Fixed cycle delay: Difference between revisions

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Instructions, addressing modes, byte counts, cycle counts and notes:
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
|-
|-
! 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"| 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 !! 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 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.
|-
|-
! 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"| 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>.
|-
|-
! 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>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.
|-
|-
! 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—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.
|-
|-
! 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"| 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.
|-
|-
! 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> || Side-effectwise inferior to same length 2 × <code>NOP</code>, but used in special circumstances.
|-
|-
! 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 done when we can have @zptemp and 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>LDA (@ptrtemp,X)</code> || Only doable when X is known to be 0. Never used by this code.
|-  
|-  
! 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> || Only doable when Y is known to be 0. 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> || Never used by this code.
|-
|-
! 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 useful for hiding 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> || Side-effectwise inferior to same-length 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 done when we know that 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> || Never used by this code.
|}
|}


Revision as of 15:59, 30 March 2016

Delay code

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

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. Code samples where an interrupt could cause data corruption are separately indicated.

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

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:

  • @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 RTI.
  • @rts12 means you know a memory address that contains byte $60 (RTS).
  • @rts14 means you know a memory address that contains a harmless 2-cycle instruction that fits your constraints (such as CLC, LDA #0, or NOP), followed by RTS.
  • @rts15 means you know a memory address that contains a JMP that jumps to another location that contains RTS. Alternatively, it means you know a memory address that contains a harmless 3-cycle instruction that fits your constraints (such as LDA $00), followed by RTS.
  • 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.
  • "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:

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 We use PHP only paired with PLP. We also use PHA in various circumstances.
Implied Stack pop 1 4 PLA RTS does 6 cycles, but we do that indirectly, when paired with JSR. Similarly for RTI.
Immediate 2 2 LDA #1 Includes instructions like LDA, LDX and LDY. Other ALU instructions are used in more complex situations.
Relative Branch 2 2—3 BCC *+2 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.
Zeropage Read, write 2 3 LDA $A5
Zeropage Read-modify-write (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 Side-effectwise inferior to same length 2 × NOP, but used in special circumstances.
Zeropage indexed RMW 2 6 INC @zptemp,X Only done when we can have @zptemp and X is known to be 0, or when entire zeropage can be clobbered.
Indexed indirect Read, write 2 6 LDA (@ptrtemp,X) Only doable when X is known to be 0. Never used by this code.
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 Only doable when Y is known to be 0. Never used by this code.
Indirect indexed Write 2 6 STA (@ptrtemp),Y Never used by this code.
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 useful for hiding additional code to be executed in a loop.
Absolute RMW 3 6 INC $4018 Side-effectwise inferior to same-length 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 done when we know that writing into the given address is harmless considering the possible values of X.
Absolute indirect Jump 3 5 JMP (@ptrtemp) Never used by this code.

{{#css: 

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

}}


2 cycles

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


3 cycles

1 bytes 
48       PHA
 Clobbers S; and writes in stack
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 
85 xx    STA @zptemp
 Requires @zptemp 
04 04    NOP $04
 Requires support for unofficial opcodes
3 bytes 
4C xx xx JMP *+3
 Not relocatable code
  • 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

1 bytes 
68       PLA
 Clobbers A, S, and Z&N
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

2 bytes 
E6 xx    INC @zptemp
 Clobbers Z&N; and requires @zptemp 
EA       NOP
48       PHA
 Clobbers S; and writes in stack
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 
EA       NOP
85 xx    STA @zptemp
 Requires @zptemp 
EA       NOP
04 04    NOP $04
 Requires support for unofficial opcodes
4 bytes 
EA       NOP
4C xx xx JMP *+3
 Not relocatable code
  • 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

2 bytes 
F6 F6    INC $F6,X
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
48   ... PHA      × 2
 Clobbers S; and writes in stack 
EA       NOP
68       PLA
 Clobbers A, S, and Z&N
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
 Writes in stack 
68       PLA
48       PHA
 Clobbers A, and Z&N
3 bytes 
EA       NOP
E6 xx    INC @zptemp
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
 Clobbers Z&N; and requires writable $700-$7FF
4 bytes 
18   ... CLC      × 2
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 2
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 2
A6 A6    LDX $A6
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A4 A4    LDY $A4
 Clobbers Y, and Z&N 
EA   ... NOP      × 2
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 2
04 04    NOP $04
 Requires support for unofficial opcodes
5 bytes 
EA   ... NOP      × 2
4C xx xx JMP *+3
 Not relocatable code
  • 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

2 bytes 
68   ... PLA      × 2
 Clobbers A, S, and Z&N
3 bytes 
BA       TSX
68       PLA
9A       TXS
 Clobbers A, X, and Z&N; and unsafe for interrupts 
EA       NOP
F6 F6    INC $F6,X
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
EA       NOP
48   ... PHA      × 2
 Clobbers S; and writes in stack 
AA       TAX
68       PLA
8C       TXA
 Clobbers X, S, and Z&N 
A8       TAY
68       PLA
98       TYA
 Clobbers Y, S, and Z&N
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
 Writes in stack 
EA       NOP
68       PLA
48       PHA
 Clobbers A, and Z&N
4 bytes 
A2 AE    LDX #$AE  ;hides 'LDX $FDD0'
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 AC    LDY #$AC  ;hides 'LDY $FDD0'
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
EA   ... NOP      × 2
E6 xx    INC @zptemp
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
 Clobbers Z&N; and requires writable $700-$7FF
5 bytes 
18   ... CLC      × 3
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 3
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 3
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 3
04 04    NOP $04
 Requires support for unofficial opcodes
6 bytes 
EA   ... NOP      × 3
4C xx xx JMP *+3
 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

3 bytes 
48       PHA
08       PHP
28       PLP
 Clobbers S; and writes in stack 
EA       NOP
68   ... PLA      × 2
 Clobbers A, S, and Z&N
4 bytes 
08       PHP
C5 C5    CMP $C5
28       PLP
 Writes in stack 
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N
5 bytes 
EA   ... NOP      × 5
 No requirements
  • The ROL-ROR sequence preserves the original value of the memory address. Carry is also preserved.


11 cycles

3 bytes 
68   ... PLA      × 2
48       PHA
 Clobbers A, S, and Z&N
4 bytes 
EA   ... NOP      × 2
08       PHP
28       PLP
 Writes in stack 
EA   ... NOP      × 2
68       PLA
48       PHA
 Clobbers A, and Z&N 
AA       TAX
68       PLA
48       PHA
8C       TXA
 Clobbers X, and Z&N 
A8       TAY
68       PLA
48       PHA
98       TYA
 Clobbers Y, and Z&N 
E6 xx    INC @zptemp
F6 F6    INC $F6,X
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
5 bytes 
E6 xx    INC @zptemp
EA   ... NOP      × 3
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 2
FE 00 02 INC $0200,X
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 2
FE 00 03 INC $0300,X
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 2
FE 00 04 INC $0400,X
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 2
FE 00 05 INC $0500,X
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 2
FE 00 06 INC $0600,X
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 2
FE 00 07 INC $0700,X
 Clobbers Z&N; and requires writable $700-$7FF
6 bytes 
18   ... CLC      × 4
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 4
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 4
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 4
04 04    NOP $04
 Requires support for unofficial opcodes
7 bytes 
EA   ... NOP      × 4
4C xx xx JMP *+3
 Not relocatable code


12 cycles

3 bytes 
20 xx xx JSR @rts12
 Requires @rts12; and writes in stack 
68   ... PLA      × 3
 Clobbers A, S, and Z&N
4 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N 
08       PHP
E6 xx    INC @zptemp
28       PLP
 Requires @zptemp; and writes in stack 
48   ... PHA      × 4
 Clobbers S; and writes in stack
5 bytes 
08       PHP
18       CLC
90 00    BCC *+2
28       PLP
 Writes in stack
6 bytes 
EA   ... NOP      × 6
 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

2 bytes 
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack
4 bytes 
08       PHP
F6 F6    INC $F6,X
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
F6 F6    INC $F6,X
68       PLA
48       PHA
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF 
48   ... PHA      × 2
08       PHP
28       PLP
 Clobbers S; and writes in stack 
EA       NOP
68   ... PLA      × 2
48       PHA
 Clobbers A, S, and Z&N
5 bytes 
EA   ... NOP      × 3
08       PHP
28       PLP
 Writes in stack 
EA   ... NOP      × 3
68       PLA
48       PHA
 Clobbers A, and Z&N 
EA       NOP
AA       TAX
68       PLA
48       PHA
8C       TXA
 Clobbers X, and Z&N 
EA       NOP
A8       TAY
68       PLA
48       PHA
98       TYA
 Clobbers Y, and Z&N 
EA       NOP
E6 xx    INC @zptemp
F6 F6    INC $F6,X
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
6 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N, and V 
85 xx    STA @zptemp
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 3
FE 00 02 INC $0200,X
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 3
FE 00 03 INC $0300,X
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 3
FE 00 04 INC $0400,X
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 3
FE 00 05 INC $0500,X
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 3
FE 00 06 INC $0600,X
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 3
FE 00 07 INC $0700,X
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires support for unofficial opcodes
7 bytes 
18   ... CLC      × 5
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 5
50 00    BVC *+2
 Clobbers V 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and not relocatable code 
EA   ... NOP      × 5
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 5
04 04    NOP $04
 Requires support for unofficial opcodes
8 bytes 
EA   ... NOP      × 5
4C xx xx JMP *+3
 Not relocatable code


14 cycles

3 bytes 
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack
4 bytes 
08       PHP       \ × 2
28       PLP       /
 Writes in stack 
68       PLA       \ × 2
48       PHA       /
 Clobbers A, and Z&N
5 bytes 
EA       NOP
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N
7 bytes 
EA   ... NOP      × 7
 No requirements


15 cycles

3 bytes 
20 xx xx JSR @rts15
 Requires @rts12, and @rts15; and writes in stack 
EA       NOP
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack
4 bytes 
68       PLA
48       PHA
68   ... PLA      × 2
 Clobbers A, S, and Z&N 
48       PHA
20 xx xx JSR @rts12
 Clobbers S; requires @rts12; and writes in stack
5 bytes 
08       PHP
BA       TSX
28       PLP
9A       TXS
28       PLP
 Clobbers X; and writes in stack 
68       PLA
48       PHA
BA       TSX
68       PLA
9A       TXS
 Clobbers A, X, and Z&N; and unsafe for interrupts 
EA       NOP
08       PHP
F6 F6    INC $F6,X
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
68       PLA
48       PHA
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF 
C5 C5    CMP $C5
20 xx xx JSR @rts12
 Clobbers Z&N, and C; requires @rts12; and writes in stack 
24 24    BIT $24
20 xx xx JSR @rts12
 Clobbers Z&N, and V; requires @rts12; and writes in stack 
A5 A5    LDA $A5
20 xx xx JSR @rts12
 Clobbers A, and Z&N; requires @rts12; and writes in stack 
A4 A4    LDY $A4
20 xx xx JSR @rts12
 Clobbers Y, and Z&N; requires @rts12; and writes in stack 
85 xx    STA @zptemp
20 xx xx JSR @rts12
 Requires @zptemp, and @rts12; and writes in stack 
04 04    NOP $04
20 xx xx JSR @rts12
 Requires @rts12, and support for unofficial opcodes; and writes in stack 
48   ... PHA      × 5
 Clobbers S; and writes in stack 
AA       TAX
68   ... PLA      × 2
48       PHA
8C       TXA
 Clobbers X, S, and Z&N 
A8       TAY
68   ... PLA      × 2
48       PHA
98       TYA
 Clobbers Y, S, and Z&N
6 bytes 
08       PHP
28       PLP
EA   ... NOP      × 4
 Writes in stack 
C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and V 
A5 A5    LDA $A5
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers A, and Z&N 
A6 A6    LDX $A6
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers X, and Z&N 
A4 A4    LDY $A4
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Y, and Z&N 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires @zptemp 
04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires support for unofficial opcodes
7 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and not relocatable code 
FE 00 02 INC $0200,X
EA   ... NOP      × 4
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
EA   ... NOP      × 4
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
EA   ... NOP      × 4
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
EA   ... NOP      × 4
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
EA   ... NOP      × 4
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
EA   ... NOP      × 4
 Clobbers Z&N; and requires writable $700-$7FF
8 bytes 
18   ... CLC      × 6
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 6
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 6
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 6
04 04    NOP $04
 Requires support for unofficial opcodes
9 bytes 
EA   ... NOP      × 6
4C xx xx JMP *+3
 Not relocatable code


16 cycles

3 bytes 
48       PHA
00 00    BRK 0
 Clobbers S; requires dummy interrupt handler; and writes in stack
4 bytes 
EA       NOP
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
C5 C5    CMP $C5
00 00    BRK 0
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
24 24    BIT $24
00 00    BRK 0
 Clobbers Z&N, and V; requires dummy interrupt handler; and writes in stack 
A5 A5    LDA $A5
00 00    BRK 0
 Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack 
A6 A6    LDX $A6
00 00    BRK 0
 Clobbers X, and Z&N; requires dummy interrupt handler; and writes in stack 
A4 A4    LDY $A4
00 00    BRK 0
 Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack 
85 xx    STA @zptemp
00 00    BRK 0
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
04 04    NOP $04
00 00    BRK 0
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
68   ... PLA      × 4
 Clobbers A, S, and Z&N
5 bytes 
EA       NOP
08       PHP       \ × 2
28       PLP       /
 Writes in stack 
EA       NOP
68       PLA       \ × 2
48       PHA       /
 Clobbers A, and Z&N 
A2 02    LDX #2
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 03    LDY #3
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
6 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N
8 bytes 
EA   ... NOP      × 8
 No requirements


17 cycles

3 bytes 
68       PLA
00 00    BRK 0
 Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
4 bytes 
EA       NOP
20 xx xx JSR @rts15
 Requires @rts12, and @rts15; and writes in stack 
EA   ... NOP      × 2
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack 
48       PHA
20 xx xx JSR @rts14
 Clobbers S; requires @rts12, and @rts14; and writes in stack
5 bytes 
E6 xx    INC @zptemp
20 xx xx JSR @rts12
 Clobbers Z&N; requires @zptemp, and @rts12; and writes in stack 
C5 C5    CMP $C5
20 xx xx JSR @rts14
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
24 24    BIT $24
20 xx xx JSR @rts14
 Clobbers Z&N, and V; requires @rts12, and @rts14; and writes in stack 
A5 A5    LDA $A5
20 xx xx JSR @rts14
 Clobbers A, and Z&N; requires @rts12, and @rts14; and writes in stack 
A6 A6    LDX $A6
20 xx xx JSR @rts14
 Clobbers X, and Z&N; requires @rts12, and @rts14; and writes in stack 
A4 A4    LDY $A4
20 xx xx JSR @rts14
 Clobbers Y, and Z&N; requires @rts12, and @rts14; and writes in stack 
85 xx    STA @zptemp
20 xx xx JSR @rts14
 Requires @zptemp, @rts12, and @rts14; and writes in stack 
04 04    NOP $04
20 xx xx JSR @rts14
 Requires @rts12, @rts14, and support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP       \ × 2
28       PLP       /
 Clobbers S; and writes in stack 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 2
 Clobbers A, S, and Z&N
6 bytes 
08       PHP
26 26    ROL $26
66 26    ROR $26
28       PLP
 Writes in stack 
68       PLA
48       PHA
26 26    ROL $26
66 26    ROR $26
 Clobbers A, and Z&N 
E6 xx    INC @zptemp
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires @zptemp 
AA       TAX
EA       NOP
68   ... PLA      × 2
48       PHA
8C       TXA
 Clobbers X, S, and Z&N 
A8       TAY
EA       NOP
68   ... PLA      × 2
48       PHA
98       TYA
 Clobbers Y, S, and Z&N
7 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and V 
EA       NOP
A6 A6    LDX $A6
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers X, and Z&N 
EA       NOP
A4 A4    LDY $A4
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Y, and Z&N 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires support for unofficial opcodes
8 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and not relocatable code
9 bytes 
18   ... CLC      × 7
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 7
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 7
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 7
04 04    NOP $04
 Requires support for unofficial opcodes
10 bytes 
EA   ... NOP      × 7
4C xx xx JMP *+3
 Not relocatable code


18 cycles

4 bytes 
E6 xx    INC @zptemp
00 00    BRK 0
 Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack 
48       PHA
20 xx xx JSR @rts15
 Clobbers S; requires @rts12, and @rts15; and writes in stack 
68       PLA
20 xx xx JSR @rts14
 Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack 
EA       NOP
48       PHA
00 00    BRK 0
 Clobbers S; requires dummy interrupt handler; and writes in stack
5 bytes 
F6 F6    INC $F6,X
20 xx xx JSR @rts12
 Clobbers Z&N; requires @zptemp, @rts12, and writable $00-$FF; and writes in stack 
EA   ... NOP      × 2
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
C5 C5    CMP $C5
20 xx xx JSR @rts15
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
24 24    BIT $24
20 xx xx JSR @rts15
 Clobbers Z&N, and V; requires @rts12, and @rts15; and writes in stack 
A5 A5    LDA $A5
20 xx xx JSR @rts15
 Clobbers A, and Z&N; requires @rts12, and @rts15; and writes in stack 
A6 A6    LDX $A6
20 xx xx JSR @rts15
 Clobbers X, and Z&N; requires @rts12, and @rts15; and writes in stack 
A4 A4    LDY $A4
20 xx xx JSR @rts15
 Clobbers Y, and Z&N; requires @rts12, and @rts15; and writes in stack 
85 xx    STA @zptemp
20 xx xx JSR @rts15
 Requires @zptemp, @rts12, and @rts15; and writes in stack 
A9 00    LDA #0
20 xx xx JSR delay_256a_16_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack 
04 04    NOP $04
20 xx xx JSR @rts15
 Requires @rts12, @rts15, and support for unofficial opcodes; and writes in stack 
18       CLC
90 00    BCC *+2
00 00    BRK 0
 Clobbers C; requires dummy interrupt handler; and writes in stack 
B8       CLV
50 00    BVC *+2
00 00    BRK 0
 Clobbers V; requires dummy interrupt handler; and writes in stack 
EA       NOP
A5 A5    LDA $A5
00 00    BRK 0
 Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack 
EA       NOP
A6 A6    LDX $A6
00 00    BRK 0
 Clobbers X, and Z&N; requires dummy interrupt handler; and writes in stack 
EA       NOP
A4 A4    LDY $A4
00 00    BRK 0
 Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack 
EA       NOP
85 xx    STA @zptemp
00 00    BRK 0
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
EA       NOP
04 04    NOP $04
00 00    BRK 0
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
EA       NOP
68   ... PLA      × 4
 Clobbers A, S, and Z&N 
48   ... PHA      × 2
20 xx xx JSR @rts12
 Clobbers S; requires @rts12; and writes in stack
6 bytes 
EA   ... NOP      × 2
08       PHP       \ × 2
28       PLP       /
 Writes in stack 
EA   ... NOP      × 2
68       PLA       \ × 2
48       PHA       /
 Clobbers A, and Z&N 
EA       NOP
A2 02    LDX #2
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 03    LDY #3
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
F6 F6... INC $F6,X× 3
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
7 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N
9 bytes 
EA   ... NOP      × 9
 No requirements


19 cycles

4 bytes 
F6 F6    INC $F6,X
00 00    BRK 0
 Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
68       PLA
20 xx xx JSR @rts15
 Clobbers A, S, and Z&N; requires @rts12, and @rts15; and writes in stack 
48   ... PHA      × 2
00 00    BRK 0
 Clobbers S; requires dummy interrupt handler; and writes in stack
5 bytes 
08       PHP
28       PLP
20 xx xx JSR @rts12
 Requires @rts12; and writes in stack 
EA   ... NOP      × 3
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack 
68       PLA
48       PHA
68   ... PLA      × 3
 Clobbers A, S, and Z&N
6 bytes 
08       PHP
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 Writes in stack 
68       PLA
48       PHA
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers A, and Z&N 
AA       TAX
68       PLA
48       PHA
68   ... PLA      × 2
8C       TXA
 Clobbers X, S, and Z&N 
A8       TAY
68       PLA
48       PHA
68   ... PLA      × 2
98       TYA
 Clobbers Y, S, and Z&N
7 bytes 
A6 A6    LDX $A6
A2 02    LDX #2
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 03    LDY #3
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $700-$7FF
8 bytes 
C5 C5    CMP $C5
EA   ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and C 
24 24    BIT $24
EA   ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and V 
04 04    NOP $04
EA   ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires support for unofficial opcodes
9 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and not relocatable code
10 bytes 
18   ... CLC      × 8
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 8
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 8
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 8
04 04    NOP $04
 Requires support for unofficial opcodes
11 bytes 
EA   ... NOP      × 8
4C xx xx JMP *+3
 Not relocatable code


