX #30
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>08      PHP
A0 EA    LDY #234 ;hides 'NOP'
C8      INY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>EA  ... NOP      &times; 2
A0 1E    LDY #30
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9      LDA #126
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9      LDA #126
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
38      SEC
A9 1E    LDA #30
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 1E    LDA #30
E9 01    SBC #1
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9      LDA #119
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
38      SEC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
D0 FA    BNE *-4
68      PLA</pre>||Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>48  ... PHA      &times; 2
98      TYA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
A5 A5    LDA $A5
98      TYA
A0 1D    LDY #29
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 1D    LDX #29
CA      DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48      PHA
08      PHP
48      PHA
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Clobbers S; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>04 04    NOP $04
08      PHP
48      PHA
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
48      PHA
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
38      SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|13 bytes
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 18    LDY #24 ;hides 'CLC'
EA      NOP
88  ... DEY      &times; 2
10 FA    BPL *-4
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|64 bytes
|-
|<pre>26 26    ROL $26  \ &times; 16
66 26    ROR $26  /</pre>||Clobbers Z&N
|-
!colspan="2"|80 bytes
|-
|<pre>EA  ... NOP      &times; 80</pre>||No requirements
|-
|}


It is possible to verify on compile time that no page wrap occurs,
by replacing all branches with these macros:
<pre>.macro branch_check opc, dest
    opc dest
    .assert >* = >(dest), warning, "branch_check: failed, crosses page"
.endmacro
.macro bccnw dest
        branch_check bcc, dest
.endmacro
.macro bcsnw dest
        branch_check bcs, dest
.endmacro
.macro beqnw dest
        branch_check beq, dest
.endmacro
.macro bnenw dest
        branch_check bne, dest
.endmacro
.macro bminw dest
        branch_check bmi, dest
.endmacro
.macro bplnw dest
        branch_check bpl, dest
.endmacro
.macro bvcnw dest
        branch_check bvc, dest
.endmacro
.macro bvsnw dest
        branch_check bvs, dest
.endmacro</pre>


== See also ==
== See also ==


* [[Cycle counting]]
* [[Delay code]] for functions that produce runtime-determined amount of delay
* [[Delay code]] for functions that produce runtime-determined amount of delay
* Bisqwit's 6502 delay_n macro set for ca65: http://bisqwit.iki.fi/src/6502-inline_delay.7z
* Bisqwit’s “vending machine” for producing a ca65-compatible delay_n macro for arbitrary number of cycles, with more fine-grained configurable constraints: http://bisqwit.iki.fi/utils/nesdelay.php The samples on this page are excerpts from files generated by this online tool.

Latest revision as of 18:24, 12 November 2020

Shortest possible CPU code that creates N cycles of delay, depending on constraints.

Code

All code samples are written for CA65.

Assumptions:

  • No page wrap occurs during any branch instruction. If a page wrap occurs, it adds +1 cycle for each loop, completely thwarting the accurate delay.
  • No interrupt / NMI occurs during the delay code.

It is permissible for DMA to steal cycles during the loops. If you are expecting that to happen, you have to manually adjust the delay cycle count (and it is in fact possible to do so) in order to get the correct delay.

Explanations on the requirements

  • @rts12 means you know a memory address that contains byte $60 (RTS).

cycle instruction that fits your constraints (such as LDA $00), followed by RTS.

