Fixed cycle delay: Difference between revisions

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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.


Instructions, addressing modes, byte counts, cycle counts and notes:
{| class="wikitable testtable"
{| class="wikitable testtable"
! Addressing mode !! Instruction type !! Bytes !! Cycle count !! Example instruction !! Notes
! 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.
|-
|-
! Implied !! 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>.
|-
|-
! Implied !! Stack push    || 1 || 3 || <code>PHA</code> || We use <code>PHP</code> only paired with <code>PLP</code>. We also use <code>PHA</code> in various circumstances.
! scope="row"| Implied
! scope="row"| Stack pop
| 1 || 4 || <code>PLA</code> ||
|-
|-
! Implied !! Stack pop      || 1 || 4 || <code>PLA</code> || <code>RTS</code> does 6 cycles, but we do that indirectly, when paired with <code>JSR</code>. Similarly for <code>RTI</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>.
|-
|-
! Immediate !!              || 2 || 2 || <code>LDA #1</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"| 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.
|-
|-
! Relative !! Branch       || 2 || 2—3 || <code>BCC *+2</code> || Branch takes 3 cycles when taken, 2 otherwise. We do not use 4-cycle branches, which are caused by page crossing, as these are more difficult to set up and ensure than non-page crossing ones are.
! 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.
|-
|-
! Zeropage !! Read, write || 2 || 3 || <code>LDA $A5</code>
! scope="row"| Zeropage  
! scope="row"| Read, write
| 2 || 3 || <code>LDA $A5</code>
|-
|-
! Zeropage !! Read-modify-write (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  
! 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.
|-
|-
! Zeropage indexed !! Read, write || 2 || 4 || <code>LDA $EA,X</code> || Side-effectwise inferior to same length 2 × <code>NOP</code>, but used in special circumstances.
! 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.
|-
|-
! Zeropage indexed !! RMW         || 2 || 6 || <code>INC @zptemp,X</code> || Only done when we can have @zptemp and X is known to be 0, or when entire zeropage can be clobbered.
! 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.
|-  
|-  
! Indexed indirect || Read, write || 2 || 6 || <code>LDA (@ptrtemp,X)</code> || Only doable when X is known to be 0. Never used by this code.
! scope="row"| Indexed indirect
! scope="row"| Read, write
| 2 || 6 || <code>STA (@ptrtemp,X)</code> || Only doable when X is known to be 0.
|-  
|-  
! Indexed indirect || 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"| 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.
|-
|-
! Indirect indexed || Read       || 2 || 5—6 || <code>LDA (@ptrtemp),Y</code> || Only doable when Y is known to be 0. Never used by this code.
! scope="row"| Indirect indexed
! scope="row"| Read
| 2 || 5—6 || <code>LDA (@ptrtemp),Y</code> || Never used by this code.
|-
|-
! Indirect indexed || Write       || 2 || 6        || <code>STA (@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.
|-
|-
! Indirect indexed || RMW         || 2 || 8        || <code>SLO (@ptrtemp),Y</code> || All instructions in this category are unofficial.
! scope="row"| Indirect indexed
! scope="row"| RMW
| 2 || 8        || <code>SLO (@ptrtemp),Y</code> || All instructions in this category are unofficial.
|-
|-
! Absolute !! Jump       || 3 || 3 || <code>JMP *+3</code> ||  
! scope="row"| Absolute
! scope="row"| Jump
| 3 || 3 || <code>JMP *+3</code> ||  
|-
|-
! Absolute !! Read, write || 3 || 4 || <code>LDA $2808</code> || Inferior to 2 × <code>NOP</code>, but useful for hiding additional code to be executed in a loop.
! 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.
|-
|-
! Absolute !! RMW         || 3 || 6 || <code>INC $4018</code> || Side-effectwise inferior to same-length 3 × <code>NOP</code>.
! scope="row"| Absolute
! scope="row"| RMW
| 3 || 6 || <code>INC $4018</code> || Inferior to 3 × <code>NOP</code>.
|-
|-
! Absolute indexed !! Read || 3 || 4—5 || <code>LDA $0200,X</code> || Inferior to shorter alternatives.
! scope="row"| Absolute indexed
! scope="row"| Read
| 3 || 4—5 || <code>LDA $0200,X</code> || Inferior to shorter alternatives.
|-
|-
! Absolute indexed !! Write || 3 || 5 || <code>STA $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.
|-
|-
! Absolute indexed !! RMW || 3 || 7 || <code>INC $4018,X</code> || Only done when we know that writing into the given address is harmless considering the possible values of X.
! 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.
|-
|-
! Absolute indirect !! Jump       || 3 || 5         || <code>JMP (@ptrtemp)</code> || Never used by this code.
! scope="row"| Absolute indirect
! scope="row"| Jump
| 3 || 5 || <code>JMP (@ptrtemp)</code> || Inferior to shorter alternatives.
|}
|}


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=== 3 cycles ===
=== 3 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|1 bytes
|-
|<pre>48      PHA</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|2 bytes
!colspan="2"|2 bytes
|-
|-
Line 134: Line 146:
|-
|-
|<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
|-
|-
|}
|}
Line 149: Line 157:
=== 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
|-
|-
Line 164: Line 168:
=== 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
|-
|-
Line 187: Line 184:
|<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 205: 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      × 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
|-
|-
Line 230: 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
* <code>PHP-PLP</code> is very efficient for 7 cycles of delay, but it does modify stack contents. S register remains unchanged though.
|-
!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      × 2
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 2
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 2
A6 A6    LDX $A6</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A4 A4    LDY $A4</pre>||Clobbers Y, and Z&N
|-
|<pre>EA  ... NOP      × 2
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 2
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|5 bytes
|-
|<pre>EA  ... NOP      × 2
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
* <code>PHP-PLP</code> is very efficient for 7 cycles of delay, but it does modify stack contents. S register remains unchanged though.
* <code>PLA-PHA</code> 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.
* <code>PLA-PHA</code> 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 <code>INC abs,X</code> do 7 cycles. We only do this when either we know the value of X (for instance, <code>INC $4018,X</code> is safe when X is 0&mdash;7</code>, or when the entire 256-byte page can be safely overwritten with random data.
* abs-indexed RMW instructions such as <code>INC abs,X</code> do 7 cycles. We only do this when either we know the value of X (for instance, <code>INC $4018,X</code> is safe when X is 0&mdash;7</code>, or when the entire 256-byte page can be safely overwritten with random data.
Line 285: Line 222:
=== 8 cycles ===
=== 8 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|2 bytes
|-
|<pre>68  ... PLA      × 2</pre>||Clobbers A, S, and Z&N
|-
!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
F6 F6    INC $F6,X</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>EA      NOP
48  ... PHA      × 2</pre>||Clobbers S; and writes in stack
|-
|<pre>AA      TAX
68      PLA
8C      TXA</pre>||Clobbers X, S, and Z&N
|-
|<pre>A8      TAY
68      PLA
98      TYA</pre>||Clobbers Y, S, and Z&N
|-
!colspan="2"|4 bytes
!colspan="2"|4 bytes
|-
|-
Line 323: Line 236:
|<pre>EA      NOP
|<pre>EA      NOP
08      PHP
08      PHP
28      PLP</pre>||Writes in stack
28      PLP</pre>||No requirements
|-
|<pre>EA      NOP
68      PLA
48      PHA</pre>||Clobbers A, and Z&N
|-
|-
|}
* 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
!colspan="2"|4 bytes
|-
|-
|<pre>A2 AE   LDX #$AE  ;hides 'LDX $FDD0'
|<pre>08      PHP
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
C5 C5   CMP $C5
28      PLP</pre>||No requirements
|-
|-
|<pre>A0 AC    LDY #$AC  ;hides 'LDY $FDD0'
|}
D0 FD    BNE *-1</pre>||Clobbers Y, 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
|-
|-
|<pre>EA  ... NOP      × 2
|<pre>EA  ... NOP      × 2
E6 xx    INC @zptemp</pre>||Clobbers Z&N; and requires @zptemp
08       PHP
|-
28       PLP</pre>||No requirements
|<pre>EA      NOP
FE 00 02 INC $0200,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA       NOP
FE 00 03 INC $0300,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA       NOP
FE 00 04 INC $0400,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|5 bytes
|-
|<pre>18  ... CLC      × 3
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 3
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 3
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 3
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|6 bytes
|-
|<pre>EA  ... NOP      × 3
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}
* 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 ===
=== 12 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|3 bytes
|-
|-
|<pre>48      PHA
|<pre>20 xx xx JSR @rts12</pre>||Requires @rts12
08      PHP
28      PLP</pre>||Clobbers S; and writes in stack
|-
|<pre>EA      NOP
68  ... PLA      × 2</pre>||Clobbers A, S, and Z&N
|-
|-
!colspan="2"|4 bytes
!colspan="2"|4 bytes
|-
|-
|<pre>08      PHP
|<pre>36 36   ROL $36,X
C5 C5    CMP $C5
76 36   ROR $36,X</pre>||Clobbers Z&N
28      PLP</pre>||Writes in stack
|-
|<pre>26 26   ROL $26
66 26   ROR $26</pre>||Clobbers Z&N
|-
|-
!colspan="2"|5 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>EA  ... NOP      × 5</pre>||No requirements
|<pre>08      PHP
18      CLC
90 00    BCC *+2
28      PLP</pre>||No requirements
|-
|-
|}
|}
* The <code>ROL-ROR</code> sequence preserves the original value of the memory address. Carry is also preserved.
* <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.




=== 11 cycles ===
=== 13 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>68   ... PLA     × 2
|<pre>EA   ... NOP     × 3
48       PHA</pre>||Clobbers A, S, and Z&N
08       PHP
28      PLP</pre>||No requirements
|-
|-
|}
=== 14 cycles ===
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|4 bytes
|-
|-
|<pre>EA  ... NOP      × 2
|<pre>08      PHP      \ × 2
08      PHP
28       PLP       /</pre>||No requirements
28       PLP</pre>||Writes in stack
|-
|-
|}
|<pre>EA  ... NOP      × 2
 
68       PLA
 
48       PHA</pre>||Clobbers A, and Z&N
=== 15 cycles ===
|-
{| class="wikitable testtable"
|<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
|-
!colspan="2"|5 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>E6 xx    INC @zptemp
|<pre>08      PHP
EA  ... NOP      × 3</pre>||Clobbers Z&N; and requires @zptemp
BA      TSX
28      PLP
9A      TXS
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA  ... NOP      × 2
|<pre>C5 C5    CMP $C5
FE 00 02 INC $0200,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
20 xx xx JSR @rts12</pre>||Clobbers Z&N, and C; and requires @rts12
|-
|-
|<pre>EA  ... NOP      × 2
|<pre>24 24    BIT $24
FE 00 03 INC $0300,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
20 xx xx JSR @rts12</pre>||Clobbers Z&N, and V; and requires @rts12
|-
|-
|<pre>EA  ... NOP      × 2
|<pre>A5 A5    LDA $A5
FE 00 04 INC $0400,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
20 xx xx JSR @rts12</pre>||Clobbers A, and Z&N; and requires @rts12
|-
|-
|<pre>EA  ... NOP      × 2
|<pre>A4 A4    LDY $A4
FE 00 05 INC $0500,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
20 xx xx JSR @rts12</pre>||Clobbers Y, and Z&N; and requires @rts12
|-
|<pre>EA  ... NOP      × 2
FE 00 06 INC $0600,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      × 2
FE 00 07 INC $0700,X</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|-
!colspan="2"|6 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>18   ... CLC     × 4
|<pre>08      PHP
90 00    BCC *+2</pre>||Clobbers C
28      PLP
EA   ... NOP     × 4</pre>||No requirements
|-
|-
|<pre>B8  ... CLV      × 4
|}
50 00    BVC *+2</pre>||Clobbers V
 
 
=== 16 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|-
|<pre>EA   ... NOP     × 4
|<pre>EA       NOP
85 xx    STA @zptemp</pre>||Requires @zptemp
08      PHP      \ × 2
28      PLP      /</pre>||No requirements
|-
|-
|<pre>EA  ... NOP      × 4
|}
04 04    NOP $04</pre>||Requires support for unofficial opcodes
 
 
=== 17 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
|-
|-
!colspan="2"|7 bytes
|<pre>08      PHP
|-
48      PHA
|<pre>EA  ... NOP      × 4
A5 A5    LDA $A5
4C xx xx JMP *+3</pre>||Not relocatable code
68      PLA
28      PLP</pre>||No requirements
|-
|-
|}
|}




=== 12 cycles ===
=== 18 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>EA  ... NOP      × 2
08      PHP      \ × 2
28      PLP      /</pre>||No requirements
|-
|-
|<pre>68  ... PLA      × 3</pre>||Clobbers A, S, and Z&N
|}
 
 
=== 19 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|-
!colspan="2"|4 bytes
|<pre>08      PHP
28      PLP
20 xx xx JSR @rts12</pre>||Requires @rts12
|-
|-
|<pre>36 36    ROL $36,X
!colspan="2"|6 bytes
76 36    ROR $36,X</pre>||Clobbers Z&N
|-
|-
|<pre>08      PHP
|<pre>08      PHP
E6 xx   INC @zptemp
36 36   ROL $36,X
28      PLP</pre>||Requires @zptemp; and writes in stack
76 36    ROR $36,X
|-
28      PLP</pre>||No requirements
|<pre>48  ... PHA      × 4</pre>||Clobbers S; and writes in stack
|-
|-
|}
=== 20 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>08      PHP
|<pre>A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
38       SEC
90 00   BCC *+2
10 FC   BPL *-2</pre>||Clobbers A, Z&N, and C
28      PLP</pre>||Writes in stack
|-
|-
!colspan="2"|6 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>EA  ... NOP      × 6</pre>||No requirements
|<pre>EA  ... NOP      × 3
08      PHP      \ × 2
28      PLP      /</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 ===
=== 21 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|2 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>00 00   BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
|<pre>18      CLC
A9 2A   LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1</pre>||Clobbers A, Z&N, and C
|-
|-
!colspan="2"|4 bytes
|<pre>A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>08       PHP
|<pre>A0 04    LDY #4
F6 F6   INC $F6,X
88       DEY
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>F6 F6    INC $F6,X
!colspan="2"|6 bytes
68      PLA
48      PHA</pre>||Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|-
|<pre>48  ... PHA      × 2
|<pre>08      PHP       \ × 3
08      PHP
28      PLP       /</pre>||No requirements
28      PLP</pre>||Clobbers S; and writes in stack
|-
|-
|<pre>EA      NOP
|}
68  ... PLA      × 2
 
48      PHA</pre>||Clobbers A, S, and Z&N
 
=== 22 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
|-
|-
!colspan="2"|5 bytes
|<pre>18      CLC
|-
A9 2A    LDA #$2A ;hides 'ROL A'
|<pre>EA  ... NOP      × 3
38       SEC
08       PHP
10 FC    BPL *-2</pre>||Clobbers A, Z&N, and C
28      PLP</pre>||Writes in stack
|-
|-
|<pre>EA   ... NOP     × 3
|<pre>A2 02    LDX #2
68       PLA
EA       NOP
48      PHA</pre>||Clobbers A, and Z&N
CA       DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA      NOP
|<pre>A0 03    LDY #3
AA      TAX
EA      NOP
68      PLA
88       DEY
48      PHA
D0 FC   BNE *-2</pre>||Clobbers Y, and Z&N
8C      TXA</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A8      TAY
68      PLA
48       PHA
98      TYA</pre>||Clobbers Y, and Z&N
|-
|<pre>EA      NOP
E6 xx   INC @zptemp
F6 F6    INC $F6,X</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
!colspan="2"|6 bytes
|-
|<pre>C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26
66 26    ROR $26</pre>||Clobbers Z&N, and V
|-
|<pre>85 xx    STA @zptemp
26 26    ROL $26
66 26    ROR $26</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>EA  ... NOP      × 3
FE 00 02 INC $0200,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA  ... NOP      × 3
FE 00 03 INC $0300,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA  ... NOP      × 3
FE 00 04 INC $0400,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA  ... NOP      × 3
FE 00 05 INC $0500,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA  ... NOP      × 3
FE 00 06 INC $0600,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      × 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
|-
|-
!colspan="2"|7 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>18   ... CLC     × 5
|<pre>08      PHP
90 00    BCC *+2</pre>||Clobbers C
BA      TSX
08      PHP
28   ... PLP     × 2
9A      TXS
28      PLP</pre>||Clobbers X
|-
|-
|<pre>B8  ... CLV      × 5
|<pre>08      PHP
50 00   BVC *+2</pre>||Clobbers V
C5 C5   CMP $C5
|-
28      PLP
|<pre>4C xx xx JMP *+3
20 xx xx JSR @rts12</pre>||Requires @rts12
26 26    ROL $26
66 26    ROR $26</pre>||Clobbers Z&N; and not relocatable code
|-
|<pre>EA  ... NOP      × 5
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 5
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
|-
!colspan="2"|8 bytes
!colspan="2"|8 bytes
|-
|-
|<pre>EA  ... NOP      × 5
|<pre>08      PHP      \ × 2
4C xx xx JMP *+3</pre>||Not relocatable code
28      PLP      /
EA  ... NOP      × 4</pre>||No requirements
|-
|-
|}
|}




=== 14 cycles ===
=== 23 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; 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      \ × 2
CA       DEX
28       PLP      /</pre>||Writes in stack
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>68      PLA      \ × 2
48      PHA      /</pre>||Clobbers A, and Z&N
|-
!colspan="2"|5 bytes
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
36 36   ROL $36,X
A0 04   LDY #4
76 36   ROR $36,X</pre>||Clobbers Z&N
88      DEY
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|7 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>EA   ... NOP     × 7</pre>||No requirements
|<pre>EA       NOP
08      PHP      \ × 3
28      PLP      /</pre>||No requirements
|-
|-
|}
|}




=== 15 cycles ===
=== 24 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
|-
|<pre>20 xx xx JSR @rts15</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>EA      NOP
00 00    BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|4 bytes
!colspan="2"|4 bytes
|-
|-
|<pre>68      PLA
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
48      PHA
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
68  ... PLA      × 2</pre>||Clobbers A, S, and Z&N
|-
|-
|<pre>48      PHA
!colspan="2"|6 bytes
20 xx xx JSR @rts12</pre>||Clobbers S; requires @rts12; and writes in stack
|-
|-
!colspan="2"|5 bytes
|<pre>20 xx xx JSR @rts12× 2</pre>||Requires @rts12
|-
|-
|<pre>08      PHP
!colspan="2"|7 bytes
BA      TSX
28      PLP
9A      TXS
28      PLP</pre>||Clobbers X; and writes in stack
|-
|-
|<pre>68      PLA
|<pre>A6 A6    LDX $A6
48      PHA
A2 04    LDX #4
BA      TSX
CA       DEX
68       PLA
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
9A      TXS</pre>||Clobbers A, X, and Z&N; and unsafe for interrupts
|-
|-
|<pre>EA      NOP
|<pre>A4 A4    LDY $A4
08       PHP
A0 04    LDY #4
F6 F6   INC $F6,X
88       DEY
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>EA      NOP
!colspan="2"|8 bytes
F6 F6    INC $F6,X
68      PLA
48      PHA</pre>||Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|-
|<pre>C5 C5    CMP $C5
|<pre>08      PHP
20 xx xx JSR @rts12</pre>||Clobbers Z&N, and C; requires @rts12; and writes in stack
C5 C5    CMP $C5
28      PLP      \ × 2
08      PHP      /
28      PLP</pre>||No requirements
|-
|-
|<pre>24 24    BIT $24
|}
20 xx xx JSR @rts12</pre>||Clobbers Z&N, and V; requires @rts12; and writes in stack
 
 
=== 25 cycles ===
{| class="wikitable testtable"
!colspan="2"|7 bytes
|-
|-
|<pre>A5 A5   LDA $A5
|<pre>98      TYA
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
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>A4 A4   LDY $A4
|<pre>EA  ... NOP      × 2
20 xx xx JSR @rts12</pre>||Clobbers Y, and Z&N; requires @rts12; and writes in stack
A2 04   LDX #4
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>85 xx   STA @zptemp
|<pre>EA  ... NOP      × 2
20 xx xx JSR @rts12</pre>||Requires @zptemp, and @rts12; and writes in stack
A0 04   LDY #4
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>04 04    NOP $04
!colspan="2"|8 bytes
20 xx xx JSR @rts12</pre>||Requires @rts12, and support for unofficial opcodes; and writes in stack
|-
|-
|<pre>48   ... PHA     × 5</pre>||Clobbers S; and writes in stack
|<pre>EA   ... NOP     × 2
08      PHP      \ × 3
28      PLP      /</pre>||No requirements
|-
|-
|<pre>AA      TAX
|}
68  ... PLA      × 2
 
48      PHA
 
8C      TXA</pre>||Clobbers X, S, and Z&N
=== 26 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|-
|<pre>A8       TAY
|<pre>18       CLC
68  ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
48      PHA
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
98      TYA</pre>||Clobbers Y, S, and Z&N
|-
|-
!colspan="2"|6 bytes
|<pre>A2 04    LDX #4
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>08      PHP
|<pre>A0 05    LDY #5
28       PLP
88       DEY
EA  ... NOP      × 4</pre>||Writes in stack
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>C5 C5    CMP $C5
!colspan="2"|7 bytes
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N, and C
|-
|-
|<pre>24 24    BIT $24
|<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, and V
|-
|-
|<pre>A5 A5    LDA $A5
!colspan="2"|8 bytes
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers A, and Z&N
|-
|-
|<pre>A6 A6    LDX $A6
|<pre>08      PHP
48      PHA
36 36    ROL $36,X
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers X, and Z&N
76 36    ROR $36,X
68      PLA
28      PLP</pre>||No requirements
|-
|-
|<pre>A4 A4    LDY $A4
|}
36 36    ROL $36,X
 
76 36    ROR $36,X</pre>||Clobbers Y, and Z&N
 
=== 27 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
|-
|-
|<pre>E6 xx   INC @zptemp
|<pre>A5 A5   LDA $A5
26 26    ROL $26
A9 0A   LDA #$0A ;hides 'ASL A'
66 26   ROR $26</pre>||Clobbers Z&N; and requires @zptemp
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
|-
|<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
A9 2A   LDA #$2A ;hides 'ROL A'
76 36   ROR $36,X</pre>||Clobbers Z&N; and not relocatable code
38      SEC
10 FC   BPL *-2
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>FE 00 02 INC $0200,X
|<pre>08      PHP
EA  ... NOP      × 4</pre>||Clobbers Z&N; and requires writable $200-$2FF
A9 2A    LDA #$2A ;hides 'ROL A'
38      SEC
10 FC    BPL *-2
28      PLP</pre>||Clobbers A
|-
|-
|<pre>FE 00 03 INC $0300,X
|<pre>24 2C    BIT <$2C ;hides 'BIT $FDA2'
EA  ... NOP      × 4</pre>||Clobbers Z&N; and requires writable $300-$3FF
A2 FD    LDX #253
E8      INX
D0 FA    BNE *-4</pre>||Clobbers X, Z&N, and V
|-
|-
|<pre>FE 00 04 INC $0400,X
|<pre>24 2C    BIT <$2C ;hides 'BIT $FDA0'
EA  ... NOP      × 4</pre>||Clobbers Z&N; and requires writable $400-$4FF
A0 FD    LDY #253
C8      INY
D0 FA    BNE *-4</pre>||Clobbers Y, Z&N, and V
|-
|-
|<pre>FE 00 05 INC $0500,X
|<pre>A4 AC    LDY <$AC ;hides 'LDY $82A2'
EA  ... NOP      × 4</pre>||Clobbers Z&N; and requires writable $500-$5FF
A2 82    LDX #130
|-
CA      DEX
|<pre>FE 00 06 INC $0600,X
30 FA    BMI *-4</pre>||Clobbers X, Y, and Z&N
EA  ... NOP      × 4</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
EA  ... NOP      × 4</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|-
!colspan="2"|8 bytes
!colspan="2"|8 bytes
|-
|-
|<pre>18   ... CLC     × 6
|<pre>EA   ... NOP     × 3
90 00   BCC *+2</pre>||Clobbers C
A2 04   LDX #4
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>B8   ... CLV     × 6
|<pre>EA   ... NOP     × 3
50 00   BVC *+2</pre>||Clobbers V
A0 04   LDY #4
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>EA  ... NOP      × 6
|<pre>24 24    BIT $24
85 xx   STA @zptemp</pre>||Requires @zptemp
20 xx xx JSR @rts12× 2</pre>||Clobbers Z&N, and V; and requires @rts12
|-
|-
|<pre>EA  ... NOP      × 6
|<pre>20 xx xx JSR @rts12
04 04    NOP $04</pre>||Requires support for unofficial opcodes
08      PHP
BA      TSX
28      PLP
9A      TXS
28      PLP</pre>||Clobbers X; and requires @rts12
|-
|-
!colspan="2"|9 bytes
!colspan="2"|9 bytes
|-
|-
|<pre>EA  ... NOP      × 6
|<pre>EA  ... NOP      × 3
4C xx xx JMP *+3</pre>||Not relocatable code
08      PHP      \ × 3
28      PLP      /</pre>||No requirements
|-
|-
|}
|}