20 cycles

4 bytes 
08       PHP
28       PLP
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack
5 bytes 
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C 
E6 xx    INC @zptemp
20 xx xx JSR @rts15
 Clobbers Z&N; requires @zptemp, @rts12, and @rts15; and writes in stack 
F6 F6    INC $F6,X
20 xx xx JSR @rts14
 Clobbers Z&N; requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack 
68   ... PLA      × 5
 Clobbers A, S, and Z&N 
48   ... PHA      × 2
20 xx xx JSR @rts14
 Clobbers S; requires @rts12, and @rts14; and writes in stack 
EA       NOP
48       PHA
20 xx xx JSR @rts15
 Clobbers S; requires @rts12, and @rts15; and writes in stack
6 bytes 
BA       TSX
68   ... PLA      × 4
9A       TXS
 Clobbers A, X, and Z&N; and unsafe for interrupts 
08       PHP
48       PHA
F6 F6    INC $F6,X
68       PLA
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
F6 F6    INC $F6,X
68       PLA       \ × 2
48       PHA       /
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF 
EA   ... NOP      × 3
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
18       CLC
90 00    BCC *+2
20 xx xx JSR @rts15
 Clobbers C; requires @rts12, and @rts15; and writes in stack 
B8       CLV
50 00    BVC *+2
20 xx xx JSR @rts15
 Clobbers V; requires @rts12, and @rts15; and writes in stack 
EA       NOP
A5 A5    LDA $A5
20 xx xx JSR @rts15
 Clobbers A, and Z&N; requires @rts12, and @rts15; and writes in stack 
EA       NOP
A6 A6    LDX $A6
20 xx xx JSR @rts15
 Clobbers X, and Z&N; requires @rts12, and @rts15; and writes in stack 
EA       NOP
A4 A4    LDY $A4
20 xx xx JSR @rts15
 Clobbers Y, and Z&N; requires @rts12, and @rts15; and writes in stack 
EA       NOP
85 xx    STA @zptemp
20 xx xx JSR @rts15
 Requires @zptemp, @rts12, and @rts15; and writes in stack 
EA       NOP
04 04    NOP $04
20 xx xx JSR @rts15
 Requires @rts12, @rts15, and support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
08       PHP       \ × 2
28       PLP       /
 Clobbers S; and writes in stack 
AA       TAX
68   ... PLA      × 4
8C       TXA
 Clobbers X, S, and Z&N 
A8       TAY
68   ... PLA      × 4
98       TYA
 Clobbers Y, S, and Z&N
7 bytes 
EA   ... NOP      × 3
08       PHP       \ × 2
28       PLP       /
 Writes in stack 
98       TYA
A0 03    LDY #3
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 02    LDX #2
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 03    LDY #3
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
EA       NOP
F6 F6... INC $F6,X× 3
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
8 bytes 
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N
10 bytes 
EA   ... NOP      × 10
 No requirements


21 cycles

4 bytes 
68   ... PLA      × 2
00 00    BRK 0
 Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
5 bytes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
 Clobbers A, Z&N, and C 
A2 03    LDX #3
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
08       PHP
28       PLP
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
F6 F6    INC $F6,X
20 xx xx JSR @rts15
 Clobbers Z&N; requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
00 00    BRK 0
 Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
48   ... PHA      × 2
20 xx xx JSR @rts15
 Clobbers S; requires @rts12, and @rts15; and writes in stack 
EA       NOP
48   ... PHA      × 2
00 00    BRK 0
 Clobbers S; requires dummy interrupt handler; and writes in stack
6 bytes 
08       PHP       \ × 3
28       PLP       /
 Writes in stack 
68       PLA       \ × 3
48       PHA       /
 Clobbers A, and Z&N
8 bytes 
EA   ... NOP      × 2
E6 xx    INC @zptemp
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $700-$7FF
9 bytes 
C5 C5    CMP $C5
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and C 
24 24    BIT $24
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and V 
04 04    NOP $04
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires support for unofficial opcodes
10 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and not relocatable code
11 bytes 
18   ... CLC      × 9
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 9
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 9
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 9
04 04    NOP $04
 Requires support for unofficial opcodes
12 bytes 
EA   ... NOP      × 9
4C xx xx JMP *+3
 Not relocatable code


22 cycles

5 bytes 
08       PHP
28       PLP
20 xx xx JSR @rts15
 Requires @rts12, and @rts15; and writes in stack 
EA       NOP
08       PHP
28       PLP
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack 
68   ... PLA      × 2
20 xx xx JSR @rts14
 Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack
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 
EA       NOP
F6 F6    INC $F6,X
20 xx xx JSR @rts14
 Clobbers Z&N; requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack 
EA       NOP
68   ... PLA      × 5
 Clobbers A, S, and Z&N 
48       PHA
08       PHP
28       PLP
20 xx xx JSR @rts12
 Clobbers S; requires @rts12; and writes in stack
7 bytes 
08       PHP
BA       TSX
08       PHP
28   ... PLP      × 2
9A       TXS
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
48       PHA
F6 F6    INC $F6,X
68       PLA
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
68       PLA       \ × 2
48       PHA       /
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF 
08       PHP
C5 C5    CMP $C5
28       PLP
20 xx xx JSR @rts12
 Requires @rts12; and writes in stack 
48       PHA
08       PHP
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 Clobbers S; and writes in stack
8 bytes 
08       PHP
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 Writes in stack 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N
11 bytes 
EA   ... NOP      × 11
 No requirements


23 cycles

5 bytes 
A9 2A    LDA #$2A ;hides 'ROL A'
48       PHA
10 FC    BPL *-2
 Clobbers A, S, Z&N, and C; and writes in stack 
68   ... PLA      × 2
20 xx xx JSR @rts15
 Clobbers A, S, and Z&N; requires @rts12, and @rts15; and writes in stack 
48       PHA
08       PHP
28       PLP
00 00    BRK 0
 Clobbers S; requires dummy interrupt handler; and writes in stack
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 03    LDX #3
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
EA       NOP
08       PHP
28       PLP
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
20 xx xx JSR @rts15
 Clobbers Z&N; requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack 
08       PHP
C5 C5    CMP $C5
28       PLP
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack 
68       PLA
48       PHA
68   ... PLA      × 4
 Clobbers A, S, and Z&N 
EA       NOP
48   ... PHA      × 2
20 xx xx JSR @rts15
 Clobbers S; requires @rts12, and @rts15; and writes in stack
7 bytes 
EA       NOP
08       PHP       \ × 3
28       PLP       /
 Writes in stack 
EA       NOP
68       PLA       \ × 3
48       PHA       /
 Clobbers A, and Z&N
8 bytes 
E6 xx    INC @zptemp
F6 F6... INC $F6,X× 3
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
9 bytes 
E6 xx    INC @zptemp
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 2
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 2
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 2
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 2
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 2
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 2
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $700-$7FF
10 bytes 
C5 C5    CMP $C5
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires support for unofficial opcodes
11 bytes 
4C xx xx JMP *+3
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and not relocatable code
12 bytes 
18   ... CLC      × 10
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 10
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 10
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 10
04 04    NOP $04
 Requires support for unofficial opcodes
13 bytes 
EA   ... NOP      × 10
4C xx xx JMP *+3
 Not relocatable code


24 cycles

4 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C
5 bytes 
48       PHA
68   ... PLA      × 2
00 00    BRK 0
 Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
6 bytes 
20 xx xx JSR @rts12× 2
 Requires @rts12; and writes in stack 
EA   ... NOP      × 2
08       PHP
28       PLP
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack 
68   ... PLA      × 6
 Clobbers A, S, and Z&N 
48       PHA
A2 03    LDX #3
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 03    LDX #3
CA       DEX
10 FD    BPL *-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 
48       PHA
08       PHP       \ × 3
28       PLP       /
 Clobbers S; and writes in stack
8 bytes 
08       PHP
48       PHA
26 26    ROL $26
66 26    ROR $26
68       PLA
28       PLP
 Writes in stack 
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N
12 bytes 
EA   ... NOP      × 12
 No requirements


25 cycles

5 bytes 
20 xx xx JSR @rts12
00 00    BRK 0
 Requires dummy interrupt handler, and @rts12; and writes in stack 
68   ... PLA      × 3
00 00    BRK 0
 Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
6 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
00 00    BRK 0
 Clobbers Z&N; requires dummy interrupt handler; and writes in stack 
08       PHP
E6 xx    INC @zptemp
28       PLP
00 00    BRK 0
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
68       PLA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
 Clobbers A, S, Z&N, and C 
A2 02    LDX #2
48       PHA
CA       DEX
10 FC    BPL *-2
 Clobbers X, S, and Z&N; and writes in stack 
68       PLA
A2 03    LDX #3
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
A0 03    LDY #3
48       PHA
88       DEY
D0 FC    BNE *-2
 Clobbers Y, S, and Z&N; and writes in stack 
68       PLA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N 
48       PHA
08       PHP
28       PLP
20 xx xx JSR @rts15
 Clobbers S; requires @rts12, and @rts15; and writes in stack 
48       PHA
68   ... PLA      × 2
20 xx xx JSR @rts14
 Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack 
48   ... PHA      × 4
00 00    BRK 0
 Clobbers S; requires dummy interrupt handler; and writes in stack
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 03    LDX #3
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
20 xx xx JSR @rts12
08       PHP
F6 F6    INC $F6,X
28       PLP
 Requires @zptemp, @rts12, and writable $00-$FF; and writes in stack 
EA   ... NOP      × 2
08       PHP
28       PLP
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
08       PHP
C5 C5    CMP $C5
28       PLP
20 xx xx JSR @rts15
 Requires @rts12, and @rts15; and writes in stack 
48       PHA
A9 00    LDA #0
20 xx xx JSR delay_256a_16_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack 
08       PHP
A9 00    LDA #0
20 xx xx JSR delay_256a_16_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack 
EA       NOP
08       PHP
C5 C5    CMP $C5
28       PLP
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
08       PHP
28       PLP
20 xx xx JSR @rts12
 Clobbers S; requires @rts12; and writes in stack
8 bytes 
EA   ... NOP      × 2
08       PHP       \ × 3
28       PLP       /
 Writes in stack
9 bytes 
EA       NOP
E6 xx    INC @zptemp
F6 F6... INC $F6,X× 3
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
85 xx    STA @zptemp
68       PLA
48       PHA
68   ... PLA      × 3
A5 xx    LDA @zptemp
 Clobbers S, and Z&N; and requires @zptemp
10 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 3
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 3
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 3
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 3
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 3
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 3
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires support for unofficial opcodes
11 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and not relocatable code
13 bytes 
18   ... CLC      × 11
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 11
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 11
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 11
04 04    NOP $04
 Requires support for unofficial opcodes
14 bytes 
EA   ... NOP      × 11
4C xx xx JMP *+3
 Not relocatable code


26 cycles

4 bytes 
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack
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 04    LDY #4
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
6 bytes 
20 xx xx JSR @rts12
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
48       PHA
68   ... PLA      × 2
20 xx xx JSR @rts15
 Clobbers A, S, and Z&N; requires @rts12, and @rts15; and writes in stack
7 bytes 
EA       NOP
20 xx xx JSR @rts12× 2
 Requires @rts12; and writes in stack 
EA       NOP
68   ... PLA      × 6
 Clobbers A, S, and Z&N
8 bytes 
08       PHP
48       PHA
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA
28       PLP
 Writes in stack 
98       TYA
A0 03    LDY #3
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, and Z&N
9 bytes 
EA       NOP
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N
13 bytes 
EA   ... NOP      × 13
 No requirements


27 cycles

5 bytes 
A9 00    LDA #0
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, S, Z&N, and C; and writes in stack
6 bytes 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C 
20 xx xx JSR @rts12
20 xx xx JSR @rts15
 Requires @rts12, and @rts15; and writes in stack 
00 00    BRK 0
08       PHP       \ × 2
28       PLP       /
 Requires dummy interrupt handler; and writes in stack
7 bytes 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
C5 CD    CMP <$CD ;hides 'CMP $03A2'
A2 03    LDX #3
CA       DEX
D0 FA    BNE *-4
 Clobbers X, Z&N, and C 
24 2C    BIT <$2C ;hides 'BIT $03A2'
A2 03    LDX #3
CA       DEX
D0 FA    BNE *-4
 Clobbers X, Z&N, and V 
A5 AD    LDA <$AD ;hides 'LDA $02A2'
A2 02    LDX #2
CA       DEX
10 FA    BPL *-4
 Clobbers A, X, and Z&N 
C5 CD    CMP <$CD ;hides 'CMP $03A0'
A0 03    LDY #3
88       DEY
D0 FA    BNE *-4
 Clobbers Y, Z&N, and C 
24 2C    BIT <$2C ;hides 'BIT $02A0'
A0 02    LDY #2
88       DEY
10 FA    BPL *-4
 Clobbers Y, Z&N, and V 
A5 AD    LDA <$AD ;hides 'LDA $7DA0'
A0 7D    LDY #125
C8       INY
10 FA    BPL *-4
 Clobbers A, Y, and Z&N 
A4 AC    LDY <$AC ;hides 'LDY $02A2'
A2 02    LDX #2
CA       DEX
10 FA    BPL *-4
 Clobbers X, Y, and Z&N 
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
08       PHP
F6 F6    INC $F6,X
28       PLP
20 xx xx JSR @rts14
 Requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack 
04 0C    NOP <$0C ;hides 'NOP $82A2'
A2 82    LDX #130
CA       DEX
30 FA    BMI *-4
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
04 0C    NOP <$0C ;hides 'NOP $03A0'
A0 03    LDY #3
88       DEY
D0 FA    BNE *-4
 Clobbers Y, and Z&N; and requires support for unofficial opcodes 
68       PLA
48       PHA
68   ... PLA      × 5
 Clobbers A, S, and Z&N 
48   ... PHA      × 2
A2 03    LDX #3
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
48       PHA
20 xx xx JSR @rts12× 2
 Clobbers S; requires @rts12; and writes in stack
8 bytes 
EA       NOP
98       TYA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 3
A2 03    LDX #3
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
08       PHP
F6 F6    INC $F6,X
28       PLP       \ × 2
08       PHP       /
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
24 24    BIT $24
20 xx xx JSR @rts12× 2
 Clobbers Z&N, and V; requires @rts12; and writes in stack 
20 xx xx JSR @rts12
08       PHP
BA       TSX
28       PLP
9A       TXS
28       PLP
 Clobbers X; requires @rts12; and writes in stack 
85 xx    STA @zptemp
20 xx xx JSR @rts12× 2
 Requires @zptemp, and @rts12; and writes in stack 
EA   ... NOP      × 3
08       PHP
28       PLP
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
04 04    NOP $04
20 xx xx JSR @rts12× 2
 Requires @rts12, and support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
08       PHP       \ × 3
28       PLP       /
 Clobbers S; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 6A    LDA #$6A ;hides 'ROR A'
38       SEC
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack 
84 xx    STY @zptemp
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
10 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
11 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code 
FE 00 02 INC $0200,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $700-$7FF
14 bytes 
18   ... CLC      × 12
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 12
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 12
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 12
04 04    NOP $04
 Requires support for unofficial opcodes
15 bytes 
EA   ... NOP      × 12
4C xx xx JMP *+3
 Not relocatable code


28 cycles

5 bytes 
A9 01    LDA #1
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
EA       NOP
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, S, Z&N, and C
6 bytes 
18   ... CLC      × 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 04    LDY #4
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
20 xx xx JSR @rts14× 2
 Requires @rts12, and @rts14; and writes in stack
7 bytes 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 03    LDX #3
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
F6 F6    INC $F6,X
28       PLP
20 xx xx JSR @rts15
 Requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack 
68   ... PLA      × 7
 Clobbers A, S, and Z&N 
48   ... PHA      × 2
08       PHP
28       PLP
20 xx xx JSR @rts15
 Clobbers S; requires @rts12, and @rts15; and writes in stack
8 bytes 
08       PHP       \ × 4
28       PLP       /
 Writes in stack 
68       PLA       \ × 4
48       PHA       /
 Clobbers A, and Z&N
10 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N
14 bytes 
EA   ... NOP      × 14
 No requirements


29 cycles

5 bytes 
A9 02    LDA #2
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
48       PHA
00 00... BRK 0    × 2
 Clobbers S; requires dummy interrupt handler; and writes in stack
6 bytes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
90 FC    BCC *-2
 Clobbers A, Z&N, and C 
A2 03    LDX #3
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N 
20 xx xx JSR @rts14
20 xx xx JSR @rts15
 Requires @rts12, @rts14, and @rts15; and writes in stack 
C5 C5    CMP $C5
00 00... BRK 0    × 2
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
24 24    BIT $24
00 00... BRK 0    × 2
 Clobbers Z&N, and V; requires dummy interrupt handler; and writes in stack 
A5 A5    LDA $A5
00 00... BRK 0    × 2
 Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack 
85 xx    STA @zptemp
00 00... BRK 0    × 2
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
EA       NOP
00 00    BRK 0
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
04 04    NOP $04
00 00... BRK 0    × 2
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
7 bytes 
EA       NOP
20 xx xx JSR @rts12
20 xx xx JSR @rts15
 Requires @rts12, and @rts15; and writes in stack 
EA       NOP
00 00    BRK 0
08       PHP       \ × 2
28       PLP       /
 Requires dummy interrupt handler; and writes in stack 
48       PHA
20 xx xx JSR @rts12
20 xx xx JSR @rts14
 Clobbers S; requires @rts12, and @rts14; and writes in stack
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; and writes in stack 
08       PHP
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
38       SEC
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 02    LDX #2
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 03    LDY #3
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
E6 xx    INC @zptemp
20 xx xx JSR @rts12× 2
 Clobbers Z&N; requires @zptemp, and @rts12; and writes in stack 
24 24    BIT $24
20 xx xx JSR @rts12
20 xx xx JSR @rts14
 Clobbers Z&N, and V; requires @rts12, and @rts14; and writes in stack 
85 xx    STA @zptemp
20 xx xx JSR @rts12
20 xx xx JSR @rts14
 Requires @zptemp, @rts12, and @rts14; and writes in stack 
04 04    NOP $04
20 xx xx JSR @rts12
20 xx xx JSR @rts14
 Requires @rts12, @rts14, and support for unofficial opcodes; and writes in stack 
68       PLA
98       TYA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N 
EA       NOP
48       PHA
20 xx xx JSR @rts12× 2
 Clobbers S; requires @rts12; and writes in stack
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA       NOP
08       PHP
F6 F6    INC $F6,X
28       PLP       \ × 2
08       PHP       /
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
20 xx xx JSR @rts12
08       PHP
26 26    ROL $26
66 26    ROR $26
28       PLP
 Requires @rts12; and writes in stack 
48       PHA
08       PHP
48       PHA
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA
28       PLP
 Clobbers S; and writes in stack
10 bytes 
08       PHP
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 Writes in stack 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp
11 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
12 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
15 bytes 
18   ... CLC      × 13
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 13
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 13
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 13
04 04    NOP $04
 Requires support for unofficial opcodes
16 bytes 
EA   ... NOP      × 13
4C xx xx JMP *+3
 Not relocatable code


30 cycles

5 bytes 
A9 03    LDA #3
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
68       PLA
00 00... BRK 0    × 2
 Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
6 bytes 
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
20 xx xx JSR @rts15× 2
 Requires @rts12, and @rts15; and writes in stack 
EA   ... NOP      × 2
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, S, Z&N, and C 
68       PLA
A2 04    LDX #4
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 04    LDY #4
88       DEY
10 FD    BPL *-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 04    LDY #4
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
EA       NOP
20 xx xx JSR @rts14× 2
 Requires @rts12, and @rts14; and writes in stack
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; and writes in stack 
08       PHP
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 03    LDX #3
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
85 xx    STA @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
A5 xx    LDA @zptemp
 Clobbers Z&N, and C; and requires @zptemp 
F6 F6    INC $F6,X
20 xx xx JSR @rts12× 2
 Clobbers Z&N; requires @zptemp, @rts12, and writable $00-$FF; and writes in stack 
48   ... PHA      × 2
20 xx xx JSR @rts12× 2
 Clobbers S; requires @rts12; and writes in stack
9 bytes 
08       PHP
48       PHA
18       CLC
A9 6A    LDA #$6A ;hides 'ROR A'
90 FD    BCC *-1
68       PLA
28       PLP
 Writes in stack
10 bytes 
F6 F6... INC $F6,X× 5
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
85 xx    STA @zptemp
68   ... PLA      × 6
A5 xx    LDA @zptemp
 Clobbers S, and Z&N; and requires @zptemp
11 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N
15 bytes 
EA   ... NOP      × 15
 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 05    LDY #5
88       DEY
10 FD    BPL *-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; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; and writes in stack 
E6 xx    INC @zptemp
00 00... BRK 0    × 2
 Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack 
EA       NOP
48       PHA
00 00... BRK 0    × 2
 Clobbers S; requires dummy interrupt handler; and writes in stack
7 bytes 
EA       NOP
20 xx xx JSR @rts14
20 xx xx JSR @rts15
 Requires @rts12, @rts14, and @rts15; and writes in stack 
18       CLC
90 00    BCC *+2
00 00... BRK 0    × 2
 Clobbers C; requires dummy interrupt handler; and writes in stack 
B8       CLV
50 00    BVC *+2
00 00... BRK 0    × 2
 Clobbers V; requires dummy interrupt handler; and writes in stack 
EA       NOP
85 xx    STA @zptemp
00 00... BRK 0    × 2
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
EA   ... NOP      × 2
00 00    BRK 0
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
EA       NOP
04 04    NOP $04
00 00... BRK 0    × 2
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
48       PHA
20 xx xx JSR @rts14× 2
 Clobbers S; requires @rts12, and @rts14; and writes in stack
8 bytes 
08       PHP
28       PLP
20 xx xx JSR @rts12× 2
 Requires @rts12; and writes in stack 
EA   ... NOP      × 2
00 00    BRK 0
08       PHP       \ × 2
28       PLP       /
 Requires dummy interrupt handler; and writes in stack 
68       PLA
48       PHA
68   ... PLA      × 6
 Clobbers A, S, and Z&N 
48       PHA
08       PHP
A2 03    LDX #3
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
98       TYA
24 2C    BIT <$2C ;hides 'BIT $02A0'
A0 02    LDY #2
88       DEY
10 FA    BPL *-4
A8       TAY
 Clobbers A, Z&N, and V 
08       PHP
A6 A6    LDX $A6
A2 03    LDX #3
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
8C       TXA
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
98       TYA
04 0C    NOP <$0C ;hides 'NOP $03A0'
A0 03    LDY #3
88       DEY
D0 FA    BNE *-4
A8       TAY
 Clobbers A, and Z&N; and requires support for unofficial opcodes 
48       PHA
08       PHP       \ × 4
28       PLP       /
 Clobbers S; and writes in stack
10 bytes 
08       PHP
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
28       PLP
 Writes in stack 
68       PLA
48       PHA
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers A, and Z&N 
85 xx    STA @zptemp
68       PLA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
A5 xx    LDA @zptemp
 Clobbers S, Z&N, and C; and requires @zptemp
11 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
12 bytes 
EA   ... NOP      × 2
C5 C5    CMP $C5
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA   ... NOP      × 2
24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and V 
EA   ... NOP      × 2
04 04    NOP $04
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
13 bytes 
EA   ... NOP      × 2
4C xx xx JMP *+3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
16 bytes 
18   ... CLC      × 14
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 14
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 14
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 14
04 04    NOP $04
 Requires support for unofficial opcodes
17 bytes 
EA   ... NOP      × 14
4C xx xx JMP *+3
 Not relocatable code