Instructions, addressing modes, byte counts, cycle counts and notes

Addressing mode Instruction type Bytes Cycle count Example instruction Notes
Implied Inter-register 1 2 TAX NOP has no side effects. Flag-manipulations like CLC, and SECCLV are used when their effects are desired.
Implied Stack push 1 3 PHA PHP is only paired with PLP.
Implied Stack pop 1 4 PLA
Implied Return 1 6 RTS Used indirectly when paired with JSR. Similarly for RTI.
Immediate 2 2 CMP #$C5 Includes instructions like LDA, LDX and LDY. Other ALU instructions are used in more complex situations.
Relative Branch 2 2—4 BCC *+2 Branch takes 3 cycles when taken, 2 otherwise. A page crossing adds +1 cycle when branch is taken, but because of difficulties setting that up, we don't use it.
Zeropage Read, write 2 3 LDA $A5
Zeropage RMW 2 5 INC @zptemp Writing to zeropage is only permitted when @zptemp is available. Technically we could save @zptemp into register and restore at end, but it is bytewise inferior to other techniques.
Zeropage indexed Read, write 2 4 LDA $EA,X Inferior to 2 × NOP, but useful for hiding additional code to be executed in a loop.
Zeropage indexed RMW 2 6 INC @zptemp,X Only doable when X is known to be 0, or when entire zeropage can be clobbered.
Indexed indirect Read, write 2 6 STA (@ptrtemp,X) Only doable when X is known to be 0.
Indexed indirect RMW 2 8 SLO (@ptrtemp,X) The most cost-effective instruction. Only doable when X is known to be 0, lest we write to a random address. All instructions in this category are unofficial.
Indirect indexed Read 2 5—6 LDA (@ptrtemp),Y Never used by this code.
Indirect indexed Write 2 6 STA (@ptrtemp),Y Only doable when Y is known to be 0.
Indirect indexed RMW 2 8 SLO (@ptrtemp),Y All instructions in this category are unofficial.
Absolute Jump 3 3 JMP *+3
Absolute Read, write 3 4 LDA $2808 Inferior to 2 × NOP, but can be used carefully to hide additional code to be executed in a loop.
Absolute RMW 3 6 INC $4018 Inferior to 3 × NOP.
Absolute indexed Read 3 4—5 LDA $0200,X Inferior to shorter alternatives.
Absolute indexed Write 3 5 STA $0200,X Inferior to shorter alternatives.
Absolute indexed RMW 3 7 INC $4018,X Only doable when writing into the given address is harmless considering the possible values of X.
Absolute indirect Jump 3 5 JMP (@ptrtemp) Inferior to shorter alternatives.

{{#css: 

 .testtable td{padding:2px} .testtable td pre{padding:2px;margin:2px}

}}


2 cycles

1 bytes 
EA       NOP
 No requirements
  • All instructions cost at least 2 cycles. There is no way to do 1 cycle of delay (though −1 cycles may sometimes appear in branch cost calculations).


3 cycles

2 bytes 
C5 C5    CMP $C5
 Clobbers Z&N, and C 
24 24    BIT $24
 Clobbers Z&N, and V 
A5 A5    LDA $A5
 Clobbers A, and Z&N 
A6 A6    LDX $A6
 Clobbers X, and Z&N 
A4 A4    LDY $A4
 Clobbers Y, and Z&N
3 bytes 
4C xx xx JMP *+3
 No requirements
  • Not relocatable means that the target address is hardcoded into the code. In ROM hacking, it sometimes makes sense to move code blobs around, and a hardcoded address makes it difficult to relocate the code. This restriction does not apply to branches, which use relative addressing. It is also assumed to not apply to JSR instructions, as chances are the JSR target is outside the code being relocated.


4 cycles

2 bytes 
EA   ... NOP      × 2
 No requirements
  • zp-indexed modes such as LDA $00,X also do 4 cycles, but having side effects, these two-byte instructions are inferior to a simple 2 × NOP.
  • There is also an unofficial opcode NOP $00,X (34 00), but there is no reason to use this instruction when the official equivalent has the same performance.


5 cycles

3 bytes 
18       CLC
90 00    BCC *+2
 Clobbers C 
B8       CLV
50 00    BVC *+2
 Clobbers V 
EA       NOP
A5 A5    LDA $A5
 Clobbers A, and Z&N 
EA       NOP
A6 A6    LDX $A6
 Clobbers X, and Z&N 
EA       NOP
A4 A4    LDY $A4
 Clobbers Y, and Z&N
4 bytes 
EA       NOP
4C xx xx JMP *+3
 No requirements
  • abs-indexed modes such as LDA $1234,X cause 4 or 5 cycles of delay, depending whether a page wrap occurred. Because you need extra setup code to make sure that a wrap does occur, you do not see this mode in these samples, outside situations where circumstances permit.