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




=== 17 cycles ===
=== 29 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|3 bytes
!colspan="2"|6 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 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 @rts15</pre>||Requires @rts12, and @rts15; and writes in stack
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>EA  ... NOP      × 2
!colspan="2"|8 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
18      CLC
A9 2A    LDA #$2A ;hides 'ROL A'
38      SEC
10 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
!colspan="2"|5 bytes
|<pre>08      PHP
|-
18      CLC
|<pre>E6 xx   INC @zptemp
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts12</pre>||Clobbers Z&N; requires @zptemp, and @rts12; and writes in stack
38      SEC
10 FC   BPL *-2
28      PLP</pre>||Clobbers A
|-
|-
|<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
A2 02    LDX #2
EA      NOP
CA      DEX
10 FC   BPL *-2
28      PLP</pre>||Clobbers X
|-
|-
|<pre>24 24   BIT $24
|<pre>08      PHP
20 xx xx JSR @rts14</pre>||Clobbers Z&N, and V; requires @rts12, and @rts14; and writes in stack
A0 03    LDY #3
EA      NOP
88      DEY
D0 FC   BNE *-2
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>A5 A5    LDA $A5
!colspan="2"|9 bytes
20 xx xx JSR @rts14</pre>||Clobbers A, and Z&N; requires @rts12, and @rts14; and writes in stack
|-
|-
|<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
28      PLP
08      PHP
C5 C5   CMP $C5
28      PLP
20 xx xx JSR @rts12</pre>||Requires @rts12
|-
|-
|<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
C5 C5    CMP $C5
28      PLP
08      PHP
36 36   ROL $36,X
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
 
 
=== 30 cycles ===
{| class="wikitable testtable"
!colspan="2"|7 bytes
|-
|-
|<pre>48       PHA
|<pre>98       TYA
08       PHP      \ × 2
A0 05    LDY #5
28       PLP      /</pre>||Clobbers S; 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
68      PLA
A2 04    LDX #4
48      PHA
CA      DEX
68   ... PLA     × 2</pre>||Clobbers A, S, and Z&N
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
!colspan="2"|6 bytes
|<pre>EA  ... NOP      × 2
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>08      PHP
!colspan="2"|8 bytes
26 26    ROL $26
66 26    ROR $26
28      PLP</pre>||Writes in stack
|-
|-
|<pre>68      PLA
|<pre>48      PHA
48      PHA
18  ... CLC      × 2
26 26   ROL $26
A9 2A   LDA #$2A ;hides 'ROL A'
66 26   ROR $26</pre>||Clobbers A, and Z&N
90 FD   BCC *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>E6 xx    INC @zptemp
|<pre>08       PHP
36 36    ROL $36,X
18   ... CLC     × 2
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires @zptemp
A9 2A    LDA #$2A ;hides 'ROL A'
|-
90 FD    BCC *-1
|<pre>AA      TAX
28       PLP</pre>||Clobbers A
EA       NOP
68   ... PLA     × 2
48      PHA
8C      TXA</pre>||Clobbers X, S, and Z&N
|-
|<pre>A8      TAY
EA       NOP
68  ... PLA      × 2
48      PHA
98      TYA</pre>||Clobbers Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
C5 C5   CMP $C5
08      PHP
36 36   ROL $36,X
A2 04   LDX #4
76 36    ROR $36,X</pre>||Clobbers Z&N, and C
CA      DEX
D0 FD   BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
24 24   BIT $24
08      PHP
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
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>EA      NOP
!colspan="2"|9 bytes
A6 A6    LDX $A6
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
A4 A4   LDY $A4
48      PHA
36 36   ROL $36,X
18      CLC
76 36    ROR $36,X</pre>||Clobbers Y, and Z&N
A9 6A   LDA #$6A ;hides 'ROR A'
90 FD   BCC *-1
68      PLA
28      PLP</pre>||No requirements
|-
|-
|<pre>FE 00 02 INC $0200,X
|}
26 26    ROL $26
 
66 26    ROR $26</pre>||Clobbers Z&N; and requires writable $200-$2FF
 
=== 31 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|-
|<pre>FE 00 03 INC $0300,X
|<pre>18      CLC
26 26   ROL $26
A9 0A   LDA #$0A ;hides 'ASL A'
66 26   ROR $26</pre>||Clobbers Z&N; and requires writable $300-$3FF
90 FD   BCC *-1</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>FE 00 04 INC $0400,X
|<pre>A2 05    LDX #5
26 26    ROL $26
CA      DEX
66 26   ROR $26</pre>||Clobbers Z&N; and requires writable $400-$4FF
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>FE 00 05 INC $0500,X
|<pre>A0 06    LDY #6
26 26    ROL $26
88      DEY
66 26   ROR $26</pre>||Clobbers Z&N; and requires writable $500-$5FF
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>FE 00 06 INC $0600,X
!colspan="2"|6 bytes
26 26    ROL $26
66 26    ROR $26</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|-
|<pre>FE 00 07 INC $0700,X
|<pre>48      PHA
26 26   ROL $26
A9 0A   LDA #$0A ;hides 'ASL A'
66 26   ROR $26</pre>||Clobbers Z&N; and requires writable $700-$7FF
10 FD   BPL *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
04 04   NOP $04
A9 0A   LDA #$0A ;hides 'ASL A'
36 36   ROL $36,X
10 FD   BPL *-1
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires support for unofficial opcodes
28      PLP</pre>||Clobbers A
|-
|-
!colspan="2"|8 bytes
!colspan="2"|8 bytes
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
4C xx xx JMP *+3
28      PLP
36 36    ROL $36,X
20 xx xx JSR @rts12× 2</pre>||Requires @rts12
76 36    ROR $36,X</pre>||Clobbers Z&N; and not relocatable code
|-
|-
!colspan="2"|9 bytes
!colspan="2"|9 bytes
|-
|-
|<pre>18  ... CLC      × 7
|<pre>08      PHP
90 00   BCC *+2</pre>||Clobbers C
A6 A6   LDX $A6
A2 04    LDX #4
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>B8  ... CLV      × 7
|<pre>08      PHP
50 00   BVC *+2</pre>||Clobbers V
A4 A4   LDY $A4
|-
A0 04    LDY #4
|<pre>EA  ... NOP      × 7
88      DEY
85 xx   STA @zptemp</pre>||Requires @zptemp
D0 FD   BNE *-1
|-
28      PLP</pre>||Clobbers Y
|<pre>EA  ... NOP      × 7
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
|-
!colspan="2"|10 bytes
!colspan="2"|10 bytes
|-
|-
|<pre>EA  ... NOP      × 7
|<pre>08      PHP
4C xx xx JMP *+3</pre>||Not relocatable code
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
28      PLP</pre>||No requirements
|-
|-
|}
|}




=== 18 cycles ===
=== 32 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>E6 xx   INC @zptemp
|<pre>A2 05   LDX #5 ;hides 'ORA zp'
00 00   BRK 0</pre>||Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack
CA      DEX ;first loop only
CA      DEX
D0 FB   BNE *-3</pre>||Clobbers A, X, and Z&N
|-
|-
|<pre>48       PHA
|<pre>A0 05    LDY #5 ;hides 'ORA zp'
20 xx xx JSR @rts15</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
88       DEY ;first loop only
88      DEY
D0 FB    BNE *-3</pre>||Clobbers A, 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>A9 2A    LDA #$2A ;hides 'ROL A'
48      PHA
EA   ... NOP     × 3
00 00   BRK 0</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
10 FA   BPL *-4</pre>||Clobbers A, Z&N, and C
|-
|-
!colspan="2"|5 bytes
!colspan="2"|8 bytes
|-
|-
|<pre>F6 F6    INC $F6,X
|<pre>EA       NOP
20 xx xx JSR @rts12</pre>||Clobbers Z&N; requires @zptemp, @rts12, and writable $00-$FF; and writes in stack
98      TYA
|-
A0 05   LDY #5
|<pre>EA   ... NOP     × 2
88      DEY
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
D0 FD   BNE *-1
|-
A8      TAY</pre>||Clobbers A, and Z&N
|<pre>C5 C5   CMP $C5
20 xx xx JSR @rts15</pre>||Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack
|-
|<pre>24 24   BIT $24
20 xx xx JSR @rts15</pre>||Clobbers Z&N, and V; requires @rts12, and @rts15; and writes in stack
|-
|<pre>A5 A5    LDA $A5
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>A6 A6    LDX $A6
20 xx xx JSR @rts15</pre>||Clobbers X, and Z&N; requires @rts12, and @rts15; and writes in stack
A2 04    LDX #4
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|-
|<pre>A4 A4    LDY $A4
|<pre>A4 A4    LDY $A4
20 xx xx JSR @rts15</pre>||Clobbers Y, and Z&N; requires @rts12, and @rts15; and writes in stack
A0 04    LDY #4
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>85 xx    STA @zptemp
!colspan="2"|9 bytes
20 xx xx JSR @rts15</pre>||Requires @zptemp, @rts12, and @rts15; and writes in stack
|-
|-
|<pre>A9 00   LDA #0
|<pre>48      PHA
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
98      TYA
A0 04   LDY #4
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N
|-
|-
|<pre>04 04   NOP $04
|<pre>08      PHP
20 xx xx JSR @rts15</pre>||Requires @rts12, @rts15, and support for unofficial opcodes; and writes in stack
98      TYA
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A
|-
|-
|<pre>18       CLC
|<pre>EA  ... NOP      × 2
90 00   BCC *+2
08       PHP
00 00    BRK 0</pre>||Clobbers C; requires dummy interrupt handler; and writes in stack
A2 04   LDX #4
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>B8       CLV
|<pre>EA  ... NOP      × 2
50 00   BVC *+2
08       PHP
00 00    BRK 0</pre>||Clobbers V; requires dummy interrupt handler; and writes in stack
A0 04   LDY #4
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>EA      NOP
!colspan="2"|10 bytes
A5 A5    LDA $A5
00 00    BRK 0</pre>||Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
A6 A6    LDX $A6
48       PHA
00 00    BRK 0</pre>||Clobbers X, and Z&N; requires dummy interrupt handler; and writes in stack
18   ... CLC     × 2
|-
A9 6A    LDA #$6A ;hides 'ROR A'
|<pre>EA       NOP
90 FD    BCC *-1
A4 A4    LDY $A4
68      PLA
00 00    BRK 0</pre>||Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack
28      PLP</pre>||No requirements
|-
|<pre>EA      NOP
85 xx    STA @zptemp
00 00    BRK 0</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
04 04    NOP $04
00 00    BRK 0</pre>||Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
|<pre>EA      NOP
68   ... PLA     × 4</pre>||Clobbers A, S, and Z&N
|-
|<pre>48  ... PHA      × 2
20 xx xx JSR @rts12</pre>||Clobbers S; requires @rts12; and writes in stack
|-
|-
|}
=== 33 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>EA   ... NOP     × 2
|<pre>18   ... CLC     × 2
08      PHP      \ × 2
A9 0A    LDA #$0A ;hides 'ASL A'
28      PLP      /</pre>||Writes in stack
90 FD    BCC *-1</pre>||Clobbers A, Z&N, and C
|-
|<pre>EA  ... NOP      × 2
68      PLA      \ × 2
48      PHA      /</pre>||Clobbers A, and Z&N
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
A2 02   LDX #2
A2 05   LDX #5
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>EA      NOP
|<pre>EA      NOP
A0 03   LDY #3
A0 06   LDY #6
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>F6 F6... INC $F6,X× 3</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|-
!colspan="2"|7 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>EA  ... NOP      × 3
|<pre>48      PHA
36 36   ROL $36,X
18      CLC
76 36   ROR $36,X</pre>||Clobbers Z&N
A9 0A   LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|<pre>08      PHP
18      CLC
A9 0A   LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28      PLP</pre>||Clobbers A
|-
|<pre>08      PHP
A2 04    LDX #4
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X
|-
|<pre>08      PHP
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y
|-
|-
!colspan="2"|9 bytes
!colspan="2"|9 bytes
|-
|-
|<pre>EA   ... NOP     × 9</pre>||No requirements
|<pre>EA       NOP
08      PHP
28      PLP
20 xx xx JSR @rts12× 2</pre>||Requires @rts12
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP      \ × 2
28      PLP      /
08      PHP
36 36    ROL $36,X
76 36    ROR $36,X
28      PLP</pre>||No requirements
|-
|-
|}
|}




=== 19 cycles ===
=== 34 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>F6 F6   INC $F6,X
|<pre>A9 0A   LDA #$0A ;hides 'ASL A'
00 00   BRK 0</pre>||Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack
18      CLC
10 FC   BPL *-2</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>68       PLA
|<pre>A0 88    LDY #136 ;hides 'DEY'
20 xx xx JSR @rts15</pre>||Clobbers A, S, and Z&N; requires @rts12, and @rts15; and writes in stack
88       DEY
30 FC    BMI *-2</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>48  ... PHA      × 2
!colspan="2"|7 bytes
00 00    BRK 0</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
|-
!colspan="2"|5 bytes
|<pre>A6 A6    LDX $A6
A2 05    LDX #5
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>08      PHP
!colspan="2"|8 bytes
28      PLP
20 xx xx JSR @rts12</pre>||Requires @rts12; and writes in stack
|-
|-
|<pre>EA  ... NOP      × 3
|<pre>C5 C5   CMP $C5
00 00   BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
48      PHA
48      PHA
68   ... PLA     × 3</pre>||Clobbers A, S, and Z&N
A9 0A    LDA #$0A ;hides 'ASL A'
|-
10 FD    BPL *-1
!colspan="2"|6 bytes
68       PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>08      PHP
|<pre>08      PHP
36 36   ROL $36,X
A5 A5   LDA $A5
76 36   ROR $36,X
A9 0A   LDA #$0A ;hides 'ASL A'
28      PLP</pre>||Writes in stack
10 FD    BPL *-1
28      PLP</pre>||Clobbers A
|-
|-
|<pre>68      PLA
!colspan="2"|9 bytes
48      PHA
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers A, and Z&N
|-
|-
|<pre>AA       TAX
|<pre>08       PHP
68      PLA
48      PHA
48      PHA
68  ... PLA      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
8C       TXA</pre>||Clobbers X, S, and Z&N
38       SEC
|-
10 FC    BPL *-2
|<pre>A8      TAY
68      PLA
68      PLA
48       PHA
28       PLP</pre>||No requirements
68  ... PLA      × 2
98      TYA</pre>||Clobbers Y, S, and Z&N
|-
|-
!colspan="2"|7 bytes
|}
 
 
=== 35 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
|-
|-
|<pre>A6 A6   LDX $A6
|<pre>A9 2A   LDA #$2A ;hides 'ROL A'
A2 02    LDX #2
08      PHP
CA       DEX
28       PLP
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
10 FB   BPL *-3</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>A4 A4   LDY $A4
|<pre>A2 F8   LDX #248 ;hides 'SED'
A0 03    LDY #3
E8  ... INX      × 2
88      DEY
D0 FB   BNE *-3</pre>||Clobbers X, Z&N, and D
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>EA      NOP
|<pre>A0 88   LDY #136 ;hides 'DEY'
E6 xx   INC @zptemp
88  ... DEY      × 2
36 36    ROL $36,X
30 FB   BMI *-3</pre>||Clobbers Y, and Z&N
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires @zptemp
|-
|-
|<pre>FE 00 02 INC $0200,X
!colspan="2"|7 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>98      TYA
36 36   ROL $36,X
A0 06   LDY #6
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
88      DEY
D0 FD   BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>FE 00 04 INC $0400,X
|<pre>EA  ... NOP      × 2
36 36   ROL $36,X
A2 05   LDX #5
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
CA      DEX
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>FE 00 05 INC $0500,X
!colspan="2"|8 bytes
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
|<pre>48      PHA
36 36   ROL $36,X
38  ... SEC      × 2
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
A9 0A   LDA #$0A ;hides 'ASL A'
10 FD   BPL *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>FE 00 07 INC $0700,X
|<pre>08      PHP
36 36   ROL $36,X
38  ... SEC      × 2
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires writable $700-$7FF
A9 0A   LDA #$0A ;hides 'ASL A'
10 FD   BPL *-1
28      PLP</pre>||Clobbers A
|-
|-
!colspan="2"|8 bytes
|<pre>EA      NOP
08      PHP
A2 04    LDX #4
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>C5 C5    CMP $C5
|<pre>EA       NOP
EA   ... NOP     × 2
08      PHP
36 36    ROL $36,X
A0 05   LDY #5
76 36   ROR $36,X</pre>||Clobbers Z&N, and C
88      DEY
|-
D0 FD   BNE *-1
|<pre>24 24   BIT $24
28      PLP</pre>||Clobbers Y
EA  ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
EA  ... NOP      × 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
!colspan="2"|9 bytes
|-
|-
|<pre>4C xx xx JMP *+3
|<pre>08      PHP
EA  ... NOP      × 2
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
!colspan="2"|10 bytes
68      PLA
|-
28      PLP</pre>||No requirements
|<pre>18  ... CLC      × 8
90 00   BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 8
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 8
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 8
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      × 8
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}




=== 20 cycles ===
=== 36 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|4 bytes
|-
|<pre>08      PHP
28      PLP
00 00    BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|5 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>A9 2A   LDA #$2A ;hides 'ROL A'
|<pre>A9 E9   LDA #$E9 ;hides 'SBC #$2A'
18       CLC
2A       ROL A ;first loop only
10 FC    BPL *-2</pre>||Clobbers A, Z&N, and C
B0 FC    BCS *-2</pre>||Clobbers A, Z&N, C, and V
|-
|-
|<pre>E6 xx   INC @zptemp
|<pre>A2 07   LDX #7
20 xx xx JSR @rts15</pre>||Clobbers Z&N; requires @zptemp, @rts12, and @rts15; and writes in stack
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>F6 F6   INC $F6,X
|<pre>A0 06   LDY #6
20 xx xx JSR @rts14</pre>||Clobbers Z&N; requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>68  ... PLA      × 5</pre>||Clobbers A, S, and Z&N
!colspan="2"|6 bytes
|-
|-
|<pre>48  ... PHA      × 2
|<pre>38      SEC
20 xx xx JSR @rts14</pre>||Clobbers S; requires @rts12, and @rts14; and writes in stack
A9 0A    LDA #$0A ;hides 'ASL A'
|-
38       SEC
|<pre>EA       NOP
10 FC    BPL *-2</pre>||Clobbers A, Z&N, and C
48      PHA
20 xx xx JSR @rts15</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
|-
|-
!colspan="2"|6 bytes
!colspan="2"|8 bytes
|-
|-
|<pre>BA       TSX
|<pre>48       PHA
68   ... PLA     × 4
18      CLC
9A      TXS</pre>||Clobbers A, X, and Z&N; and unsafe for interrupts
A9 2A    LDA #$2A ;hides 'ROL A'
EA      NOP
90 FC    BCC *-2
68       PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>08      PHP
|<pre>08      PHP
48       PHA
18       CLC
F6 F6   INC $F6,X
A9 2A   LDA #$2A ;hides 'ROL A'
68       PLA
EA       NOP
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
90 FC    BCC *-2
28      PLP</pre>||Clobbers A
|-
|-
|<pre>F6 F6   INC $F6,X
|<pre>08      PHP
68       PLA       \ × 2
A2 04   LDX #4
48       PHA      /</pre>||Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP</pre>||Clobbers X
|-
|-
|<pre>EA   ... NOP     × 3
|<pre>08      PHP
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
A0 04    LDY #4
EA       NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>18      CLC
!colspan="2"|9 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>20 xx xx JSR @rts12× 3</pre>||Requires @rts12
50 00    BVC *+2
20 xx xx JSR @rts15</pre>||Clobbers V; requires @rts12, and @rts15; and writes in stack
|-
|-
|<pre>EA      NOP
!colspan="2"|10 bytes
A5 A5    LDA $A5
20 xx xx JSR @rts15</pre>||Clobbers A, and Z&N; requires @rts12, and @rts15; and writes in stack
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
A6 A6   LDX $A6
48      PHA
20 xx xx JSR @rts15</pre>||Clobbers X, and Z&N; requires @rts12, and @rts15; and writes in stack
18      CLC
A9 2A   LDA #$2A ;hides 'ROL A'
38      SEC
10 FC    BPL *-2
68      PLA
28      PLP</pre>||No requirements
|-
|-
|<pre>EA      NOP
|}
A4 A4    LDY $A4
 
20 xx xx JSR @rts15</pre>||Clobbers Y, and Z&N; requires @rts12, and @rts15; and writes in stack
 
=== 37 cycles ===
{| class="wikitable testtable"
!colspan="2"|7 bytes
|-
|-
|<pre>EA       NOP
|<pre>A5 A5    LDA $A5
85 xx   STA @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15</pre>||Requires @zptemp, @rts12, and @rts15; and writes in stack
18       CLC
10 FC   BPL *-2</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>EA      NOP
|<pre>A2 04    LDX #4
04 04   NOP $04
EA   ... NOP      × 2
20 xx xx JSR @rts15</pre>||Requires @rts12, @rts15, and support for unofficial opcodes; and writes in stack
CA       DEX
D0 FB   BNE *-3</pre>||Clobbers X, and Z&N
|-
|-
|<pre>48   ... PHA     × 2
|<pre>A0 04    LDY #4
08      PHP       \ × 2
EA   ... NOP     × 2
28      PLP      /</pre>||Clobbers S; and writes in stack
88       DEY
D0 FB    BNE *-3</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>AA      TAX
!colspan="2"|8 bytes
68  ... PLA      × 4
8C      TXA</pre>||Clobbers X, S, and Z&N
|-
|-
|<pre>A8       TAY
|<pre>EA       NOP
68  ... PLA      × 4
98      TYA
98      TYA</pre>||Clobbers Y, S, and Z&N
A0 06    LDY #6
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
!colspan="2"|7 bytes
!colspan="2"|9 bytes
|-
|-
|<pre>EA  ... NOP      × 3
|<pre>48      PHA
08       PHP       \ × 2
98       TYA
28       PLP       /</pre>||Writes in stack
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA</pre>||Clobbers Z&N
|-
|-
|<pre>98      TYA
|<pre>08      PHP
A0 03   LDY #3
98      TYA
A0 05   LDY #5
88      DEY
88      DEY
D0 FD    BNE *-1
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
A8      TAY
28      PLP</pre>||Clobbers A
|-
|-
|<pre>EA  ... NOP      × 2
|<pre>EA  ... NOP      × 2
A2 02   LDX #2
08      PHP
A2 04   LDX #4
CA      DEX
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
10 FD    BPL *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA  ... NOP      × 2
|<pre>EA  ... NOP      × 2
A0 03   LDY #3
08      PHP
A0 05   LDY #5
88      DEY
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
D0 FD    BNE *-1
|-
28       PLP</pre>||Clobbers Y
|<pre>EA       NOP
F6 F6... INC $F6,X× 3</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
!colspan="2"|8 bytes
|-
|<pre>26 26    ROL $26  \ × 2
66 26    ROR $26  /</pre>||Clobbers Z&N
|-
|-
!colspan="2"|10 bytes
!colspan="2"|10 bytes
|-
|-
|<pre>EA   ... NOP     × 10</pre>||No requirements
|<pre>08      PHP
48      PHA
18   ... CLC     × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68      PLA
28      PLP</pre>||No requirements
|-
|-
|}
|}