32 cycles

5 bytes 
A9 05    LDA #5
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
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 
F6 F6    INC $F6,X
00 00... BRK 0    × 2
 Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, S, Z&N, and C 
48   ... PHA      × 2
00 00... BRK 0    × 2
 Clobbers S; requires dummy interrupt handler; and writes in stack
7 bytes 
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP      × 3
10 FA    BPL *-4
 Clobbers A, Z&N, and C 
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
EA       NOP
20 xx xx JSR @rts15× 2
 Requires @rts12, and @rts15; and writes in stack 
AA       TAX
A9 01    LDA #1
20 xx xx JSR delay_a_25_clocks
8C       TXA
 Clobbers X, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
A8       TAY
A9 01    LDA #1
20 xx xx JSR delay_a_25_clocks
98       TYA
 Clobbers Y, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
A2 7A    LDX #122 ;hides 'NOP'
EA       NOP
E8   ... INX      × 2
10 FA    BPL *-4
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
A0 FA    LDY #250 ;hides 'NOP'
EA       NOP
C8   ... INY      × 2
D0 FA    BNE *-4
 Clobbers Y, and Z&N; and requires support for unofficial opcodes 
EA   ... NOP      × 3
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A2 04    LDX #4
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
AA       TAX
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
8C       TXA
 Clobbers X, S, Z&N, and C 
48   ... PHA      × 2
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack 
A8       TAY
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
98       TYA
 Clobbers Y, S, Z&N, and C 
68       PLA
20 xx xx JSR @rts14× 2
 Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack
8 bytes 
EA       NOP
98       TYA
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
A6 A6    LDX $A6
A2 03    LDX #3
EA       NOP
CA       DEX
10 FC    BPL *-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 
EA   ... NOP      × 2
20 xx xx JSR @rts14× 2
 Requires @rts12, and @rts14; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 02    LDX #2
24 24    BIT $24
CA       DEX
10 FB    BPL *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 03    LDY #3
24 24    BIT $24
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
28       PLP
20 xx xx JSR @rts12
08       PHP
F6 F6    INC $F6,X
28       PLP
 Requires @zptemp, @rts12, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9 00    LDA #0
20 xx xx JSR delay_256a_16_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack 
EA       NOP
48   ... PHA      × 2
20 xx xx JSR @rts12× 2
 Clobbers S; requires @rts12; and writes in stack
10 bytes 
08       PHP
48       PHA
18   ... CLC      × 2
A9 6A    LDA #$6A ;hides 'ROR A'
90 FD    BCC *-1
68       PLA
28       PLP
 Writes in stack
12 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N
16 bytes 
EA   ... NOP      × 16
 No requirements


33 cycles

5 bytes 
A9 06    LDA #6
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
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 05    LDY #5
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
08       PHP
28       PLP
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack
7 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 04    LDX #4
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
20 xx xx JSR @rts15× 2
 Clobbers S; requires @rts12, and @rts15; and writes in stack
8 bytes 
98       TYA
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, and Z&N 
08       PHP
28       PLP
20 xx xx JSR @rts12
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
24 24    BIT $24
20 xx xx JSR @rts15× 2
 Clobbers Z&N, and V; requires @rts12, and @rts15; and writes in stack 
85 xx    STA @zptemp
20 xx xx JSR @rts15× 2
 Requires @zptemp, @rts12, and @rts15; and writes in stack 
04 04    NOP $04
20 xx xx JSR @rts15× 2
 Requires @rts12, @rts15, and support for unofficial opcodes; and writes in stack
9 bytes 
EA       NOP
08       PHP
28       PLP
20 xx xx JSR @rts12× 2
 Requires @rts12; and writes in stack
10 bytes 
08       PHP       \ × 2
28       PLP       /
08       PHP
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 Writes in stack 
C5 C5    CMP $C5
85 xx    STA @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
A5 xx    LDA @zptemp
 Clobbers Z&N, and C; and requires @zptemp
11 bytes 
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
 Clobbers Z&N, and V; and requires @zptemp 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
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
 Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes 
85 xx    STA @zptemp
68       PLA
48       PHA
68   ... PLA      × 5
A5 xx    LDA @zptemp
 Clobbers S, and Z&N; and requires @zptemp
12 bytes 
EA   ... NOP      × 2
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
13 bytes 
C5 C5    CMP $C5
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
14 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
17 bytes 
18   ... CLC      × 15
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 15
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 15
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 15
04 04    NOP $04
 Requires support for unofficial opcodes
18 bytes 
EA   ... NOP      × 15
4C xx xx JMP *+3
 Not relocatable code


34 cycles

5 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
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
6 bytes 
48       PHA
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
68   ... PLA      × 2
00 00... BRK 0    × 2
 Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
48       PHA
A9 00    LDA #0
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 00    LDA #0
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
00 00... BRK 0    × 2
 Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
08       PHP
28       PLP
00 00    BRK 0
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A, and S; and writes in stack 
EA       NOP
48   ... PHA      × 2
00 00... BRK 0    × 2
 Clobbers S; requires dummy interrupt handler; and writes in stack
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; and writes in stack 
08       PHP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
20 xx xx JSR @rts15× 2
 Requires @rts12, and @rts15; and writes in stack 
F6 F6    INC $F6,X
20 xx xx JSR @rts14× 2
 Clobbers Z&N; requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack 
EA   ... NOP      × 4
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
68       PLA
98       TYA
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N 
48   ... PHA      × 2
20 xx xx JSR @rts14× 2
 Clobbers S; requires @rts12, and @rts14; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack 
EA   ... NOP      × 2
98       TYA
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
85 xx    STA @zptemp
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
A5 xx    LDA @zptemp
 Clobbers S, Z&N, and C; and requires @zptemp
10 bytes 
EA       NOP
84 xx    STY @zptemp
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
12 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N
17 bytes 
EA   ... NOP      × 17
 No requirements


35 cycles

5 bytes 
A9 08    LDA #8
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
10 FB    BPL *-3
 Clobbers A, Z&N, and C; and writes in stack 
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 
68       PLA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
 Clobbers A, S, Z&N, and C 
68       PLA
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N
7 bytes 
98       TYA
A0 05    LDY #5
88       DEY
10 FD    BPL *-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 
48       PHA
A9 01    LDA #1
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 01    LDA #1
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
EA       NOP
08       PHP
28       PLP
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack
8 bytes 
48       PHA
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 04    LDX #4
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
28       PLP
20 xx xx JSR @rts14× 2
 Requires @rts12, and @rts14; and writes in stack 
E6 xx    INC @zptemp
20 xx xx JSR @rts15× 2
 Clobbers Z&N; requires @zptemp, @rts12, and @rts15; and writes in stack 
EA       NOP
48       PHA
20 xx xx JSR @rts15× 2
 Clobbers S; requires @rts12, and @rts15; and writes in stack
9 bytes 
08       PHP
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68       PLA
28       PLP
 Writes in stack
10 bytes 
84 xx    STY @zptemp
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
13 bytes 
EA   ... NOP      × 2
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 2
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 2
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 2
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 2
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 2
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
14 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N, and V 
04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires support for unofficial opcodes
15 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and not relocatable code
18 bytes 
18   ... CLC      × 16
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 16
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 16
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 16
04 04    NOP $04
 Requires support for unofficial opcodes
19 bytes 
EA   ... NOP      × 16
4C xx xx JMP *+3
 Not relocatable code


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 06    LDX #6
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
6 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C
7 bytes 
48       PHA
A9 02    LDA #2
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 02    LDA #2
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
08       PHP
28       PLP
00 00... BRK 0    × 2
 Clobbers S; requires dummy interrupt handler; and writes in stack
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; and writes in stack 
08       PHP
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
90 FC    BCC *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 03    LDX #3
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
F6 F6    INC $F6,X
20 xx xx JSR @rts15× 2
 Clobbers Z&N; requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack 
08       PHP
28       PLP
20 xx xx JSR @rts14
20 xx xx JSR @rts15
 Requires @rts12, @rts14, and @rts15; and writes in stack 
08       PHP
C5 C5    CMP $C5
28       PLP
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
20 xx xx JSR @rts15× 2
 Clobbers S; requires @rts12, and @rts15; and writes in stack
9 bytes 
8C       TXA
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
20 xx xx JSR @rts12× 3
 Requires @rts12; and writes in stack 
98       TYA
A0 FA    LDY #250 ;hides 'NOP'
EA       NOP
C8   ... INY      × 2
D0 FA    BNE *-4
A8       TAY
 Clobbers A, and Z&N; and requires support for unofficial opcodes 
EA       NOP
68       PLA
98       TYA
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
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
 Writes in stack 
A5 A5    LDA $A5
98       TYA
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, and Z&N 
F6 F6    INC $F6,X
85 xx    STA @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
A5 xx    LDA @zptemp
 Clobbers Z&N, and C; and requires @zptemp, and writable $00-$FF 
85 xx    STA @zptemp
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
A5 xx    LDA @zptemp
 Clobbers S, Z&N, and C; and requires @zptemp
11 bytes 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
12 bytes 
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N
18 bytes 
EA   ... NOP      × 18
 No requirements


37 cycles

5 bytes 
A9 0A    LDA #10
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
 Clobbers A, S, Z&N, and C; and writes in stack 
A2 03    LDX #3
68       PLA
CA       DEX
10 FC    BPL *-2
 Clobbers A, X, S, and Z&N 
48       PHA
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
 Clobbers Y, S, and Z&N; and writes in stack 
A0 04    LDY #4
68       PLA
88       DEY
D0 FC    BNE *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
 Clobbers A, Z&N, and C 
A2 03    LDX #3
EA   ... NOP      × 2
CA       DEX
10 FB    BPL *-3
 Clobbers X, and Z&N 
A0 04    LDY #4
EA   ... NOP      × 2
88       DEY
D0 FB    BNE *-3
 Clobbers Y, and Z&N 
48       PHA
A9 03    LDA #3
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 03    LDA #3
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
00 00    BRK 0
10 FA    BPL *-4
 Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack
8 bytes 
EA       NOP
98       TYA
A0 05    LDY #5
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
F6 F6    INC $F6,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
28       PLP
20 xx xx JSR @rts15× 2
 Requires @rts12, and @rts15; and writes in stack 
EA   ... NOP      × 2
08       PHP
28       PLP
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
48   ... PHA      × 2
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A, and S; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 04    LDX #4
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 05    LDY #5
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
EA       NOP
08       PHP
28       PLP
20 xx xx JSR @rts14× 2
 Requires @rts12, and @rts14; and writes in stack
10 bytes 
08       PHP
48       PHA
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68       PLA
28       PLP
 Writes in stack
14 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and V 
EA   ... NOP      × 3
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 3
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 3
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 3
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 3
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 3
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
15 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
19 bytes 
18   ... CLC      × 17
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 17
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 17
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 17
04 04    NOP $04
 Requires support for unofficial opcodes
20 bytes 
EA   ... NOP      × 17
4C xx xx JMP *+3
 Not relocatable code


38 cycles

5 bytes 
A9 0B    LDA #11
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
EA       NOP
A2 06    LDX #6
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
 Clobbers A, S, Z&N, and C
7 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
28       PLP
 Clobbers A; and writes in stack 
98       TYA
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 05    LDY #5
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
20 xx xx JSR @rts12
00 00... BRK 0    × 2
 Requires dummy interrupt handler, and @rts12; and writes in stack
8 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Writes in stack
10 bytes 
85 xx    STA @zptemp
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
A5 xx    LDA @zptemp
 Clobbers S, Z&N, and C; and requires @zptemp
11 bytes 
85 xx    STA @zptemp
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP      × 3
10 FA    BPL *-4
A5 xx    LDA @zptemp
 Clobbers Z&N, and C; and requires @zptemp 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
84 xx    STY @zptemp
A0 FA    LDY #250 ;hides 'NOP'
EA       NOP
C8   ... INY      × 2
D0 FA    BNE *-4
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
12 bytes 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 03    LDX #3
EA       NOP
CA       DEX
10 FC    BPL *-2
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
13 bytes 
EA       NOP
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N
19 bytes 
EA   ... NOP      × 19
 No requirements


39 cycles

4 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C
6 bytes 
00 00... BRK 0    × 3
 Requires dummy interrupt handler; and writes in stack 
48       PHA
A2 06    LDX #6
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 06    LDX #6
CA       DEX
10 FD    BPL *-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 
48       PHA
A9 05    LDA #5
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 05    LDA #5
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
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; and writes in stack 
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; and writes in stack
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; and writes in stack 
08       PHP
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP      × 3
10 FA    BPL *-4
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
20 xx xx JSR @rts15
20 xx xx JSR @rts12× 2
 Requires @rts12, and @rts15; and writes in stack 
08       PHP
AA       TAX
A9 01    LDA #1
20 xx xx JSR delay_a_25_clocks
8C       TXA
28       PLP
 Clobbers X; requires delay_a_25_clocks; and writes in stack 
08       PHP
A8       TAY
A9 01    LDA #1
20 xx xx JSR delay_a_25_clocks
98       TYA
28       PLP
 Clobbers Y; requires delay_a_25_clocks; and writes in stack 
08       PHP
A2 7A    LDX #122 ;hides 'NOP'
EA       NOP
E8   ... INX      × 2
10 FA    BPL *-4
28       PLP
 Clobbers X; requires support for unofficial opcodes; and writes in stack 
08       PHP
A0 FA    LDY #250 ;hides 'NOP'
EA       NOP
C8   ... INY      × 2
D0 FA    BNE *-4
28       PLP
 Clobbers Y; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 04    LDX #4
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
A6 A6    LDX $A6
A2 03    LDX #3
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 05    LDY #5
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 2
08       PHP
28       PLP
20 xx xx JSR @rts14× 2
 Requires @rts12, and @rts14; and writes in stack 
48       PHA
20 xx xx JSR @rts12× 3
 Clobbers S; requires @rts12; and writes in stack
11 bytes 
08       PHP
48       PHA
98       TYA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
14 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
15 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code 
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   /
 Clobbers Z&N; and requires writable $200-$2FF 
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   /
 Clobbers Z&N; and requires writable $300-$3FF 
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   /
 Clobbers Z&N; and requires writable $400-$4FF 
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   /
 Clobbers Z&N; and requires writable $500-$5FF 
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   /
 Clobbers Z&N; and requires writable $600-$6FF 
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   /
 Clobbers Z&N; and requires writable $700-$7FF
20 bytes 
18   ... CLC      × 18
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 18
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 18
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 18
04 04    NOP $04
 Requires support for unofficial opcodes
21 bytes 
EA   ... NOP      × 18
4C xx xx JMP *+3
 Not relocatable code


40 cycles

5 bytes 
A9 0D    LDA #13
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
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 
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, and V
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 06    LDX #6
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 06    LDA #6
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 06    LDA #6
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
00 00... BRK 0    × 2
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack
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; and writes in stack 
08       PHP
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 05    LDY #5
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
00 00... BRK 0    × 2
08       PHP       \ × 2
28       PLP       /
 Requires dummy interrupt handler; and writes in stack
9 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Writes in stack 
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
14 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N
20 bytes 
EA   ... NOP      × 20
 No requirements


41 cycles

5 bytes 
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
28       PLP
 Clobbers Y; and writes in stack 
EA       NOP
00 00... BRK 0    × 3
 Requires dummy interrupt handler; and writes in stack
8 bytes 
48       PHA
08       PHP
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
98       TYA
A0 04    LDY #4
EA   ... NOP      × 2
88       DEY
D0 FB    BNE *-3
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A6 A6    LDX $A6
A2 05    LDX #5
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
20 xx xx JSR @rts12
20 xx xx JSR @rts14
20 xx xx JSR @rts15
 Requires @rts12, @rts14, and @rts15; and writes in stack 
08       PHP
48       PHA
A9 00    LDA #0
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Clobbers S; and writes in stack
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
 Writes in stack 
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
88   ... DEY      × 2
30 FB    BMI *-3
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
15 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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 /
 Clobbers Z&N; and requires writable $200-$2FF 
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 /
 Clobbers Z&N; and requires writable $300-$3FF 
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 /
 Clobbers Z&N; and requires writable $400-$4FF 
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 /
 Clobbers Z&N; and requires writable $500-$5FF 
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 /
 Clobbers Z&N; and requires writable $600-$6FF 
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 /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
16 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
21 bytes 
18   ... CLC      × 19
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 19
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 19
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 19
04 04    NOP $04
 Requires support for unofficial opcodes
22 bytes 
EA   ... NOP      × 19
4C xx xx JMP *+3
 Not relocatable code


42 cycles

5 bytes 
A9 0F    LDA #15
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C; and writes in stack
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 
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9 08    LDA #8
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 08    LDA #8
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A2 06    LDX #6
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack 
48       PHA
00 00... BRK 0    × 3
 Clobbers S; requires dummy interrupt handler; and writes in stack
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; and writes in stack 
08       PHP
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
98       TYA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 F8    LDX #248 ;hides 'SED'
E8   ... INX      × 2
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 3
A2 06    LDX #6
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
88   ... DEY      × 2
30 FB    BMI *-3
28       PLP
 Clobbers Y; and writes in stack 
EA   ... NOP      × 3
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
24 24    BIT $24
00 00... BRK 0    × 3
 Clobbers Z&N, and V; requires dummy interrupt handler; and writes in stack 
85 xx    STA @zptemp
00 00... BRK 0    × 3
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
EA       NOP
00 00... BRK 0    × 2
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
04 04    NOP $04
00 00... BRK 0    × 3
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 05    LDY #5
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
84 xx    STY @zptemp
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
20 xx xx JSR @rts14× 3
 Requires @rts12, and @rts14; and writes in stack 
20 xx xx JSR @rts12
20 xx xx JSR @rts15× 2
 Requires @rts12, and @rts15; and writes in stack 
08       PHP
48       PHA
A9 01    LDA #1
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
00 00... BRK 0    × 2
08       PHP       \ × 2
28       PLP       /
 Requires dummy interrupt handler; and writes in stack
10 bytes 
08       PHP
48       PHA
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Writes in stack
15 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N
21 bytes 
EA   ... NOP      × 21
 No requirements


43 cycles

5 bytes 
A9 10    LDA #16
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C
6 bytes 
38   ... SEC      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
A2 05    LDX #5
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A0 05    LDY #5
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 06    LDX #6
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
8 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA   ... NOP      × 2
00 00... BRK 0    × 3
 Requires dummy interrupt handler; and writes in stack
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
20 xx xx JSR @rts15
20 xx xx JSR @rts14× 2
 Requires @rts12, @rts14, and @rts15; and writes in stack 
08       PHP
48       PHA
A9 02    LDA #2
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
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
 Writes in stack
11 bytes 
84 xx    STY @zptemp
A0 04    LDY #4
EA   ... NOP      × 2
88       DEY
D0 FB    BNE *-3
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
15 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
16 bytes 
EA   ... NOP      × 2
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA   ... NOP      × 2
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and V 
EA   ... NOP      × 2
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
17 bytes 
EA   ... NOP      × 2
4C xx xx JMP *+3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
22 bytes 
18   ... CLC      × 20
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 20
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 20
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 20
04 04    NOP $04
 Requires support for unofficial opcodes
23 bytes 
EA   ... NOP      × 20
4C xx xx JMP *+3
 Not relocatable code


44 cycles

5 bytes 
A9 11    LDA #17
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
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 
48       PHA
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
48       PHA
A9 0A    LDA #10
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 0A    LDA #10
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
00 00    BRK 0
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
00 00    BRK 0
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
E6 xx    INC @zptemp
00 00... BRK 0    × 3
 Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
28       PLP
 Clobbers A, and S; and writes in stack 
68       PLA
98       TYA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N 
48       PHA
08       PHP
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
28       PLP
 Clobbers Y, and S; and writes in stack 
EA       NOP
48       PHA
00 00... BRK 0    × 3
 Clobbers S; requires dummy interrupt handler; and writes in stack
9 bytes 
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
98       TYA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 03    LDX #3
EA   ... NOP      × 2
CA       DEX
10 FB    BPL *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 04    LDY #4
EA   ... NOP      × 2
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers Y; and writes in stack 
20 xx xx JSR @rts14
20 xx xx JSR @rts15× 2
 Requires @rts12, @rts14, and @rts15; and writes in stack 
08       PHP
48       PHA
A9 03    LDA #3
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
00 00    BRK 0
10 FA    BPL *-4
68       PLA
 Clobbers Z&N; requires dummy interrupt handler; and writes in stack 
18       CLC
90 00    BCC *+2
00 00... BRK 0    × 3
 Clobbers C; requires dummy interrupt handler; and writes in stack 
B8       CLV
50 00    BVC *+2
00 00... BRK 0    × 3
 Clobbers V; requires dummy interrupt handler; and writes in stack 
EA       NOP
85 xx    STA @zptemp
00 00... BRK 0    × 3
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
EA   ... NOP      × 2
00 00... BRK 0    × 2
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
EA       NOP
04 04    NOP $04
00 00... BRK 0    × 3
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 05    LDY #5
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
EA       NOP
20 xx xx JSR @rts14× 3
 Requires @rts12, and @rts14; and writes in stack 
EA       NOP
20 xx xx JSR @rts12
20 xx xx JSR @rts15× 2
 Requires @rts12, and @rts15; and writes in stack 
EA   ... NOP      × 2
00 00... BRK 0    × 2
08       PHP       \ × 2
28       PLP       /
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Clobbers S; and writes in stack
11 bytes 
08       PHP
48       PHA
98       TYA
A0 04    LDY #4
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
16 bytes 
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N
22 bytes 
EA   ... NOP      × 22
 No requirements