6 cycles

3 bytes 
EA   ... NOP      × 3
 No requirements
  • zp-indexed RMW instructions such as INC @zptemp,X do 6 cycles. Unless we know the value of X, it might write into any address between $00-$FF. This option is only useful if the entire range of $00-$FF is free for clobbering with random data, or if X has a known value.
  • ix instructions like LDA ($00,X) do 6 cycles, but the value of X decides where a pointer is read from, and said pointer can point anywhere. We only do that when the value of X is known.
  • iy instructions like LDA ($00),Y also do 5-6 cycles, but in addition to the note above, we cannot predict whether a wrap occurs or not. So we don't use this mode.
  • Absolute RMW instructions like INC $4018 do 6 cycles, but weighing 3 bytes with side-effects it would be inferior to 3 × NOP.


7 cycles

2 bytes 
08       PHP
28       PLP
 No requirements
  • PHP-PLP is very efficient for 7 cycles of delay, but it does modify stack contents. S register remains unchanged though.
  • PLA-PHA does not overwrite any bytes in stack. It just writes back the same byte. But it does clobber A and Z+N. It is not interrupt-unsafe either: If an interrupt happens, the stack byte does get temporarily clobbered, but the value is still in A when the interrupt exits, and gets written back in stack.
  • abs-indexed RMW instructions such as INC abs,X do 7 cycles. We only do this when either we know the value of X (for instance, INC $4018,X is safe when X is 0—7, or when the entire 256-byte page can be safely overwritten with random data.


8 cycles

4 bytes 
EA   ... NOP      × 4
 No requirements
  • Unofficial ix and iy RMW instructions such as SLO ($00,X) or SLO ($00),Y would do 8 cycles for 2 bytes of code. We only do that if we know X or Y to be zero, and we have a known pointer to safely rewritable data.


9 cycles

3 bytes 
EA       NOP
08       PHP
28       PLP
 No requirements
  • Jumping into the middle of another instruction and thereby reusing code is a very efficient way of reducing code size. Note that all code samples using branches on this page require that no page wrap occurs.


10 cycles

4 bytes 
08       PHP
C5 C5    CMP $C5
28       PLP
 No requirements
  • The ROL-ROR sequence preserves the original value of the memory address. Carry is also preserved.


11 cycles

4 bytes 
EA   ... NOP      × 2
08       PHP
28       PLP
 No requirements


12 cycles

3 bytes 
20 xx xx JSR @rts12
 Requires @rts12
4 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N
5 bytes 
08       PHP
18       CLC
90 00    BCC *+2
28       PLP
 No requirements
  • JSR-RTS causes 12 cycles of delay. But it does write a function return address in the stack, which may be unwanted in some applications. S is not modified.
  • Again, ROL-ROR does not have side effects (as long as an interrupt does not happen in the middle), except for Z+N.


13 cycles

5 bytes 
EA   ... NOP      × 3
08       PHP
28       PLP
 No requirements


14 cycles

4 bytes 
08       PHP       \ × 2
28       PLP       /
 No requirements


15 cycles

5 bytes 
08       PHP
BA       TSX
28       PLP
9A       TXS
28       PLP
 Clobbers X 
C5 C5    CMP $C5
20 xx xx JSR @rts12
 Clobbers Z&N, and C; and requires @rts12 
24 24    BIT $24
20 xx xx JSR @rts12
 Clobbers Z&N, and V; and requires @rts12 
A5 A5    LDA $A5
20 xx xx JSR @rts12
 Clobbers A, and Z&N; and requires @rts12 
A4 A4    LDY $A4
20 xx xx JSR @rts12
 Clobbers Y, and Z&N; and requires @rts12
6 bytes 
08       PHP
28       PLP
EA   ... NOP      × 4
 No requirements


16 cycles

5 bytes 
EA       NOP
08       PHP       \ × 2
28       PLP       /
 No requirements


17 cycles

6 bytes 
08       PHP
48       PHA
A5 A5    LDA $A5
68       PLA
28       PLP
 No requirements


18 cycles

6 bytes 
EA   ... NOP      × 2
08       PHP       \ × 2
28       PLP       /
 No requirements


19 cycles

5 bytes 
08       PHP
28       PLP
20 xx xx JSR @rts12
 Requires @rts12
6 bytes 
08       PHP
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 No requirements