=== 21 cycles ===
=== 38 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>68  ... PLA      × 2
|<pre>38      SEC
00 00   BRK 0</pre>||Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
A9 69    LDA #$69 ;hides 'ADC #$EA'
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>18       CLC
|<pre>EA       NOP
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</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>A2 03    LDX #3
!colspan="2"|7 bytes
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>A0 04   LDY #4
|<pre>48      PHA
88      DEY
18      CLC
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
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
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
28      PLP</pre>||Clobbers A
|-
|-
|<pre>F6 F6   INC $F6,X
|<pre>08      PHP
20 xx xx JSR @rts15</pre>||Clobbers Z&N; requires @zptemp, @rts12, @rts15, and writable $00-$FF; 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
F6 F6   INC $F6,X
A0 06   LDY #6
00 00   BRK 0</pre>||Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack
88      DEY
D0 FD   BNE *-1
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>48  ... PHA      × 2
!colspan="2"|8 bytes
20 xx xx JSR @rts15</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
48   ... PHA     × 2
48       PHA
00 00   BRK 0</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
A9 0A   LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA
28      PLP</pre>||No requirements
|-
|-
!colspan="2"|6 bytes
|}
 
 
=== 39 cycles ===
{| class="wikitable testtable"
!colspan="2"|4 bytes
|-
|-
|<pre>08      PHP      \ × 3
|<pre>A9 4A    LDA #$4A ;hides 'LSR A'
28      PLP      /</pre>||Writes in stack
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>68      PLA      \ × 3
!colspan="2"|7 bytes
48      PHA      /</pre>||Clobbers A, and Z&N
|-
|-
!colspan="2"|8 bytes
|<pre>A6 A6    LDX $A6
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA  ... NOP      × 2
|<pre>A4 A4    LDY $A4
E6 xx   INC @zptemp
A0 06   LDY #6
36 36    ROL $36,X
88      DEY
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires @zptemp
10 FD   BPL *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>EA      NOP
!colspan="2"|8 bytes
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
|-
|-
|<pre>EA       NOP
|<pre>98       TYA
FE 00 03 INC $0300,X
A0 88    LDY #136 ;hides 'DEY'
36 36   ROL $36,X
88  ... DEY      × 2
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
30 FB   BMI *-3
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
FE 00 04 INC $0400,X
A2 05    LDX #5 ;hides 'ORA zp'
36 36   ROL $36,X
CA      DEX ;first loop only
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
CA      DEX
D0 FB   BNE *-3
28      PLP</pre>||Clobbers A, and X
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
FE 00 05 INC $0500,X
A0 05    LDY #5 ;hides 'ORA zp'
36 36   ROL $36,X
88      DEY ;first loop only
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
88       DEY
|-
D0 FB   BNE *-3
|<pre>EA       NOP
28       PLP</pre>||Clobbers A, and Y
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
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>48      PHA
A9 2A   LDA #$2A ;hides 'ROL A'
EA  ... NOP      × 3
EA  ... NOP      × 3
36 36   ROL $36,X
10 FA   BPL *-4
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
A9 2A   LDA #$2A ;hides 'ROL A'
EA  ... NOP      × 3
EA  ... NOP      × 3
36 36   ROL $36,X
10 FA   BPL *-4
76 36    ROR $36,X</pre>||Clobbers Z&N, and V
28      PLP</pre>||Clobbers A
|-
|<pre>04 04    NOP $04
EA  ... NOP      × 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>EA       NOP
EA   ... NOP     × 3
48      PHA
36 36   ROL $36,X
98      TYA
76 36   ROR $36,X</pre>||Clobbers Z&N; and not relocatable code
A0 05   LDY #5
88      DEY
D0 FD   BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N
|-
|-
!colspan="2"|11 bytes
|<pre>08      PHP
A6 A6    LDX $A6
A2 04    LDX #4
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X
|-
|-
|<pre>18  ... CLC      × 9
|<pre>08      PHP
90 00   BCC *+2</pre>||Clobbers C
A4 A4   LDY $A4
A0 04    LDY #4
EA      NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>B8  ... CLV      × 9
!colspan="2"|11 bytes
50 00    BVC *+2</pre>||Clobbers V
|-
|-
|<pre>EA  ... NOP      × 9
|<pre>08      PHP
85 xx    STA @zptemp</pre>||Requires @zptemp
48      PHA
|-
98      TYA
|<pre>EA  ... NOP      × 9
A0 04    LDY #4
04 04    NOP $04</pre>||Requires support for unofficial opcodes
88      DEY
|-
D0 FD    BNE *-1
!colspan="2"|12 bytes
A8      TAY
|-
68      PLA
|<pre>EA  ... NOP      × 9
28      PLP</pre>||No requirements
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}




=== 22 cycles ===
=== 40 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>08      PHP
28      PLP
20 xx xx JSR @rts15</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>EA      NOP
08      PHP
28      PLP
00 00    BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>68  ... PLA      × 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
!colspan="2"|6 bytes
|-
|-
|<pre>18      CLC
|<pre>A2 05   LDX #5 ;hides 'ORA zp'
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>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"|7 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
|<pre>98       TYA
68  ... PLA      × 5</pre>||Clobbers A, S, and Z&N
A0 06    LDY #6
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>48      PHA
|<pre>EA  ... NOP      × 2
08      PHP
A2 07    LDX #7
28       PLP
CA       DEX
20 xx xx JSR @rts12</pre>||Clobbers S; requires @rts12; and writes in stack
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
!colspan="2"|7 bytes
|<pre>EA  ... NOP      × 2
A0 06    LDY #6
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>08       PHP
!colspan="2"|8 bytes
BA       TSX
|-
08      PHP
|<pre>48       PHA
28   ... PLP     × 2
18  ... CLC      × 2
9A      TXS
A9 0A    LDA #$0A ;hides 'ASL A'
28      PLP</pre>||Clobbers X; and writes in stack
90 FD    BCC *-1
68       PLA</pre>||Clobbers Z&N, and C
|-
|<pre>08      PHP
18   ... CLC     × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
28      PLP</pre>||Clobbers A
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
08      PHP
08      PHP
48       PHA
A2 05    LDX #5
F6 F6   INC $F6,X
CA       DEX
68      PLA
10 FD   BPL *-1
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
F6 F6    INC $F6,X
68      PLA      \ × 2
48      PHA      /</pre>||Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>08      PHP
C5 C5    CMP $C5
28      PLP
20 xx xx JSR @rts12</pre>||Requires @rts12; and writes in stack
|-
|<pre>48      PHA
08      PHP
08      PHP
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
28      PLP</pre>||Clobbers Y
|-
|-
!colspan="2"|8 bytes
!colspan="2"|9 bytes
|-
|-
|<pre>08      PHP
|<pre>08      PHP
24 24    BIT $24
48      PHA
36 36    ROL $36,X
18       CLC
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      × 11</pre>||No requirements
|-
|-
|}
|}




=== 23 cycles ===
=== 41 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|5 bytes
!colspan="2"|5 bytes
|-
|-
|<pre>A9 2A   LDA #$2A ;hides 'ROL A'
|<pre>38      SEC
48      PHA
A9 4A   LDA #$4A ;hides 'LSR A'
10 FC   BPL *-2</pre>||Clobbers A, S, Z&N, and C; and writes in stack
D0 FD   BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>68  ... PLA      × 2
|<pre>A2 08    LDX #8
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
|<pre>A0 08    LDY #8
08       PHP
88       DEY
28       PLP
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
00 00   BRK 0</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
|-
!colspan="2"|6 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>18  ... CLC      × 2
|<pre>48      PHA
A9 2A   LDA #$2A ;hides 'ROL A'
A9 0A   LDA #$0A ;hides 'ASL A'
90 FD   BCC *-1</pre>||Clobbers A, Z&N, and C
18      CLC
10 FC   BPL *-2
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
A2 03   LDX #3
A9 0A   LDA #$0A ;hides 'ASL A'
CA       DEX
18       CLC
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
10 FC   BPL *-2
28      PLP</pre>||Clobbers A
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
A0 04   LDY #4
A0 88   LDY #136 ;hides 'DEY'
88      DEY
88      DEY
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
30 FC   BMI *-2
28      PLP</pre>||Clobbers Y
|-
!colspan="2"|9 bytes
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
08       PHP
A6 A6    LDX $A6
28      PLP
A2 05    LDX #5
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
CA       DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA      NOP
!colspan="2"|10 bytes
F6 F6    INC $F6,X
20 xx xx JSR @rts15</pre>||Clobbers Z&N; requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack
|-
|-
|<pre>08      PHP
|<pre>08      PHP
C5 C5   CMP $C5
48      PHA
28      PLP
A5 A5   LDA $A5
00 00    BRK 0</pre>||Requires dummy interrupt handler; and writes in stack
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68      PLA
28      PLP</pre>||No requirements
|-
|-
|<pre>68      PLA
|}
48      PHA
 
68  ... PLA      × 4</pre>||Clobbers A, S, and Z&N
 
=== 42 cycles ===
{| class="wikitable testtable"
!colspan="2"|6 bytes
|-
|-
|<pre>EA      NOP
|<pre>A5 A5    LDA $A5
48  ... PHA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
20 xx xx JSR @rts15</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|-
!colspan="2"|7 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
08       PHP       \ × 3
A2 05    LDX #5 ;hides 'ORA zp'
28      PLP      /</pre>||Writes in stack
EA       NOP
CA       DEX
D0 FB    BNE *-3</pre>||Clobbers A, X, and Z&N
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
68       PLA       \ × 3
A0 05    LDY #5 ;hides 'ORA zp'
48      PHA      /</pre>||Clobbers A, and Z&N
EA       NOP
88       DEY
D0 FB    BNE *-3</pre>||Clobbers A, Y, and Z&N
|-
|-
!colspan="2"|8 bytes
!colspan="2"|8 bytes
|-
|-
|<pre>E6 xx   INC @zptemp
|<pre>48      PHA
F6 F6... INC $F6,X× 3</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
A9 2A   LDA #$2A ;hides 'ROL A'
08      PHP
28      PLP
10 FB    BPL *-3
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
!colspan="2"|9 bytes
|<pre>08      PHP
|-
A9 2A   LDA #$2A ;hides 'ROL A'
|<pre>E6 xx   INC @zptemp
08      PHP
EA  ... NOP      × 3
28      PLP
36 36   ROL $36,X
10 FB   BPL *-3
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires @zptemp
28      PLP</pre>||Clobbers A
|-
|-
|<pre>EA   ... NOP     × 2
|<pre>08      PHP
FE 00 02 INC $0200,X
A2 F8    LDX #248 ;hides 'SED'
36 36   ROL $36,X
E8   ... INX     × 2
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $200-$2FF
D0 FB   BNE *-3
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA   ... NOP     × 2
|<pre>08      PHP
FE 00 03 INC $0300,X
A0 88    LDY #136 ;hides 'DEY'
36 36   ROL $36,X
88   ... DEY     × 2
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $300-$3FF
30 FB   BMI *-3
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>EA  ... NOP      × 2
!colspan="2"|9 bytes
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|-
|<pre>EA  ... NOP      × 2
|<pre>48      PHA
FE 00 05 INC $0500,X
98      TYA
36 36    ROL $36,X
A0 06   LDY #6
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
88      DEY
|-
D0 FD   BNE *-1
|<pre>EA  ... NOP      × 2
A8      TAY
FE 00 06 INC $0600,X
68      PLA</pre>||Clobbers Z&N
36 36   ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      × 2
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
!colspan="2"|10 bytes
|-
|-
|<pre>C5 C5    CMP $C5
|<pre>08      PHP
26 26    ROL $26  \ × 2
48      PHA
66 26    ROR $26  /</pre>||Clobbers Z&N, and C
38   ... SEC     × 2
|-
A9 0A   LDA #$0A ;hides 'ASL A'
|<pre>24 24    BIT $24
10 FD   BPL *-1
26 26    ROL $26  \ × 2
68      PLA
66 26    ROR $26  /</pre>||Clobbers Z&N, and V
28      PLP</pre>||No requirements
|-
|<pre>04 04    NOP $04
26 26    ROL $26  \ × 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|11 bytes
|-
|<pre>4C xx xx JMP *+3
26 26    ROL $26  \ × 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|12 bytes
|-
|<pre>18   ... CLC     × 10
90 00   BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 10
50 00   BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 10
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 10
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|13 bytes
|-
|<pre>EA  ... NOP      × 10
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}




=== 24 cycles ===
=== 43 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>A9 0A   LDA #$0A ;hides 'ASL A'
|<pre>38  ... SEC      × 2
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
A9 4A   LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|-
!colspan="2"|5 bytes
|<pre>A2 05    LDX #5
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|-
|<pre>48       PHA
|<pre>A0 06    LDY #6
68  ... PLA      × 2
EA       NOP
00 00   BRK 0</pre>||Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
88      DEY
D0 FC   BNE *-2</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|6 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>20 xx xx JSR @rts12× 2</pre>||Requires @rts12; and writes in stack
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers Z&N, C, and V
|-
|-
|<pre>EA  ... NOP      × 2
|<pre>08      PHP
08      PHP
A9 E9    LDA #$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      × 6</pre>||Clobbers A, S, and Z&N
|<pre>08       PHP
|-
A2 07   LDX #7
|<pre>48       PHA
A2 03   LDX #3
CA      DEX
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>48       PHA
|<pre>08       PHP
A0 04   LDY #4
A0 06   LDY #6
88      DEY
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y
|-
|-
!colspan="2"|7 bytes
!colspan="2"|8 bytes
|-
|<pre>A6 A6    LDX $A6
A2 03    LDX #3
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 04    LDY #4
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>48      PHA
|<pre>48      PHA
08       PHP       \ × 3
38       SEC
28       PLP      /</pre>||Clobbers S; and writes in stack
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
68       PLA</pre>||Clobbers Z&N, and C
|-
|-
!colspan="2"|8 bytes
!colspan="2"|10 bytes
|-
|-
|<pre>08      PHP
|<pre>08      PHP
48      PHA
48      PHA
26 26   ROL $26
18      CLC
66 26   ROR $26
A9 2A   LDA #$2A ;hides 'ROL A'
EA      NOP
90 FC   BCC *-2
68      PLA
68      PLA
28      PLP</pre>||Writes in stack
28      PLP</pre>||No requirements
|-
|<pre>36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      × 12</pre>||No requirements
|-
|-
|}
|}




=== 25 cycles ===
=== 44 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|5 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>20 xx xx JSR @rts12
|<pre>A9 0A    LDA #$0A ;hides 'ASL A'
00 00   BRK 0</pre>||Requires dummy interrupt handler, and @rts12; and writes in stack
EA  ... NOP      × 2
10 FB   BPL *-3</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>68  ... PLA      × 3
|<pre>A0 88    LDY #136 ;hides 'DEY'
00 00   BRK 0</pre>||Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
EA      NOP
88      DEY
30 FB   BMI *-3</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|6 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>36 36   ROL $36,X
|<pre>A6 A6   LDX $A6
76 36   ROR $36,X
A2 08   LDX #8
00 00   BRK 0</pre>||Clobbers Z&N; requires dummy interrupt handler; and writes in stack
CA      DEX
D0 FD   BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>08      PHP
!colspan="2"|9 bytes
E6 xx    INC @zptemp
28      PLP
00 00    BRK 0</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|-
|<pre>68       PLA
|<pre>C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18      CLC
18      CLC
A9 2A   LDA #$2A ;hides 'ROL A'
10 FC   BPL *-2
90 FD    BCC *-1</pre>||Clobbers A, S, Z&N, and C
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>A2 02   LDX #2
|<pre>08      PHP
48       PHA
A5 A5    LDA $A5
CA      DEX
A9 0A   LDA #$0A ;hides 'ASL A'
10 FC    BPL *-2</pre>||Clobbers X, S, and Z&N; and writes in stack
18       CLC
10 FC    BPL *-2
28      PLP</pre>||Clobbers A
|-
|-
|<pre>68       PLA
|<pre>08       PHP
A2 03   LDX #3
A2 04   LDX #4
EA  ... NOP      × 2
CA      DEX
CA      DEX
10 FD   BPL *-1</pre>||Clobbers A, X, S, and Z&N
D0 FB   BNE *-3
28      PLP</pre>||Clobbers X
|-
|-
|<pre>A0 03    LDY #3
|<pre>08       PHP
48       PHA
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>68      PLA
A0 04    LDY #4
A0 04    LDY #4
EA  ... NOP      × 2
88      DEY
88      DEY
D0 FD   BNE *-1</pre>||Clobbers A, Y, S, and Z&N
D0 FB   BNE *-3
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>48      PHA
!colspan="2"|10 bytes
08      PHP
28      PLP
20 xx xx JSR @rts15</pre>||Clobbers S; requires @rts12, and @rts15; and writes in stack
|-
|-
|<pre>48       PHA
|<pre>EA       NOP
68  ... PLA      × 2
48       PHA
20 xx xx JSR @rts14</pre>||Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack
98      TYA
|-
A0 06   LDY #6
|<pre>48   ... PHA     × 4
00 00    BRK 0</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 04   LDY #4
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      × 2
!colspan="2"|11 bytes
A2 03   LDX #3
|-
|<pre>08      PHP
48      PHA
98      TYA
A0 05    LDY #5
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||No requirements
|-
|}
 
 
=== 45 cycles ===
{| class="wikitable testtable"
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 08    LDY #8
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 2
A2 08   LDX #8
CA      DEX
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA  ... NOP      × 2
|<pre>EA  ... NOP      × 2
A0 04   LDY #4
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
!colspan="2"|8 bytes
08      PHP
F6 F6    INC $F6,X
28      PLP</pre>||Requires @zptemp, @rts12, and writable $00-$FF; and writes in stack
|-
|<pre>EA  ... NOP      × 2
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 00   LDA #0
38      SEC
20 xx xx JSR delay_256a_16_clocks
A9 69   LDA #$69 ;hides 'ADC #$EA'
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack
EA      NOP ;first loop only
B0 FC    BCS *-2
68      PLA</pre>||Clobbers Z&N, C, and V
|-
|-
|<pre>08      PHP
|<pre>08      PHP
A9 00   LDA #0
38      SEC
20 xx xx JSR delay_256a_16_clocks
A9 69   LDA #$69 ;hides 'ADC #$EA'
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack
EA      NOP ;first loop only
B0 FC    BCS *-2
28      PLP</pre>||Clobbers A
|-
|-
|<pre>EA      NOP
|<pre>EA      NOP
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      × 2
|<pre>EA      NOP
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
!colspan="2"|8 bytes
28      PLP</pre>||Clobbers Y
|-
|<pre>EA  ... NOP      × 2
08      PHP      \ × 3
28      PLP       /</pre>||Writes in stack
|-
|-
!colspan="2"|9 bytes
!colspan="2"|9 bytes
|-
|-
|<pre>EA       NOP
|<pre>08       PHP
E6 xx   INC @zptemp
48      PHA
F6 F6... INC $F6,X× 3</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
18      CLC
|-
A9 0A   LDA #$0A ;hides 'ASL A'
|<pre>85 xx    STA @zptemp
90 FD    BCC *-1
68      PLA
68      PLA
48       PHA
28       PLP</pre>||No requirements
68  ... PLA      × 3
A5 xx    LDA @zptemp</pre>||Clobbers S, and Z&N; and requires @zptemp
|-
|-
!colspan="2"|10 bytes
|}
 
 
=== 46 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|-
|<pre>C5 C5   CMP $C5
|<pre>A2 08   LDX #8
26 26    ROL $26
CA      DEX
66 26    ROR $26
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
36 36    ROL $36,X
76 36   ROR $36,X</pre>||Clobbers Z&N, and C
|-
|-
|<pre>24 24   BIT $24
|<pre>A0 09   LDY #9
26 26    ROL $26
88      DEY
66 26    ROR $26
D0 FD   BNE *-1</pre>||Clobbers Y, and Z&N
36 36   ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N, and V
|-
|-
|<pre>E6 xx    INC @zptemp
!colspan="2"|6 bytes
26 26    ROL $26  \ × 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires @zptemp
|-
|-
|<pre>EA  ... NOP      × 3
|<pre>48      PHA
FE 00 02 INC $0200,X
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 requires writable $200-$2FF
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>EA  ... NOP      × 3
|<pre>08      PHP
FE 00 03 INC $0300,X
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 requires writable $300-$3FF
28      PLP</pre>||Clobbers A
|-
|-
|<pre>EA  ... NOP      × 3
!colspan="2"|9 bytes
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|-
|<pre>EA  ... NOP      × 3
|<pre>08      PHP
FE 00 05 INC $0500,X
A6 A6    LDX $A6
36 36   ROL $36,X
A2 07   LDX #7
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires writable $500-$5FF
CA      DEX
D0 FD   BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA  ... NOP      × 3
|<pre>08      PHP
FE 00 06 INC $0600,X
A4 A4    LDY $A4
36 36   ROL $36,X
A0 06   LDY #6
76 36   ROR $36,X</pre>||Clobbers Z&N; and requires writable $600-$6FF
88      DEY
10 FD   BPL *-1
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>EA  ... NOP      × 3
!colspan="2"|10 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
|-
|-
|<pre>04 04   NOP $04
|<pre>48      PHA
26 26    ROL $26
98      TYA
66 26   ROR $26
A0 88   LDY #136 ;hides 'DEY'
36 36    ROL $36,X
88  ... DEY      × 2
76 36    ROR $36,X</pre>||Clobbers Z&N; and requires support for unofficial opcodes
30 FB   BMI *-3
A8      TAY
68      PLA</pre>||Clobbers Z&N
|-
|-
!colspan="2"|11 bytes
!colspan="2"|11 bytes
|-
|-
|<pre>4C xx xx JMP *+3
|<pre>08      PHP
26 26    ROL $26
48      PHA
66 26   ROR $26
A9 2A   LDA #$2A ;hides 'ROL A'
36 36    ROL $36,X
EA  ... NOP      × 3
76 36    ROR $36,X</pre>||Clobbers Z&N; and not relocatable code
10 FA   BPL *-4
|-
68      PLA
!colspan="2"|13 bytes
28      PLP</pre>||No requirements
|-
|<pre>18  ... CLC      × 11
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 11
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 11
85 xx   STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 11
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|14 bytes
|-
|<pre>EA  ... NOP      × 11
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}