45 cycles

5 bytes 
A9 12    LDA #18
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
EA       NOP
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C 
68       PLA
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 0B    LDA #11
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 0B    LDA #11
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 06    LDX #6
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
85 xx    STA @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
A5 xx    LDA @zptemp
 Clobbers Z&N, and C; and requires @zptemp 
F6 F6    INC $F6,X
00 00... BRK 0    × 3
 Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
48   ... PHA      × 2
00 00... BRK 0    × 3
 Clobbers S; requires dummy interrupt handler; and writes in stack
9 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68       PLA
28       PLP
 Writes in stack
11 bytes 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 06    LDX #6
CA       DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
16 bytes 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
17 bytes 
EA   ... NOP      × 3
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA   ... NOP      × 3
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and V 
EA   ... NOP      × 3
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
18 bytes 
26 26... ROL $26  × 9
 Clobbers Z&N
23 bytes 
18   ... CLC      × 21
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 21
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 21
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 21
04 04    NOP $04
 Requires support for unofficial opcodes
24 bytes 
EA   ... NOP      × 21
4C xx xx JMP *+3
 Not relocatable code


46 cycles

5 bytes 
A2 09    LDX #9
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 08    LDY #8
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
A9 13    LDA #19
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; and writes in stack 
68       PLA
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C
8 bytes 
08       PHP
28       PLP
00 00... BRK 0    × 3
 Requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
A2 06    LDX #6
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
08       PHP
A6 A6    LDX $A6
A2 06    LDX #6
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
8C       TXA
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 05    LDA #5
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
68       PLA
98       TYA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
10 bytes 
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
88   ... DEY      × 2
30 FB    BMI *-3
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 3
98       TYA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA       NOP
20 xx xx JSR @rts14
20 xx xx JSR @rts15× 2
 Requires @rts12, @rts14, and @rts15; and writes in stack 
85 xx    STA @zptemp
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
A5 xx    LDA @zptemp
 Clobbers S, Z&N, C, and V; and requires @zptemp
11 bytes 
08       PHP
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP      × 3
10 FA    BPL *-4
68       PLA
28       PLP
 Writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
16 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N
23 bytes 
EA   ... NOP      × 23
 No requirements


47 cycles

5 bytes 
A9 14    LDA #20
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68   ... PLA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C
7 bytes 
BA       TSX
68       PLA
9A       TXS
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, X, Z&N, and C; and unsafe for interrupts 
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
EA       NOP
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
F6 F6    INC $F6,X
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9 0D    LDA #13
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 0D    LDA #13
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
00 00    BRK 0
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
 Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
AA       TAX
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
8C       TXA
 Clobbers X, S, Z&N, and C 
EA       NOP
68       PLA
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
48   ... PHA      × 2
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack 
A8       TAY
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
98       TYA
 Clobbers Y, S, Z&N, and C 
EA       NOP
68       PLA
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
 Clobbers A, Y, S, and Z&N
8 bytes 
98       TYA
A0 05    LDY #5
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 3
A2 07    LDX #7
CA       DEX
10 FD    BPL *-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; and writes in stack 
EA   ... NOP      × 3
A0 07    LDY #7
88       DEY
10 FD    BPL *-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; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 06    LDX #6
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 06    LDA #6
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
08       PHP
28       PLP
00 00... BRK 0    × 2
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
EA       NOP
48   ... PHA      × 2
00 00... BRK 0    × 3
 Clobbers S; requires dummy interrupt handler; and writes in stack
10 bytes 
08       PHP
48       PHA
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68       PLA
28       PLP
 Writes in stack
17 bytes 
EA   ... NOP      × 2
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 2
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 2
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 2
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 2
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 2
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
18 bytes 
C5 C5    CMP $C5
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
19 bytes 
EA       NOP
26 26... ROL $26  × 9
 Clobbers Z&N
24 bytes 
18   ... CLC      × 22
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 22
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 22
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 22
04 04    NOP $04
 Requires support for unofficial opcodes
25 bytes 
EA   ... NOP      × 22
4C xx xx JMP *+3
 Not relocatable code


48 cycles

5 bytes 
A9 15    LDA #21
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
EA       NOP
A2 09    LDX #9
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 08    LDY #8
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
68       PLA
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
08       PHP
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
8 bytes 
98       TYA
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
88       DEY
30 FB    BMI *-3
A8       TAY
 Clobbers A, and Z&N
9 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
10 bytes 
C5 C5    CMP $C5
85 xx    STA @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
A5 xx    LDA @zptemp
 Clobbers Z&N, and C; and requires @zptemp
11 bytes 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
12 bytes 
EA   ... NOP      × 3
84 xx    STY @zptemp
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
16 bytes 
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N
24 bytes 
EA   ... NOP      × 24
 No requirements


49 cycles

4 bytes 
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, and Z&N
5 bytes 
A9 16    LDA #22
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
90 FC    BCC *-2
 Clobbers A, S, Z&N, and C; and writes in stack 
A2 05    LDX #5
48       PHA
CA       DEX
10 FC    BPL *-2
 Clobbers X, S, and Z&N; and writes in stack
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; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
24 24    BIT $24
90 FB    BCC *-3
 Clobbers A, Z&N, C, and V 
A6 A6    LDX $A6
A2 09    LDX #9
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
90 FB    BCC *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
48       PHA
A9 0F    LDA #15
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 0F    LDA #15
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
90 FB    BCC *-3
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes 
48   ... PHA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
48       PHA
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A, and S; and writes in stack 
EA       NOP
68   ... PLA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C
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; and writes in stack 
08       PHP
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; and writes in stack 
26 26    ROL $26
66 26    ROR $26
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
68       PLA
98       TYA
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9 08    LDA #8
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 06    LDX #6
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack 
85 xx    STA @zptemp
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
A5 xx    LDA @zptemp
 Clobbers S, Z&N, and C; and requires @zptemp 
48       PHA
08       PHP
28       PLP
00 00... BRK 0    × 3
 Clobbers S; requires dummy interrupt handler; and writes in stack
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
 Writes in stack 
84 xx    STY @zptemp
A0 05    LDY #5
EA       NOP
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
18 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and V 
EA   ... NOP      × 3
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 3
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 3
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 3
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 3
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 3
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
19 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
20 bytes 
EA   ... NOP      × 2
26 26... ROL $26  × 9
 Clobbers Z&N
25 bytes 
18   ... CLC      × 23
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 23
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 23
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 23
04 04    NOP $04
 Requires support for unofficial opcodes
26 bytes 
EA   ... NOP      × 23
4C xx xx JMP *+3
 Not relocatable code


50 cycles

5 bytes 
A9 17    LDA #23
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
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 06    LDX #6
EA       NOP
CA       DEX
10 FC    BPL *-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 08    LDY #8
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
48       PHA
A9 10    LDA #16
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 10    LDA #16
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
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; and writes in stack 
08       PHP
38   ... SEC      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 05    LDX #5
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 05    LDY #5
EA       NOP
88       DEY
10 FC    BPL *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
68       PLA
28       PLP
 Writes in stack
10 bytes 
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
88       DEY
30 FB    BMI *-3
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
17 bytes 
EA       NOP
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N
25 bytes 
EA   ... NOP      × 25
 No requirements


51 cycles

5 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
 Clobbers A, Z&N, C, and V 
A2 0A    LDX #10
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
20 xx xx JSR @rts12
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C; requires @rts12; and writes in stack 
48       PHA
A9 11    LDA #17
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 11    LDA #17
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68   ... PLA      × 3
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C
8 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
36 36    ROL $36,X
76 36    ROR $36,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
88       DEY
30 FB    BMI *-3
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
08       PHP
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
08       PHP
A6 A6    LDX $A6
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
8C       TXA
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 0A    LDA #10
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
20 xx xx JSR @rts12
00 00... BRK 0    × 3
 Requires dummy interrupt handler, and @rts12; and writes in stack 
EA       NOP
68       PLA
98       TYA
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
10 bytes 
EA   ... NOP      × 3
98       TYA
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
F6 F6    INC $F6,X
85 xx    STA @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
A5 xx    LDA @zptemp
 Clobbers Z&N, and C; and requires @zptemp, and writable $00-$FF 
00 00    BRK 0
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
10 FC    BPL *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack 
85 xx    STA @zptemp
EA       NOP
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
A5 xx    LDA @zptemp
 Clobbers S, Z&N, and C; and requires @zptemp
11 bytes 
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
 Writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
18 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
19 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code 
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 /
 Clobbers Z&N; and requires writable $200-$2FF 
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 /
 Clobbers Z&N; and requires writable $300-$3FF 
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 /
 Clobbers Z&N; and requires writable $400-$4FF 
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 /
 Clobbers Z&N; and requires writable $500-$5FF 
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 /
 Clobbers Z&N; and requires writable $600-$6FF 
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 /
 Clobbers Z&N; and requires writable $700-$7FF
21 bytes 
EA   ... NOP      × 3
26 26... ROL $26  × 9
 Clobbers Z&N
26 bytes 
18   ... CLC      × 24
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 24
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 24
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 24
04 04    NOP $04
 Requires support for unofficial opcodes
27 bytes 
EA   ... NOP      × 24
4C xx xx JMP *+3
 Not relocatable code


52 cycles

5 bytes 
A9 19    LDA #25
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
48       PHA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, S, and Z&N; and writes in stack
6 bytes 
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, and Z&N 
00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
7 bytes 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
EA       NOP
10 FB    BPL *-3
 Clobbers A, Z&N, C, and V 
EA       NOP
A2 06    LDX #6
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
48       PHA
A9 12    LDA #18
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 12    LDA #18
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
90 FC    BCC *-2
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
EA       NOP
98       TYA
A0 08    LDY #8
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
F6 F6    INC $F6,X
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
00 00... BRK 0    × 4
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 3
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
48   ... PHA      × 2
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A, and S; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 08    LDY #8
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 0B    LDA #11
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
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
 Writes in stack
18 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N
26 bytes 
EA   ... NOP      × 26
 No requirements


53 cycles

5 bytes 
A9 1A    LDA #26
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
68       PLA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers A, Y, S, and Z&N
6 bytes 
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
 Clobbers A, and Z&N 
EA       NOP
A2 0A    LDX #10
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
08       PHP
A2 09    LDX #9
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 08    LDY #8
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 13    LDA #19
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 13    LDA #19
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Writes in stack
10 bytes 
85 xx    STA @zptemp
68   ... PLA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
A5 xx    LDA @zptemp
 Clobbers S, Z&N, and C; and requires @zptemp
11 bytes 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
12 bytes 
EA   ... NOP      × 3
84 xx    STY @zptemp
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
19 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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 /
 Clobbers Z&N; and requires writable $200-$2FF 
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 /
 Clobbers Z&N; and requires writable $300-$3FF 
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 /
 Clobbers Z&N; and requires writable $400-$4FF 
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 /
 Clobbers Z&N; and requires writable $500-$5FF 
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 /
 Clobbers Z&N; and requires writable $600-$6FF 
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 /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
20 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
22 bytes 
EA   ... NOP      × 4
26 26... ROL $26  × 9
 Clobbers Z&N
27 bytes 
18   ... CLC      × 25
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 25
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 25
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 25
04 04    NOP $04
 Requires support for unofficial opcodes
28 bytes 
EA   ... NOP      × 25
4C xx xx JMP *+3
 Not relocatable code


54 cycles

5 bytes 
A9 1B    LDA #27
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
E6 xx    INC @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, and Z&N; and requires @zptemp 
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
10 FB    BPL *-3
 Clobbers A, S, Z&N, and C; and writes in stack 
48       PHA
A2 0A    LDX #10
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack 
A0 88    LDY #136 ;hides 'DEY'
68       PLA
88       DEY
30 FB    BMI *-3
 Clobbers A, Y, S, and Z&N
7 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
10 FA    BPL *-4
 Clobbers A, Z&N, and C 
A6 A6    LDX $A6
A2 0A    LDX #10
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 14    LDA #20
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 14    LDA #20
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
98       TYA
A0 06    LDY #6
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, and Z&N
9 bytes 
08       PHP
BA       TSX
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
9A       TXS
28       PLP
 Clobbers A, and X; writes in stack; and unsafe for interrupts 
08       PHP
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
EA       NOP
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9 0D    LDA #13
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
00 00... BRK 0    × 4
 Requires dummy interrupt handler; and writes in stack 
EA       NOP
48   ... PHA      × 3
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
EA       NOP
48   ... PHA      × 2
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 05    LDY #5
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 05    LDY #5
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 3
08       PHP
A2 07    LDX #7
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 3
08       PHP
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 08    LDY #8
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 06    LDY #6
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
18 bytes 
36 36... ROL $36,X× 9
 Clobbers Z&N
27 bytes 
EA   ... NOP      × 27
 No requirements


55 cycles

5 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
A2 F8    LDX #248 ;hides 'SED'
E8       INX
D0 FC    BNE *-2
 Clobbers X, Z&N, and D 
A0 F8    LDY #248 ;hides 'SED'
C8       INY
D0 FC    BNE *-2
 Clobbers Y, Z&N, and D
6 bytes 
F6 F6    INC $F6,X
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
A2 05    LDX #5
68       PLA
CA       DEX
10 FC    BPL *-2
 Clobbers A, X, S, and Z&N 
48   ... PHA      × 2
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, S, and Z&N; and writes in stack 
A0 05    LDY #5
68       PLA
88       DEY
10 FC    BPL *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
A2 05    LDX #5
EA   ... NOP      × 2
CA       DEX
10 FB    BPL *-3
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 15    LDA #21
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 15    LDA #21
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 09    LDX #9
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 08    LDY #8
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
9 bytes 
08       PHP
48       PHA
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Writes in stack
19 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
20 bytes 
EA   ... NOP      × 2
C5 C5    CMP $C5
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA   ... NOP      × 2
24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and V 
EA   ... NOP      × 2
04 04    NOP $04
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
21 bytes 
EA   ... NOP      × 2
4C xx xx JMP *+3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
22 bytes 
26 26    ROL $26
66 26    ROR $26
26 26... ROL $26  × 9
 Clobbers Z&N
28 bytes 
18   ... CLC      × 26
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 26
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 26
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 26
04 04    NOP $04
 Requires support for unofficial opcodes
29 bytes 
EA   ... NOP      × 26
4C xx xx JMP *+3
 Not relocatable code


56 cycles

5 bytes 
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
A9 1D    LDA #29
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28       PLP
 Clobbers Y; and writes in stack
7 bytes 
E6 xx    INC @zptemp
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
 Clobbers A, Z&N, C, and V; and requires @zptemp 
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
48       PHA
A9 16    LDA #22
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 16    LDA #22
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack
8 bytes 
A5 A5    LDA $A5
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
 Clobbers A, and Z&N 
48       PHA
08       PHP
A2 09    LDX #9
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
90 FB    BCC *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
24 24    BIT $24
90 FB    BCC *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 05    LDX #5
24 24    BIT $24
CA       DEX
10 FB    BPL *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
48       PHA
A9 0F    LDA #15
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Clobbers S; and writes in stack
10 bytes 
08       PHP
48       PHA
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Writes in stack 
84 xx    STY @zptemp
A0 06    LDY #6
EA       NOP
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
19 bytes 
EA       NOP
36 36... ROL $36,X× 9
 Clobbers Z&N
28 bytes 
EA   ... NOP      × 28
 No requirements


57 cycles

5 bytes 
A9 1E    LDA #30
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
A2 07    LDX #7
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A0 07    LDY #7
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 17    LDA #23
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 17    LDA #23
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68       PLA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
 Clobbers A, S, and Z&N
8 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA       NOP
B0 FB    BCS *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA       NOP
B0 FB    BCS *-3
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
98       TYA
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 06    LDX #6
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 06    LDY #6
EA       NOP
88       DEY
10 FC    BPL *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 08    LDY #8
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
84 xx    STY @zptemp
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 10    LDA #16
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
38   ... SEC      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Writes in stack
20 bytes 
C5 C5    CMP $C5
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
21 bytes 
4C xx xx JMP *+3
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
22 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9
 Clobbers Z&N
29 bytes 
18   ... CLC      × 27
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 27
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 27
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 27
04 04    NOP $04
 Requires support for unofficial opcodes
30 bytes 
EA   ... NOP      × 27
4C xx xx JMP *+3
 Not relocatable code


58 cycles

5 bytes 
A9 1F    LDA #31
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
EA       NOP
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack
7 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
28       PLP
 Clobbers A; and writes in stack 
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
08       PHP
A2 0A    LDX #10
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
8 bytes 
E6 xx    INC @zptemp
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
 Clobbers A, and Z&N; and requires @zptemp
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
20 xx xx JSR @rts12
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; requires @rts12; and writes in stack 
08       PHP
48       PHA
A9 11    LDA #17
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A4 xx    LDY @zptemp
 Clobbers S, and Z&N; requires @zptemp; and writes in stack
10 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
10 FB    BPL *-3
68       PLA
28       PLP
 Writes in stack 
84 xx    STY @zptemp
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
20 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N
29 bytes 
EA   ... NOP      × 29
 No requirements


59 cycles

5 bytes 
A9 20    LDA #32
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
 Clobbers A, Z&N, and C; and writes in stack 
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C 
48       PHA
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
68       PLA
A2 F8    LDX #248 ;hides 'SED'
E8       INX
D0 FC    BNE *-2
 Clobbers A, X, S, Z&N, and D 
48       PHA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack 
68       PLA
A0 F8    LDY #248 ;hides 'SED'
C8       INY
D0 FC    BNE *-2
 Clobbers A, Y, S, Z&N, and D
7 bytes 
38   ... SEC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
38       SEC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
98       TYA
A0 F8    LDY #248 ;hides 'SED'
C8       INY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, Z&N, and D 
A6 A6    LDX $A6
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 19    LDA #25
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 19    LDA #25
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
08       PHP
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28       PLP
 Clobbers Y, and S; and writes in stack
8 bytes 
08       PHP
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28       PLP
 Clobbers Y; and writes in stack 
F6 F6    INC $F6,X
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF 
00 00    BRK 0
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
00 00    BRK 0
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
68       PLA
98       TYA
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
EA       NOP
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
EA       NOP
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
98       TYA
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA       NOP
08       PHP
A2 06    LDX #6
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
48       PHA
A9 12    LDA #18
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 08    LDY #8
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
28       PLP
00 00... BRK 0    × 4
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Clobbers S; and writes in stack
11 bytes 
08       PHP
48       PHA
98       TYA
A0 07    LDY #7
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
21 bytes 
EA       NOP
C5 C5    CMP $C5
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
EA   ... NOP      × 2
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 2
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 2
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 2
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 2
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 2
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
22 bytes 
EA       NOP
4C xx xx JMP *+3
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
23 bytes 
EA       NOP
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9
 Clobbers Z&N
30 bytes 
18   ... CLC      × 28
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 28
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 28
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 28
04 04    NOP $04
 Requires support for unofficial opcodes
31 bytes 
EA   ... NOP      × 28
4C xx xx JMP *+3
 Not relocatable code


60 cycles

5 bytes 
A9 21    LDA #33
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68       PLA
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 1A    LDA #26
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 1A    LDA #26
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 0A    LDX #10
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 13    LDA #19
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
28       PLP
68       PLA
28       PLP
 Writes in stack 
E6 xx    INC @zptemp
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
20 bytes 
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N
30 bytes 
EA   ... NOP      × 30
 No requirements


61 cycles

5 bytes 
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 22    LDA #34
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
 Clobbers A, Z&N, and C; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
E6 xx    INC @zptemp
90 FB    BCC *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
48       PHA
A9 1B    LDA #27
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 1B    LDA #27
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
EA       NOP
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C
8 bytes 
98       TYA
A0 07    LDY #7
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, and Z&N 
08       PHP
E6 xx    INC @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28       PLP
 Clobbers Y; requires @zptemp; and writes in stack 
48   ... PHA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48       PHA
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
28       PLP
 Clobbers A, and S; and writes in stack 
48       PHA
08       PHP
A2 0A    LDX #10
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
10 FA    BPL *-4
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A6 A6    LDX $A6
A2 0A    LDX #10
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
85 xx    STA @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
A5 xx    LDA @zptemp
 Clobbers Z&N, and C; and requires @zptemp 
84 xx    STY @zptemp
A0 F8    LDY #248 ;hides 'SED'
C8       INY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
 Clobbers Z&N, and D; and requires @zptemp 
08       PHP
48       PHA
A9 14    LDA #20
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 06    LDY #6
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
11 bytes 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
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
 Requires @zptemp, and writable $00-$FF; and writes in stack 
EA       NOP
08       PHP
28       PLP
00 00... BRK 0    × 4
 Requires dummy interrupt handler; and writes in stack 
EA       NOP
48   ... PHA      × 2
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Clobbers S; and writes in stack
12 bytes 
08       PHP
48       PHA
98       TYA
A0 05    LDY #5
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
28       PLP
 Writes in stack
21 bytes 
FE 00 02 INC $0200,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
22 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
23 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
24 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9
 Clobbers Z&N
31 bytes 
18   ... CLC      × 29
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 29
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 29
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 29
04 04    NOP $04
 Requires support for unofficial opcodes
32 bytes 
EA   ... NOP      × 29
4C xx xx JMP *+3
 Not relocatable code