20 cycles

5 bytes 
A9 2A    LDA #$2A ;hides 'ROL A'
38       SEC
10 FC    BPL *-2
 Clobbers A, Z&N, and C
7 bytes 
EA   ... NOP      × 3
08       PHP       \ × 2
28       PLP       /
 No requirements


21 cycles

5 bytes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
 Clobbers A, Z&N, and C 
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
6 bytes 
08       PHP       \ × 3
28       PLP       /
 No requirements


22 cycles

6 bytes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
38       SEC
10 FC    BPL *-2
 Clobbers A, Z&N, and C 
A2 02    LDX #2
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A0 03    LDY #3
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
08       PHP
BA       TSX
08       PHP
28   ... PLP      × 2
9A       TXS
28       PLP
 Clobbers X 
08       PHP
C5 C5    CMP $C5
28       PLP
20 xx xx JSR @rts12
 Requires @rts12
8 bytes 
08       PHP       \ × 2
28       PLP       /
EA   ... NOP      × 4
 No requirements


23 cycles

6 bytes 
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
 Clobbers A, Z&N, and C 
EA       NOP
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
EA       NOP
08       PHP       \ × 3
28       PLP       /
 No requirements


24 cycles

4 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C
6 bytes 
20 xx xx JSR @rts12× 2
 Requires @rts12
7 bytes 
A6 A6    LDX $A6
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
8 bytes 
08       PHP
C5 C5    CMP $C5
28       PLP       \ × 2
08       PHP       /
28       PLP
 No requirements


25 cycles

7 bytes 
98       TYA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
8 bytes 
EA   ... NOP      × 2
08       PHP       \ × 3
28       PLP       /
 No requirements


26 cycles

5 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C 
A2 04    LDX #4
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
EA       NOP
20 xx xx JSR @rts12× 2
 Requires @rts12
8 bytes 
08       PHP
48       PHA
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA
28       PLP
 No requirements


27 cycles

6 bytes 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C
7 bytes 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
38       SEC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C 
08       PHP
A9 2A    LDA #$2A ;hides 'ROL A'
38       SEC
10 FC    BPL *-2
28       PLP
 Clobbers A 
24 2C    BIT <$2C ;hides 'BIT $FDA2'
A2 FD    LDX #253
E8       INX
D0 FA    BNE *-4
 Clobbers X, Z&N, and V 
24 2C    BIT <$2C ;hides 'BIT $FDA0'
A0 FD    LDY #253
C8       INY
D0 FA    BNE *-4
 Clobbers Y, Z&N, and V 
A4 AC    LDY <$AC ;hides 'LDY $82A2'
A2 82    LDX #130
CA       DEX
30 FA    BMI *-4
 Clobbers X, Y, and Z&N
8 bytes 
EA   ... NOP      × 3
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
24 24    BIT $24
20 xx xx JSR @rts12× 2
 Clobbers Z&N, and V; and requires @rts12 
20 xx xx JSR @rts12
08       PHP
BA       TSX
28       PLP
9A       TXS
28       PLP
 Clobbers X; and requires @rts12
9 bytes 
EA   ... NOP      × 3
08       PHP       \ × 3
28       PLP       /
 No requirements


28 cycles

6 bytes 
38   ... SEC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C 
EA       NOP
A2 04    LDX #4
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68       PLA
 Clobbers Z&N, and C 
08       PHP
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
28       PLP
 Clobbers A 
08       PHP
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X 
08       PHP
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y
8 bytes 
08       PHP       \ × 4
28       PLP       /
 No requirements


29 cycles

6 bytes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
90 FC    BCC *-2
 Clobbers A, Z&N, and C 
A2 04    LDX #4
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
8 bytes 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
38       SEC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C 
08       PHP
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
38       SEC
10 FC    BPL *-2
28       PLP
 Clobbers A 
08       PHP
A2 02    LDX #2
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X 
08       PHP
A0 03    LDY #3
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y
9 bytes 
08       PHP
28       PLP
08       PHP
C5 C5    CMP $C5
28       PLP
20 xx xx JSR @rts12
 Requires @rts12
10 bytes 
08       PHP
C5 C5    CMP $C5
28       PLP
08       PHP
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 No requirements