=== 26 cycles ===
=== 47 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|4 bytes
!colspan="2"|8 bytes
|-
|-
|<pre>00 00... BRK 0   × 2</pre>||Requires dummy interrupt handler; and writes in stack
|<pre>98      TYA
A0 06   LDY #6
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
!colspan="2"|5 bytes
|<pre>EA  ... NOP      × 3
A2 08    LDX #8
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>18       CLC
|<pre>08       PHP
A9 0A   LDA #$0A ;hides 'ASL A'
A2 05   LDX #5 ;hides 'ORA zp'
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
EA      NOP
|-
|<pre>A2 04    LDX #4
CA      DEX
CA      DEX
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
D0 FB   BNE *-3
28      PLP</pre>||Clobbers A, and X
|-
|-
|<pre>A0 04   LDY #4
|<pre>EA  ... NOP      × 3
A0 08   LDY #8
88      DEY
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|-
!colspan="2"|6 bytes
|<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
|-
|-
|<pre>20 xx xx JSR @rts12
!colspan="2"|9 bytes
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|-
|<pre>48      PHA
|<pre>48      PHA
68   ... PLA     × 2
98      TYA
20 xx xx JSR @rts15</pre>||Clobbers A, S, and Z&N; requires @rts12, and @rts15; and writes in stack
A0 06    LDY #6
88      DEY
10 FD    BPL *-1
A8      TAY
68       PLA</pre>||Clobbers Z&N
|-
|-
!colspan="2"|7 bytes
|<pre>08      PHP
|-
98      TYA
|<pre>EA      NOP
A0 06    LDY #6
20 xx xx JSR @rts12× 2</pre>||Requires @rts12; and writes in stack
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A
|-
|<pre>EA   ... NOP      × 2
08       PHP
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>EA       NOP
|<pre>EA  ... NOP     × 2
68   ... PLA     × 6</pre>||Clobbers A, S, and Z&N
08      PHP
A0 06    LDY #6
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y
|-
|-
!colspan="2"|8 bytes
!colspan="2"|10 bytes
|-
|-
|<pre>08      PHP
|<pre>08      PHP
48      PHA
48      PHA
36 36   ROL $36,X
18  ... CLC      × 2
76 36   ROR $36,X
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>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 \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|13 bytes
|-
|<pre>EA  ... NOP      × 13</pre>||No requirements
|-
|-
|}
|}




=== 27 cycles ===
=== 48 cycles ===
{| class="wikitable testtable"
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 00    LDA #0
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>00 00    BRK 0
20 xx xx JSR @rts14</pre>||Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack
|-
|<pre>48      PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
!colspan="2"|6 bytes
!colspan="2"|6 bytes
|-
|-
|<pre>A5 A5    LDA $A5
|<pre>EA      NOP
A9 0A   LDA #$0A ;hides 'ASL A'
A2 08   LDX #8
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>20 xx xx JSR @rts12
|<pre>EA      NOP
20 xx xx JSR @rts15</pre>||Requires @rts12, and @rts15; and writes in stack
A0 09   LDY #9
|-
88       DEY
|<pre>00 00   BRK 0
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
08      PHP       \ × 2
28      PLP      /</pre>||Requires dummy interrupt handler; and writes in stack
|-
|-
!colspan="2"|7 bytes
!colspan="2"|7 bytes
|-
|-
|<pre>48      PHA
|<pre>48      PHA
A9 2A   LDA #$2A ;hides 'ROL A'
38      SEC
18      CLC
A9 4A   LDA #$4A ;hides 'LSR A'
10 FC   BPL *-2
D0 FD   BNE *-1
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>08      PHP
|<pre>08      PHP
A9 2A   LDA #$2A ;hides 'ROL A'
38      SEC
18      CLC
A9 4A   LDA #$4A ;hides 'LSR A'
10 FC   BPL *-2
D0 FD   BNE *-1
28      PLP</pre>||Clobbers A; and writes in stack
28      PLP</pre>||Clobbers A
|-
|-
|<pre>C5 CD    CMP <$CD ;hides 'CMP $03A2'
|<pre>08      PHP
A2 03   LDX #3
A2 08   LDX #8
CA      DEX
CA      DEX
D0 FA   BNE *-4</pre>||Clobbers X, Z&N, and C
D0 FD   BNE *-1
28      PLP</pre>||Clobbers X
|-
|-
|<pre>24 2C    BIT <$2C ;hides 'BIT $03A2'
|<pre>08       PHP
A2 03    LDX #3
A0 08   LDY #8
CA      DEX
D0 FA    BNE *-4</pre>||Clobbers X, Z&N, and V
|-
|<pre>A5 AD    LDA <$AD ;hides 'LDA $02A2'
A2 02    LDX #2
CA       DEX
10 FA    BPL *-4</pre>||Clobbers A, X, and Z&N
|-
|<pre>C5 CD    CMP <$CD ;hides 'CMP $03A0'
A0 03   LDY #3
88      DEY
88      DEY
D0 FA   BNE *-4</pre>||Clobbers Y, Z&N, and C
D0 FD   BNE *-1
28      PLP</pre>||Clobbers Y
|-
|-
|<pre>24 2C    BIT <$2C ;hides 'BIT $02A0'
!colspan="2"|9 bytes
A0 02    LDY #2
88      DEY
10 FA    BPL *-4</pre>||Clobbers Y, Z&N, and V
|-
|-
|<pre>A5 AD   LDA <$AD ;hides 'LDA $7DA0'
|<pre>08      PHP
A0 7D    LDY #125
48      PHA
C8       INY
A9 0A   LDA #$0A ;hides 'ASL A'
10 FA   BPL *-4</pre>||Clobbers A, Y, and Z&N
18       CLC
10 FC   BPL *-2
68      PLA
28      PLP</pre>||No requirements
|-
|-
|<pre>A4 AC    LDY <$AC ;hides 'LDY $02A2'
|}
A2 02    LDX #2
 
CA      DEX
 
10 FA    BPL *-4</pre>||Clobbers X, Y, and Z&N
=== 49 cycles ===
{| class="wikitable testtable"
!colspan="2"|4 bytes
|-
|-
|<pre>A2 04   LDX #4
|<pre>A0 88   LDY #136 ;hides 'DEY'
CA      DEX
30 FD    BMI *-1</pre>||Clobbers Y, and Z&N
D0 FD    BNE *-1
F6 xx    INC @zptemp,X</pre>||Clobbers X, and Z&N; and requires @zptemp
|-
|-
|<pre>F6 F6    INC $F6,X
!colspan="2"|7 bytes
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>18       CLC
F6 F6   INC $F6,X
A9 2A   LDA #$2A ;hides 'ROL A'
08      PHP
28      PLP
28      PLP
20 xx xx JSR @rts14</pre>||Requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack
90 FB    BCC *-3</pre>||Clobbers A, Z&N, and C
|-
|-
|<pre>04 0C   NOP <$0C ;hides 'NOP $82A2'
|<pre>A6 A6   LDX $A6
A2 82   LDX #130
A2 08   LDX #8
CA      DEX
CA      DEX
30 FA   BMI *-4</pre>||Clobbers X, and Z&N; and requires support for unofficial opcodes
10 FD   BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>04 0C    NOP <$0C ;hides 'NOP $03A0'
!colspan="2"|8 bytes
A0 03    LDY #3
88      DEY
D0 FA    BNE *-4</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
|-
|-
|<pre>68      PLA
|<pre>C5 C5    CMP $C5
48      PHA
48      PHA
68   ... PLA     × 5</pre>||Clobbers A, S, and Z&N
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>48   ... PHA     × 2
|<pre>08      PHP
A2 03   LDX #3
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A
|-
!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>||No requirements
|-
|}
 
 
=== 50 cycles ===
{| class="wikitable testtable"
!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
CA      DEX
10 FD   BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
D0 FC   BNE *-2</pre>||Clobbers X, and Z&N
|-
|-
|<pre>48  ... PHA      × 2
|<pre>A0 06   LDY #6
A0 04   LDY #4
EA      NOP
88      DEY
88      DEY
D0 FD   BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
10 FC   BPL *-2</pre>||Clobbers Y, and Z&N
|-
|-
|<pre>48      PHA
!colspan="2"|7 bytes
20 xx xx JSR @rts12× 2</pre>||Clobbers S; requires @rts12; and writes in stack
|-
|-
!colspan="2"|8 bytes
|<pre>98      TYA
|-
A0 09   LDY #9
|<pre>EA      NOP
98      TYA
A0 04   LDY #4
88      DEY
88      DEY
D0 FD    BNE *-1
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
A8      TAY</pre>||Clobbers A, and Z&N
|-
|-
|<pre>EA  ... NOP      × 3
!colspan="2"|8 bytes
A2 03    LDX #3
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|-
|<pre>EA   ... NOP     × 3
|<pre>48      PHA
A0 04   LDY #4
38   ... SEC     × 2
88      DEY
A9 4A   LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
D0 FD    BNE *-1
68      PLA</pre>||Clobbers Z&N, and C
|-
|-
|<pre>08      PHP
|<pre>08      PHP
F6 F6   INC $F6,X
38  ... SEC      × 2
28      PLP      \ × 2
A9 4A   LDA #$4A ;hides 'LSR A'
08      PHP      /
D0 FD    BNE *-1
28      PLP</pre>||Requires @zptemp, and writable $00-$FF; and writes in stack
28      PLP</pre>||Clobbers A
|-
|-
|<pre>24 24    BIT $24
|<pre>08      PHP
20 xx xx JSR @rts12× 2</pre>||Clobbers Z&N, and V; requires @rts12; and writes in stack
A2 05    LDX #5
|-
EA       NOP
|<pre>20 xx xx JSR @rts12
CA       DEX
08      PHP
10 FC    BPL *-2
BA       TSX
28      PLP</pre>||Clobbers X
28       PLP
9A      TXS
28      PLP</pre>||Clobbers X; requires @rts12; and writes in stack
|-
|-
|<pre>85 xx   STA @zptemp
|<pre>08      PHP
20 xx xx JSR @rts12× 2</pre>||Requires @zptemp, and @rts12; and writes in stack
A0 06   LDY #6
|-
EA       NOP
|<pre>EA   ... NOP     × 3
88       DEY
08      PHP
D0 FC   BNE *-2
28       PLP
28      PLP</pre>||Clobbers Y
20 xx xx JSR @rts14</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>04 04   NOP $04
20 xx xx JSR @rts12× 2</pre>||Requires @rts12, and support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      × 2
08      PHP      \ × 3
28      PLP       /</pre>||Clobbers S; and writes in stack
|-
|-
!colspan="2"|9 bytes
!colspan="2"|9 bytes
Line 2,313: Line 2,188:
|<pre>08      PHP
|<pre>08      PHP
48      PHA
48      PHA
A9 6A   LDA #$6A ;hides 'ROR A'
A9 E9   LDA #$E9 ;hides 'SBC #$2A'
38       SEC
2A       ROL A ;first loop only
10 FC    BPL *-2
B0 FC    BCS *-2
68      PLA
68      PLA
28      PLP</pre>||Writes in stack
28      PLP</pre>||No requirements
|-
|<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 \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ × 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 \ × 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  \ × 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  \ × 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  \ × 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  \ × 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  \ × 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  \ × 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|14 bytes
|-
|<pre>18  ... CLC      × 12
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 12
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 12
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 12
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|15 bytes
|-
|<pre>EA  ... NOP      × 12
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|-
|}
|}




=== 28 cycles ===
== Sanity checks ==
{| class="wikitable testtable"
 
!colspan="2"|5 bytes
It is possible to verify on compile time that no page wrap occurs,
|-
by replacing all branches with these macros:
|<pre>A9 01    LDA #1
<pre>.macro branch_check opc, dest
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
    opc dest
|-
    .assert >* = >(dest), warning, "branch_check: failed, crosses page"
|<pre>EA      NOP
.endmacro
00 00... BRK 0    × 2</pre>||Requires dummy interrupt handler; and writes in stack
.macro bccnw dest
|-
        branch_check bcc, dest
|<pre>68      PLA
.endmacro
A9 0A    LDA #$0A ;hides 'ASL A'
.macro bcsnw dest
10 FD    BPL *-1</pre>||Clobbers A, S, Z&N, and C
        branch_check bcs, dest
|-
.endmacro
!colspan="2"|6 bytes
.macro beqnw dest
|-
        branch_check beq, dest
|<pre>18  ... CLC      × 2
.endmacro
A9 0A    LDA #$0A ;hides 'ASL A'
.macro bnenw dest
10 FD    BPL *-1</pre>||Clobbers A, Z&N, and C
        branch_check bne, dest
|-
.endmacro
|<pre>EA      NOP
.macro bminw dest
A2 04    LDX #4
        branch_check bmi, dest
CA      DEX
.endmacro
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
.macro bplnw dest
|-
        branch_check bpl, dest
|<pre>EA      NOP
.endmacro
A0 04    LDY #4
.macro bvcnw dest
88      DEY
        branch_check bvc, dest
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
.endmacro
|-
.macro bvsnw dest
|<pre>20 xx xx JSR @rts14× 2</pre>||Requires @rts12, and @rts14; and writes in stack
        branch_check bvs, dest
|-
.endmacro</pre>
!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 03    LDX #3
CA      DEX
10 FD    BPL *-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      × 7</pre>||Clobbers A, S, and Z&N
|-
|<pre>48  ... PHA      × 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      \ × 4
28      PLP      /</pre>||Writes in stack
|-
|<pre>68      PLA      \ × 4
48      PHA      /</pre>||Clobbers A, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>EA  ... NOP      × 2
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|14 bytes
|-
|<pre>EA  ... NOP      × 14</pre>||No requirements
|-
|}
 
 
=== 29 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 02    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    × 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 03    LDX #3
EA      NOP
CA      DEX
10 FC    BPL *-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    × 2</pre>||Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>24 24    BIT $24
00 00... BRK 0    × 2</pre>||Clobbers Z&N, and V; requires dummy interrupt handler; and writes in stack
|-
|<pre>A5 A5    LDA $A5
00 00... BRK 0    × 2</pre>||Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack
|-
|<pre>85 xx    STA @zptemp
00 00... BRK 0    × 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    × 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      \ × 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× 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× 2</pre>||Clobbers S; requires @rts12; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      × 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      \ × 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 \ × 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 \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 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 \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|15 bytes
|-
|<pre>18  ... CLC      × 13
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 13
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 13
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 13
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|16 bytes
|-
|<pre>EA  ... NOP      × 13
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 30 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 03    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    × 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× 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>EA  ... NOP      × 2
00 00... BRK 0    × 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 04    LDY #4
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 04    LDY #4
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 2
A2 04    LDX #4
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 04    LDY #4
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>EA      NOP
20 xx xx JSR @rts14× 2</pre>||Requires @rts12, and @rts14; and writes in stack
|-
!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; and writes in stack
|-
|<pre>08      PHP
18  ... CLC      × 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 03    LDX #3
CA      DEX
10 FD    BPL *-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× 2</pre>||Clobbers Z&N; requires @zptemp, @rts12, and writable $00-$FF; and writes in stack
|-
|<pre>48  ... PHA      × 2
20 xx xx JSR @rts12× 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× 5</pre>||Clobbers Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>85 xx    STA @zptemp
68  ... PLA      × 6
A5 xx    LDA @zptemp</pre>||Clobbers S, and Z&N; and requires @zptemp
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|15 bytes
|-
|<pre>EA  ... NOP      × 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 05    LDX #5
CA      DEX
10 FD    BPL *-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    × 2</pre>||Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
48      PHA
00 00... BRK 0    × 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    × 2</pre>||Clobbers C; requires dummy interrupt handler; and writes in stack
|-
|<pre>B8      CLV
50 00    BVC *+2
00 00... BRK 0    × 2</pre>||Clobbers V; requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
85 xx    STA @zptemp
00 00... BRK 0    × 2</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>EA  ... NOP      × 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    × 2</pre>||Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
|-
|<pre>48      PHA
20 xx xx JSR @rts14× 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× 2</pre>||Requires @rts12; and writes in stack
|-
|<pre>EA  ... NOP      × 2
00 00    BRK 0
08      PHP      \ × 2
28      PLP      /</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
48      PHA
68  ... PLA      × 6</pre>||Clobbers A, S, and Z&N
|-
|<pre>48      PHA
08      PHP
A2 03    LDX #3
CA      DEX
10 FD    BPL *-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>98      TYA
24 2C    BIT <$2C ;hides 'BIT $02A0'
A0 02    LDY #2
88      DEY
10 FA    BPL *-4
A8      TAY</pre>||Clobbers A, Z&N, and V
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 03    LDX #3
CA      DEX
10 FD    BPL *-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
04 0C    NOP <$0C ;hides 'NOP $03A0'
A0 03    LDY #3
88      DEY
D0 FA    BNE *-4
A8      TAY</pre>||Clobbers A, and Z&N; and requires support for unofficial opcodes
|-
|<pre>48      PHA
08      PHP      \ × 4
28      PLP      /</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
28      PLP</pre>||Writes in stack
|-
|<pre>68      PLA
48      PHA
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      × 2
C5 C5    CMP $C5
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA  ... NOP      × 2
24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      × 2
04 04    NOP $04
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|13 bytes
|-
|<pre>EA  ... NOP      × 2
4C xx xx JMP *+3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|16 bytes
|-
|<pre>18  ... CLC      × 14
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 14
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 14
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 14
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|17 bytes
|-
|<pre>EA  ... NOP      × 14
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 32 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 05    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    × 2</pre>||Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack
|-
|<pre>68  ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1</pre>||Clobbers A, S, Z&N, and C
|-
|<pre>48  ... PHA      × 2
00 00... BRK 0    × 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      × 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 04    LDY #4
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>EA      NOP
20 xx xx JSR @rts15× 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>AA      TAX
A9 01    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 01    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 7A    LDX #122 ;hides 'NOP'
EA      NOP
E8  ... INX      × 2
10 FA    BPL *-4</pre>||Clobbers X, and Z&N; and requires support for unofficial opcodes
|-
|<pre>A0 FA    LDY #250 ;hides 'NOP'
EA      NOP
C8  ... INY      × 2
D0 FA    BNE *-4</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
|-
|<pre>EA  ... NOP      × 3
00 00... BRK 0    × 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      × 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      × 2
A0 04    LDY #4
88      DEY
10 FD    BPL *-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× 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 04    LDY #4
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>A6 A6    LDX $A6
A2 03    LDX #3
EA      NOP
CA      DEX
10 FC    BPL *-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      × 2
20 xx xx JSR @rts14× 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 04    LDY #4
88      DEY
10 FD    BPL *-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 00    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      × 2
20 xx xx JSR @rts12× 2</pre>||Clobbers S; requires @rts12; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
18  ... CLC      × 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  \ × 2
66 26    ROR $26  /</pre>||Clobbers Z&N
|-
!colspan="2"|16 bytes
|-
|<pre>EA  ... NOP      × 16</pre>||No requirements
|-
|}
 
 
=== 33 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 06    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      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1</pre>||Clobbers A, Z&N, and C
|-
|<pre>EA      NOP
A2 05    LDX #5
CA      DEX
10 FD    BPL *-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    × 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 04    LDY #4
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
20 xx xx JSR @rts15× 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× 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× 2</pre>||Requires @zptemp, @rts12, and @rts15; and writes in stack
|-
|<pre>04 04    NOP $04
20 xx xx JSR @rts15× 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× 2</pre>||Requires @rts12; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP      \ × 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>84 xx    STY @zptemp
24 2C    BIT <$2C ;hides 'BIT $02A0'
A0 02    LDY #2
88      DEY
10 FA    BPL *-4
A4 xx    LDY @zptemp</pre>||Clobbers Z&N, and V; and requires @zptemp
|-
|<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
04 0C    NOP <$0C ;hides 'NOP $03A0'
A0 03    LDY #3
88      DEY
D0 FA    BNE *-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      × 5
A5 xx    LDA @zptemp</pre>||Clobbers S, and Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      × 2
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
EA  ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
EA  ... NOP      × 3
36 36    ROL $36,X \ × 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      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|17 bytes
|-
|<pre>18  ... CLC      × 15
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 15
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 15
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 15
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|18 bytes
|-
|<pre>EA  ... NOP      × 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 05    LDX #5
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>68  ... PLA      × 2
00 00... BRK 0    × 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 05    LDX #5
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>48      PHA
A9 00    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 00    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    × 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      × 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      × 2
00 00... BRK 0    × 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      × 2
20 xx xx JSR @rts15× 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>F6 F6    INC $F6,X
20 xx xx JSR @rts14× 2</pre>||Clobbers Z&N; requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack
|-
|<pre>EA  ... NOP      × 4
00 00... BRK 0    × 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 04    LDY #4
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
|<pre>48  ... PHA      × 2
20 xx xx JSR @rts14× 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      × 2
98      TYA
A0 04    LDY #4
88      DEY
10 FD    BPL *-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 04    LDY #4
88      DEY
10 FD    BPL *-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 \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|17 bytes
|-
|<pre>EA  ... NOP      × 17</pre>||No requirements
|-
|}
 
 
=== 35 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 08    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      × 2
D0 FB    BNE *-3</pre>||Clobbers X, Z&N, and D
|-
|<pre>A0 88    LDY #136 ;hides 'DEY'
88  ... DEY      × 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 05    LDX #5
CA      DEX
10 FD    BPL *-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      × 2
A2 05    LDX #5
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>48      PHA
A9 01    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 01    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    × 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
18  ... CLC      × 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      × 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 04    LDY #4
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
28      PLP
20 xx xx JSR @rts14× 2</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>E6 xx    INC @zptemp
20 xx xx JSR @rts15× 2</pre>||Clobbers Z&N; requires @zptemp, @rts12, and @rts15; and writes in stack
|-
|<pre>EA      NOP
48      PHA
20 xx xx JSR @rts15× 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      × 2
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA  ... NOP      × 2
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA  ... NOP      × 2
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA  ... NOP      × 2
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA  ... NOP      × 2
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      × 2
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 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  \ × 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  \ × 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  \ × 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  \ × 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|18 bytes
|-
|<pre>18  ... CLC      × 16
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 16
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 16
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 16
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|19 bytes
|-
|<pre>EA  ... NOP      × 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 06    LDX #6
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 06    LDY #6
88      DEY
10 FD    BPL *-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 02    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 02    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    × 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 03    LDX #3
EA      NOP
CA      DEX
10 FC    BPL *-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× 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    × 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      × 2
20 xx xx JSR @rts15× 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× 3</pre>||Requires @rts12; and writes in stack
|-
|<pre>98      TYA
A0 FA    LDY #250 ;hides 'NOP'
EA      NOP
C8  ... INY      × 2
D0 FA    BNE *-4
A8      TAY</pre>||Clobbers A, and Z&N; and requires support for unofficial opcodes
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 04    LDY #4
88      DEY
10 FD    BPL *-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      × 2
84 xx    STY @zptemp
A0 04    LDY #4
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|12 bytes
|-
|<pre>36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|18 bytes
|-
|<pre>EA  ... NOP      × 18</pre>||No requirements
|-
|}
 