62 cycles

5 bytes 
A2 88    LDX #136 ;hides 'DEY'
CA       DEX
30 FC    BMI *-2
 Clobbers X, Y, and Z&N 
A9 23    LDA #35
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
00 00    BRK 0
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack
7 bytes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
68       PLA
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
08       PHP
A2 F8    LDX #248 ;hides 'SED'
E8       INX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
C9 CD    CMP #<$CD ;hides 'CMP $06A2'
A2 06    LDX #6
CA       DEX
10 FA    BPL *-4
 Clobbers X, Z&N, and C 
A2 2C    LDX #<$2C ;hides 'BIT $06A2'
A2 06    LDX #6
CA       DEX
10 FA    BPL *-4
 Clobbers X, Z&N, and V 
A9 AD    LDA #<$AD ;hides 'LDA $79A2'
A2 79    LDX #121
E8       INX
10 FA    BPL *-4
 Clobbers A, X, and Z&N 
08       PHP
A0 F8    LDY #248 ;hides 'SED'
C8       INY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
C9 CD    CMP #<$CD ;hides 'CMP $07A0'
A0 07    LDY #7
88       DEY
D0 FA    BNE *-4
 Clobbers Y, Z&N, and C 
A0 2C    LDY #<$2C ;hides 'BIT $86A0'
A0 86    LDY #134
88       DEY
30 FA    BMI *-4
 Clobbers Y, Z&N, and V 
A9 AD    LDA #<$AD ;hides 'LDA $86A0'
A0 86    LDY #134
88       DEY
30 FA    BMI *-4
 Clobbers A, Y, and Z&N 
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
A2 8D    LDX #<$8D ;hides 'STA $06A2'
A2 06    LDX #6
CA       DEX
10 FA    BPL *-4
 Clobbers X, and Z&N; and requires writable $600-$6FF 
A2 8D    LDX #<$8D ;hides 'STA $07A2'
A2 07    LDX #7
CA       DEX
D0 FA    BNE *-4
 Clobbers X, and Z&N; and requires writable $700-$7FF 
A0 8D    LDY #<$8D ;hides 'STA $06A0'
A0 06    LDY #6
88       DEY
10 FA    BPL *-4
 Clobbers Y, and Z&N; and requires writable $600-$6FF 
A0 8D    LDY #<$8D ;hides 'STA $07A0'
A0 07    LDY #7
88       DEY
D0 FA    BNE *-4
 Clobbers Y, and Z&N; and requires writable $700-$7FF 
F6 F6    INC $F6,X
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
80 0C    NOP #<$0C ;hides 'NOP $07A2'
A2 07    LDX #7
CA       DEX
D0 FA    BNE *-4
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
80 0C    NOP #<$0C ;hides 'NOP $07A0'
A0 07    LDY #7
88       DEY
D0 FA    BNE *-4
 Clobbers Y, and Z&N; and requires support for unofficial opcodes
8 bytes 
EA       NOP
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 3
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
9 bytes 
48       PHA
98       TYA
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
84 xx    STY @zptemp
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 15    LDA #21
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A4 xx    LDY @zptemp
28       PLP
 Requires @zptemp; and writes in stack
11 bytes 
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
 Writes in stack
21 bytes 
EA       NOP
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N
31 bytes 
EA   ... NOP      × 31
 No requirements


63 cycles

5 bytes 
A9 24    LDA #36
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
A9 4A    LDA #$4A ;hides 'LSR A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack
6 bytes 
EA       NOP
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes
7 bytes 
38       SEC
A9 0B    LDA #11
E9 01    SBC #1
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
A9 4A    LDA #$4A ;hides 'LSR A'
4C xx xx JMP *+3
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and not relocatable code 
08       PHP
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 1D    LDA #29
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 1D    LDA #29
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68   ... PLA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C
8 bytes 
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
 Clobbers A, Z&N, and C; and writes in stack 
48       PHA
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack 
68       PLA
98       TYA
A0 F8    LDY #248 ;hides 'SED'
C8       INY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, S, Z&N, and D
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
E6 xx    INC @zptemp
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
 Clobbers Z&N, C, and V; requires @zptemp; and writes in stack 
08       PHP
E6 xx    INC @zptemp
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
28       PLP
 Clobbers A; requires @rts12, and @rts14; and writes in stack 
08       PHP
48       PHA
A9 16    LDA #22
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack 
48       PHA
08       PHP
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
28       PLP
 Clobbers A, and S; and writes in stack
10 bytes 
48       PHA
A5 A5    LDA $A5
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
84 xx    STY @zptemp
A0 07    LDY #7
EA       NOP
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
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
 Writes in stack
22 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N, and V 
EA       NOP
FE 00 02 INC $0200,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
23 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
25 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9
 Clobbers Z&N
32 bytes 
18   ... CLC      × 30
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 30
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 30
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 30
04 04    NOP $04
 Requires support for unofficial opcodes
33 bytes 
EA   ... NOP      × 30
4C xx xx JMP *+3
 Not relocatable code


64 cycles

5 bytes 
A9 25    LDA #37
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 09    LDX #9
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 08    LDY #8
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N
7 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA   ... NOP      × 2
B0 FA    BCS *-4
 Clobbers A, Z&N, C, and V 
48       PHA
A9 1E    LDA #30
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 1E    LDA #30
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
38       SEC
10 FA    BPL *-4
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
10 F9    BPL *-5
 Clobbers A, Z&N, and C 
08       PHP
A2 07    LDX #7
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 07    LDY #7
EA       NOP
88       DEY
10 FC    BPL *-2
28       PLP
 Clobbers Y; and writes in stack 
68       PLA
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 17    LDA #23
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA       NOP
B0 FB    BCS *-3
68       PLA
28       PLP
 Writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
22 bytes 
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N
32 bytes 
EA   ... NOP      × 32
 No requirements


65 cycles

5 bytes 
A9 26    LDA #38
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack 
A2 07    LDX #7
48       PHA
CA       DEX
10 FC    BPL *-2
 Clobbers X, S, and Z&N; and writes in stack 
68       PLA
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
A0 07    LDY #7
48       PHA
88       DEY
10 FC    BPL *-2
 Clobbers Y, S, and Z&N; and writes in stack 
68       PLA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 1F    LDA #31
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 1F    LDA #31
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
48       PHA
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
28       PLP
 Writes in stack
10 bytes 
85 xx    STA @zptemp
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
A5 xx    LDA @zptemp
 Clobbers S, Z&N, and C; and requires @zptemp
11 bytes 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
23 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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 /
 Clobbers Z&N; and requires writable $200-$2FF 
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 /
 Clobbers Z&N; and requires writable $300-$3FF 
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 /
 Clobbers Z&N; and requires writable $400-$4FF 
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 /
 Clobbers Z&N; and requires writable $500-$5FF 
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 /
 Clobbers Z&N; and requires writable $600-$6FF 
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 /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
24 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
26 bytes 
26 26    ROL $26   \ × 2
66 26    ROR $26   /
26 26... ROL $26  × 9
 Clobbers Z&N
33 bytes 
18   ... CLC      × 31
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 31
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 31
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 31
04 04    NOP $04
 Requires support for unofficial opcodes
34 bytes 
EA   ... NOP      × 31
4C xx xx JMP *+3
 Not relocatable code


66 cycles

5 bytes 
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
A9 27    LDA #39
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack
7 bytes 
48       PHA
A9 20    LDA #32
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 20    LDA #32
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
38       SEC
A9 09    LDA #9
EA       NOP
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
04 04    NOP $04
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes 
68   ... PLA      × 2
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C 
48       PHA
08       PHP
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 F8    LDY #248 ;hides 'SED'
C8       INY
D0 FC    BNE *-2
A8       TAY
68       PLA
 Clobbers Z&N, and D; and writes in stack 
98       TYA
C9 CD    CMP #<$CD ;hides 'CMP $07A0'
A0 07    LDY #7
88       DEY
D0 FA    BNE *-4
A8       TAY
 Clobbers A, Z&N, and C 
8C       TXA
A2 2C    LDX #<$2C ;hides 'BIT $06A2'
A2 06    LDX #6
CA       DEX
10 FA    BPL *-4
AA       TAX
 Clobbers A, Z&N, and V 
68       PLA
48       PHA
98       TYA
A0 F8    LDY #248 ;hides 'SED'
C8       INY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, Z&N, and D 
08       PHP
A6 A6    LDX $A6
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
8C       TXA
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
98       TYA
A0 8D    LDY #<$8D ;hides 'STA $06A0'
A0 06    LDY #6
88       DEY
10 FA    BPL *-4
A8       TAY
 Clobbers A, and Z&N; and requires writable $600-$6FF 
98       TYA
A0 8D    LDY #<$8D ;hides 'STA $07A0'
A0 07    LDY #7
88       DEY
D0 FA    BNE *-4
A8       TAY
 Clobbers A, and Z&N; and requires writable $700-$7FF 
08       PHP
48       PHA
A9 19    LDA #25
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
98       TYA
80 0C    NOP #<$0C ;hides 'NOP $07A0'
A0 07    LDY #7
88       DEY
D0 FA    BNE *-4
A8       TAY
 Clobbers A, and Z&N; and requires support for unofficial opcodes 
EA       NOP
68       PLA
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
10 bytes 
EA   ... NOP      × 3
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
F6 F6    INC $F6,X
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
68       PLA
 Clobbers Z&N; requires @zptemp, and writable $00-$FF; and writes in stack 
00 00    BRK 0
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 3
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
11 bytes 
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
 Writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
22 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N
33 bytes 
EA   ... NOP      × 33
 No requirements


67 cycles

5 bytes 
A9 28    LDA #40
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack
7 bytes 
BA       TSX
A9 4A    LDA #$4A ;hides 'LSR A'
48       PHA
D0 FC    BNE *-2
9A       TXS
 Clobbers A, X, Z&N, and C; and writes in stack 
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
F6 F6    INC $F6,X
90 FB    BCC *-3
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
A0 05    LDY #5
F6 F6    INC $F6,X
88       DEY
10 FB    BPL *-3
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9 21    LDA #33
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 21    LDA #33
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A2 05    LDX #5
48   ... PHA      × 2
CA       DEX
10 FB    BPL *-3
 Clobbers X, S, and Z&N; and writes in stack 
A2 05    LDX #5
EA       NOP
68       PLA
CA       DEX
10 FB    BPL *-3
 Clobbers A, X, S, and Z&N 
A0 05    LDY #5
48   ... PHA      × 2
88       DEY
10 FB    BPL *-3
 Clobbers Y, S, and Z&N; and writes in stack 
A0 05    LDY #5
EA       NOP
68       PLA
88       DEY
10 FB    BPL *-3
 Clobbers A, Y, S, and Z&N 
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and requires @zptemp 
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and requires support for unofficial opcodes
8 bytes 
EA       NOP
98       TYA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
A6 A6    LDX $A6
A2 09    LDX #9
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 08    LDY #8
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N
9 bytes 
48       PHA
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 0A    LDX #10
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 1A    LDA #26
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
23 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
24 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
25 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
26 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9
 Clobbers Z&N
34 bytes 
18   ... CLC      × 32
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 32
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 32
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 32
04 04    NOP $04
 Requires support for unofficial opcodes
35 bytes 
EA   ... NOP      × 32
4C xx xx JMP *+3
 Not relocatable code


68 cycles

5 bytes 
A9 29    LDA #41
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
EA       NOP
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 0C    LDA #12
E9 01    SBC #1
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 22    LDA #34
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 22    LDA #34
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
EA       NOP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
98       TYA
A0 08    LDY #8
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, and Z&N
9 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 1B    LDA #27
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 07    LDY #7
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack
11 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
10 FA    BPL *-4
68       PLA
28       PLP
 Writes in stack 
84 xx    STY @zptemp
C9 CD    CMP #<$CD ;hides 'CMP $07A0'
A0 07    LDY #7
88       DEY
D0 FA    BNE *-4
A4 xx    LDY @zptemp
 Clobbers Z&N, and C; and requires @zptemp 
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
 Clobbers Z&N, and V; and requires @zptemp 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
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
 Clobbers Z&N; and requires @zptemp, and writable $600-$6FF 
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
 Clobbers Z&N; and requires @zptemp, and writable $700-$7FF 
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
 Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
12 bytes 
E6 xx    INC @zptemp
84 xx    STY @zptemp
A0 07    LDY #7
EA       NOP
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
23 bytes 
EA       NOP
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N
34 bytes 
EA   ... NOP      × 34
 No requirements


69 cycles

5 bytes 
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, Z&N, and C 
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
 Clobbers Y, and Z&N 
A9 2A    LDA #42
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack
7 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
38       SEC
10 FA    BPL *-4
 Clobbers A, Z&N, and C; and writes in stack 
A6 A6    LDX $A6
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
08       PHP
A2 88    LDX #136 ;hides 'DEY'
CA       DEX
30 FC    BMI *-2
28       PLP
 Clobbers X, and Y; and writes in stack 
48       PHA
A9 23    LDA #35
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 23    LDA #35
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
00 00    BRK 0
08       PHP
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28       PLP
 Clobbers Y; requires dummy interrupt handler; and writes in stack 
68       PLA
98       TYA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
68       PLA
28       PLP
 Writes in stack 
EA   ... NOP      × 2
98       TYA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N
10 bytes 
EA       NOP
84 xx    STY @zptemp
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
24 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
25 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
26 bytes 
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
35 bytes 
18   ... CLC      × 33
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 33
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 33
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 33
04 04    NOP $04
 Requires support for unofficial opcodes
36 bytes 
EA   ... NOP      × 33
4C xx xx JMP *+3
 Not relocatable code


70 cycles

5 bytes 
A9 2B    LDA #43
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68       PLA
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 24    LDA #36
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 24    LDA #36
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires support for unofficial opcodes; and writes in stack 
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 0B    LDA #11
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
4C xx xx JMP *+3
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; writes in stack; and not relocatable code 
08       PHP
38       SEC
A9 0B    LDA #11
E9 01    SBC #1
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 1D    LDA #29
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
84 xx    STY @zptemp
A0 08    LDY #8
EA       NOP
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
48   ... PHA      × 2
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
11 bytes 
48       PHA
A5 A5    LDA $A5
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
48       PHA
E6 xx    INC @zptemp
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
28       PLP
 Requires @zptemp; and writes in stack 
08       PHP
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68       PLA
28       PLP
 Requires @rts12, and @rts14; and writes in stack 
48       PHA
08       PHP
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
A8       TAY
68       PLA
28       PLP
 Clobbers S; and writes in stack
12 bytes 
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
 Writes in stack
24 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N
35 bytes 
EA   ... NOP      × 35
 No requirements


71 cycles

5 bytes 
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 2C    LDA #44
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
 Clobbers A, Z&N, and C
7 bytes 
48       PHA
A9 25    LDA #37
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 25    LDA #37
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A2 09    LDX #9
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 08    LDY #8
EA       NOP
88       DEY
10 FC    BPL *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA   ... NOP      × 2
B0 FA    BCS *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA   ... NOP      × 2
B0 FA    BCS *-4
28       PLP
 Clobbers A; and writes in stack 
8C       TXA
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 1E    LDA #30
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
68       PLA
98       TYA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
10 bytes 
08       PHP
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
D0 FC    BNE *-2
68       PLA
28       PLP
 Writes in stack 
A5 A5    LDA $A5
98       TYA
A0 08    LDY #8
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, and Z&N
11 bytes 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
25 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
26 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
27 bytes 
EA       NOP
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
36 bytes 
18   ... CLC      × 34
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 34
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 34
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 34
04 04    NOP $04
 Requires support for unofficial opcodes
37 bytes 
EA   ... NOP      × 34
4C xx xx JMP *+3
 Not relocatable code


72 cycles

5 bytes 
A9 2D    LDA #45
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, S, Z&N, and C; and writes in stack 
48       PHA
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
C5 CD    CMP <$CD ;hides 'CMP $78A2'
A2 78    LDX #120
E8       INX
10 FA    BPL *-4
 Clobbers X, Z&N, and C 
24 2C    BIT <$2C ;hides 'BIT $87A2'
A2 87    LDX #135
CA       DEX
30 FA    BMI *-4
 Clobbers X, Z&N, and V 
A5 AD    LDA <$AD ;hides 'LDA $08A2'
A2 08    LDX #8
CA       DEX
D0 FA    BNE *-4
 Clobbers A, X, and Z&N 
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
 Clobbers Y, and Z&N 
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
48       PHA
A9 26    LDA #38
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 26    LDA #38
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
04 0C    NOP <$0C ;hides 'NOP $08A2'
A2 08    LDX #8
CA       DEX
D0 FA    BNE *-4
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
48   ... PHA      × 2
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack
8 bytes 
EA       NOP
98       TYA
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 3
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
48       PHA
08       PHP
A2 88    LDX #136 ;hides 'DEY'
CA       DEX
30 FC    BMI *-2
28       PLP
 Clobbers X, Y, and S; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 07    LDX #7
24 24    BIT $24
CA       DEX
10 FB    BPL *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 07    LDY #7
24 24    BIT $24
88       DEY
10 FB    BPL *-3
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 1F    LDA #31
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
B0 FC    BCS *-2
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack
11 bytes 
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
 Writes in stack
24 bytes 
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N
36 bytes 
EA   ... NOP      × 36
 No requirements


73 cycles

5 bytes 
A9 2E    LDA #46
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
EA       NOP
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
7 bytes 
98       TYA
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 27    LDA #39
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 27    LDA #39
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 20    LDA #32
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; requires @zptemp; and writes in stack 
48       PHA
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; requires @zptemp; and writes in stack 
48   ... PHA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; requires support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
10 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
28       PLP
 Writes in stack
11 bytes 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
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
 Clobbers S, Z&N, and C; and requires @zptemp, and support for unofficial opcodes
12 bytes 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 09    LDX #9
EA       NOP
CA       DEX
D0 FC    BNE *-2
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
25 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
26 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
27 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
28 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
37 bytes 
18   ... CLC      × 35
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 35
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 35
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 35
04 04    NOP $04
 Requires support for unofficial opcodes
38 bytes 
EA   ... NOP      × 35
4C xx xx JMP *+3
 Not relocatable code


74 cycles

5 bytes 
A9 2F    LDA #47
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 28    LDA #40
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 28    LDA #40
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
 Clobbers A, Z&N, and C 
68       PLA
98       TYA
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
BA       TSX
A9 4A    LDA #$4A ;hides 'LSR A'
48       PHA
D0 FC    BNE *-2
9A       TXS
28       PLP
 Clobbers A, and X; and writes in stack 
08       PHP
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
F6 F6    INC $F6,X
90 FB    BCC *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
F6 F6    INC $F6,X
90 FB    BCC *-3
28       PLP
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
A0 05    LDY #5
F6 F6    INC $F6,X
88       DEY
10 FB    BPL *-3
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9 21    LDA #33
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
08       PHP
A2 09    LDX #9
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 08    LDY #8
EA       NOP
88       DEY
10 FC    BPL *-2
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
08       PHP
98       TYA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 07    LDX #7
24 24    BIT $24
CA       DEX
10 FB    BPL *-3
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 07    LDY #7
24 24    BIT $24
88       DEY
10 FB    BPL *-3
28       PLP
 Clobbers Y; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 0A    LDY #10
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
25 bytes 
EA       NOP
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N
37 bytes 
EA   ... NOP      × 37
 No requirements


75 cycles

5 bytes 
A9 30    LDA #48
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68       PLA
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 29    LDA #41
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 29    LDA #41
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 0C    LDA #12
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 0C    LDA #12
E9 01    SBC #1
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 22    LDA #34
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
18       CLC
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 08    LDY #8
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack
11 bytes 
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
 Writes in stack
26 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N, and V 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
27 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
29 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
38 bytes 
18   ... CLC      × 36
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 36
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 36
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 36
04 04    NOP $04
 Requires support for unofficial opcodes
39 bytes 
EA   ... NOP      × 36
4C xx xx JMP *+3
 Not relocatable code


76 cycles

5 bytes 
A2 0E    LDX #14
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 31    LDA #49
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
30 FC    BMI *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
7 bytes 
08       PHP
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers A, and X; and writes in stack 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 2A    LDA #42
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 2A    LDA #42
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
8 bytes 
E6 xx    INC @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
04 04    NOP $04
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack 
48       PHA
08       PHP
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
38       SEC
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
38       SEC
10 FA    BPL *-4
28       PLP
 Clobbers A; and writes in stack 
A5 A5    LDA $A5
98       TYA
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A6 A6    LDX $A6
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
48       PHA
A9 23    LDA #35
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
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
 Writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
26 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N
38 bytes 
EA   ... NOP      × 38
 No requirements


77 cycles

5 bytes 
A9 32    LDA #50
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9 2B    LDA #43
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 2B    LDA #43
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
03 xx    SLO (@ptrtemp,X)
 Clobbers A, X, Z&N, and C; and requires @ptrtemp, and support for unofficial opcodes 
A0 0A    LDY #10 ;hides 'ASL A'
88       DEY
D0 FC    BNE *-2
13 xx    SLO (@ptrtemp),Y
 Clobbers A, Y, Z&N, and C; and requires @ptrtemp, and support for unofficial opcodes 
48   ... PHA      × 2
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
EA       NOP
68       PLA
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
48   ... PHA      × 2
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
EA       NOP
68       PLA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N 
68       PLA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V; and requires support for unofficial opcodes
8 bytes 
EA       NOP
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 3
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
9 bytes 
48       PHA
98       TYA
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 0C    LDX #12
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 24    LDA #36
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires @zptemp; and writes in stack 
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 0B    LDA #11
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
27 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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 /
 Clobbers Z&N; and requires writable $200-$2FF 
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 /
 Clobbers Z&N; and requires writable $300-$3FF 
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 /
 Clobbers Z&N; and requires writable $400-$4FF 
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 /
 Clobbers Z&N; and requires writable $500-$5FF 
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 /
 Clobbers Z&N; and requires writable $600-$6FF 
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 /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
28 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
30 bytes 
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9
 Clobbers Z&N
39 bytes 
18   ... CLC      × 37
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 37
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 37
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 37
04 04    NOP $04
 Requires support for unofficial opcodes
40 bytes 
EA   ... NOP      × 37
4C xx xx JMP *+3
 Not relocatable code