30 cycles

7 bytes 
98       TYA
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 04    LDX #4
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
8 bytes 
48       PHA
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68       PLA
 Clobbers Z&N, and C 
08       PHP
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
28       PLP
 Clobbers A 
EA       NOP
08       PHP
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X 
EA       NOP
08       PHP
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y
9 bytes 
08       PHP
48       PHA
18       CLC
A9 6A    LDA #$6A ;hides 'ROR A'
90 FD    BCC *-1
68       PLA
28       PLP
 No requirements


31 cycles

5 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
 Clobbers A, Z&N, and C 
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 06    LDY #6
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
6 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A
8 bytes 
08       PHP
28       PLP
20 xx xx JSR @rts12× 2
 Requires @rts12
9 bytes 
08       PHP
A6 A6    LDX $A6
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X 
08       PHP
A4 A4    LDY $A4
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y
10 bytes 
08       PHP
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
28       PLP
 No requirements


32 cycles

6 bytes 
A2 05    LDX #5 ;hides 'ORA zp'
CA       DEX ;first loop only
CA       DEX
D0 FB    BNE *-3
 Clobbers A, X, and Z&N 
A0 05    LDY #5 ;hides 'ORA zp'
88       DEY ;first loop only
88       DEY
D0 FB    BNE *-3
 Clobbers A, Y, and Z&N
7 bytes 
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP      × 3
10 FA    BPL *-4
 Clobbers A, Z&N, and C
8 bytes 
EA       NOP
98       TYA
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
A6 A6    LDX $A6
A2 04    LDX #4
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
9 bytes 
48       PHA
98       TYA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N 
08       PHP
98       TYA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A 
EA   ... NOP      × 2
08       PHP
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X 
EA   ... NOP      × 2
08       PHP
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y
10 bytes 
08       PHP
48       PHA
18   ... CLC      × 2
A9 6A    LDA #$6A ;hides 'ROR A'
90 FD    BCC *-1
68       PLA
28       PLP
 No requirements


33 cycles

6 bytes 
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
 Clobbers A, Z&N, and C 
EA       NOP
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 06    LDY #6
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A 
08       PHP
A2 04    LDX #4
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X 
08       PHP
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y
9 bytes 
EA       NOP
08       PHP
28       PLP
20 xx xx JSR @rts12× 2
 Requires @rts12
10 bytes 
08       PHP       \ × 2
28       PLP       /
08       PHP
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 No requirements


34 cycles

5 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C 
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
 Clobbers Y, and Z&N
7 bytes 
A6 A6    LDX $A6
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N
8 bytes 
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C 
08       PHP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A
9 bytes 
08       PHP
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
38       SEC
10 FC    BPL *-2
68       PLA
28       PLP
 No requirements


35 cycles

6 bytes 
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
10 FB    BPL *-3
 Clobbers A, Z&N, and C 
A2 F8    LDX #248 ;hides 'SED'
E8   ... INX      × 2
D0 FB    BNE *-3
 Clobbers X, Z&N, and D 
A0 88    LDY #136 ;hides 'DEY'
88   ... DEY      × 2
30 FB    BMI *-3
 Clobbers Y, and Z&N
7 bytes 
98       TYA
A0 06    LDY #6
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N
8 bytes 
48       PHA
38   ... SEC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C 
08       PHP
38   ... SEC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A 
EA       NOP
08       PHP
A2 04    LDX #4
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X 
EA       NOP
08       PHP
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y
9 bytes 
08       PHP
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68       PLA
28       PLP
 No requirements


36 cycles

5 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V 
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
6 bytes 
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
 Clobbers A, Z&N, and C
8 bytes 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
90 FC    BCC *-2
68       PLA
 Clobbers Z&N, and C 
08       PHP
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
90 FC    BCC *-2
28       PLP
 Clobbers A 
08       PHP
A2 04    LDX #4
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X 
08       PHP
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y
9 bytes 
20 xx xx JSR @rts12× 3
 Requires @rts12
10 bytes 
08       PHP
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
38       SEC
10 FC    BPL *-2
68       PLA
28       PLP
 No requirements