 
=== 37 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 0A    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 03    LDX #3
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'
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 03    LDX #3
EA  ... NOP      × 2
CA      DEX
10 FB    BPL *-3</pre>||Clobbers X, and Z&N
|-
|<pre>A0 04    LDY #4
EA  ... NOP      × 2
88      DEY
D0 FB    BNE *-3</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 03    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 03    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× 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>EA  ... NOP      × 2
08      PHP
28      PLP
00 00... BRK 0    × 2</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      × 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      × 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 04    LDY #4
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 04    LDY #4
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 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      × 2
08      PHP
A0 04    LDY #4
88      DEY
10 FD    BPL *-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× 2</pre>||Requires @rts12, and @rts14; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
18  ... CLC      × 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 \ × 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 \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      × 3
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA  ... NOP      × 3
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA  ... NOP      × 3
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA  ... NOP      × 3
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA  ... NOP      × 3
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      × 3
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 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 \ × 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 \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|19 bytes
|-
|<pre>18  ... CLC      × 17
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 17
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 17
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 17
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|20 bytes
|-
|<pre>EA  ... NOP      × 17
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 38 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 0B    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 06    LDX #6
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 06    LDY #6
88      DEY
10 FD    BPL *-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 05    LDX #5
CA      DEX
10 FD    BPL *-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    × 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      × 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      × 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 04    LDY #4
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 FA    LDY #250 ;hides 'NOP'
EA      NOP
C8  ... INY      × 2
D0 FA    BNE *-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 03    LDX #3
EA      NOP
CA      DEX
10 FC    BPL *-2
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|13 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|19 bytes
|-
|<pre>EA  ... NOP      × 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    × 3</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
A2 06    LDX #6
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 06    LDY #6
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 06    LDX #6
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 06    LDY #6
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 05    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 05    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      × 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      × 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      × 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 04    LDY #4
88      DEY
10 FD    BPL *-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× 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>08      PHP
AA      TAX
A9 01    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 01    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 7A    LDX #122 ;hides 'NOP'
EA      NOP
E8  ... INX      × 2
10 FA    BPL *-4
28      PLP</pre>||Clobbers X; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
A0 FA    LDY #250 ;hides 'NOP'
EA      NOP
C8  ... INY      × 2
D0 FA    BNE *-4
28      PLP</pre>||Clobbers Y; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      × 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      × 2
08      PHP
A0 04    LDY #4
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 04    LDY #4
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 03    LDX #3
EA      NOP
CA      DEX
10 FC    BPL *-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      × 2
08      PHP
28      PLP
20 xx xx JSR @rts14× 2</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>48      PHA
20 xx xx JSR @rts12× 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 \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ × 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 \ × 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  \ × 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  \ × 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  \ × 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  \ × 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  \ × 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  \ × 2
66 26    ROR $26  /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|20 bytes
|-
|<pre>18  ... CLC      × 18
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 18
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 18
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 18
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|21 bytes
|-
|<pre>EA  ... NOP      × 18
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 40 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 0D    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 06    LDY #6
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 2
A2 06    LDX #6
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 06    LDY #6
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 06    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 06    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    × 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      × 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      × 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 05    LDX #5
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
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>00 00... BRK 0    × 2
08      PHP      \ × 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      × 2
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|20 bytes
|-
|<pre>EA  ... NOP      × 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 07    LDX #7
CA      DEX
10 FD    BPL *-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    × 3</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
08      PHP
A2 05    LDX #5
CA      DEX
10 FD    BPL *-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      × 2
88      DEY
D0 FB    BNE *-3
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 05    LDX #5
CA      DEX
10 FD    BPL *-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 00    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      × 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 \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|21 bytes
|-
|<pre>18  ... CLC      × 19
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 19
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 19
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 19
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|22 bytes
|-
|<pre>EA  ... NOP      × 19
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 42 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 0F    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 06    LDY #6
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9 08    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 08    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      × 2
A2 06    LDX #6
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48  ... PHA      × 2
A0 06    LDY #6
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
00 00... BRK 0    × 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 06    LDY #6
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 F8    LDX #248 ;hides 'SED'
E8  ... INX      × 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      × 3
A2 06    LDX #6
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>08      PHP
A0 88    LDY #136 ;hides 'DEY'
88  ... DEY      × 2
30 FB    BMI *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>EA  ... NOP      × 3
A0 06    LDY #6
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>24 24    BIT $24
00 00... BRK 0    × 3</pre>||Clobbers Z&N, and V; requires dummy interrupt handler; and writes in stack
|-
|<pre>85 xx    STA @zptemp
00 00... BRK 0    × 3</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
00 00... BRK 0    × 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    × 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 06    LDY #6
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>20 xx xx JSR @rts14× 3</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>20 xx xx JSR @rts12
20 xx xx JSR @rts15× 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 01    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    × 2
08      PHP      \ × 2
28      PLP      /</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
18  ... CLC      × 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      × 3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|21 bytes
|-
|<pre>EA  ... NOP      × 21</pre>||No requirements
|-
|}
 
 
=== 43 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 10    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      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1</pre>||Clobbers A, Z&N, and C
|-
|<pre>A2 05    LDX #5
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 05    LDY #5
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$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 06    LDX #6
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 06    LDY #6
88      DEY
10 FD    BPL *-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      × 2
00 00... BRK 0    × 3</pre>||Requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 06    LDY #6
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>20 xx xx JSR @rts15
20 xx xx JSR @rts14× 2</pre>||Requires @rts12, @rts14, and @rts15; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 02    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      × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|16 bytes
|-
|<pre>EA  ... NOP      × 2
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA  ... NOP      × 2
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      × 2
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|17 bytes
|-
|<pre>EA  ... NOP      × 2
4C xx xx JMP *+3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|22 bytes
|-
|<pre>18  ... CLC      × 20
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 20
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 20
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 20
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|23 bytes
|-
|<pre>EA  ... NOP      × 20
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 44 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 11    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      × 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 07    LDX #7
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>A6 A6    LDX $A6
A2 07    LDX #7
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>48      PHA
A9 0A    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 0A    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    × 3</pre>||Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      × 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 06    LDY #6
88      DEY
10 FD    BPL *-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    × 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      × 2
98      TYA
A0 06    LDY #6
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 03    LDX #3
EA  ... NOP      × 2
CA      DEX
10 FB    BPL *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 04    LDY #4
EA  ... NOP      × 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× 2</pre>||Requires @rts12, @rts14, and @rts15; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 03    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    × 3</pre>||Clobbers C; requires dummy interrupt handler; and writes in stack
|-
|<pre>B8      CLV
50 00    BVC *+2
00 00... BRK 0    × 3</pre>||Clobbers V; requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
85 xx    STA @zptemp
00 00... BRK 0    × 3</pre>||Requires @zptemp, and dummy interrupt handler; and writes in stack
|-
|<pre>EA  ... NOP      × 2
00 00... BRK 0    × 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    × 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 06    LDY #6
88      DEY
10 FD    BPL *-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× 3</pre>||Requires @rts12, and @rts14; and writes in stack
|-
|<pre>EA      NOP
20 xx xx JSR @rts12
20 xx xx JSR @rts15× 2</pre>||Requires @rts12, and @rts15; and writes in stack
|-
|<pre>EA  ... NOP      × 2
00 00... BRK 0    × 2
08      PHP      \ × 2
28      PLP      /</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      × 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 04    LDY #4
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|16 bytes
|-
|<pre>26 26    ROL $26  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|22 bytes
|-
|<pre>EA  ... NOP      × 22</pre>||No requirements
|-
|}
 
 
=== 45 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 12    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 07    LDX #7
CA      DEX
10 FD    BPL *-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      × 2
A2 07    LDX #7
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 07    LDY #7
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 0B    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 0B    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 06    LDX #6
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 06    LDY #6
88      DEY
10 FD    BPL *-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    × 3</pre>||Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack
|-
|<pre>48  ... PHA      × 2
00 00... BRK 0    × 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 06    LDX #6
CA      DEX
10 FD    BPL *-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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|17 bytes
|-
|<pre>EA  ... NOP      × 3
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA  ... NOP      × 3
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      × 3
04 04    NOP $04
36 36    ROL $36,X \ × 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  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|23 bytes
|-
|<pre>18  ... CLC      × 21
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 21
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 21
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 21
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|24 bytes
|-
|<pre>EA  ... NOP      × 21
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 46 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 09    LDX #9
CA      DEX
D0 FD    BNE *-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 13    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    × 3</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 06    LDX #6
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 06    LDY #6
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 06    LDX #6
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 06    LDY #6
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>8C      TXA
A2 07    LDX #7
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 05    LDA #5
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 06    LDY #6
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
88  ... DEY      × 2
30 FB    BMI *-3
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      × 3
98      TYA
A0 06    LDY #6
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA      NOP
20 xx xx JSR @rts14
20 xx xx JSR @rts15× 2</pre>||Requires @rts12, @rts14, and @rts15; and writes in stack
|-
|<pre>85 xx    STA @zptemp
68      PLA
A9 E9    LDA #$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      × 3
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA  ... NOP      × 2
84 xx    STY @zptemp
A0 06    LDY #6
88      DEY
10 FD    BPL *-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 \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|23 bytes
|-
|<pre>EA  ... NOP      × 23</pre>||No requirements
|-
|}
 
 
=== 47 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 14    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      × 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 0D    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 0D    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      × 2
A2 07    LDX #7
CA      DEX
10 FD    BPL *-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 07    LDX #7
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48  ... PHA      × 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      × 3
A2 07    LDX #7
CA      DEX
10 FD    BPL *-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      × 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 06    LDY #6
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 06    LDY #6
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 2
08      PHP
A2 06    LDX #6
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      × 2
08      PHP
A0 06    LDY #6
88      DEY
10 FD    BPL *-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 06    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    × 2
20 xx xx JSR @rts14</pre>||Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack
|-
|<pre>EA      NOP
48  ... PHA      × 2
00 00... BRK 0    × 3</pre>||Clobbers S; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
18  ... CLC      × 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      × 2
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA  ... NOP      × 2
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA  ... NOP      × 2
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA  ... NOP      × 2
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA  ... NOP      × 2
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      × 2
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 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  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
26 26    ROL $26  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
26 26    ROL $26  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 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  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|24 bytes
|-
|<pre>18  ... CLC      × 22
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 22
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 22
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 22
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|25 bytes
|-
|<pre>EA  ... NOP      × 22
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 48 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 15    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 09    LDX #9
CA      DEX
D0 FD    BNE *-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 07    LDX #7
CA      DEX
10 FD    BPL *-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 06    LDY #6
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      × 3
84 xx    STY @zptemp
A0 06    LDY #6
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|16 bytes
|-
|<pre>36 36    ROL $36,X \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|24 bytes
|-
|<pre>EA  ... NOP      × 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 16    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 05    LDX #5
48      PHA
CA      DEX
10 FC    BPL *-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 09    LDX #9
CA      DEX
D0 FD    BNE *-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 0F    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 0F    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      × 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      × 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      × 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 06    LDY #6
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 08    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      × 2
08      PHP
A2 06    LDX #6
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      × 2
08      PHP
A0 06    LDY #6
88      DEY
10 FD    BPL *-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    × 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 \ × 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 \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      × 3
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA  ... NOP      × 3
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA  ... NOP      × 3
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA  ... NOP      × 3
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA  ... NOP      × 3
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      × 3
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 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 \ × 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 \ × 3
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|20 bytes
|-
|<pre>EA  ... NOP      × 2
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|25 bytes
|-
|<pre>18  ... CLC      × 23
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 23
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 23
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 23
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|26 bytes
|-
|<pre>EA  ... NOP      × 23
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 50 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 17    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 06    LDX #6
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 06    LDY #6
EA      NOP
88      DEY
10 FC    BPL *-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 10    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 10    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      × 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      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 05    LDX #5
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 05    LDY #5
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$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 \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|25 bytes
|-
|<pre>EA  ... NOP      × 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 09    LDY #9
88      DEY
10 FD    BPL *-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 11    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 11    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      × 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      × 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      × 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 07    LDX #7
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 07    LDX #7
CA      DEX
10 FD    BPL *-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 0A    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    × 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      × 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      × 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 \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ × 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 \ × 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  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 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  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 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  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 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  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 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  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 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  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|21 bytes
|-
|<pre>EA  ... NOP      × 3
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|26 bytes
|-
|<pre>18  ... CLC      × 24
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 24
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 24
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 24
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|27 bytes
|-
|<pre>EA  ... NOP      × 24
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 52 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 19    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 06    LDX #6
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>48      PHA
A9 12    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 12    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    × 4</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      × 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      × 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      × 2
08      PHP
A2 07    LDX #7
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      × 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 0B    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      × 2
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|26 bytes
|-
|<pre>EA  ... NOP      × 26</pre>||No requirements
|-
|}
 
 
=== 53 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 1A    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 09    LDY #9
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>08      PHP
A2 09    LDX #9
CA      DEX
D0 FD    BNE *-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 13    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 13    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      × 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      × 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 \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|22 bytes
|-
|<pre>EA  ... NOP      × 4
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|27 bytes
|-
|<pre>18  ... CLC      × 25
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 25
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 25
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 25
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|28 bytes
|-
|<pre>EA  ... NOP      × 25
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 54 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 1B    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      × 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 09    LDY #9
88      DEY
10 FD    BPL *-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      × 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 09    LDY #9
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 14    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 14    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 06    LDY #6
EA      NOP
88      DEY
10 FC    BPL *-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 0D    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    × 4</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
48  ... PHA      × 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      × 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      × 2
08      PHP
A2 07    LDX #7
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      × 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      × 3
08      PHP
A2 07    LDX #7
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      × 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 06    LDY #6
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|18 bytes
|-
|<pre>36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|27 bytes
|-
|<pre>EA  ... NOP      × 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 05    LDX #5
68      PLA
CA      DEX
10 FC    BPL *-2</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48  ... PHA      × 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 09    LDY #9
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>A2 05    LDX #5
EA  ... NOP      × 2
CA      DEX
10 FB    BPL *-3</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 09    LDY #9
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 15    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 15    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 09    LDX #9
CA      DEX
D0 FD    BNE *-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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|20 bytes
|-
|<pre>EA  ... NOP      × 2
C5 C5    CMP $C5
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA  ... NOP      × 2
24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      × 2
04 04    NOP $04
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|21 bytes
|-
|<pre>EA  ... NOP      × 2
4C xx xx JMP *+3
36 36    ROL $36,X \ × 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  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|28 bytes
|-
|<pre>18  ... CLC      × 26
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 26
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 26
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 26
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|29 bytes
|-
|<pre>EA  ... NOP      × 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 0A    LDY #10
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 1D    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 16    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 16    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 09    LDX #9
CA      DEX
D0 FD    BNE *-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 05    LDX #5
24 24    BIT $24
CA      DEX
10 FB    BPL *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 0F    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 06    LDY #6
EA      NOP
88      DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
!colspan="2"|19 bytes
|-
|<pre>EA      NOP
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|28 bytes
|-
|<pre>EA  ... NOP      × 28</pre>||No requirements
|-
|}
 
 
=== 57 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 1E    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 #$2A ;hides 'ROL A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, and C
|-
|<pre>A2 07    LDX #7
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 07    LDY #7
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 17    LDA #23
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9 17    LDA #23
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$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 09    LDY #9
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 06    LDX #6
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 06    LDY #6
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 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 09    LDY #9
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 10    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      × 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× 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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× 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× 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  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|29 bytes
|-
|<pre>18  ... CLC      × 27
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 27
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 27
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 27
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|30 bytes
|-
|<pre>EA  ... NOP      × 27
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 58 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 1F    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 0A    LDY #10
88      DEY
10 FD    BPL *-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 09    LDY #9
88      DEY
10 FD    BPL *-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 09    LDY #9
88      DEY
10 FD    BPL *-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 11    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      × 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 \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|29 bytes
|-
|<pre>EA  ... NOP      × 29</pre>||No requirements
|-
|}
 
 
=== 59 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 20    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 0A    LDY #10
88      DEY
10 FD    BPL *-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      × 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 0A    LDY #10
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 19    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 19    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 09    LDY #9
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 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>EA  ... NOP      × 2
98      TYA
A0 09    LDY #9
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA      NOP
08      PHP
A2 06    LDX #6
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 12    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 09    LDY #9
88      DEY
10 FD    BPL *-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    × 4</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      × 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× 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA  ... NOP      × 2
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA  ... NOP      × 2
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA  ... NOP      × 2
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA  ... NOP      × 2
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA  ... NOP      × 2
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA  ... NOP      × 2
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 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× 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× 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  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|30 bytes
|-
|<pre>18  ... CLC      × 28
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 28
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 28
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 28
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|31 bytes
|-
|<pre>EA  ... NOP      × 28
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 60 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 21    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 0A    LDY #10
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 2
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 1A    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 1A    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 09    LDY #9
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 13    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 \ × 5
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|30 bytes
|-
|<pre>EA  ... NOP      × 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 22    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 1B    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 1B    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 #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 07    LDY #7
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
E6 xx    INC @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28      PLP</pre>||Clobbers Y; requires @zptemp; and writes in stack
|-
|<pre>48  ... PHA      × 2
A9 E9    LDA #$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 09    LDY #9
88      DEY
10 FD    BPL *-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      × 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      × 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 09    LDY #9
88      DEY
10 FD    BPL *-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 14    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 06    LDY #6
EA      NOP
88      DEY
10 FC    BPL *-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>EA  ... NOP      × 2
84 xx    STY @zptemp
A0 09    LDY #9
88      DEY
10 FD    BPL *-1
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    × 4</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>EA      NOP
48  ... PHA      × 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× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36... ROL $36,X× 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 \ × 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 \ × 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 \ × 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 \ × 4
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|24 bytes
|-
|<pre>EA  ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|31 bytes
|-
|<pre>18  ... CLC      × 29
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 29
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 29
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 29
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|32 bytes
|-
|<pre>EA  ... NOP      × 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 23    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 #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, and C
|-
|<pre>08      PHP
A2 F8    LDX #248 ;hides 'SED'
E8      INX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>C9 CD    CMP #<$CD ;hides 'CMP $06A2'
A2 06    LDX #6
CA      DEX
10 FA    BPL *-4</pre>||Clobbers X, Z&N, and C
|-
|<pre>A2 2C    LDX #<$2C ;hides 'BIT $06A2'
A2 06    LDX #6
CA      DEX
10 FA    BPL *-4</pre>||Clobbers X, Z&N, and V
|-
|<pre>A9 AD    LDA #<$AD ;hides 'LDA $79A2'
A2 79    LDX #121
E8      INX
10 FA    BPL *-4</pre>||Clobbers A, X, and Z&N
|-
|<pre>08      PHP
A0 F8    LDY #248 ;hides 'SED'
C8      INY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>C9 CD    CMP #<$CD ;hides 'CMP $07A0'
A0 07    LDY #7
88      DEY
D0 FA    BNE *-4</pre>||Clobbers Y, Z&N, and C
|-
|<pre>A0 2C    LDY #<$2C ;hides 'BIT $86A0'
A0 86    LDY #134
88      DEY
30 FA    BMI *-4</pre>||Clobbers Y, Z&N, and V
|-
|<pre>A9 AD    LDA #<$AD ;hides 'LDA $86A0'
A0 86    LDY #134
88      DEY
30 FA    BMI *-4</pre>||Clobbers A, Y, and Z&N
|-
|<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>A2 8D    LDX #<$8D ;hides 'STA $06A2'
A2 06    LDX #6
CA      DEX
10 FA    BPL *-4</pre>||Clobbers X, and Z&N; and requires writable $600-$6FF
|-
|<pre>A2 8D    LDX #<$8D ;hides 'STA $07A2'
A2 07    LDX #7
CA      DEX
D0 FA    BNE *-4</pre>||Clobbers X, and Z&N; and requires writable $700-$7FF
|-
|<pre>A0 8D    LDY #<$8D ;hides 'STA $06A0'
A0 06    LDY #6
88      DEY
10 FA    BPL *-4</pre>||Clobbers Y, and Z&N; and requires writable $600-$6FF
|-
|<pre>A0 8D    LDY #<$8D ;hides 'STA $07A0'
A0 07    LDY #7
88      DEY
D0 FA    BNE *-4</pre>||Clobbers Y, and Z&N; and requires writable $700-$7FF
|-
|<pre>F6 F6    INC $F6,X
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>80 0C    NOP #<$0C ;hides 'NOP $07A2'
A2 07    LDX #7
CA      DEX
D0 FA    BNE *-4</pre>||Clobbers X, and Z&N; and requires support for unofficial opcodes
|-
|<pre>80 0C    NOP #<$0C ;hides 'NOP $07A0'
A0 07    LDY #7
88      DEY
D0 FA    BNE *-4</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 3
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 3
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 09    LDY #9
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
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 15    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 \ × 5
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|31 bytes
|-
|<pre>EA  ... NOP      × 31</pre>||No requirements
|-
|}
 
 
=== 63 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 24    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 FC    BPL *-2</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 0A    LDY #10
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 1D    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 1D    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      × 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      × 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 0A    LDY #10
88      DEY
10 FD    BPL *-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 $A5
98      TYA
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>E6 xx    INC @zptemp
48      PHA
A9 E9    LDA #$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 16    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      × 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 \ × 5
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 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× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ × 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 \ × 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|25 bytes
|-
|<pre>EA  ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|32 bytes
|-
|<pre>18  ... CLC      × 30
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 30
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 30
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 30
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|33 bytes
|-
|<pre>EA  ... NOP      × 30
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 64 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 25    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 09    LDX #9
EA      NOP
CA      DEX
D0 FC    BNE *-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      × 2
B0 FA    BCS *-4</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>48      PHA
A9 1E    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 1E    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      × 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 #$0A ;hides 'ASL A'
EA  ... NOP      × 4
10 F9    BPL *-5</pre>||Clobbers A, Z&N, and C
|-
|<pre>08      PHP
A2 07    LDX #7
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 07    LDY #7
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      × 2
98      TYA
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9 17    LDA #23
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$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 0A    LDY #10
88      DEY
10 FD    BPL *-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× 9</pre>||Clobbers Z&N
|-
!colspan="2"|32 bytes
|-
|<pre>EA  ... NOP      × 32</pre>||No requirements
|-
|}
 
 
=== 65 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 26    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 #$0A ;hides 'ASL A'
48      PHA
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C; and writes in stack
|-
|<pre>A2 07    LDX #7
48      PHA
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>68      PLA
A2 0C    LDX #12
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>A0 07    LDY #7
48      PHA
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>68      PLA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 2
A2 0C    LDX #12
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 0C    LDY #12
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 1F    LDA #31
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9 1F    LDA #31
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
08      PHP
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
38      SEC
A9 EB    LDA #$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      × 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 \ × 5
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|26 bytes
|-
|<pre>26 26    ROL $26  \ × 2
66 26    ROR $26  /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|33 bytes
|-
|<pre>18  ... CLC      × 31
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 31
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 31
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 31
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|34 bytes
|-
|<pre>EA  ... NOP      × 31
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 66 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 0C    LDX #12
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0C    LDY #12
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 27    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 20    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 20    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 09    LDA #9
EA      NOP
E9 01    SBC #1
D0 FB    BNE *-3</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      × 2
48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18      CLC
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, and C
|-
|<pre>48      PHA
08      PHP
A2 0A    LDX #10
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 F8    LDY #248 ;hides 'SED'
C8      INY
D0 FC    BNE *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N, and D; and writes in stack
|-
|<pre>98      TYA
C9 CD    CMP #<$CD ;hides 'CMP $07A0'
A0 07    LDY #7
88      DEY
D0 FA    BNE *-4
A8      TAY</pre>||Clobbers A, Z&N, and C
|-
|<pre>8C      TXA
A2 2C    LDX #<$2C ;hides 'BIT $06A2'
A2 06    LDX #6
CA      DEX
10 FA    BPL *-4
AA      TAX</pre>||Clobbers A, Z&N, and V
|-
|<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 0A    LDY #10
88      DEY
10 FD    BPL *-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>98      TYA
A0 8D    LDY #<$8D ;hides 'STA $06A0'
A0 06    LDY #6
88      DEY
10 FA    BPL *-4
A8      TAY</pre>||Clobbers A, and Z&N; and requires writable $600-$6FF
|-
|<pre>98      TYA
A0 8D    LDY #<$8D ;hides 'STA $07A0'
A0 07    LDY #7
88      DEY
D0 FA    BNE *-4
A8      TAY</pre>||Clobbers A, and Z&N; and requires writable $700-$7FF
|-
|<pre>08      PHP
48      PHA
A9 19    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>98      TYA
80 0C    NOP #<$0C ;hides 'NOP $07A0'
A0 07    LDY #7
88      DEY
D0 FA    BNE *-4
A8      TAY</pre>||Clobbers A, and Z&N; and requires support for unofficial opcodes
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>EA  ... NOP      × 3
98      TYA
A0 0A    LDY #10
88      DEY
10 FD    BPL *-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      × 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      × 2
84 xx    STY @zptemp
A0 0A    LDY #10
88      DEY
10 FD    BPL *-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× 9</pre>||Clobbers Z&N
|-
!colspan="2"|33 bytes
|-
|<pre>EA  ... NOP      × 33</pre>||No requirements
|-
|}
 