78 cycles

5 bytes 
A9 33    LDA #51
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 0A    LDX #10
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A0 0A    LDY #10
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N 
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
30 FC    BMI *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
7 bytes 
38       SEC
A9 0E    LDA #14
E9 01    SBC #1
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 2C    LDA #44
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 2C    LDA #44
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
68       PLA
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
 Clobbers A, Z&N, and C
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 25    LDA #37
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
A4 xx    LDY @zptemp
 Clobbers S, and Z&N; requires @zptemp; and writes in stack
11 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA   ... NOP      × 2
B0 FA    BCS *-4
68       PLA
28       PLP
 Writes in stack 
84 xx    STY @zptemp
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
26 bytes 
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
39 bytes 
EA   ... NOP      × 39
 No requirements


79 cycles

5 bytes 
A9 34    LDA #52
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
A0 88    LDY #136 ;hides 'DEY'
48       PHA
30 FC    BMI *-2
 Clobbers Y, S, and Z&N; and writes in stack
6 bytes 
A0 88    LDY #136 ;hides 'DEY'
85 xx    STA @zptemp
30 FB    BMI *-3
 Clobbers Y, and Z&N; and requires @zptemp 
A0 88    LDY #136 ;hides 'DEY'
04 04    NOP $04
30 FB    BMI *-3
 Clobbers Y, and Z&N; and requires support for unofficial opcodes 
A9 4A    LDA #$4A ;hides 'LSR A'
48       PHA
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack 
48       PHA
A2 0E    LDX #14
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack
7 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
 Clobbers A, Z&N, C, and V 
A6 A6    LDX $A6
A2 0E    LDX #14
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires @zptemp 
48       PHA
A9 2D    LDA #45
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 2D    LDA #45
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
08       PHP
28       PLP
10 F9    BPL *-5
 Clobbers A, Z&N, and C; and writes in stack 
A9 4A    LDA #$4A ;hides 'LSR A'
4C xx xx JMP *+3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and not relocatable code 
68       PLA
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N 
48       PHA
08       PHP
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers A, X, and S; and writes in stack 
48       PHA
08       PHP
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
24 2C    BIT <$2C ;hides 'BIT $87A2'
A2 87    LDX #135
CA       DEX
30 FA    BMI *-4
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9 26    LDA #38
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
08       PHP
98       TYA
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
27 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
28 bytes 
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
 Clobbers Z&N, and C 
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
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires support for unofficial opcodes
29 bytes 
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
 Clobbers Z&N; and not relocatable code
30 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
40 bytes 
18   ... CLC      × 38
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 38
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 38
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 38
04 04    NOP $04
 Requires support for unofficial opcodes
41 bytes 
EA   ... NOP      × 38
4C xx xx JMP *+3
 Not relocatable code


80 cycles

5 bytes 
A9 35    LDA #53
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 88    LDX #136 ;hides 'DEY'
EA       NOP
CA       DEX
30 FB    BMI *-3
 Clobbers X, Y, and Z&N 
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
30 FC    BMI *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack 
68       PLA
A2 0E    LDX #14
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 0E    LDX #14
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 2E    LDA #46
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 2E    LDA #46
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 27    LDA #39
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp 
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
 Clobbers S; requires @zptemp; and writes in stack 
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
 Clobbers S; requires support for unofficial opcodes; and writes in stack
12 bytes 
08       PHP
48       PHA
38       SEC
A9 09    LDA #9
EA       NOP
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
27 bytes 
EA       NOP
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
40 bytes 
EA   ... NOP      × 40
 No requirements


81 cycles

5 bytes 
A2 0F    LDX #15
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
A9 36    LDA #54
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
48       PHA
30 FB    BMI *-3
 Clobbers A, S, Z&N, C, and V; and writes in stack
7 bytes 
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4
 Clobbers A, Z&N, C, and V; and requires @zptemp 
48       PHA
A9 2F    LDA #47
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 2F    LDA #47
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
48       PHA
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
 Clobbers A, Z&N, C, and V 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires @zptemp 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts15
90 FA    BCC *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
00 00    BRK 0
90 FA    BCC *-4
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
08       PHP
28       PLP
10 F9    BPL *-5
 Clobbers A, Z&N, and C; and writes in stack 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
4C xx xx JMP *+3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and not relocatable code 
08       PHP
A6 A6    LDX $A6
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
8C       TXA
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 28    LDA #40
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
48       PHA
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; and writes in stack 
EA       NOP
68       PLA
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
10 bytes 
C5 C5    CMP $C5
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 3
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N
11 bytes 
EA   ... NOP      × 2
48       PHA
98       TYA
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
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
 Requires @zptemp, and writable $00-$FF; and writes in stack
12 bytes 
EA       NOP
08       PHP
48       PHA
98       TYA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
28 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
29 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
30 bytes 
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
41 bytes 
18   ... CLC      × 39
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 39
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 39
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 39
04 04    NOP $04
 Requires support for unofficial opcodes
42 bytes 
EA   ... NOP      × 39
4C xx xx JMP *+3
 Not relocatable code


82 cycles

5 bytes 
A9 37    LDA #55
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 09    LDX #9
68       PLA
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, S, and Z&N 
48       PHA
A0 88    LDY #136 ;hides 'DEY'
48       PHA
30 FC    BMI *-2
 Clobbers Y, S, and Z&N; and writes in stack 
A0 08    LDY #8
68       PLA
88       DEY
10 FC    BPL *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
A2 09    LDX #9
EA   ... NOP      × 2
CA       DEX
D0 FB    BNE *-3
 Clobbers X, and Z&N 
A0 08    LDY #8
EA   ... NOP      × 2
88       DEY
10 FB    BPL *-3
 Clobbers Y, and Z&N 
48       PHA
A9 30    LDA #48
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 30    LDA #48
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
48       PHA
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
98       TYA
A0 0A    LDY #10
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, and Z&N
9 bytes 
48       PHA
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 29    LDA #41
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 0C    LDA #12
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
28 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N
41 bytes 
EA   ... NOP      × 41
 No requirements


83 cycles

5 bytes 
A9 38    LDA #56
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, V, and D 
EA       NOP
A2 0F    LDX #15
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 0F    LDA #15
E9 01    SBC #1
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 0E    LDX #14
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 31    LDA #49
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 31    LDA #49
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
98       TYA
A0 88    LDY #136 ;hides 'DEY'
48       PHA
30 FC    BMI *-2
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack
8 bytes 
98       TYA
A0 88    LDY #136 ;hides 'DEY'
85 xx    STA @zptemp
30 FB    BMI *-3
A8       TAY
 Clobbers A, and Z&N; and requires @zptemp 
98       TYA
A0 88    LDY #136 ;hides 'DEY'
04 04    NOP $04
30 FB    BMI *-3
A8       TAY
 Clobbers A, and Z&N; and requires support for unofficial opcodes
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 2A    LDA #42
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
10 bytes 
E6 xx    INC @zptemp
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
08       PHP
E6 xx    INC @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
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
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
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
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
00 00    BRK 0
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
98       TYA
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack 
48       PHA
08       PHP
98       TYA
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
A8       TAY
28       PLP
 Clobbers A, and S; and writes in stack
11 bytes 
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
 Writes in stack 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
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
 Clobbers S, Z&N, C, and V; and requires @zptemp, and support for unofficial opcodes
12 bytes 
EA   ... NOP      × 3
84 xx    STY @zptemp
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
29 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires writable $200-$2FF 
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
 Clobbers Z&N; and requires writable $300-$3FF 
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
 Clobbers Z&N; and requires writable $400-$4FF 
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
 Clobbers Z&N; and requires writable $500-$5FF 
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
 Clobbers Z&N; and requires writable $600-$6FF 
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
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
30 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
31 bytes 
EA       NOP
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
42 bytes 
18   ... CLC      × 40
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 40
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 40
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 40
04 04    NOP $04
 Requires support for unofficial opcodes
43 bytes 
EA   ... NOP      × 40
4C xx xx JMP *+3
 Not relocatable code


84 cycles

5 bytes 
A9 39    LDA #57
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A2 0F    LDX #15
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 0F    LDX #15
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12; and writes in stack 
48       PHA
A9 32    LDA #50
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 32    LDA #50
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68   ... PLA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
30 FC    BMI *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
E6 xx    INC @zptemp
28       PLP
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires @zptemp; and writes in stack 
00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
68       PLA
98       TYA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9 2B    LDA #43
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
08       PHP
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
03 xx    SLO (@ptrtemp,X)
28       PLP
 Clobbers A, and X; requires @ptrtemp, and support for unofficial opcodes; and writes in stack 
08       PHP
A0 0A    LDY #10 ;hides 'ASL A'
88       DEY
D0 FC    BNE *-2
13 xx    SLO (@ptrtemp),Y
28       PLP
 Clobbers A, and Y; requires @ptrtemp, and support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
08       PHP
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 3
08       PHP
A2 0D    LDX #13
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 3
08       PHP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 0A    LDY #10
EA       NOP
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
28 bytes 
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N
42 bytes 
EA   ... NOP      × 42
 No requirements


85 cycles

5 bytes 
A9 3A    LDA #58
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 0C    LDX #12
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
98       TYA
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
48       PHA
A9 33    LDA #51
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 33    LDA #51
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A2 0A    LDX #10
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0A    LDY #10
EA       NOP
88       DEY
10 FC    BPL *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 0E    LDA #14
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 0E    LDA #14
E9 01    SBC #1
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 2C    LDA #44
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
48       PHA
30 FC    BMI *-2
A4 xx    LDY @zptemp
 Clobbers S, and Z&N; requires @zptemp; and writes in stack
10 bytes 
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack 
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
04 04    NOP $04
30 FB    BMI *-3
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
11 bytes 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 0E    LDX #14
CA       DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
29 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
30 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
31 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
32 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
43 bytes 
18   ... CLC      × 41
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 41
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 41
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 41
04 04    NOP $04
 Requires support for unofficial opcodes
44 bytes 
EA   ... NOP      × 41
4C xx xx JMP *+3
 Not relocatable code


86 cycles

5 bytes 
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
A9 3B    LDA #59
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
48       PHA
A9 34    LDA #52
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 34    LDA #52
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, V, and D; and writes in stack
8 bytes 
A5 A5    LDA $A5
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, V, and D 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
85 xx    STA @zptemp
30 FB    BMI *-3
28       PLP
 Clobbers Y; requires @zptemp; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12; and writes in stack 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
04 04    NOP $04
30 FB    BMI *-3
28       PLP
 Clobbers Y; requires support for unofficial opcodes; and writes in stack 
00 00    BRK 0
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
48       PHA
30 FC    BMI *-2
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack 
48       PHA
08       PHP
A2 0E    LDX #14
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
28       PLP
 Clobbers A; and writes in stack 
98       TYA
A0 08    LDY #8
EA   ... NOP      × 2
88       DEY
10 FB    BPL *-3
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A6 A6    LDX $A6
A2 0E    LDX #14
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
08       PHP
48       PHA
A9 2D    LDA #45
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires support for unofficial opcodes; and writes in stack
10 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
08       PHP
28       PLP
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; and writes in stack
11 bytes 
EA   ... NOP      × 2
48       PHA
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
12 bytes 
EA       NOP
08       PHP
48       PHA
98       TYA
A0 0C    LDY #12
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
29 bytes 
EA       NOP
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N
43 bytes 
EA   ... NOP      × 43
 No requirements


87 cycles

5 bytes 
A9 3C    LDA #60
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
48   ... PHA      × 2
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack 
A2 F8    LDX #248 ;hides 'SED'
68       PLA
E8       INX
D0 FB    BNE *-3
 Clobbers A, X, S, Z&N, and D 
A0 F8    LDY #248 ;hides 'SED'
68       PLA
C8       INY
D0 FB    BNE *-3
 Clobbers A, Y, S, Z&N, and D
7 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 3
D0 FA    BNE *-4
 Clobbers A, Z&N, and C 
EA       NOP
A2 0C    LDX #12
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
EA       NOP
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N 
48       PHA
A9 35    LDA #53
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 35    LDA #53
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
98       TYA
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 88    LDX #136 ;hides 'DEY'
EA       NOP
CA       DEX
30 FB    BMI *-3
28       PLP
 Clobbers X, and Y; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 0E    LDX #14
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 2E    LDA #46
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
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
 Requires support for unofficial opcodes; and writes in stack
11 bytes 
08       PHP
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
A8       TAY
68       PLA
28       PLP
 Writes in stack
30 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires writable $200-$2FF 
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
 Clobbers Z&N; and requires writable $300-$3FF 
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
 Clobbers Z&N; and requires writable $400-$4FF 
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
 Clobbers Z&N; and requires writable $500-$5FF 
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
 Clobbers Z&N; and requires writable $600-$6FF 
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
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
31 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
33 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
44 bytes 
18   ... CLC      × 42
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 42
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 42
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 42
04 04    NOP $04
 Requires support for unofficial opcodes
45 bytes 
EA   ... NOP      × 42
4C xx xx JMP *+3
 Not relocatable code


88 cycles

5 bytes 
A9 3D    LDA #61
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, V, and D 
EA       NOP
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 10    LDA #16
E9 01    SBC #1
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 0F    LDX #15
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 36    LDA #54
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 36    LDA #54
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
98       TYA
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
48       PHA
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, C, and V; requires @zptemp; and writes in stack 
08       PHP
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
08       PHP
48       PHA
A9 2F    LDA #47
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack
10 bytes 
48       PHA
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
28       PLP
 Clobbers A; and writes in stack 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts15
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires support for unofficial opcodes; and writes in stack 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
00 00    BRK 0
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
48       PHA
30 FC    BMI *-2
A4 xx    LDY @zptemp
 Clobbers S, and Z&N; requires @zptemp; and writes in stack
11 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
08       PHP
28       PLP
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; and writes in stack 
84 xx    STY @zptemp
A0 08    LDY #8
EA   ... NOP      × 2
88       DEY
10 FB    BPL *-3
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
48       PHA
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
68       PLA
28       PLP
 Clobbers S; and writes in stack
12 bytes 
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
 Writes in stack
30 bytes 
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
 Clobbers Z&N
44 bytes 
EA   ... NOP      × 44
 No requirements


89 cycles

5 bytes 
A9 3E    LDA #62
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 0A    LDX #10 ;hides 'ASL A'
EA       NOP
CA       DEX
D0 FB    BNE *-3
 Clobbers A, X, Z&N, and C 
A0 88    LDY #136 ;hides 'DEY'
EA   ... NOP      × 2
30 FB    BMI *-3
 Clobbers Y, and Z&N 
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
A2 0A    LDX #10
48       PHA
CA       DEX
10 FC    BPL *-2
 Clobbers X, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
F6 F6    INC $F6,X
90 FA    BCC *-4
 Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF 
48       PHA
A9 37    LDA #55
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 37    LDA #55
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
98       TYA
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, and Z&N
9 bytes 
08       PHP
A2 09    LDX #9
EA   ... NOP      × 2
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 08    LDY #8
EA   ... NOP      × 2
88       DEY
10 FB    BPL *-3
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9 30    LDA #48
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 0A    LDY #10
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 0A    LDY #10
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
31 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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 /
 Clobbers Z&N; and requires writable $200-$2FF 
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 /
 Clobbers Z&N; and requires writable $300-$3FF 
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 /
 Clobbers Z&N; and requires writable $400-$4FF 
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 /
 Clobbers Z&N; and requires writable $500-$5FF 
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 /
 Clobbers Z&N; and requires writable $600-$6FF 
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 /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
32 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
34 bytes 
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
 Clobbers Z&N
45 bytes 
18   ... CLC      × 43
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 43
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 43
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 43
04 04    NOP $04
 Requires support for unofficial opcodes
46 bytes 
EA   ... NOP      × 43
4C xx xx JMP *+3
 Not relocatable code


90 cycles

5 bytes 
A9 3F    LDA #63
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68       PLA
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 38    LDA #56
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 38    LDA #56
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, V, and D; and writes in stack 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 0F    LDX #15
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 0F    LDA #15
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
48       PHA
A9 31    LDA #49
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
85 xx    STA @zptemp
30 FB    BMI *-3
A8       TAY
68       PLA
 Clobbers Z&N; requires @zptemp; and writes in stack 
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
04 04    NOP $04
30 FB    BMI *-3
A8       TAY
68       PLA
 Clobbers Z&N; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
98       TYA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
11 bytes 
48       PHA
A5 A5    LDA $A5
98       TYA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 0F    LDX #15
CA       DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp 
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
 Clobbers S; requires support for unofficial opcodes; and writes in stack
12 bytes 
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
 Requires @zptemp; and writes in stack 
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
 Requires support for unofficial opcodes; and writes in stack 
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
 Clobbers S; and writes in stack
13 bytes 
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
 Writes in stack
30 bytes 
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
45 bytes 
EA   ... NOP      × 45
 No requirements


91 cycles

5 bytes 
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 40    LDA #64
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA   ... NOP      × 2
30 FA    BMI *-4
 Clobbers A, Z&N, C, and V 
48       PHA
A9 39    LDA #57
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 39    LDA #57
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
48   ... PHA      × 2
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 3
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C 
48       PHA
08       PHP
A2 0F    LDX #15
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
EA       NOP
98       TYA
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A6 A6    LDX $A6
A2 0F    LDX #15
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
28       PLP
 Clobbers A; requires @rts12; and writes in stack 
08       PHP
48       PHA
A9 32    LDA #50
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
84 xx    STY @zptemp
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
E6 xx    INC @zptemp
28       PLP
10 F9    BPL *-5
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
00 00    BRK 0
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
00 00    BRK 0
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
68       PLA
 Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
28       PLP
 Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
11 bytes 
EA   ... NOP      × 2
48       PHA
98       TYA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
98       TYA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack
12 bytes 
EA       NOP
08       PHP
48       PHA
98       TYA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
31 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
32 bytes 
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
 Clobbers Z&N, and C 
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
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires support for unofficial opcodes
33 bytes 
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
 Clobbers Z&N; and not relocatable code
34 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
46 bytes 
18   ... CLC      × 44
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 44
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 44
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 44
04 04    NOP $04
 Requires support for unofficial opcodes
47 bytes 
EA   ... NOP      × 44
4C xx xx JMP *+3
 Not relocatable code


92 cycles

5 bytes 
A9 41    LDA #65
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 0C    LDX #12
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A0 0C    LDY #12
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 3A    LDA #58
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 3A    LDA #58
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68       PLA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, V, and D 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
 Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
8 bytes 
EA       NOP
98       TYA
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 0C    LDX #12
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
84 xx    STY @zptemp
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 33    LDA #51
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 0E    LDA #14
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
31 bytes 
EA       NOP
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
46 bytes 
EA   ... NOP      × 46
 No requirements


93 cycles

5 bytes 
A9 42    LDA #66
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
EA       NOP
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 3B    LDA #59
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 3B    LDA #59
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
 Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
8 bytes 
98       TYA
A0 88    LDY #136 ;hides 'DEY'
EA   ... NOP      × 2
30 FB    BMI *-3
A8       TAY
 Clobbers A, and Z&N
9 bytes 
08       PHP
48       PHA
A9 34    LDA #52
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, C, V, and D; and writes in stack 
48       PHA
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; and writes in stack
10 bytes 
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
 Clobbers Z&N, C, V, and D; and writes in stack 
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
 Clobbers A; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12; and writes in stack 
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
 Clobbers Z&N, C, and V; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
38       SEC
A9 0F    LDA #15
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
85 xx    STA @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
48   ... PHA      × 2
D0 FB    BNE *-3
A5 xx    LDA @zptemp
 Clobbers S, Z&N, and C; requires @zptemp; and writes in stack
11 bytes 
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
 Writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
32 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
33 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
34 bytes 
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
47 bytes 
18   ... CLC      × 45
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 45
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 45
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 45
04 04    NOP $04
 Requires support for unofficial opcodes
48 bytes 
EA   ... NOP      × 45
4C xx xx JMP *+3
 Not relocatable code


94 cycles

5 bytes 
A9 43    LDA #67
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
48       PHA
A9 3C    LDA #60
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 3C    LDA #60
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP       \ × 2
28       PLP       /
10 F9    BPL *-5
 Clobbers A, Z&N, and C; and writes in stack 
38       SEC
A9 0C    LDA #12
EA       NOP
E9 01    SBC #1
10 FB    BPL *-3
 Clobbers A, Z&N, C, and V 
68       PLA
98       TYA
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 3
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 3
D0 FA    BNE *-4
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
98       TYA
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA       NOP
08       PHP
A2 0C    LDX #12
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9 35    LDA #53
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
32 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N
47 bytes 
EA   ... NOP      × 47
 No requirements


95 cycles

5 bytes 
A9 44    LDA #68
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and writes in stack 
68       PLA
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 3D    LDA #61
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 3D    LDA #61
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, V, and D; and writes in stack 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 10    LDA #16
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
48       PHA
A9 36    LDA #54
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
84 xx    STY @zptemp
A0 88    LDY #136 ;hides 'DEY'
EA   ... NOP      × 2
30 FB    BMI *-3
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
48   ... PHA      × 2
98       TYA
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
11 bytes 
48       PHA
A5 A5    LDA $A5
98       TYA
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
48       PHA
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4
68       PLA
28       PLP
 Requires @zptemp; and writes in stack 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack
12 bytes 
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
 Writes in stack
33 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires writable $200-$2FF 
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
 Clobbers Z&N; and requires writable $300-$3FF 
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
 Clobbers Z&N; and requires writable $400-$4FF 
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
 Clobbers Z&N; and requires writable $500-$5FF 
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
 Clobbers Z&N; and requires writable $600-$6FF 
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
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
34 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
35 bytes 
EA       NOP
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
48 bytes 
18   ... CLC      × 46
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 46
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 46
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 46
04 04    NOP $04
 Requires support for unofficial opcodes
49 bytes 
EA   ... NOP      × 46
4C xx xx JMP *+3
 Not relocatable code