37 cycles

7 bytes 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C 
A2 04    LDX #4
EA   ... NOP      × 2
CA       DEX
D0 FB    BNE *-3
 Clobbers X, and Z&N 
A0 04    LDY #4
EA   ... NOP      × 2
88       DEY
D0 FB    BNE *-3
 Clobbers Y, and Z&N
8 bytes 
EA       NOP
98       TYA
A0 06    LDY #6
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N
9 bytes 
48       PHA
98       TYA
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N 
08       PHP
98       TYA
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A 
EA   ... NOP      × 2
08       PHP
A2 04    LDX #4
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X 
EA   ... NOP      × 2
08       PHP
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y
10 bytes 
08       PHP
48       PHA
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68       PLA
28       PLP
 No requirements


38 cycles

6 bytes 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V 
EA       NOP
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68       PLA
 Clobbers Z&N, and C 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
28       PLP
 Clobbers A 
08       PHP
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X 
08       PHP
A0 06    LDY #6
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y
8 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 No requirements


39 cycles

4 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C
7 bytes 
A6 A6    LDX $A6
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
8 bytes 
98       TYA
A0 88    LDY #136 ;hides 'DEY'
88   ... DEY      × 2
30 FB    BMI *-3
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 05    LDX #5 ;hides 'ORA zp'
CA       DEX ;first loop only
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers A, and X 
08       PHP
A0 05    LDY #5 ;hides 'ORA zp'
88       DEY ;first loop only
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers A, and Y
9 bytes 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP      × 3
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C 
08       PHP
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP      × 3
10 FA    BPL *-4
28       PLP
 Clobbers A
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N 
08       PHP
A6 A6    LDX $A6
A2 04    LDX #4
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X 
08       PHP
A4 A4    LDY $A4
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y
11 bytes 
08       PHP
48       PHA
98       TYA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 No requirements


40 cycles

6 bytes 
A2 05    LDX #5 ;hides 'ORA zp'
EA       NOP
CA       DEX
D0 FB    BNE *-3
 Clobbers A, X, and Z&N 
A0 05    LDY #5 ;hides 'ORA zp'
EA       NOP
88       DEY
D0 FB    BNE *-3
 Clobbers A, Y, and Z&N
7 bytes 
98       TYA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
8 bytes 
48       PHA
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68       PLA
 Clobbers Z&N, and C 
08       PHP
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
28       PLP
 Clobbers A 
EA       NOP
08       PHP
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X 
EA       NOP
08       PHP
A0 06    LDY #6
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y
9 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 No requirements


41 cycles

5 bytes 
38       SEC
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
28       PLP
 Clobbers A 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
28       PLP
 Clobbers Y
9 bytes 
08       PHP
A6 A6    LDX $A6
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X
10 bytes 
08       PHP
48       PHA
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 No requirements


42 cycles

6 bytes 
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C
7 bytes 
EA       NOP
A2 05    LDX #5 ;hides 'ORA zp'
EA       NOP
CA       DEX
D0 FB    BNE *-3
 Clobbers A, X, and Z&N 
EA       NOP
A0 05    LDY #5 ;hides 'ORA zp'
EA       NOP
88       DEY
D0 FB    BNE *-3
 Clobbers A, Y, and Z&N
8 bytes 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C 
08       PHP
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
10 FB    BPL *-3
28       PLP
 Clobbers A 
08       PHP
A2 F8    LDX #248 ;hides 'SED'
E8   ... INX      × 2
D0 FB    BNE *-3
28       PLP
 Clobbers X 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
88   ... DEY      × 2
30 FB    BMI *-3
28       PLP
 Clobbers Y
9 bytes 
48       PHA
98       TYA
A0 06    LDY #6
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N
10 bytes 
08       PHP
48       PHA
38   ... SEC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 No requirements


43 cycles

6 bytes 
38   ... SEC      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
A2 05    LDX #5
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A0 06    LDY #6
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A 
08       PHP
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X 
08       PHP
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y
8 bytes 
48       PHA
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C
10 bytes 
08       PHP
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
90 FC    BCC *-2
68       PLA
28       PLP
 No requirements