 
=== 67 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 28    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 21    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 21    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 05    LDX #5
48  ... PHA      × 2
CA      DEX
10 FB    BPL *-3</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>A2 05    LDX #5
EA      NOP
68      PLA
CA      DEX
10 FB    BPL *-3</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>A0 05    LDY #5
48  ... PHA      × 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 09    LDX #9
EA      NOP
CA      DEX
D0 FC    BNE *-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 0A    LDY #10
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 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      × 2
08      PHP
A0 0A    LDY #10
88      DEY
10 FD    BPL *-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 1A    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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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× 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× 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× 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× 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  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|34 bytes
|-
|<pre>18  ... CLC      × 32
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 32
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 32
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 32
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|35 bytes
|-
|<pre>EA  ... NOP      × 32
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 68 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 29    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 0C    LDX #12
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 0C    LDY #12
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 0C    LDA #12
E9 01    SBC #1
10 FC    BPL *-2</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 22    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 22    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 #$0A ;hides 'ASL A'
08      PHP
28      PLP
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 1B    LDA #27
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
98      TYA
A0 07    LDY #7
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 E9    LDA #$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 #$0A ;hides 'ASL A'
EA  ... NOP      × 3
10 FA    BPL *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>84 xx    STY @zptemp
C9 CD    CMP #<$CD ;hides 'CMP $07A0'
A0 07    LDY #7
88      DEY
D0 FA    BNE *-4
A4 xx    LDY @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp
|-
|<pre>86 xx    STX @zptemp
A2 2C    LDX #<$2C ;hides 'BIT $06A2'
A2 06    LDX #6
CA      DEX
10 FA    BPL *-4
A6 xx    LDX @zptemp</pre>||Clobbers Z&N, and V; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 0A    LDY #10
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 8D    LDY #<$8D ;hides 'STA $06A0'
A0 06    LDY #6
88      DEY
10 FA    BPL *-4
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $600-$6FF
|-
|<pre>84 xx    STY @zptemp
A0 8D    LDY #<$8D ;hides 'STA $07A0'
A0 07    LDY #7
88      DEY
D0 FA    BNE *-4
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and writable $700-$7FF
|-
|<pre>84 xx    STY @zptemp
80 0C    NOP #<$0C ;hides 'NOP $07A0'
A0 07    LDY #7
88      DEY
D0 FA    BNE *-4
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
|-
!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× 9</pre>||Clobbers Z&N
|-
!colspan="2"|34 bytes
|-
|<pre>EA  ... NOP      × 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 2A    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 0C    LDX #12
CA      DEX
10 FD    BPL *-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 0C    LDX #12
CA      DEX
10 FD    BPL *-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 23    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 23    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      × 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× 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× 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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× 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× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|26 bytes
|-
|<pre>36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|35 bytes
|-
|<pre>18  ... CLC      × 33
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 33
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 33
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 33
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|36 bytes
|-
|<pre>EA  ... NOP      × 33
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 70 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 2B    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 0C    LDX #12
CA      DEX
10 FD    BPL *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 0C    LDY #12
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 0C    LDY #12
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 2
A2 0C    LDX #12
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 0C    LDY #12
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 24    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 24    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 FC    BPL *-2
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 FC    BPL *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 1D    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      × 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      × 2
98      TYA
A0 0A    LDY #10
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 $A5
98      TYA
A0 0A    LDY #10
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
48      PHA
E6 xx    INC @zptemp
A9 E9    LDA #$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 \ × 5
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|35 bytes
|-
|<pre>EA  ... NOP      × 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 0E    LDY #14
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 2C    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 #$4A ;hides 'LSR A'
EA  ... NOP      × 2
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 25    LDA #37
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9 25    LDA #37
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>08      PHP
A2 09    LDX #9
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 08    LDY #8
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
EA  ... NOP      × 2
B0 FA    BCS *-4
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
EA  ... NOP      × 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 1E    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      × 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× 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× 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× 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× 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× 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× 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× 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× 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× 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× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|27 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|36 bytes
|-
|<pre>18  ... CLC      × 34
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 34
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 34
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 34
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|37 bytes
|-
|<pre>EA  ... NOP      × 34
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 72 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 2D    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>C5 CD    CMP <$CD ;hides 'CMP $78A2'
A2 78    LDX #120
E8      INX
10 FA    BPL *-4</pre>||Clobbers X, Z&N, and C
|-
|<pre>24 2C    BIT <$2C ;hides 'BIT $87A2'
A2 87    LDX #135
CA      DEX
30 FA    BMI *-4</pre>||Clobbers X, Z&N, and V
|-
|<pre>A5 AD    LDA <$AD ;hides 'LDA $08A2'
A2 08    LDX #8
CA      DEX
D0 FA    BNE *-4</pre>||Clobbers A, X, and Z&N
|-
|<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 26    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 26    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>04 0C    NOP <$0C ;hides 'NOP $08A2'
A2 08    LDX #8
CA      DEX
D0 FA    BNE *-4</pre>||Clobbers X, and Z&N; and requires support for unofficial opcodes
|-
|<pre>48  ... PHA      × 2
A2 0C    LDX #12
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 0C    LDY #12
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 3
A2 0C    LDX #12
CA      DEX
10 FD    BPL *-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 07    LDX #7
24 24    BIT $24
CA      DEX
10 FB    BPL *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 07    LDY #7
24 24    BIT $24
88      DEY
10 FB    BPL *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0C    LDY #12
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 1F    LDA #31
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 EB    LDA #$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 \ × 6
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|36 bytes
|-
|<pre>EA  ... NOP      × 36</pre>||No requirements
|-
|}
 
 
=== 73 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 2E    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 0E    LDY #14
88      DEY
D0 FD    BNE *-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 0C    LDX #12
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0C    LDY #12
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 27    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 27    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 20    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      × 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      × 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 09    LDX #9
EA      NOP
CA      DEX
D0 FC    BNE *-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× 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× 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× 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× 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× 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× 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 \ × 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 \ × 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 \ × 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 \ × 5
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|28 bytes
|-
|<pre>EA  ... NOP      × 2
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|37 bytes
|-
|<pre>18  ... CLC      × 35
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 35
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 35
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 35
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|38 bytes
|-
|<pre>EA  ... NOP      × 35
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 74 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 2F    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 0E    LDY #14
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 0D    LDX #13
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 28    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 28    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      × 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      × 2
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C
|-
|<pre>68      PLA
98      TYA
A0 0C    LDY #12
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      × 2
98      TYA
A0 0C    LDY #12
88      DEY
10 FD    BPL *-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 21    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 09    LDX #9
EA      NOP
CA      DEX
D0 FC    BNE *-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 07    LDX #7
24 24    BIT $24
CA      DEX
10 FB    BPL *-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 0C    LDY #12
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 0A    LDY #10
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|25 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|37 bytes
|-
|<pre>EA  ... NOP      × 37</pre>||No requirements
|-
|}
 
 
=== 75 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 30    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 0E    LDY #14
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 2
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 29    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 29    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 0C    LDX #12
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 0C    LDY #12
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 0C    LDA #12
E9 01    SBC #1
10 FC    BPL *-2
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 FC    BPL *-2
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 22    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 \ × 6
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 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× 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× 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× 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× 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× 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× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ × 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 \ × 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|29 bytes
|-
|<pre>EA  ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|38 bytes
|-
|<pre>18  ... CLC      × 36
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 36
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 36
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 36
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|39 bytes
|-
|<pre>EA  ... NOP      × 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 31    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 2A    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 2A    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      × 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 0C    LDX #12
CA      DEX
10 FD    BPL *-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 0C    LDX #12
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 23    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      × 2
84 xx    STY @zptemp
A0 0C    LDY #12
88      DEY
10 FD    BPL *-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× 9</pre>||Clobbers Z&N
|-
!colspan="2"|38 bytes
|-
|<pre>EA  ... NOP      × 38</pre>||No requirements
|-
|}
 
 
=== 77 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 32    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 0E    LDY #14
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9 2B    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 2B    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      × 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      × 2
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-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 0E    LDY #14
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 3
A2 0D    LDX #13
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 3
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 0C    LDY #12
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0C    LDY #12
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 2
08      PHP
A2 0C    LDX #12
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      × 2
08      PHP
A0 0C    LDY #12
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 24    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 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|27 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|30 bytes
|-
|<pre>26 26    ROL $26  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|39 bytes
|-
|<pre>18  ... CLC      × 37
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 37
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 37
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 37
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|40 bytes
|-
|<pre>EA  ... NOP      × 37
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 78 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 33    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 0A    LDY #10
EA      NOP
88      DEY
10 FC    BPL *-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 FC    BPL *-2</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 0E    LDY #14
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 2C    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 2C    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      × 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      × 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      × 2
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9 25    LDA #37
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
EA      NOP
30 FC    BMI *-2
A4 xx    LDY @zptemp</pre>||Clobbers S, and Z&N; requires @zptemp; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A      ROL A ;first loop only
EA  ... NOP      × 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|39 bytes
|-
|<pre>EA  ... NOP      × 39</pre>||No requirements
|-
|}
 
 
=== 79 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 34    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 2D    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 2D    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      × 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 0E    LDY #14
88      DEY
D0 FD    BNE *-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      × 2
98      TYA
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
24 2C    BIT <$2C ;hides 'BIT $87A2'
A2 87    LDX #135
CA      DEX
30 FA    BMI *-4
28      PLP</pre>||Clobbers 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
48      PHA
A9 26    LDA #38
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 0C    LDY #12
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 0C    LDY #12
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 0E    LDY #14
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 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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× 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× 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× 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× 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 \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|40 bytes
|-
|<pre>18  ... CLC      × 38
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 38
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 38
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 38
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|41 bytes
|-
|<pre>EA  ... NOP      × 38
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 80 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 35    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      × 2
A2 0E    LDX #14
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 0F    LDY #15
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 2E    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 2E    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 0E    LDY #14
88      DEY
D0 FD    BNE *-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 27    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 09    LDA #9
EA      NOP
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|27 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|40 bytes
|-
|<pre>EA  ... NOP      × 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 36    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 #$18'
18      CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4</pre>||Clobbers A, Z&N, C, and V; and requires @zptemp
|-
|<pre>48      PHA
A9 2F    LDA #47
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9 2F    LDA #47
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>A9 E9    LDA #$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 0E    LDY #14
88      DEY
D0 FD    BNE *-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      × 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 0E    LDY #14
88      DEY
D0 FD    BNE *-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 28    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      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
EA  ... NOP      × 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      × 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-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      × 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      × 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 3
98      TYA
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      × 2
48      PHA
98      TYA
A0 0C    LDY #12
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      × 2
84 xx    STY @zptemp
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|30 bytes
|-
|<pre>36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|41 bytes
|-
|<pre>18  ... CLC      × 39
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 39
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 39
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 39
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|42 bytes
|-
|<pre>EA  ... NOP      × 39
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 82 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 37    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 09    LDX #9
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'
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 09    LDX #9
EA  ... NOP      × 2
CA      DEX
D0 FB    BNE *-3</pre>||Clobbers X, and Z&N
|-
|<pre>A0 08    LDY #8
EA  ... NOP      × 2
88      DEY
10 FB    BPL *-3</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 30    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 30    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 0A    LDY #10
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 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      × 2
08      PHP
A0 0E    LDY #14
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
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 29    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 FC    BPL *-2
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 \ × 6
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|41 bytes
|-
|<pre>EA  ... NOP      × 41</pre>||No requirements
|-
|}
 
 
=== 83 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 38    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 FC    BPL *-2</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 31    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 31    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 2A    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      × 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      × 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      × 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      × 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 0E    LDY #14
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
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      × 3
84 xx    STY @zptemp
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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× 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× 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× 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× 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× 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× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|31 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|42 bytes
|-
|<pre>18  ... CLC      × 40
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 40
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 40
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 40
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|43 bytes
|-
|<pre>EA  ... NOP      × 40
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 84 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 39    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 #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4</pre>||Clobbers A, Z&N, and C; requires @rts12; and writes in stack
|-
|<pre>48      PHA
A9 32    LDA #50
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9 32    LDA #50
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>68  ... PLA      × 2
A9 E9    LDA #$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      × 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      × 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 0E    LDY #14
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 2B    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      × 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      × 2
08      PHP
A0 0E    LDY #14
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 0E    LDY #14
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 0E    LDY #14
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 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      × 3
08      PHP
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0A    LDY #10
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 0C    LDY #12
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|28 bytes
|-
|<pre>36 36    ROL $36,X \ × 7
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|42 bytes
|-
|<pre>EA  ... NOP      × 42</pre>||No requirements
|-
|}
 
 
=== 85 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 3A    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 33    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 33    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 0A    LDY #10
EA      NOP
88      DEY
10 FC    BPL *-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 FC    BPL *-2
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 FC    BPL *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 2C    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      × 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 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 \ × 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 \ × 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 \ × 6
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|32 bytes
|-
|<pre>EA  ... NOP      × 2
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|43 bytes
|-
|<pre>18  ... CLC      × 41
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 41
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 41
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 41
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|44 bytes
|-
|<pre>EA  ... NOP      × 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 3B    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 34    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 34    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      × 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 2D    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      × 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      × 2
48      PHA
98      TYA
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      × 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 0C    LDY #12
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|29 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|43 bytes
|-
|<pre>EA  ... NOP      × 43</pre>||No requirements
|-
|}
 
 
=== 87 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 3C    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      × 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      × 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 35    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 35    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      × 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      × 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 2E    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 \ × 7
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ × 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 \ × 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|33 bytes
|-
|<pre>EA  ... NOP      × 3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|44 bytes
|-
|<pre>18  ... CLC      × 42
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 42
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 42
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 42
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|45 bytes
|-
|<pre>EA  ... NOP      × 42
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 88 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 3D    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 FC    BPL *-2</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 36    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 36    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 #$18'
18      CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4
28      PLP</pre>||Clobbers A; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 2F    LDA #47
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A9 E9    LDA #$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      × 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      × 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      × 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      × 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|44 bytes
|-
|<pre>EA  ... NOP      × 44</pre>||No requirements
|-
|}
 
 
=== 89 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 3E    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      × 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 37    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 37    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      × 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 09    LDX #9
EA  ... NOP      × 2
CA      DEX
D0 FB    BNE *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 08    LDY #8
EA  ... NOP      × 2
88      DEY
10 FB    BPL *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 30    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 0A    LDY #10
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 0A    LDY #10
EA      NOP
88      DEY
10 FC    BPL *-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 0E    LDY #14
88      DEY
D0 FD    BNE *-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 \ × 7
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|34 bytes
|-
|<pre>26 26    ROL $26  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|45 bytes
|-
|<pre>18  ... CLC      × 43
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 43
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 43
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 43
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|46 bytes
|-
|<pre>EA  ... NOP      × 43
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 90 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 3F    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      × 2
A2 11    LDX #17
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 10    LDY #16
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 38    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 38    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 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 31    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      × 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      × 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|45 bytes
|-
|<pre>EA  ... NOP      × 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 40    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      × 2
30 FA    BMI *-4</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>48      PHA
A9 39    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 39    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      × 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      × 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 32    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      × 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 #$4A ;hides 'LSR A'
EA  ... NOP      × 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      × 2
A9 E9    LDA #$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      × 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>EA  ... NOP      × 2
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
|-
!colspan="2"|12 bytes
|-
|<pre>EA      NOP
08      PHP
48      PHA
98      TYA
A0 0E    LDY #14
88      DEY
D0 FD    BNE *-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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|46 bytes
|-
|<pre>18  ... CLC      × 44
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 44
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 44
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 44
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|47 bytes
|-
|<pre>EA  ... NOP      × 44
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 92 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 41    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 0C    LDX #12
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 0C    LDY #12
EA      NOP
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 3A    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 3A    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 33    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 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|31 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|46 bytes
|-
|<pre>EA  ... NOP      × 46</pre>||No requirements
|-
|}
 
 
=== 93 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 42    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 12    LDA #18
E9 01    SBC #1
D0 FC    BNE *-2</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 3B    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 3B    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      × 2
30 FB    BMI *-3
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 34    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      × 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      × 2
38      SEC
A9 0F    LDA #15
E9 01    SBC #1
10 FC    BPL *-2
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      × 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|34 bytes
|-
|<pre>36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|47 bytes
|-
|<pre>18  ... CLC      × 45
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 45
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 45
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 45
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|48 bytes
|-
|<pre>EA  ... NOP      × 45
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 94 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 43    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 3C    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 3C    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      \ × 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 FB    BPL *-3</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      × 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      × 3
D0 FA    BNE *-4
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 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 35    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 \ × 7
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|47 bytes
|-
|<pre>EA  ... NOP      × 47</pre>||No requirements
|-
|}
 
 
=== 95 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 44    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      × 2
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 3D    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 3D    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 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 36    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      × 2
30 FB    BMI *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48  ... PHA      × 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|35 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|48 bytes
|-
|<pre>18  ... CLC      × 46
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 46
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 46
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 46
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|49 bytes
|-
|<pre>EA  ... NOP      × 46
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 96 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 12    LDX #18
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 13    LDY #19
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 45    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 3E    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 3E    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 0C    LDY #12
EA      NOP
88      DEY
10 FC    BPL *-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      × 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 37    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      × 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 0A    LDY #10
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|32 bytes
|-
|<pre>36 36    ROL $36,X \ × 8
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|48 bytes
|-
|<pre>EA  ... NOP      × 48</pre>||No requirements
|-
|}
 
 
=== 97 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 46    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 07    LDX #7
08      PHP
28      PLP
CA      DEX
10 FB    BPL *-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 3F    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 3F    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      × 3
A2 11    LDX #17
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 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      × 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      × 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 38    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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 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 \ × 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 \ × 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 \ × 7
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|36 bytes
|-
|<pre>EA  ... NOP      × 2
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|49 bytes
|-
|<pre>18  ... CLC      × 47
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 47
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 47
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 47
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|50 bytes
|-
|<pre>EA  ... NOP      × 47
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 98 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 47    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 12    LDX #18
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 13    LDY #19
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 12    LDA #18
E9 01    SBC #1
10 FC    BPL *-2</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 40    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 40    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 #$0A'
0A      ASL A ;first loop only
EA  ... NOP      × 2
30 FA    BMI *-4
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
EA  ... NOP      × 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 39    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 0C    LDY #12
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
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 #$4A ;hides 'LSR A'
EA  ... NOP      × 2
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
48      PHA
A9 E9    LDA #$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>EA  ... NOP      × 2
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"|33 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|49 bytes
|-
|<pre>EA  ... NOP      × 49</pre>||No requirements
|-
|}
 
 
=== 99 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 48    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 0E    LDY #14
EA      NOP
88      DEY
D0 FC    BNE *-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 41    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 41    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      × 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 0C    LDX #12
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0C    LDY #12
EA      NOP
88      DEY
10 FC    BPL *-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      × 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 3A    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      × 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 \ × 8
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ × 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 \ × 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|37 bytes
|-
|<pre>EA  ... NOP      × 3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|50 bytes
|-
|<pre>18  ... CLC      × 48
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 48
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 48
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 48
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|51 bytes
|-
|<pre>EA  ... NOP      × 48
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 100 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 49    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 0A    LDY #10
68      PLA
88      DEY
10 FC    BPL *-2</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 13    LDY #19
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 2
A2 12    LDX #18
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 13    LDY #19
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 42    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 42    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 12    LDA #18
E9 01    SBC #1
D0 FC    BNE *-2
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
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 3B    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      × 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|50 bytes
|-
|<pre>EA  ... NOP      × 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 13    LDY #19
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 4A    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 43    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 43    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 0D    LDA #13
EA      NOP
E9 01    SBC #1
10 FB    BPL *-3</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 3C    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      \ × 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 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 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      × 3
D0 FA    BNE *-4
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>EA  ... NOP      × 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 \ × 8
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|38 bytes
|-
|<pre>26 26    ROL $26  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|51 bytes
|-
|<pre>18  ... CLC      × 49
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 49
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 49
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 49
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|52 bytes
|-
|<pre>EA  ... NOP      × 49
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 102 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 4B    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 13    LDY #19
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9 44    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 44    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      × 2
A2 12    LDX #18
CA      DEX
10 FD    BPL *-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      × 2
A0 13    LDY #19
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
A0 0A    LDY #10
68      PLA
88      DEY
10 FC    BPL *-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 13    LDY #19
88      DEY
D0 FD    BNE *-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 0E    LDY #14
EA      NOP
88      DEY
D0 FC    BNE *-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      × 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      × 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 13    LDY #19
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 3D    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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|51 bytes
|-
|<pre>EA  ... NOP      × 51</pre>||No requirements
|-
|}
 
 
=== 103 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 4C    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 13    LDY #19
88      DEY
10 FD    BPL *-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 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 12    LDX #18
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 13    LDY #19
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 45    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 45    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      × 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 0E    LDY #14
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 3E    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 0C    LDY #12
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 0C    LDY #12
EA      NOP
88      DEY
10 FC    BPL *-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 0C    LDY #12
EA      NOP
88      DEY
10 FC    BPL *-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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|52 bytes
|-
|<pre>18  ... CLC      × 50
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 50
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 50
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 50
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|53 bytes
|-
|<pre>EA  ... NOP      × 50
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 104 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 4D    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 13    LDY #19
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 13    LDX #19
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 13    LDY #19
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 46    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 46    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 13    LDY #19
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 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      × 2
98      TYA
A0 13    LDY #19
88      DEY
D0 FD    BNE *-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 3F    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 13    LDY #19
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 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|52 bytes
|-
|<pre>EA  ... NOP      × 52</pre>||No requirements
|-
|}
 
 
=== 105 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 4E    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 0C    LDX #12
48      PHA
CA      DEX
10 FC    BPL *-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 0C    LDY #12
48      PHA
88      DEY
10 FC    BPL *-2</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>68      PLA
A0 13    LDY #19
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 13    LDY #19
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 2
A2 13    LDX #19
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 13    LDY #19
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 47    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 47    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 12    LDX #18
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 13    LDY #19
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 12    LDA #18
E9 01    SBC #1
10 FC    BPL *-2
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 FC    BPL *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 40    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      × 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 #$4A ;hides 'LSR A'
08      PHP
28      PLP
D0 FB    BNE *-3
68      PLA</pre>||Clobbers Z&N, and C; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 0E    LDY #14
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48  ... PHA      × 2
98      TYA
A0 12    LDY #18
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
EA  ... NOP      × 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|38 bytes
|-
|<pre>36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|53 bytes
|-
|<pre>18  ... CLC      × 51
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 51
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 51
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 51
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|54 bytes
|-
|<pre>EA  ... NOP      × 51
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 106 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 14    LDY #20
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 4F    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 48    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 48    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 0E    LDY #14
EA      NOP
88      DEY
D0 FC    BNE *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 4A    LDA #$4A ;hides 'LSR A'
48  ... PHA      × 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 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2</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 41    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 13    LDY #19
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>48      PHA
38  ... SEC      × 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      × 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 0E    LDY #14
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      × 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      × 2
84 xx    STY @zptemp
A0 13    LDY #19
88      DEY
D0 FD    BNE *-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 \ × 8
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|53 bytes
|-
|<pre>EA  ... NOP      × 53</pre>||No requirements
|-
|}
 