96 cycles

5 bytes 
A2 12    LDX #18
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 45    LDA #69
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
48       PHA
A9 3E    LDA #62
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 3E    LDA #62
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
98       TYA
A0 0C    LDY #12
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 0A    LDX #10 ;hides 'ASL A'
EA       NOP
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers A, and X; and writes in stack 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
EA   ... NOP      × 2
30 FB    BMI *-3
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
08       PHP
A2 0A    LDX #10
24 24    BIT $24
CA       DEX
10 FB    BPL *-3
28       PLP
 Clobbers X; and writes in stack 
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
 Clobbers Z&N, C, and V; requires @zptemp, and writable $00-$FF; and writes in stack 
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
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9 37    LDA #55
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
28       PLP
 Clobbers A; and writes in stack
11 bytes 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
12 bytes 
08       PHP
48       PHA
98       TYA
A0 0A    LDY #10
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
28       PLP
 Writes in stack
32 bytes 
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N
48 bytes 
EA   ... NOP      × 48
 No requirements


97 cycles

5 bytes 
A9 46    LDA #70
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 0C    LDX #12
48       PHA
CA       DEX
D0 FC    BNE *-2
 Clobbers X, S, and Z&N; and writes in stack 
A0 0C    LDY #12
48       PHA
88       DEY
D0 FC    BNE *-2
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and writes in stack 
A2 07    LDX #7
08       PHP
28       PLP
CA       DEX
10 FB    BPL *-3
 Clobbers X, and Z&N; and writes in stack 
A2 0C    LDX #12
C5 C5    CMP $C5
CA       DEX
D0 FB    BNE *-3
 Clobbers X, Z&N, and C 
A2 0C    LDX #12
24 24    BIT $24
CA       DEX
D0 FB    BNE *-3
 Clobbers X, Z&N, and V 
A2 0C    LDX #12
A5 A5    LDA $A5
CA       DEX
D0 FB    BNE *-3
 Clobbers A, X, and Z&N 
A0 07    LDY #7
08       PHP
28       PLP
88       DEY
10 FB    BPL *-3
 Clobbers Y, and Z&N; and writes in stack 
A0 0C    LDY #12
C5 C5    CMP $C5
88       DEY
D0 FB    BNE *-3
 Clobbers Y, Z&N, and C 
A0 0C    LDY #12
24 24    BIT $24
88       DEY
D0 FB    BNE *-3
 Clobbers Y, Z&N, and V 
A0 0C    LDY #12
A5 A5    LDA $A5
88       DEY
D0 FB    BNE *-3
 Clobbers A, Y, and Z&N 
A2 0C    LDX #12
A4 A4    LDY $A4
CA       DEX
D0 FB    BNE *-3
 Clobbers X, Y, and Z&N 
A2 0C    LDX #12
85 xx    STA @zptemp
CA       DEX
D0 FB    BNE *-3
 Clobbers X, and Z&N; and requires @zptemp 
A0 0C    LDY #12
85 xx    STA @zptemp
88       DEY
D0 FB    BNE *-3
 Clobbers Y, and Z&N; and requires @zptemp 
48       PHA
A9 3F    LDA #63
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 3F    LDA #63
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A2 0C    LDX #12
04 04    NOP $04
CA       DEX
D0 FB    BNE *-3
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
A0 0C    LDY #12
04 04    NOP $04
88       DEY
D0 FB    BNE *-3
 Clobbers Y, and Z&N; and requires support for unofficial opcodes
8 bytes 
EA       NOP
98       TYA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 3
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
9 bytes 
48       PHA
98       TYA
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 38    LDA #56
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
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
 Writes in stack
33 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
34 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
35 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
36 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
49 bytes 
18   ... CLC      × 47
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 47
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 47
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 47
04 04    NOP $04
 Requires support for unofficial opcodes
50 bytes 
EA   ... NOP      × 47
4C xx xx JMP *+3
 Not relocatable code


98 cycles

5 bytes 
A9 47    LDA #71
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
EA       NOP
A2 12    LDX #18
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 12    LDA #18
E9 01    SBC #1
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 40    LDA #64
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 40    LDA #64
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and writes in stack 
48       PHA
98       TYA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA   ... NOP      × 2
30 FA    BMI *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA   ... NOP      × 2
30 FA    BMI *-4
28       PLP
 Clobbers A; and writes in stack 
A5 A5    LDA $A5
98       TYA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 39    LDA #57
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
10 bytes 
84 xx    STY @zptemp
A0 0C    LDY #12
EA       NOP
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
EA       NOP
48       PHA
98       TYA
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
68       PLA
28       PLP
 Requires @rts12; and writes in stack
12 bytes 
08       PHP
84 xx    STY @zptemp
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
28       PLP
 Requires @zptemp; and writes in stack 
00 00    BRK 0
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 2
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
68       PLA
28       PLP
 Clobbers S; requires support for unofficial opcodes; and writes in stack
13 bytes 
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
 Writes in stack
33 bytes 
EA       NOP
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N
49 bytes 
EA   ... NOP      × 49
 No requirements


99 cycles

5 bytes 
A9 48    LDA #72
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 0D    LDX #13
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A0 0E    LDY #14
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
48       PHA
A9 41    LDA #65
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 41    LDA #65
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
38       SEC
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
38   ... SEC      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and writes in stack 
08       PHP
A2 0C    LDX #12
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0C    LDY #12
EA       NOP
88       DEY
10 FC    BPL *-2
28       PLP
 Clobbers Y; and writes in stack 
68       PLA
98       TYA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 3A    LDA #58
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
 Clobbers S, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
28       PLP
 Clobbers A, and S; requires dummy interrupt handler; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
08       PHP
98       TYA
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 0F    LDY #15
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
34 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires writable $200-$2FF 
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
 Clobbers Z&N; and requires writable $300-$3FF 
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
 Clobbers Z&N; and requires writable $400-$4FF 
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
 Clobbers Z&N; and requires writable $500-$5FF 
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
 Clobbers Z&N; and requires writable $600-$6FF 
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
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
35 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
37 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
50 bytes 
18   ... CLC      × 48
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 48
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 48
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 48
04 04    NOP $04
 Requires support for unofficial opcodes
51 bytes 
EA   ... NOP      × 48
4C xx xx JMP *+3
 Not relocatable code


100 cycles

5 bytes 
A9 49    LDA #73
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 0A    LDX #10
68       PLA
CA       DEX
10 FC    BPL *-2
 Clobbers A, X, S, and Z&N 
A0 0A    LDY #10
68       PLA
88       DEY
10 FC    BPL *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 12    LDX #18
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 42    LDA #66
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 42    LDA #66
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 3B    LDA #59
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 88    LDY #136 ;hides 'DEY'
EA   ... NOP      × 2
30 FB    BMI *-3
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack
11 bytes 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp 
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
 Clobbers S; and writes in stack
12 bytes 
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
 Writes in stack
34 bytes 
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
 Clobbers Z&N
50 bytes 
EA   ... NOP      × 50
 No requirements


101 cycles

5 bytes 
A2 13    LDX #19
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
A9 4A    LDA #74
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
48       PHA
A9 43    LDA #67
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 43    LDA #67
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
EA       NOP
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA       NOP
48       PHA
30 FA    BMI *-4
 Clobbers A, S, Z&N, C, and V; and writes in stack
8 bytes 
38       SEC
A9 0D    LDA #13
EA       NOP
E9 01    SBC #1
10 FB    BPL *-3
 Clobbers A, Z&N, C, and V 
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
18       CLC
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
98       TYA
A0 0C    LDY #12
48       PHA
88       DEY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack 
48       PHA
08       PHP
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
98       TYA
A0 07    LDY #7
08       PHP
28       PLP
88       DEY
10 FB    BPL *-3
A8       TAY
 Clobbers A, and Z&N; and writes in stack 
98       TYA
A0 0C    LDY #12
C5 C5    CMP $C5
88       DEY
D0 FB    BNE *-3
A8       TAY
 Clobbers A, Z&N, and C 
98       TYA
A0 0C    LDY #12
24 24    BIT $24
88       DEY
D0 FB    BNE *-3
A8       TAY
 Clobbers A, Z&N, and V 
08       PHP
A6 A6    LDX $A6
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
98       TYA
A0 0C    LDY #12
85 xx    STA @zptemp
88       DEY
D0 FB    BNE *-3
A8       TAY
 Clobbers A, and Z&N; and requires @zptemp 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
28       PLP
 Clobbers A; requires @rts12, and @rts14; and writes in stack 
08       PHP
48       PHA
A9 3C    LDA #60
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
98       TYA
A0 0C    LDY #12
04 04    NOP $04
88       DEY
D0 FB    BNE *-3
A8       TAY
 Clobbers A, and Z&N; and requires support for unofficial opcodes 
EA       NOP
68       PLA
98       TYA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
10 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP       \ × 2
28       PLP       /
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
38       SEC
A9 0C    LDA #12
EA       NOP
E9 01    SBC #1
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 3
98       TYA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N
11 bytes 
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
EA   ... NOP      × 3
D0 FA    BNE *-4
68       PLA
28       PLP
 Writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
35 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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 /
 Clobbers Z&N; and requires writable $200-$2FF 
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 /
 Clobbers Z&N; and requires writable $300-$3FF 
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 /
 Clobbers Z&N; and requires writable $400-$4FF 
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 /
 Clobbers Z&N; and requires writable $500-$5FF 
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 /
 Clobbers Z&N; and requires writable $600-$6FF 
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 /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
36 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
38 bytes 
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
 Clobbers Z&N
51 bytes 
18   ... CLC      × 49
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 49
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 49
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 49
04 04    NOP $04
 Requires support for unofficial opcodes
52 bytes 
EA   ... NOP      × 49
4C xx xx JMP *+3
 Not relocatable code


102 cycles

5 bytes 
A9 4B    LDA #75
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9 44    LDA #68
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 44    LDA #68
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A2 12    LDX #18
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
EA       NOP
A2 0A    LDX #10
68       PLA
CA       DEX
10 FC    BPL *-2
 Clobbers A, X, S, and Z&N 
48   ... PHA      × 2
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
EA       NOP
A0 0A    LDY #10
68       PLA
88       DEY
10 FC    BPL *-2
 Clobbers A, Y, S, and Z&N
8 bytes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
98       TYA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
A6 A6    LDX $A6
A2 0D    LDX #13
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 0E    LDY #14
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
9 bytes 
48       PHA
98       TYA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 11    LDX #17
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 3D    LDA #61
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
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
 Writes in stack
34 bytes 
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
51 bytes 
EA   ... NOP      × 51
 No requirements


103 cycles

5 bytes 
A9 4C    LDA #76
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
EA       NOP
A2 13    LDX #19
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$08'
08       PHP ;first loop only
90 FC    BCC *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
7 bytes 
38       SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 12    LDX #18
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 45    LDA #69
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 45    LDA #69
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 4A    LDA #$4A ;hides 'LSR A'
48   ... PHA      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
98       TYA
A0 0E    LDY #14
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, and Z&N
9 bytes 
08       PHP
48       PHA
A9 3E    LDA #62
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 0C    LDY #12
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 0C    LDY #12
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack
11 bytes 
84 xx    STY @zptemp
A0 0C    LDY #12
C5 C5    CMP $C5
88       DEY
D0 FB    BNE *-3
A4 xx    LDY @zptemp
 Clobbers Z&N, and C; and requires @zptemp 
84 xx    STY @zptemp
A0 0C    LDY #12
24 24    BIT $24
88       DEY
D0 FB    BNE *-3
A4 xx    LDY @zptemp
 Clobbers Z&N, and V; and requires @zptemp 
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
 Requires @zptemp, and writable $00-$FF; and writes in stack 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
84 xx    STY @zptemp
A0 0C    LDY #12
04 04    NOP $04
88       DEY
D0 FB    BNE *-3
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
12 bytes 
08       PHP
48       PHA
98       TYA
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
68       PLA
28       PLP
 Writes in stack 
E6 xx    INC @zptemp
84 xx    STY @zptemp
A0 0C    LDY #12
EA       NOP
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
35 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
36 bytes 
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
 Clobbers Z&N, and C 
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
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires support for unofficial opcodes
37 bytes 
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
 Clobbers Z&N; and not relocatable code
38 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
52 bytes 
18   ... CLC      × 50
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 50
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 50
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 50
04 04    NOP $04
 Requires support for unofficial opcodes
53 bytes 
EA   ... NOP      × 50
4C xx xx JMP *+3
 Not relocatable code


104 cycles

5 bytes 
A9 4D    LDA #77
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A2 13    LDX #19
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 13    LDX #19
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 46    LDA #70
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 46    LDA #70
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
00 00    BRK 0
10 FA    BPL *-4
 Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
38       SEC
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
00 00    BRK 0
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires @zptemp, and dummy interrupt handler; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
00 00    BRK 0
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
68       PLA
98       TYA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
48       PHA
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
98       TYA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 0C    LDX #12
24 24    BIT $24
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0C    LDY #12
24 24    BIT $24
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9 3F    LDA #63
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
35 bytes 
EA       NOP
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
52 bytes 
EA   ... NOP      × 52
 No requirements


105 cycles

5 bytes 
A9 4E    LDA #78
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 0C    LDX #12
48       PHA
CA       DEX
10 FC    BPL *-2
 Clobbers X, S, and Z&N; and writes in stack 
68       PLA
A2 13    LDX #19
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
A0 0C    LDY #12
48       PHA
88       DEY
10 FC    BPL *-2
 Clobbers Y, S, and Z&N; and writes in stack 
68       PLA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 13    LDX #19
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 47    LDA #71
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 47    LDA #71
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 12    LDX #18
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 12    LDA #18
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 12    LDA #18
E9 01    SBC #1
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 40    LDA #64
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; and writes in stack
10 bytes 
C5 C5    CMP $C5
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
84 xx    STY @zptemp
A0 0E    LDY #14
EA       NOP
88       DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
48   ... PHA      × 2
98       TYA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
11 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA   ... NOP      × 2
30 FA    BMI *-4
68       PLA
28       PLP
 Writes in stack
36 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
37 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
38 bytes 
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
53 bytes 
18   ... CLC      × 51
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 51
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 51
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 51
04 04    NOP $04
 Requires support for unofficial opcodes
54 bytes 
EA   ... NOP      × 51
4C xx xx JMP *+3
 Not relocatable code


106 cycles

5 bytes 
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
A9 4F    LDA #79
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
EA       NOP
30 FB    BMI *-3
 Clobbers A, S, Z&N, C, and V; and writes in stack
7 bytes 
48       PHA
A9 48    LDA #72
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 48    LDA #72
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A2 0D    LDX #13
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0E    LDY #14
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
48   ... PHA      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack
9 bytes 
A5 A5    LDA $A5
38       SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
8C       TXA
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
28       PLP
 Clobbers A; requires @rts12, and @rts15; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
18       CLC
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
48       PHA
A9 41    LDA #65
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
38       SEC
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
38       SEC
10 FA    BPL *-4
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
EA       NOP
68       PLA
98       TYA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
10 bytes 
48       PHA
38   ... SEC      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
38   ... SEC      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
A5 A5    LDA $A5
98       TYA
A0 0E    LDY #14
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, and Z&N
11 bytes 
EA   ... NOP      × 2
48       PHA
98       TYA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
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
 Clobbers S; requires dummy interrupt handler; and writes in stack
12 bytes 
EA       NOP
08       PHP
48       PHA
98       TYA
A0 10    LDY #16
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
36 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N
53 bytes 
EA   ... NOP      × 53
 No requirements


107 cycles

5 bytes 
A9 50    LDA #80
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 18    LDX #24 ;hides 'CLC'
CA   ... DEX      × 2
D0 FB    BNE *-3
 Clobbers X, and Z&N 
A0 18    LDY #24 ;hides 'CLC'
88   ... DEY      × 2
D0 FB    BNE *-3
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 49    LDA #73
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 49    LDA #73
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68       PLA
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$08'
08       PHP ;first loop only
90 FC    BCC *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
8 bytes 
EA       NOP
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N
9 bytes 
48       PHA
98       TYA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 12    LDX #18
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 42    LDA #66
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FC    BNE *-2
68       PLA
28       PLP
 Writes in stack
37 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires writable $200-$2FF 
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
 Clobbers Z&N; and requires writable $300-$3FF 
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
 Clobbers Z&N; and requires writable $400-$4FF 
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
 Clobbers Z&N; and requires writable $500-$5FF 
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
 Clobbers Z&N; and requires writable $600-$6FF 
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
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
38 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
39 bytes 
EA       NOP
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
54 bytes 
18   ... CLC      × 52
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 52
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 52
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 52
04 04    NOP $04
 Requires support for unofficial opcodes
55 bytes 
EA   ... NOP      × 52
4C xx xx JMP *+3
 Not relocatable code


108 cycles

5 bytes 
A9 51    LDA #81
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
EA       NOP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 14    LDA #20
E9 01    SBC #1
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 13    LDX #19
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 4A    LDA #74
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 4A    LDA #74
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 43    LDA #67
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
EA       NOP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
EA       NOP
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack
10 bytes 
48       PHA
38       SEC
A9 0D    LDA #13
EA       NOP
E9 01    SBC #1
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 0D    LDA #13
EA       NOP
E9 01    SBC #1
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
F6 F6    INC $F6,X
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
18       CLC
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 3
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; and writes in stack
11 bytes 
48       PHA
98       TYA
A0 07    LDY #7
08       PHP
28       PLP
88       DEY
10 FB    BPL *-3
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68       PLA
28       PLP
 Requires @rts12, and @rts14; and writes in stack
12 bytes 
08       PHP
48       PHA
38       SEC
A9 0C    LDA #12
EA       NOP
E9 01    SBC #1
10 FB    BPL *-3
68       PLA
28       PLP
 Writes in stack 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 0D    LDX #13
EA       NOP
CA       DEX
10 FC    BPL *-2
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
36 bytes 
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N
54 bytes 
EA   ... NOP      × 54
 No requirements


109 cycles

5 bytes 
A9 52    LDA #82
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
A2 0C    LDX #12
68       PLA
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, S, and Z&N 
48       PHA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack 
A0 0C    LDY #12
68       PLA
88       DEY
D0 FC    BNE *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
A6 A6    LDX $A6
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 4B    LDA #75
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 4B    LDA #75
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
EA       NOP
30 FB    BMI *-3
 Clobbers A, S, Z&N, C, and V; and writes in stack
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
38       SEC
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
18       CLC
A9 74    LDA #116 ;hides 'NOP zp,X'
EA       NOP
69 01    ADC #1
10 FA    BPL *-4
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
68       PLA
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9 44    LDA #68
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 12    LDX #18
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
37 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
38 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
39 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
40 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
55 bytes 
18   ... CLC      × 53
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 53
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 53
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 53
04 04    NOP $04
 Requires support for unofficial opcodes
56 bytes 
EA   ... NOP      × 53
4C xx xx JMP *+3
 Not relocatable code


110 cycles

5 bytes 
A9 53    LDA #83
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68       PLA
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 4C    LDA #76
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 4C    LDA #76
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 13    LDX #19
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 45    LDA #69
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 0E    LDY #14
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack
11 bytes 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 13    LDX #19
CA       DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
12 bytes 
08       PHP
48       PHA
98       TYA
A0 0C    LDY #12
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
28       PLP
 Writes in stack
37 bytes 
EA       NOP
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N
55 bytes 
EA   ... NOP      × 55
 No requirements


111 cycles

5 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
A2 15    LDX #21
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and writes in stack 
48       PHA
A9 4D    LDA #77
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 4D    LDA #77
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
98       TYA
A0 18    LDY #24 ;hides 'CLC'
88   ... DEY      × 2
D0 FB    BNE *-3
A8       TAY
 Clobbers A, and Z&N 
48       PHA
08       PHP
A2 13    LDX #19
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
08       PHP
A6 A6    LDX $A6
A2 13    LDX #19
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9 46    LDA #70
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
38       SEC
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
38       SEC
10 F9    BPL *-5
28       PLP
 Clobbers A; requires @rts12, and @rts14; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
00 00    BRK 0
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and dummy interrupt handler; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
00 00    BRK 0
10 F9    BPL *-5
28       PLP
 Clobbers A; requires @zptemp, and dummy interrupt handler; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
00 00    BRK 0
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
00 00    BRK 0
10 F9    BPL *-5
28       PLP
 Clobbers A; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
84 xx    STY @zptemp
A0 0C    LDY #12
48       PHA
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers S, and Z&N; requires @zptemp; and writes in stack 
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
 Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
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
 Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
11 bytes 
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
 Writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
38 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires writable $200-$2FF 
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
 Clobbers Z&N; and requires writable $300-$3FF 
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
 Clobbers Z&N; and requires writable $400-$4FF 
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
 Clobbers Z&N; and requires writable $500-$5FF 
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
 Clobbers Z&N; and requires writable $600-$6FF 
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
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
39 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
41 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
56 bytes 
18   ... CLC      × 54
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 54
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 54
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 54
04 04    NOP $04
 Requires support for unofficial opcodes
57 bytes 
EA   ... NOP      × 54
4C xx xx JMP *+3
 Not relocatable code