44 cycles

6 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
10 FB    BPL *-3
 Clobbers A, Z&N, and C 
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
88       DEY
30 FB    BMI *-3
 Clobbers Y, and Z&N
7 bytes 
A6 A6    LDX $A6
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N
9 bytes 
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C 
08       PHP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
28       PLP
 Clobbers A 
08       PHP
A2 04    LDX #4
EA   ... NOP      × 2
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X 
08       PHP
A0 04    LDY #4
EA   ... NOP      × 2
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers Y
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 06    LDY #6
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N
11 bytes 
08       PHP
48       PHA
98       TYA
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 No requirements


45 cycles

7 bytes 
98       TYA
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
8 bytes 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A 
EA       NOP
08       PHP
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X 
EA       NOP
08       PHP
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y
9 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68       PLA
28       PLP
 No requirements


46 cycles

5 bytes 
A2 08    LDX #8
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 09    LDY #9
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
6 bytes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C 
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A
9 bytes 
08       PHP
A6 A6    LDX $A6
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X 
08       PHP
A4 A4    LDY $A4
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y
10 bytes 
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
88   ... DEY      × 2
30 FB    BMI *-3
A8       TAY
68       PLA
 Clobbers Z&N
11 bytes 
08       PHP
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP      × 3
10 FA    BPL *-4
68       PLA
28       PLP
 No requirements


47 cycles

8 bytes 
98       TYA
A0 06    LDY #6
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 3
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
08       PHP
A2 05    LDX #5 ;hides 'ORA zp'
EA       NOP
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers A, and X 
EA   ... NOP      × 3
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
08       PHP
A0 05    LDY #5 ;hides 'ORA zp'
EA       NOP
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers A, and Y
9 bytes 
48       PHA
98       TYA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N 
08       PHP
98       TYA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A 
EA   ... NOP      × 2
08       PHP
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X 
EA   ... NOP      × 2
08       PHP
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y
10 bytes 
08       PHP
48       PHA
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68       PLA
28       PLP
 No requirements


48 cycles

6 bytes 
EA       NOP
A2 08    LDX #8
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 09    LDY #9
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
38       SEC
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C 
08       PHP
38       SEC
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A 
08       PHP
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X 
08       PHP
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y
9 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
28       PLP
 No requirements


49 cycles

4 bytes 
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, and Z&N
7 bytes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
90 FB    BCC *-3
 Clobbers A, Z&N, and C 
A6 A6    LDX $A6
A2 08    LDX #8
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N
8 bytes 
C5 C5    CMP $C5
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C 
08       PHP
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A
10 bytes 
08       PHP
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
28       PLP
 No requirements


50 cycles

6 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA       NOP
B0 FB    BCS *-3
 Clobbers A, Z&N, C, and V 
A2 07    LDX #7
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 06    LDY #6
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N
7 bytes 
98       TYA
A0 09    LDY #9
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N
8 bytes 
48       PHA
38   ... SEC      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C 
08       PHP
38   ... SEC      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A 
08       PHP
A2 05    LDX #5
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X 
08       PHP
A0 06    LDY #6
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y
9 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
68       PLA
28       PLP
 No requirements


Sanity checks

It is possible to verify on compile time that no page wrap occurs, by replacing all branches with these macros: 

.macro branch_check opc, dest
    opc dest
    .assert >* = >(dest), warning, "branch_check: failed, crosses page"
.endmacro
.macro bccnw dest
        branch_check bcc, dest
.endmacro
.macro bcsnw dest
        branch_check bcs, dest
.endmacro
.macro beqnw dest
        branch_check beq, dest
.endmacro
.macro bnenw dest
        branch_check bne, dest
.endmacro
.macro bminw dest
        branch_check bmi, dest
.endmacro
.macro bplnw dest
        branch_check bpl, dest
.endmacro
.macro bvcnw dest
        branch_check bvc, dest
.endmacro
.macro bvsnw dest
        branch_check bvs, dest
.endmacro

See also

  • Cycle counting
  • Delay code for functions that produce runtime-determined amount of delay
  • Bisqwit’s “vending machine” for producing a ca65-compatible delay_n macro for arbitrary number of cycles, with more fine-grained configurable constraints: http://bisqwit.iki.fi/utils/nesdelay.php The samples on this page are excerpts from files generated by this online tool.
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