 
=== 107 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 50    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      × 2
D0 FB    BNE *-3</pre>||Clobbers X, and Z&N
|-
|<pre>A0 18    LDY #24 ;hides 'CLC'
88  ... DEY      × 2
D0 FB    BNE *-3</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 49    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 49    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 13    LDY #19
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 13    LDY #19
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 13    LDY #19
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 2
08      PHP
A2 12    LDX #18
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      × 2
08      PHP
A0 13    LDY #19
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 13    LDY #19
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 42    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 12    LDA #18
E9 01    SBC #1
D0 FC    BNE *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|37 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|39 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|54 bytes
|-
|<pre>18  ... CLC      × 52
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 52
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 52
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 52
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|55 bytes
|-
|<pre>EA  ... NOP      × 52
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 108 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 51    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 15    LDX #21
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 14    LDY #20
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>38      SEC
A9 14    LDA #20
E9 01    SBC #1
10 FC    BPL *-2</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 13    LDY #19
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 4A    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 4A    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 13    LDY #19
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 13    LDY #19
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9 43    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 0D    LDA #13
EA      NOP
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 0D    LDA #13
EA      NOP
E9 01    SBC #1
10 FB    BPL *-3
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      × 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 13    LDY #19
88      DEY
D0 FD    BNE *-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 FB    BPL *-3
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 \ × 9
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|54 bytes
|-
|<pre>EA  ... NOP      × 54</pre>||No requirements
|-
|}
 
 
=== 109 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 52    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 15    LDX #21
CA      DEX
D0 FD    BNE *-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 14    LDY #20
88      DEY
10 FD    BPL *-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 15    LDX #21
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 14    LDY #20
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 4B    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 4B    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 74    LDA #116 ;hides 'NOP zp,X'
EA      NOP
69 01    ADC #1
10 FA    BPL *-4</pre>||Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
|-
|<pre>68      PLA
98      TYA
A0 13    LDY #19
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      × 2
98      TYA
A0 13    LDY #19
88      DEY
10 FD    BPL *-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 13    LDY #19
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 44    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      × 2
08      PHP
A2 12    LDX #18
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      × 2
08      PHP
A0 13    LDY #19
88      DEY
D0 FD    BNE *-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 13    LDY #19
88      DEY
10 FD    BPL *-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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 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 \ × 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 \ × 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 \ × 8
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|40 bytes
|-
|<pre>EA  ... NOP      × 2
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|55 bytes
|-
|<pre>18  ... CLC      × 53
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 53
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 53
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 53
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|56 bytes
|-
|<pre>EA  ... NOP      × 53
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 110 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 53    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 15    LDX #21
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 14    LDY #20
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 14    LDY #20
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 2
A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 14    LDY #20
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 4C    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 4C    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 13    LDY #19
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 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
38      SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 45    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 0E    LDY #14
EA      NOP
88      DEY
D0 FC    BNE *-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 0C    LDY #12
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|37 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|55 bytes
|-
|<pre>EA  ... NOP      × 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 4D    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 4D    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      × 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 13    LDY #19
88      DEY
10 FD    BPL *-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 13    LDY #19
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 46    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 0C    LDY #12
48      PHA
88      DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp</pre>||Clobbers S, and Z&N; requires @zptemp; and writes in stack
|-
|<pre>48  ... PHA      × 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      × 2
84 xx    STY @zptemp
A0 13    LDY #19
88      DEY
10 FD    BPL *-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 \ × 9
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ × 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 \ × 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|41 bytes
|-
|<pre>EA  ... NOP      × 3
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|56 bytes
|-
|<pre>18  ... CLC      × 54
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 54
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 54
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 54
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|57 bytes
|-
|<pre>EA  ... NOP      × 54
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 112 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 55    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 14    LDY #20
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9 4E    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 4E    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      × 2
A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>48  ... PHA      × 2
A0 14    LDY #20
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
|<pre>EA      NOP
68      PLA
A0 14    LDY #20
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 14    LDY #20
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 3
A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 3
A0 14    LDY #20
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 13    LDY #19
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 13    LDY #19
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
A2 0C    LDX #12
24 24    BIT $24
CA      DEX
10 FB    BPL *-3
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 0C    LDY #12
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 14    LDY #20
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 47    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 FC    BPL *-2
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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|56 bytes
|-
|<pre>EA  ... NOP      × 56</pre>||No requirements
|-
|}
 
 
=== 113 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 56    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 15    LDX #21
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 14    LDY #20
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 4F    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 4F    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 14    LDY #20
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 14    LDY #20
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9 48    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      × 2
D0 FB    BNE *-3
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48  ... PHA      × 2
38      SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; and writes in stack
|-
|<pre>48      PHA
08      PHP
38      SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
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 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
68      PLA</pre>||Clobbers Z&N, C, and V; and writes in stack
|-
|<pre>08      PHP
A5 A5    LDA $A5
38      SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
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      × 3
98      TYA
A0 13    LDY #19
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>08      PHP
48      PHA
38  ... SEC      × 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 \ × 9
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|42 bytes
|-
|<pre>26 26    ROL $26  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|57 bytes
|-
|<pre>18  ... CLC      × 55
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 55
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 55
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 55
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|58 bytes
|-
|<pre>EA  ... NOP      × 55
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 114 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 57    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 50    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 50    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      × 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      × 2
D0 FB    BNE *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 14    LDY #20
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      × 2
98      TYA
A0 14    LDY #20
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9 49    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 13    LDY #19
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 13    LDY #19
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 14    LDY #20
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 13    LDY #19
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|38 bytes
|-
|<pre>36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|57 bytes
|-
|<pre>EA  ... NOP      × 57</pre>||No requirements
|-
|}
 
 
=== 115 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 58    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      × 2
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 15    LDY #21
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 51    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 51    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 15    LDX #21
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 14    LDY #20
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 14    LDA #20
E9 01    SBC #1
10 FC    BPL *-2
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
10 FC    BPL *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 4A    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      × 2
98      TYA
A0 13    LDY #19
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 13    LDY #19
88      DEY
10 FD    BPL *-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
D0 FD    BNE *-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 0D    LDA #13
EA      NOP
E9 01    SBC #1
10 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|39 bytes
|-
|<pre>FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|58 bytes
|-
|<pre>18  ... CLC      × 56
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 56
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 56
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 56
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|59 bytes
|-
|<pre>EA  ... NOP      × 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 17    LDX #23
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 16    LDY #22
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 52    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 52    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 15    LDX #21
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 14    LDY #20
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
A6 A6    LDX $A6
A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A4 A4    LDY $A4
A0 14    LDY #20
88      DEY
10 FD    BPL *-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 4B    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 14    LDY #20
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>EA  ... NOP      × 3
98      TYA
A0 14    LDY #20
88      DEY
10 FD    BPL *-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 74    LDA #116 ;hides 'NOP zp,X'
EA      NOP
69 01    ADC #1
10 FA    BPL *-4
68      PLA</pre>||Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>08      PHP
18      CLC
A9 74    LDA #116 ;hides 'NOP zp,X'
EA      NOP
69 01    ADC #1
10 FA    BPL *-4
28      PLP</pre>||Clobbers A; requires support for unofficial opcodes; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      × 2
48      PHA
98      TYA
A0 13    LDY #19
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 0C    LDY #12
24 24    BIT $24
88      DEY
10 FB    BPL *-3
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 2
84 xx    STY @zptemp
A0 14    LDY #20
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 13    LDY #19
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|39 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|58 bytes
|-
|<pre>EA  ... NOP      × 58</pre>||No requirements
|-
|}
 
 
=== 117 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 5A    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>C5 CD    CMP <$CD ;hides 'CMP $0DA2'
A2 0D    LDX #13
CA      DEX
D0 FA    BNE *-4</pre>||Clobbers X, Z&N, and C
|-
|<pre>24 2C    BIT <$2C ;hides 'BIT $F3A2'
A2 F3    LDX #243
E8      INX
D0 FA    BNE *-4</pre>||Clobbers X, Z&N, and V
|-
|<pre>A5 AD    LDA <$AD ;hides 'LDA $0DA2'
A2 0D    LDX #13
CA      DEX
D0 FA    BNE *-4</pre>||Clobbers A, X, and Z&N
|-
|<pre>C5 CD    CMP <$CD ;hides 'CMP $F3A0'
A0 F3    LDY #243
C8      INY
D0 FA    BNE *-4</pre>||Clobbers Y, Z&N, and C
|-
|<pre>24 2C    BIT <$2C ;hides 'BIT $0CA0'
A0 0C    LDY #12
88      DEY
10 FA    BPL *-4</pre>||Clobbers Y, Z&N, and V
|-
|<pre>A5 AD    LDA <$AD ;hides 'LDA $0CA0'
A0 0C    LDY #12
88      DEY
10 FA    BPL *-4</pre>||Clobbers A, Y, and Z&N
|-
|<pre>A4 AC    LDY <$AC ;hides 'LDY $F3A2'
A2 F3    LDX #243
E8      INX
D0 FA    BNE *-4</pre>||Clobbers X, 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 53    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 53    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>04 0C    NOP <$0C ;hides 'NOP $0CA2'
A2 0C    LDX #12
CA      DEX
10 FA    BPL *-4</pre>||Clobbers X, and Z&N; and requires support for unofficial opcodes
|-
|<pre>04 0C    NOP <$0C ;hides 'NOP $8CA0'
A0 8C    LDY #140
88      DEY
30 FA    BMI *-4</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
|-
|<pre>EA      NOP
68      PLA
A9 E9    LDA #$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      × 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      × 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      × 3
A2 15    LDX #21
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 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 14    LDY #20
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 14    LDY #20
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 2
08      PHP
A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      × 2
08      PHP
A0 14    LDY #20
88      DEY
10 FD    BPL *-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 4C    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 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|40 bytes
|-
|<pre>C5 C5    CMP $C5
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|42 bytes
|-
|<pre>36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|59 bytes
|-
|<pre>18  ... CLC      × 57
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 57
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 57
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 57
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|60 bytes
|-
|<pre>EA  ... NOP      × 57
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 118 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 5B    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 #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>EA      NOP
A2 17    LDX #23
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 16    LDY #22
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 E9    LDA #$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 4D    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      × 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 14    LDY #20
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      × 3
84 xx    STY @zptemp
A0 14    LDY #20
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 @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      × 2
08      PHP
48      PHA
98      TYA
A0 13    LDY #19
88      DEY
D0 FD    BNE *-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 \ × 9
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|59 bytes
|-
|<pre>EA  ... NOP      × 59</pre>||No requirements
|-
|}
 
 
=== 119 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 5C    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 17    LDX #23
CA      DEX
D0 FD    BNE *-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 17    LDX #23
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 16    LDY #22
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 55    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 55    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      × 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 14    LDY #20
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 4E    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      × 2
08      PHP
A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48  ... PHA      × 2
08      PHP
A0 14    LDY #20
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 14    LDY #20
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 14    LDY #20
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 3
08      PHP
A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      × 3
08      PHP
A0 14    LDY #20
88      DEY
10 FD    BPL *-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 13    LDY #19
88      DEY
10 FD    BPL *-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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|43 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|60 bytes
|-
|<pre>18  ... CLC      × 58
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 58
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 58
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 58
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|61 bytes
|-
|<pre>EA  ... NOP      × 58
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 120 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 5D    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 #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 16    LDY #22
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
A9 56    LDA #86
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9 56    LDA #86
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>48      PHA
38      SEC
A9 E9    LDA #$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 4F    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      × 2
98      TYA
A0 14    LDY #20
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 14    LDY #20
88      DEY
10 FD    BPL *-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      × 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 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
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 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|40 bytes
|-
|<pre>36 36    ROL $36,X \ × 10
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|60 bytes
|-
|<pre>EA  ... NOP      × 60</pre>||No requirements
|-
|}
 
 
=== 121 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 18    LDX #24
CA      DEX
D0 FD    BNE *-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 5E    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 57    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 57    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 #$0A ;hides 'ASL A'
EA      NOP
00 00    BRK 0
90 FA    BCC *-4</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      × 2
A9 E9    LDA #$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 #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>8C      TXA
C5 CD    CMP <$CD ;hides 'CMP $0DA2'
A2 0D    LDX #13
CA      DEX
D0 FA    BNE *-4
AA      TAX</pre>||Clobbers A, Z&N, and C
|-
|<pre>98      TYA
24 2C    BIT <$2C ;hides 'BIT $0CA0'
A0 0C    LDY #12
88      DEY
10 FA    BPL *-4
A8      TAY</pre>||Clobbers A, Z&N, and V
|-
|<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 50    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>8C      TXA
04 0C    NOP <$0C ;hides 'NOP $0CA2'
A2 0C    LDX #12
CA      DEX
10 FA    BPL *-4
AA      TAX</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      × 3
98      TYA
A0 15    LDY #21
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48  ... PHA      × 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      × 2
48      PHA
98      TYA
A0 14    LDY #20
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      × 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 13    LDY #19
88      DEY
10 FD    BPL *-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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 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 \ × 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 \ × 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 \ × 9
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|44 bytes
|-
|<pre>EA  ... NOP      × 2
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|61 bytes
|-
|<pre>18  ... CLC      × 59
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 59
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 59
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 59
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|62 bytes
|-
|<pre>EA  ... NOP      × 59
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 122 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 5F    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 58    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 58    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 16    LDY #22
88      DEY
10 FD    BPL *-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      × 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      × 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 16    LDY #22
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 51    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 14    LDA #20
E9 01    SBC #1
10 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|41 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|61 bytes
|-
|<pre>EA  ... NOP      × 61</pre>||No requirements
|-
|}
 
 
=== 123 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 60    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 18    LDX #24
CA      DEX
D0 FD    BNE *-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 17    LDA #23
E9 01    SBC #1
10 FC    BPL *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 17    LDX #23
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 16    LDY #22
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>A5 A5    LDA $A5
98      TYA
A0 16    LDY #22
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9 52    LDA #82
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
8C      TXA
A2 15    LDX #21
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX
68      PLA</pre>||Clobbers Z&N; requires @zptemp; and writes in stack
|-
|<pre>86 xx    STX @zptemp
C5 CD    CMP <$CD ;hides 'CMP $0DA2'
A2 0D    LDX #13
CA      DEX
D0 FA    BNE *-4
A6 xx    LDX @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp
|-
|<pre>84 xx    STY @zptemp
24 2C    BIT <$2C ;hides 'BIT $0CA0'
A0 0C    LDY #12
88      DEY
10 FA    BPL *-4
A4 xx    LDY @zptemp</pre>||Clobbers Z&N, and V; and requires @zptemp
|-
|<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>86 xx    STX @zptemp
04 0C    NOP <$0C ;hides 'NOP $0CA2'
A2 0C    LDX #12
CA      DEX
10 FA    BPL *-4
A6 xx    LDX @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      × 3
98      TYA
A0 14    LDY #20
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>EA  ... NOP      × 3
48      PHA
98      TYA
A0 14    LDY #20
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      × 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 74    LDA #116 ;hides 'NOP zp,X'
EA      NOP
69 01    ADC #1
10 FA    BPL *-4
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 0C    LDY #12
C5 C5    CMP $C5
88      DEY
10 FB    BPL *-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 \ × 10
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ × 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 \ × 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|45 bytes
|-
|<pre>EA  ... NOP      × 3
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|62 bytes
|-
|<pre>18  ... CLC      × 60
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 60
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 60
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 60
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|63 bytes
|-
|<pre>EA  ... NOP      × 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'
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
!colspan="2"|5 bytes
|-
|<pre>A9 61    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 $A4
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 5A    LDA #90
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9 5A    LDA #90
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00    BRK 0
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack
|-
|<pre>68  ... PLA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
C5 CD    CMP <$CD ;hides 'CMP $0DA2'
A2 0D    LDX #13
CA      DEX
D0 FA    BNE *-4
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
24 2C    BIT <$2C ;hides 'BIT $0CA0'
A0 0C    LDY #12
88      DEY
10 FA    BPL *-4
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
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
48      PHA
A9 53    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>48  ... PHA      × 3
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; and writes in stack
|-
|<pre>48  ... PHA      × 2
08      PHP
A9 E9    LDA #$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
|-
!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
84 xx    STY @zptemp
A0 16    LDY #22
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 14    LDY #20
88      DEY
10 FD    BPL *-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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|62 bytes
|-
|<pre>EA  ... NOP      × 62</pre>||No requirements
|-
|}
 
 
=== 125 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 62    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      × 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      × 2
10 FB    BPL *-3</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
|-
|<pre>68      PLA
A2 18    LDX #24
CA      DEX
D0 FD    BNE *-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      × 2
A2 18    LDX #24
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 5B    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 5B    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 #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A2 17    LDX #23
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA      NOP
08      PHP
A0 16    LDY #22
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$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 17    LDX #23
CA      DEX
D0 FD    BNE *-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 \ × 10
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|46 bytes
|-
|<pre>26 26    ROL $26  \ × 2
66 26    ROR $26  /
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|63 bytes
|-
|<pre>18  ... CLC      × 61
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 61
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 61
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 61
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|64 bytes
|-
|<pre>EA  ... NOP      × 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 63    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 5C    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 5C    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 #$0A'
0A      ASL A ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack
|-
|<pre>48  ... PHA      × 2
A9 E9    LDA #$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 #$0A'
0A      ASL A ;first loop only
B0 FC    BCS *-2
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
|<pre>EA      NOP
68  ... PLA      × 2
A9 E9    LDA #$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 17    LDX #23
CA      DEX
D0 FD    BNE *-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 17    LDX #23
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 55    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      × 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 14    LDY #20
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|42 bytes
|-
|<pre>36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|63 bytes
|-
|<pre>EA  ... NOP      × 63</pre>||No requirements
|-
|}
 
 
=== 127 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 64    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'
D0 FD    BNE *-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 5D    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 5D    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 #$2A'
2A      ROL A ;first loop only
00 00    BRK 0
B0 FA    BCS *-4</pre>||Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>EA      NOP
98      TYA
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
A2 11    LDX #17
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 10    LDY #16
EA      NOP
88      DEY
10 FC    BPL *-2
28      PLP</pre>||Clobbers Y; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 16    LDY #22
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 16    LDY #22
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 56    LDA #86
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 E9    LDA #$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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|64 bytes
|-
|<pre>18  ... CLC      × 62
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 62
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 62
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 62
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|65 bytes
|-
|<pre>EA  ... NOP      × 62
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 128 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 65    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'
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
!colspan="2"|6 bytes
|-
|<pre>8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-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 18    LDX #24
CA      DEX
D0 FD    BNE *-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 5E    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 5E    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 57    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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|64 bytes
|-
|<pre>EA  ... NOP      × 64</pre>||No requirements
|-
|}
 
 
=== 129 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 66    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'
D0 FD    BNE *-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 $A4
A0 18    LDY #24
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 5F    LDA #95
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9 5F    LDA #95
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00    BRK 0
A9 E9    LDA #$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 12    LDA #18
EA      NOP
E9 01    SBC #1
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>98      TYA
A0 1A    LDY #26 ;hides 'NOP'
88  ... DEY      × 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      × 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 58    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      × 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 16    LDY #22
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 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|46 bytes
|-
|<pre>36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|65 bytes
|-
|<pre>18  ... CLC      × 63
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 63
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 63
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 63
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|66 bytes
|-
|<pre>EA  ... NOP      × 63
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 130 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 67    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      × 2
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-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      × 2
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 18    LDY #24
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 60    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 60    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 18    LDX #24
CA      DEX
D0 FD    BNE *-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'
D0 FD    BNE *-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 \ × 10
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|65 bytes
|-
|<pre>EA  ... NOP      × 65</pre>||No requirements
|-
|}
 
 
=== 131 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 19    LDX #25
CA      DEX
10 FD    BPL *-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 68    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'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 61    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 61    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'
D0 FD    BNE *-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 $A4
A0 18    LDY #24
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 5A    LDA #90
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00    BRK 0
48      PHA
A9 E9    LDA #$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      × 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      × 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      × 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|47 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|66 bytes
|-
|<pre>18  ... CLC      × 64
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 64
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 64
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 64
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|67 bytes
|-
|<pre>EA  ... NOP      × 64
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 132 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 69    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      × 2
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-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'
D0 FD    BNE *-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 62    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 62    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'
D0 FD    BNE *-1
AA      TAX</pre>||Clobbers A, S, and Z&N
|-
|<pre>AA      TAX
68      PLA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N
|-
|<pre>48  ... PHA      × 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      × 3
A2 18    LDX #24
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 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      × 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      × 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      × 2
08      PHP
A2 18    LDX #24
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      × 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 5B    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 \ × 11
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|66 bytes
|-
|<pre>EA  ... NOP      × 66</pre>||No requirements
|-
|}
 
 
=== 133 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 6A    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 19    LDX #25
CA      DEX
10 FD    BPL *-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 FC    BPL *-2</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 63    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 63    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'
D0 FD    BNE *-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 $A5
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9 5C    LDA #92
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
A6 xx    LDX @zptemp</pre>||Clobbers S, and Z&N; requires @zptemp; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>84 xx    STY @zptemp
A0 12    LDY #18
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>20 xx xx JSR @rts15
48      PHA
A9 E9    LDA #$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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 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 \ × 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 \ × 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 \ × 10
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|48 bytes
|-
|<pre>EA  ... NOP      × 2
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|67 bytes
|-
|<pre>18  ... CLC      × 65
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 65
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 65
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 65
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|68 bytes
|-
|<pre>EA  ... NOP      × 65
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 134 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 6B    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 12    LDX #18
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 13    LDY #19
EA      NOP
88      DEY
D0 FC    BNE *-2</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 64    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 64    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'
D0 FD    BNE *-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 #$2A'
2A      ROL A ;first loop only
20 xx xx JSR @rts14
B0 F9    BCS *-5</pre>||Clobbers A, Z&N, C, and V; requires @rts12, and @rts14; and writes in stack
|-
|<pre>68      PLA
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      × 2
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9 5D    LDA #93
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
A9 E9    LDA #$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 16    LDY #22
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|45 bytes
|-
|<pre>EA      NOP
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|67 bytes
|-
|<pre>EA  ... NOP      × 67</pre>||No requirements
|-
|}
 
 
=== 135 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 6C    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 19    LDX #25
CA      DEX
10 FD    BPL *-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      × 2
A2 19    LDX #25
CA      DEX
10 FD    BPL *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 65    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 65    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'
D0 FD    BNE *-1
AA      TAX
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-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 5E    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'
D0 FD    BNE *-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 \ × 11
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>EA      NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>EA      NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>EA      NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>EA      NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>EA      NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>04 04    NOP $04
36 36    ROL $36,X \ × 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 \ × 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|49 bytes
|-
|<pre>EA  ... NOP      × 3
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
26 26... ROL $26  × 9</pre>||Clobbers Z&N
|-
!colspan="2"|68 bytes
|-
|<pre>18  ... CLC      × 66
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 66
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 66
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 66
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|69 bytes
|-
|<pre>EA  ... NOP      × 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 6D    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 66    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 66    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      × 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 FB    BPL *-3</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
E6 xx    INC @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; requires @zptemp; and writes in stack
|-
|<pre>68  ... PLA      × 2
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-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 $24
88      DEY
10 FB    BPL *-3
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>8C      TXA
A2 19    LDX #25
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX</pre>||Clobbers A, and Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 5F    LDA #95
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>00 00    BRK 0
48      PHA
A9 E9    LDA #$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 12    LDA #18
EA      NOP
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 12    LDA #18
EA      NOP
E9 01    SBC #1
D0 FB    BNE *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 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'
D0 FD    BNE *-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      × 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      × 2
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-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      × 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|68 bytes
|-
|<pre>EA  ... NOP      × 68</pre>||No requirements
|-
|}
 
 
=== 137 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 6E    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'
D0 FD    BNE *-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 67    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 67    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 12    LDX #18
EA      NOP
CA      DEX
10 FC    BPL *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 13    LDY #19
EA      NOP
88      DEY
D0 FC    BNE *-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      × 2
08      PHP
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-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      × 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      × 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 60    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'
D0 FD    BNE *-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 17    LDA #23
E9 01    SBC #1
10 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|47 bytes
|-
|<pre>EA      NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 11
76 36    ROR $36,X /</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|69 bytes
|-
|<pre>18  ... CLC      × 67
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 67
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 67
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 67
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|70 bytes
|-
|<pre>EA  ... NOP      × 67
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 138 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 6F    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 FC    BPL *-2</pre>||Clobbers A, Z&N, C, and V
|-
|<pre>08      PHP
A2 19    LDX #25
CA      DEX
10 FD    BPL *-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 68    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 68    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 13    LDY #19
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>08      PHP
48      PHA
A9 61    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      × 2
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-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'
D0 FD    BNE *-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'
D0 FD    BNE *-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 \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|69 bytes
|-
|<pre>EA  ... NOP      × 69</pre>||No requirements
|-
|}
 
 
=== 139 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 70    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 69    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 69    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      × 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'
D0 FD    BNE *-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 62    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      × 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      × 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      × 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      × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|70 bytes
|-
|<pre>18  ... CLC      × 68
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 68
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 68
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 68
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|71 bytes
|-
|<pre>EA  ... NOP      × 68
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 140 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 71    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      × 2
A2 1B    LDX #27
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 1B    LDY #27
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 6A    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 6A    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 19    LDX #25
CA      DEX
10 FD    BPL *-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 FC    BPL *-2
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 FC    BPL *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 63    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 13    LDY #19
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48  ... PHA      × 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 $A5
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>48      PHA
08      PHP
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
A6 xx    LDX @zptemp
28      PLP</pre>||Clobbers S; requires @zptemp; and writes in stack
|-
!colspan="2"|12 bytes
|-
|<pre>08      PHP
84 xx    STY @zptemp
A0 12    LDY #18
EA      NOP
88      DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
|<pre>20 xx xx JSR @rts15
08      PHP
48      PHA
A9 E9    LDA #$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 17    LDA #23
E9 01    SBC #1
10 FC    BPL *-2
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 \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N
|-
!colspan="2"|70 bytes
|-
|<pre>EA  ... NOP      × 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 72    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 6B    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 6B    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 12    LDX #18
EA      NOP
CA      DEX
10 FC    BPL *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 13    LDY #19
EA      NOP
88      DEY
D0 FC    BNE *-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'
D0 FD    BNE *-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 64    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 $A5
98      TYA
A0 13    LDY #19
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>48      PHA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX
68      PLA</pre>||Clobbers Z&N; requires @zptemp; and writes in stack
|-
|<pre>08      PHP
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX
28      PLP</pre>||Clobbers A; requires @zptemp; and writes in stack
|-
|<pre>48      PHA
A9 E9    LDA #$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 #$2A'
2A      ROL A ;first loop only
20 xx xx JSR @rts14
B0 F9    BCS *-5
28      PLP</pre>||Clobbers A; requires @rts12, and @rts14; and writes in stack
|-
|<pre>48  ... PHA      × 3
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA      TAX
68      PLA</pre>||Clobbers S, and Z&N; and writes in stack
|-
|<pre>48  ... PHA      × 2
08      PHP
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA      TAX
28      PLP</pre>||Clobbers A, and S; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>EA  ... NOP      × 2
48      PHA
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>EA  ... NOP      × 2
08      PHP
98      TYA
A0 18    LDY #24
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 2
84 xx    STY @zptemp
A0 1A    LDY #26
88      DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$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 \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and C
|-
|<pre>24 24    BIT $24
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and V
|-
|<pre>EA      NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 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 \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and not relocatable code
|-
!colspan="2"|71 bytes
|-
|<pre>18  ... CLC      × 69
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 69
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 69
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 69
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|72 bytes
|-
|<pre>EA  ... NOP      × 69
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 142 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 73    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      × 2
10 FA    BPL *-4</pre>||Clobbers X, and Z&N
|-
|<pre>A0 18    LDY #24 ;hides 'CLC'
EA      NOP
88  ... DEY      × 2
10 FA    BPL *-4</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 6C    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 6C    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      × 2
08      PHP
A2 19    LDX #25
CA      DEX
10 FD    BPL *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      × 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 65    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'
D0 FD    BNE *-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 \ × 11
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|71 bytes
|-
|<pre>EA  ... NOP      × 71</pre>||No requirements
|-
|}
 
 
=== 143 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 74    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 FC    BNE *-2</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 6D    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 6D    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 66    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 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
EA      NOP
E9 01    SBC #1
10 FB    BPL *-3
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>00 00    BRK 0
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-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      × 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 12    LDA #18
EA      NOP
E9 01    SBC #1
D0 FB    BNE *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 12    LDX #18
EA      NOP
CA      DEX
10 FC    BPL *-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 \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N, and C
|-
|<pre>EA      NOP
24 24    BIT $24
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 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 \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
|<pre>EA      NOP
04 04    NOP $04
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires support for unofficial opcodes
|-
!colspan="2"|72 bytes
|-
|<pre>18  ... CLC      × 70
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 70
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 70
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 70
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|73 bytes
|-
|<pre>EA  ... NOP      × 70
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 144 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 75    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 6E    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 6E    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'
D0 FD    BNE *-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      × 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 67    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 \ × 12
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|72 bytes
|-
|<pre>EA  ... NOP      × 72</pre>||No requirements
|-
|}
 
 
=== 145 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 76    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      × 2
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 6F    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 6F    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 FC    BPL *-2
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 FC    BPL *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 68    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 13    LDY #19
EA      NOP
88      DEY
D0 FC    BNE *-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'
D0 FD    BNE *-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 \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $200-$2FF
|-
|<pre>FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $300-$3FF
|-
|<pre>FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $400-$4FF
|-
|<pre>FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $500-$5FF
|-
|<pre>FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $600-$6FF
|-
|<pre>FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9</pre>||Clobbers Z&N; and requires writable $700-$7FF
|-
!colspan="2"|73 bytes
|-
|<pre>18  ... CLC      × 71
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 71
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 71
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 71
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|74 bytes
|-
|<pre>EA  ... NOP      × 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 1C    LDY #28
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>A9 77    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 70    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 70    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 FC    BNE *-2</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      × 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 69    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      × 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>EA  ... NOP      × 2
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      × 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 \ × 12
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|73 bytes
|-
|<pre>EA  ... NOP      × 73</pre>||No requirements
|-
|}
 
 
=== 147 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 78    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 71    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 71    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      × 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      × 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      × 3
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 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      × 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      × 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 6A    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 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|74 bytes
|-
|<pre>18  ... CLC      × 72
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 72
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 72
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 72
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|75 bytes
|-
|<pre>EA  ... NOP      × 72
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 148 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 79    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 15    LDX #21
EA      NOP
CA      DEX
D0 FC    BNE *-2</pre>||Clobbers X, and Z&N
|-
|<pre>A0 14    LDY #20
EA      NOP
88      DEY
10 FC    BPL *-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 FC    BNE *-2</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 72    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 72    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 $A5
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9 6B    LDA #107
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      × 2
38      SEC
A9 E9    LDA #$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'
D0 FD    BNE *-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      × 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      × 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 $A5
98      TYA
A0 13    LDY #19
EA      NOP
88      DEY
D0 FC    BNE *-2
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
48      PHA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX
68      PLA
28      PLP</pre>||Requires @zptemp; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 E9    LDA #$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      × 2
08      PHP
48      PHA
8C      TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA      TAX
68      PLA
28      PLP</pre>||Clobbers S; and writes in stack
|-
!colspan="2"|13 bytes
|-
|<pre>EA  ... NOP      × 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      × 74</pre>||No requirements
|-
|}
 
 
=== 149 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 7A    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 1C    LDY #28
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 1D    LDX #29
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 1C    LDY #28
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 73    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 73    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      × 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      × 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      × 2
10 FA    BPL *-4
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 6C    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      × 73
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 73
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 73
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 73
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|76 bytes
|-
|<pre>EA  ... NOP      × 73
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 150 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 7B    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 1C    LDY #28
88      DEY
10 FD    BPL *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 1C    LDY #28
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 2
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 2
A0 1C    LDY #28
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 74    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 74    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 FC    BNE *-2
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 FC    BNE *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 6D    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      × 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 FB    BPL *-3
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|60 bytes
|-
|<pre>26 26    ROL $26  \ × 15
66 26    ROR $26  /</pre>||Clobbers Z&N
|-
!colspan="2"|75 bytes
|-
|<pre>EA  ... NOP      × 75</pre>||No requirements
|-
|}
 
 
=== 151 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A2 1E    LDX #30
CA      DEX
D0 FD    BNE *-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 7C    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 #$4A ;hides 'LSR A'
20 xx xx JSR @rts14
D0 FA    BNE *-4</pre>||Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack
|-
|<pre>48      PHA
A9 75    LDA #117
20 xx xx JSR delay_a_25_clocks
68      PLA</pre>||Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
|-
|<pre>08      PHP
A9 75    LDA #117
20 xx xx JSR delay_a_25_clocks
28      PLP</pre>||Clobbers A; requires delay_a_25_clocks; and writes in stack
|-
|<pre>48      PHA
18      CLC
A9 E9    LDA #$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      \ × 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 FC    BNE *-2</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 6E    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      × 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      × 3
38      SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      × 2
08      PHP
38      SEC
A9 E9    LDA #$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      × 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      × 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      × 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      × 74
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 74
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 74
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 74
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|77 bytes
|-
|<pre>EA  ... NOP      × 74
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 152 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 7D    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>C9 CD    CMP #<$CD ;hides 'CMP $10A2'
A2 10    LDX #16
CA      DEX
10 FA    BPL *-4</pre>||Clobbers X, Z&N, and C
|-
|<pre>A2 2C    LDX #<$2C ;hides 'BIT $10A2'
A2 10    LDX #16
CA      DEX
10 FA    BPL *-4</pre>||Clobbers X, Z&N, and V
|-
|<pre>A9 AD    LDA #<$AD ;hides 'LDA $90A2'
A2 90    LDX #144
CA      DEX
30 FA    BMI *-4</pre>||Clobbers A, X, and Z&N
|-
|<pre>C9 CD    CMP #<$CD ;hides 'CMP $EFA0'
A0 EF    LDY #239
C8      INY
D0 FA    BNE *-4</pre>||Clobbers Y, Z&N, and C
|-
|<pre>A0 2C    LDY #<$2C ;hides 'BIT $6FA0'
A0 6F    LDY #111
C8      INY
10 FA    BPL *-4</pre>||Clobbers Y, Z&N, and V
|-
|<pre>A9 AD    LDA #<$AD ;hides 'LDA $EFA0'
A0 EF    LDY #239
C8      INY
D0 FA    BNE *-4</pre>||Clobbers A, Y, and Z&N
|-
|<pre>A0 AC    LDY #<$AC ;hides 'LDY $6FA2'
A2 6F    LDX #111
E8      INX
10 FA    BPL *-4</pre>||Clobbers X, Y, and Z&N
|-
|<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 1C    LDY #28
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF
|-
|<pre>48      PHA
A9 76    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 76    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>80 0C    NOP #<$0C ;hides 'NOP $90A2'
A2 90    LDX #144
CA      DEX
30 FA    BMI *-4</pre>||Clobbers X, and Z&N; and requires support for unofficial opcodes
|-
|<pre>80 0C    NOP #<$0C ;hides 'NOP $90A0'
A0 90    LDY #144
88      DEY
30 FA    BMI *-4</pre>||Clobbers Y, and Z&N; and requires support for unofficial opcodes
|-
|<pre>68      PLA
18      CLC
A9 E9    LDA #$E9 ;hides 'SBC #$9A'
9A      TXS ;first loop only
D0 FC    BNE *-2</pre>||Clobbers A, S, Z&N, C, and V
|-
|<pre>48  ... PHA      × 2
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48  ... PHA      × 2
A0 1C    LDY #28
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, S, and Z&N; and writes in stack
|-
!colspan="2"|8 bytes
|-
|<pre>98      TYA
A0 14    LDY #20
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>EA  ... NOP      × 3
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA  ... NOP      × 3
A0 1C    LDY #28
88      DEY
10 FD    BPL *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>48      PHA
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 2
08      PHP
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>EA  ... NOP      × 2
08      PHP
A0 1C    LDY #28
88      DEY
D0 FD    BNE *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>84 xx    STY @zptemp
A0 1C    LDY #28
88      DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>08      PHP
48      PHA
A9 6F    LDA #111
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
!colspan="2"|10 bytes
|-
|<pre>08      PHP
48      PHA
38      SEC
A9 E9    LDA #$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 FC    BPL *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|76 bytes
|-
|<pre>EA  ... NOP      × 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 7E    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 FC    BNE *-2</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 1C    LDY #28
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<pre>48      PHA
A9 77    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 77    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 1C    LDY #28
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 $A5
98      TYA
A0 1C    LDY #28
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, and Z&N
|-
|<pre>08      PHP
48      PHA
A9 70    LDA #112
20 xx xx JSR delay_a_25_clocks
68      PLA
28      PLP</pre>||Requires delay_a_25_clocks; and writes in stack
|-
|<pre>48  ... PHA      × 2
18      CLC
A9 EB    LDA #$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      × 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      × 2
38      SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FC    BNE *-2
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 FC    BNE *-2
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      × 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      × 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      × 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>EA  ... NOP      × 2
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"|77 bytes
|-
|<pre>18  ... CLC      × 75
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 75
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 75
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 75
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|78 bytes
|-
|<pre>EA  ... NOP      × 75
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 154 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 7F    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 1E    LDX #30
CA      DEX
D0 FD    BNE *-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 1E    LDX #30
CA      DEX
D0 FD    BNE *-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 78    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 78    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    × 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 1C    LDY #28
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|9 bytes
|-
|<pre>EA  ... NOP      × 2
98      TYA
A0 1C    LDY #28
88      DEY
10 FD    BPL *-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 71    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      × 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      × 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      × 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      × 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 14    LDY #20
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 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      × 77</pre>||No requirements
|-
|}
 
 
=== 155 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 80    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 79    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 79    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 15    LDX #21
EA      NOP
CA      DEX
D0 FC    BNE *-2
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 14    LDY #20
EA      NOP
88      DEY
10 FC    BPL *-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 FC    BNE *-2
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 FC    BNE *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 72    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      × 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      × 76
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 76
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 76
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 76
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|79 bytes
|-
|<pre>EA  ... NOP      × 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 1F    LDX #31
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A0 1F    LDY #31
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>48      PHA
A9 7A    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 7A    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 #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3</pre>||Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
|-
|<pre>48      PHA
08      PHP
A2 1D    LDX #29
CA      DEX
D0 FD    BNE *-1
28      PLP</pre>||Clobbers X, and S; and writes in stack
|-
|<pre>48      PHA
08      PHP
A0 1C    LDY #28
88      DEY
10 FD    BPL *-1
28      PLP</pre>||Clobbers Y, and S; and writes in stack
|-
!colspan="2"|9 bytes
|-
|<pre>8C      TXA
C9 CD    CMP #<$CD ;hides 'CMP $10A2'
A2 10    LDX #16
CA      DEX
10 FA    BPL *-4
AA      TAX</pre>||Clobbers A, Z&N, and C
|-
|<pre>8C      TXA
A2 2C    LDX #<$2C ;hides 'BIT $10A2'
A2 10    LDX #16
CA      DEX
10 FA    BPL *-4
AA      TAX</pre>||Clobbers A, Z&N, and V
|-
|<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 1C    LDY #28
88      DEY
10 FD    BPL *-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 73    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>98      TYA
80 0C    NOP #<$0C ;hides 'NOP $90A0'
A0 90    LDY #144
88      DEY
30 FA    BMI *-4
A8      TAY</pre>||Clobbers A, and Z&N; and requires support for unofficial opcodes
|-
|<pre>EA      NOP
68      PLA
98      TYA
A0 1C    LDY #28
88      DEY
10 FD    BPL *-1
A8      TAY</pre>||Clobbers A, S, and Z&N
|-
!colspan="2"|10 bytes
|-
|<pre>EA  ... NOP      × 3
98      TYA
A0 1C    LDY #28
88      DEY
10 FD    BPL *-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      × 3
18      CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A      NOP ;first loop only
D0 FC    BNE *-2
68      PLA</pre>||Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
|-
|<pre>48  ... PHA      × 2
08      PHP
18      CLC
A9 EB    LDA #$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      × 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      × 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      × 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      × 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      × 2
84 xx    STY @zptemp
A0 1C    LDY #28
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 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 \ × 13
76 36    ROR $36,X /</pre>||Clobbers Z&N
|-
!colspan="2"|78 bytes
|-
|<pre>EA  ... NOP      × 78</pre>||No requirements
|-
|}
 
 
=== 157 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 82    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 7B    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 7B    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 1C    LDY #28
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>08      PHP
98      TYA
A0 1C    LDY #28
88      DEY
10 FD    BPL *-1
A8      TAY
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>EA  ... NOP      × 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      × 2
08      PHP
A0 1C    LDY #28
88      DEY
10 FD    BPL *-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 74    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 FC    BNE *-2
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|79 bytes
|-
|<pre>18  ... CLC      × 77
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 77
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 77
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 77
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|80 bytes
|-
|<pre>EA  ... NOP      × 77
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 158 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 83    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 1F    LDX #31
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>EA      NOP
A0 1F    LDY #31
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>08      PHP
A2 1E    LDX #30
CA      DEX
D0 FD    BNE *-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 7C    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 7C    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 75    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      \ × 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 #$4A ;hides 'LSR A'
08      PHP      \ × 2
28      PLP      /
D0 F9    BNE *-5
28      PLP</pre>||Clobbers A; and writes in stack
|-
!colspan="2"|11 bytes
|-
|<pre>48      PHA
8C      TXA
A2 1C    LDX #28
CA      DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA      TAX
68      PLA</pre>||Clobbers Z&N; requires @zptemp; and writes in stack
|-
|<pre>86 xx    STX @zptemp
C9 CD    CMP #<$CD ;hides 'CMP $10A2'
A2 10    LDX #16
CA      DEX
10 FA    BPL *-4
A6 xx    LDX @zptemp</pre>||Clobbers Z&N, and C; and requires @zptemp
|-
|<pre>86 xx    STX @zptemp
A2 2C    LDX #<$2C ;hides 'BIT $10A2'
A2 10    LDX #16
CA      DEX
10 FA    BPL *-4
A6 xx    LDX @zptemp</pre>||Clobbers Z&N, and V; and requires @zptemp
|-
|<pre>F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 1C    LDY #28
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
80 0C    NOP #<$0C ;hides 'NOP $90A0'
A0 90    LDY #144
88      DEY
30 FA    BMI *-4
A4 xx    LDY @zptemp</pre>||Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
|-
|<pre>48  ... PHA      × 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
|-
!colspan="2"|12 bytes
|-
|<pre>EA  ... NOP      × 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      × 3
84 xx    STY @zptemp
A0 1C    LDY #28
88      DEY
10 FD    BPL *-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      × 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      × 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      × 79</pre>||No requirements
|-
|}
 
 
=== 159 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 84    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 1F    LDX #31
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, S, and Z&N; and writes in stack
|-
|<pre>48      PHA
A0 1F    LDY #31
88      DEY
D0 FD    BNE *-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 1F    LDX #31
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers X, and Z&N
|-
|<pre>A4 A4    LDY $A4
A0 1F    LDY #31
88      DEY
D0 FD    BNE *-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 7D    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 7D    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>08      PHP
A2 2C    LDX #<$2C ;hides 'BIT $10A2'
A2 10    LDX #16
CA      DEX
10 FA    BPL *-4
28      PLP</pre>||Clobbers X; and writes in stack
|-
|<pre>08      PHP
A0 2C    LDY #<$2C ;hides 'BIT $6FA0'
A0 6F    LDY #111
C8      INY
10 FA    BPL *-4
28      PLP</pre>||Clobbers Y; and writes in stack
|-
|<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
48      PHA
A9 76    LDA #118
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 14    LDY #20
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 14    LDY #20
EA      NOP
88      DEY
10 FC    BPL *-2
A8      TAY
28      PLP</pre>||Clobbers A; 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      × 78
90 00    BCC *+2</pre>||Clobbers C
|-
|<pre>B8  ... CLV      × 78
50 00    BVC *+2</pre>||Clobbers V
|-
|<pre>EA  ... NOP      × 78
85 xx    STA @zptemp</pre>||Requires @zptemp
|-
|<pre>EA  ... NOP      × 78
04 04    NOP $04</pre>||Requires support for unofficial opcodes
|-
!colspan="2"|81 bytes
|-
|<pre>EA  ... NOP      × 78
4C xx xx JMP *+3</pre>||Not relocatable code
|-
|}
 
 
=== 160 cycles ===
{| class="wikitable testtable"
!colspan="2"|5 bytes
|-
|<pre>A9 85    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 1F    LDX #31
CA      DEX
D0 FD    BNE *-1</pre>||Clobbers A, X, S, and Z&N
|-
|<pre>68      PLA
A0 1F    LDY #31
88      DEY
D0 FD    BNE *-1</pre>||Clobbers A, Y, S, and Z&N
|-
!colspan="2"|7 bytes
|-
|<pre>98      TYA
A0 1F    LDY #31
88      DEY
D0 FD    BNE *-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      × 2
A2 1F    LDX #31
CA      DEX
D0 FD    BNE *-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      × 2
A0 1F    LDY #31
88      DEY
D0 FD    BNE *-1</pre>||Clobbers Y, and Z&N
|-
|<pre>48      PHA
A9 7E    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 7E    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 FC    BNE *-2
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 FC    BNE *-2
28      PLP</pre>||Clobbers A; and writes in stack
|-
|<pre>08      PHP
48      PHA
A9 77    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      × 2
98      TYA
A0 1C    LDY #28
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 1C    LDY #28
88      DEY
10 FD    BPL *-1
A8      TAY
68      PLA</pre>||Clobbers Z&N; and writes in stack
|-
|<pre>86 xx    STX @zptemp
A6 A6    LDX $A6
A2 1E    LDX #30
CA      DEX
D0 FD    BNE *-1
A6 xx    LDX @zptemp</pre>||Clobbers Z&N; and requires @zptemp
|-
|<pre>48      PHA
08      PHP
48      PHA
18      CLC
A9 EB    LDA #$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 FC    BNE *-2
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      × 2
10 FA    BPL *-4
A8      TAY
68      PLA
28      PLP</pre>||Writes in stack
|-
!colspan="2"|64 bytes
|-
|<pre>26 26    ROL $26  \ × 16
66 26    ROR $26  /</pre>||Clobbers Z&N
|-
!colspan="2"|80 bytes
|-
|<pre>EA  ... NOP      × 80</pre>||No requirements
|-
|}
 


== 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.

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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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