112 cycles

5 bytes 
A9 55    LDA #85
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9 4E    LDA #78
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 4E    LDA #78
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
EA       NOP
68       PLA
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
48   ... PHA      × 2
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack 
EA       NOP
68       PLA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
 Clobbers A, Y, S, and Z&N
8 bytes 
EA       NOP
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 3
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
9 bytes 
48       PHA
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 0C    LDX #12
24 24    BIT $24
CA       DEX
10 FB    BPL *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0C    LDY #12
24 24    BIT $24
88       DEY
10 FB    BPL *-3
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 47    LDA #71
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 12    LDA #18
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
38 bytes 
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
 Clobbers Z&N
56 bytes 
EA   ... NOP      × 56
 No requirements


113 cycles

5 bytes 
A9 56    LDA #86
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
A2 0F    LDX #15
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A0 0F    LDY #15
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N
7 bytes 
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 4F    LDA #79
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 4F    LDA #79
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and writes in stack 
48       PHA
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 48    LDA #72
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
84 xx    STY @zptemp
A0 18    LDY #24 ;hides 'CLC'
88   ... DEY      × 2
D0 FB    BNE *-3
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
48   ... PHA      × 2
38       SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48       PHA
08       PHP
38       SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
28       PLP
 Clobbers A, and S; and writes in stack
11 bytes 
C5 C5    CMP $C5
48       PHA
38       SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A5 A5    LDA $A5
38       SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
68       PLA
28       PLP
 Requires @rts12, and @rts15; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
18       CLC
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
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
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 3
98       TYA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
12 bytes 
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
 Writes in stack
39 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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 /
 Clobbers Z&N; and requires writable $200-$2FF 
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 /
 Clobbers Z&N; and requires writable $300-$3FF 
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 /
 Clobbers Z&N; and requires writable $400-$4FF 
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 /
 Clobbers Z&N; and requires writable $500-$5FF 
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 /
 Clobbers Z&N; and requires writable $600-$6FF 
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 /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
40 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
42 bytes 
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
 Clobbers Z&N
57 bytes 
18   ... CLC      × 55
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 55
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 55
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 55
04 04    NOP $04
 Requires support for unofficial opcodes
58 bytes 
EA   ... NOP      × 55
4C xx xx JMP *+3
 Not relocatable code


114 cycles

5 bytes 
A9 57    LDA #87
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack 
48       PHA
A2 15    LDX #21
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
A6 A6    LDX $A6
A2 15    LDX #21
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 50    LDA #80
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 50    LDA #80
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A2 18    LDX #24 ;hides 'CLC'
CA   ... DEX      × 2
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 18    LDY #24 ;hides 'CLC'
88   ... DEY      × 2
D0 FB    BNE *-3
28       PLP
 Clobbers Y; and writes in stack 
68       PLA
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 49    LDA #73
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
08       PHP
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
38 bytes 
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
57 bytes 
EA   ... NOP      × 57
 No requirements


115 cycles

5 bytes 
A9 58    LDA #88
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V 
68       PLA
A2 15    LDX #21
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 15    LDX #21
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 51    LDA #81
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 51    LDA #81
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 14    LDA #20
E9 01    SBC #1
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 4A    LDA #74
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
00 00    BRK 0
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
11 bytes 
48       PHA
A5 A5    LDA $A5
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp 
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
 Requires support for unofficial opcodes; and writes in stack
12 bytes 
08       PHP
48       PHA
38       SEC
A9 0D    LDA #13
EA       NOP
E9 01    SBC #1
10 FB    BPL *-3
68       PLA
28       PLP
 Writes in stack
39 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
40 bytes 
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
 Clobbers Z&N, and C 
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
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires support for unofficial opcodes
41 bytes 
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
 Clobbers Z&N; and not relocatable code
42 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
58 bytes 
18   ... CLC      × 56
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 56
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 56
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 56
04 04    NOP $04
 Requires support for unofficial opcodes
59 bytes 
EA   ... NOP      × 56
4C xx xx JMP *+3
 Not relocatable code


116 cycles

5 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V 
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 52    LDA #82
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 52    LDA #82
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
08       PHP
A6 A6    LDX $A6
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
8C       TXA
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 4B    LDA #75
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
EA       NOP
68       PLA
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
10 bytes 
EA   ... NOP      × 3
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
38       SEC
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
38       SEC
10 F9    BPL *-5
28       PLP
 Clobbers A; requires @rts12, and @rts15; and writes in stack 
48       PHA
18       CLC
A9 74    LDA #116 ;hides 'NOP zp,X'
EA       NOP
69 01    ADC #1
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
18       CLC
A9 74    LDA #116 ;hides 'NOP zp,X'
EA       NOP
69 01    ADC #1
10 FA    BPL *-4
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack
11 bytes 
EA   ... NOP      × 2
48       PHA
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 0C    LDY #12
24 24    BIT $24
88       DEY
10 FB    BPL *-3
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
12 bytes 
EA       NOP
08       PHP
48       PHA
98       TYA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
39 bytes 
EA       NOP
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
58 bytes 
EA   ... NOP      × 58
 No requirements


117 cycles

5 bytes 
A9 5A    LDA #90
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
C5 CD    CMP <$CD ;hides 'CMP $0DA2'
A2 0D    LDX #13
CA       DEX
D0 FA    BNE *-4
 Clobbers X, Z&N, and C 
24 2C    BIT <$2C ;hides 'BIT $F3A2'
A2 F3    LDX #243
E8       INX
D0 FA    BNE *-4
 Clobbers X, Z&N, and V 
A5 AD    LDA <$AD ;hides 'LDA $0DA2'
A2 0D    LDX #13
CA       DEX
D0 FA    BNE *-4
 Clobbers A, X, and Z&N 
C5 CD    CMP <$CD ;hides 'CMP $F3A0'
A0 F3    LDY #243
C8       INY
D0 FA    BNE *-4
 Clobbers Y, Z&N, and C 
24 2C    BIT <$2C ;hides 'BIT $0CA0'
A0 0C    LDY #12
88       DEY
10 FA    BPL *-4
 Clobbers Y, Z&N, and V 
A5 AD    LDA <$AD ;hides 'LDA $0CA0'
A0 0C    LDY #12
88       DEY
10 FA    BPL *-4
 Clobbers A, Y, and Z&N 
A4 AC    LDY <$AC ;hides 'LDY $F3A2'
A2 F3    LDX #243
E8       INX
D0 FA    BNE *-4
 Clobbers X, Y, and Z&N 
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF 
F6 F6    INC $F6,X
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9 53    LDA #83
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 53    LDA #83
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
04 0C    NOP <$0C ;hides 'NOP $0CA2'
A2 0C    LDX #12
CA       DEX
10 FA    BPL *-4
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
04 0C    NOP <$0C ;hides 'NOP $8CA0'
A0 8C    LDY #140
88       DEY
30 FA    BMI *-4
 Clobbers Y, and Z&N; and requires support for unofficial opcodes 
EA       NOP
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V 
48   ... PHA      × 2
A2 15    LDX #21
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack
8 bytes 
98       TYA
A0 0F    LDY #15
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 3
A2 15    LDX #21
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
9 bytes 
48       PHA
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 4C    LDA #76
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
40 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
41 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
42 bytes 
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
59 bytes 
18   ... CLC      × 57
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 57
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 57
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 57
04 04    NOP $04
 Requires support for unofficial opcodes
60 bytes 
EA   ... NOP      × 57
4C xx xx JMP *+3
 Not relocatable code


118 cycles

5 bytes 
A9 5B    LDA #91
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V 
EA       NOP
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 15    LDX #21
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
A5 A5    LDA $A5
98       TYA
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 4D    LDA #77
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 18    LDY #24 ;hides 'CLC'
88   ... DEY      × 2
D0 FB    BNE *-3
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack
11 bytes 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
12 bytes 
EA   ... NOP      × 3
84 xx    STY @zptemp
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
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
 Requires @rts12, and @rts14; and writes in stack 
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
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
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
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
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
 Clobbers S; requires support for unofficial opcodes; and writes in stack
13 bytes 
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
 Writes in stack
40 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N
59 bytes 
EA   ... NOP      × 59
 No requirements


119 cycles

5 bytes 
A9 5C    LDA #92
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A0 88    LDY #136 ;hides 'DEY'
08       PHP
28       PLP
30 FB    BMI *-3
 Clobbers Y, and Z&N; and writes in stack 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack 
48       PHA
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack
7 bytes 
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V 
A6 A6    LDX $A6
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 55    LDA #85
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 55    LDA #85
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 4A    LDA #$4A ;hides 'LSR A'
48       PHA
08       PHP
28       PLP
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
C5 C5    CMP $C5
28       PLP
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and writes in stack 
68       PLA
98       TYA
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9 4E    LDA #78
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
08       PHP
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 3
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 3
08       PHP
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 0F    LDY #15
EA       NOP
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
41 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires writable $200-$2FF 
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
 Clobbers Z&N; and requires writable $300-$3FF 
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
 Clobbers Z&N; and requires writable $400-$4FF 
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
 Clobbers Z&N; and requires writable $500-$5FF 
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
 Clobbers Z&N; and requires writable $600-$6FF 
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
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
42 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
43 bytes 
EA       NOP
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
60 bytes 
18   ... CLC      × 58
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 58
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 58
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 58
04 04    NOP $04
 Requires support for unofficial opcodes
61 bytes 
EA   ... NOP      × 58
4C xx xx JMP *+3
 Not relocatable code


120 cycles

5 bytes 
A9 5D    LDA #93
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 11    LDX #17
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 10    LDY #16
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N 
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, and V
7 bytes 
98       TYA
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
48       PHA
A9 56    LDA #86
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 56    LDA #86
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 0F    LDX #15
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0F    LDY #15
EA       NOP
88       DEY
10 FC    BPL *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 4F    LDA #79
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
48   ... PHA      × 2
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
11 bytes 
48       PHA
A5 A5    LDA $A5
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 15    LDX #21
CA       DEX
10 FD    BPL *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
12 bytes 
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
 Requires @zptemp; and writes in stack 
48       PHA
08       PHP
48       PHA
38       SEC
A9 13    LDA #19
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack
13 bytes 
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
 Writes in stack
40 bytes 
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N
60 bytes 
EA   ... NOP      × 60
 No requirements


121 cycles

5 bytes 
A2 18    LDX #24
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 5E    LDA #94
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
08       PHP
28       PLP
30 FA    BMI *-4
 Clobbers A, Z&N, C, and V; and writes in stack 
E6 xx    INC @zptemp
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V; and requires @zptemp 
48       PHA
A9 57    LDA #87
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 57    LDA #87
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
90 FA    BCC *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
00 00    BRK 0
90 FA    BCC *-4
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48       PHA
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; and writes in stack 
48       PHA
08       PHP
A2 15    LDX #21
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
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
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
8C       TXA
C5 CD    CMP <$CD ;hides 'CMP $0DA2'
A2 0D    LDX #13
CA       DEX
D0 FA    BNE *-4
AA       TAX
 Clobbers A, Z&N, and C 
98       TYA
24 2C    BIT <$2C ;hides 'BIT $0CA0'
A0 0C    LDY #12
88       DEY
10 FA    BPL *-4
A8       TAY
 Clobbers A, Z&N, and V 
08       PHP
A6 A6    LDX $A6
A2 15    LDX #21
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
8C       TXA
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 50    LDA #80
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
8C       TXA
04 0C    NOP <$0C ;hides 'NOP $0CA2'
A2 0C    LDX #12
CA       DEX
10 FA    BPL *-4
AA       TAX
 Clobbers A, and Z&N; and requires support for unofficial opcodes 
EA       NOP
68       PLA
98       TYA
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
10 bytes 
EA   ... NOP      × 3
98       TYA
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
48   ... PHA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
85 xx    STA @zptemp
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
A5 xx    LDA @zptemp
 Clobbers S, Z&N, C, and V; and requires @zptemp
11 bytes 
EA   ... NOP      × 2
48       PHA
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
12 bytes 
EA       NOP
08       PHP
48       PHA
98       TYA
A0 13    LDY #19
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
41 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
42 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
43 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
44 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
61 bytes 
18   ... CLC      × 59
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 59
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 59
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 59
04 04    NOP $04
 Requires support for unofficial opcodes
62 bytes 
EA   ... NOP      × 59
4C xx xx JMP *+3
 Not relocatable code


122 cycles

5 bytes 
A9 5F    LDA #95
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
EA       NOP
B0 FB    BCS *-3
 Clobbers A, Z&N, C, V, and D 
EA       NOP
A2 11    LDX #17
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
EA       NOP
A0 10    LDY #16
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N 
F6 F6    INC $F6,X
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF 
48       PHA
A9 58    LDA #88
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 58    LDA #88
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
EA       NOP
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, and V
8 bytes 
EA       NOP
98       TYA
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N
9 bytes 
48       PHA
98       TYA
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 15    LDX #21
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 51    LDA #81
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
41 bytes 
EA       NOP
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N
61 bytes 
EA   ... NOP      × 61
 No requirements


123 cycles

5 bytes 
A9 60    LDA #96
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
EA       NOP
A2 18    LDX #24
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; and writes in stack 
38       SEC
A9 17    LDA #23
E9 01    SBC #1
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 52    LDA #82
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
48       PHA
8C       TXA
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
68       PLA
 Clobbers Z&N; requires @zptemp; and writes in stack 
86 xx    STX @zptemp
C5 CD    CMP <$CD ;hides 'CMP $0DA2'
A2 0D    LDX #13
CA       DEX
D0 FA    BNE *-4
A6 xx    LDX @zptemp
 Clobbers Z&N, and C; and requires @zptemp 
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
 Clobbers Z&N, and V; and requires @zptemp 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
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
 Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes 
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
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 3
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
12 bytes 
EA   ... NOP      × 3
48       PHA
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 3
84 xx    STY @zptemp
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
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
 Requires @rts12, and @rts15; and writes in stack 
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
 Requires support for unofficial opcodes; and writes in stack
13 bytes 
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
 Writes in stack
42 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires writable $200-$2FF 
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
 Clobbers Z&N; and requires writable $300-$3FF 
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
 Clobbers Z&N; and requires writable $400-$4FF 
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
 Clobbers Z&N; and requires writable $500-$5FF 
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
 Clobbers Z&N; and requires writable $600-$6FF 
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
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
43 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
45 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
62 bytes 
18   ... CLC      × 60
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 60
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 60
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 60
04 04    NOP $04
 Requires support for unofficial opcodes
63 bytes 
EA   ... NOP      × 60
4C xx xx JMP *+3
 Not relocatable code


124 cycles

4 bytes 
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
 Clobbers X, and Z&N
5 bytes 
A9 61    LDA #97
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A4 A4    LDY $A4
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 5A    LDA #90
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 5A    LDA #90
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack 
68   ... PLA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, and V
8 bytes 
98       TYA
A0 10    LDY #16
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, and Z&N
9 bytes 
08       PHP
C5 CD    CMP <$CD ;hides 'CMP $0DA2'
A2 0D    LDX #13
CA       DEX
D0 FA    BNE *-4
28       PLP
 Clobbers X; and writes in stack 
08       PHP
24 2C    BIT <$2C ;hides 'BIT $0CA0'
A0 0C    LDY #12
88       DEY
10 FA    BPL *-4
28       PLP
 Clobbers Y; and writes in stack 
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
 Clobbers Z&N, C, and V; requires @zptemp, and writable $00-$FF; and writes in stack 
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
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9 53    LDA #83
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 3
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48   ... PHA      × 2
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 0F    LDY #15
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 0F    LDY #15
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
42 bytes 
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
 Clobbers Z&N
62 bytes 
EA   ... NOP      × 62
 No requirements


125 cycles

5 bytes 
A9 62    LDA #98
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 1A    LDX #26 ;hides 'NOP'
CA   ... DEX      × 2
10 FB    BPL *-3
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
A0 1A    LDY #26 ;hides 'NOP'
88   ... DEY      × 2
10 FB    BPL *-3
 Clobbers Y, and Z&N; and requires support for unofficial opcodes 
68       PLA
A2 18    LDX #24
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 18    LDX #24
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 5B    LDA #91
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 5B    LDA #91
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Writes in stack
11 bytes 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
43 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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 /
 Clobbers Z&N; and requires writable $200-$2FF 
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 /
 Clobbers Z&N; and requires writable $300-$3FF 
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 /
 Clobbers Z&N; and requires writable $400-$4FF 
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 /
 Clobbers Z&N; and requires writable $500-$5FF 
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 /
 Clobbers Z&N; and requires writable $600-$6FF 
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 /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
44 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
46 bytes 
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
 Clobbers Z&N
63 bytes 
18   ... CLC      × 61
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 61
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 61
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 61
04 04    NOP $04
 Requires support for unofficial opcodes
64 bytes 
EA   ... NOP      × 61
4C xx xx JMP *+3
 Not relocatable code


126 cycles

5 bytes 
A2 18    LDX #24
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
A9 63    LDA #99
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
48       PHA
A9 5C    LDA #92
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 5C    LDA #92
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
08       PHP
28       PLP
30 FB    BMI *-3
28       PLP
 Clobbers Y; and writes in stack 
20 xx xx JSR @rts15
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; requires @rts12, and @rts15; and writes in stack 
EA       NOP
00 00    BRK 0
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48       PHA
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A, and S; and writes in stack 
EA       NOP
68   ... PLA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, and V 
48       PHA
08       PHP
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
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
 Clobbers Z&N, C, and V; and writes in stack 
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
 Clobbers A; and writes in stack 
EA       NOP
98       TYA
A0 10    LDY #16
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A6 A6    LDX $A6
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
48       PHA
A9 55    LDA #85
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
C5 C5    CMP $C5
28       PLP
D0 F9    BNE *-5
68       PLA
 Clobbers Z&N, and C; and writes in stack 
84 xx    STY @zptemp
A0 10    LDY #16
EA       NOP
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
EA   ... NOP      × 2
48       PHA
98       TYA
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack
12 bytes 
EA       NOP
08       PHP
48       PHA
98       TYA
A0 14    LDY #20
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
42 bytes 
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
63 bytes 
EA   ... NOP      × 63
 No requirements


127 cycles

5 bytes 
A9 64    LDA #100
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
48       PHA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack
6 bytes 
A2 11    LDX #17
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A0 12    LDY #18
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 5D    LDA #93
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 5D    LDA #93
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
00 00    BRK 0
B0 FA    BCS *-4
 Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack
8 bytes 
EA       NOP
98       TYA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 11    LDX #17
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 10    LDY #16
EA       NOP
88       DEY
10 FC    BPL *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
84 xx    STY @zptemp
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 56    LDA #86
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Writes in stack
43 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
44 bytes 
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
 Clobbers Z&N, and C 
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
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires support for unofficial opcodes
45 bytes 
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
 Clobbers Z&N; and not relocatable code
46 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
64 bytes 
18   ... CLC      × 62
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 62
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 62
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 62
04 04    NOP $04
 Requires support for unofficial opcodes
65 bytes 
EA   ... NOP      × 62
4C xx xx JMP *+3
 Not relocatable code


128 cycles

5 bytes 
A9 65    LDA #101
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
68       PLA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N
6 bytes 
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
 Clobbers A, and Z&N 
EA       NOP
A2 18    LDX #24
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
08       PHP
A2 18    LDX #24
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 5E    LDA #94
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 5E    LDA #94
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
9 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
08       PHP
28       PLP
30 FA    BMI *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
08       PHP
28       PLP
30 FA    BMI *-4
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 57    LDA #87
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
00 00    BRK 0
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack
11 bytes 
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
 Writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 10    LDY #16
EA       NOP
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
43 bytes 
EA       NOP
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
64 bytes 
EA   ... NOP      × 64
 No requirements


129 cycles

5 bytes 
A9 66    LDA #102
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
E6 xx    INC @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
 Clobbers X, and Z&N; and requires @zptemp 
A2 0F    LDX #15
48       PHA
CA       DEX
10 FC    BPL *-2
 Clobbers X, S, and Z&N; and writes in stack 
A0 0F    LDY #15
48       PHA
88       DEY
10 FC    BPL *-2
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 18    LDX #24
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 5F    LDA #95
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 5F    LDA #95
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack
8 bytes 
38       SEC
A9 12    LDA #18
EA       NOP
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
98       TYA
A0 1A    LDY #26 ;hides 'NOP'
88   ... DEY      × 2
10 FB    BPL *-3
A8       TAY
 Clobbers A, and Z&N; and requires support for unofficial opcodes 
68       PLA
98       TYA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
EA       NOP
B0 FB    BCS *-3
68       PLA
 Clobbers Z&N, C, V, and D; and writes in stack 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
EA       NOP
B0 FB    BCS *-3
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
98       TYA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA       NOP
08       PHP
A2 11    LDX #17
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 10    LDY #16
EA       NOP
88       DEY
10 FC    BPL *-2
28       PLP
 Clobbers Y; and writes in stack 
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
 Clobbers Z&N, C, and V; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9 58    LDA #88
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 3
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 15    LDY #21
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
44 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
45 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
46 bytes 
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
65 bytes 
18   ... CLC      × 63
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 63
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 63
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 63
04 04    NOP $04
 Requires support for unofficial opcodes
66 bytes 
EA   ... NOP      × 63
4C xx xx JMP *+3
 Not relocatable code


130 cycles

5 bytes 
A9 67    LDA #103
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
48   ... PHA      × 2
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
68       PLA
A2 18    LDX #24
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 18    LDX #24
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 60    LDA #96
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 60    LDA #96
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 18    LDX #24
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
9 bytes 
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
 Writes in stack
44 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N
65 bytes 
EA   ... NOP      × 65
 No requirements


131 cycles

5 bytes 
A2 19    LDX #25
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 68    LDA #104
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
08       PHP
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack
7 bytes 
48       PHA
A9 61    LDA #97
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 61    LDA #97
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
 Clobbers A, S, and Z&N; and writes in stack
8 bytes 
98       TYA
A0 12    LDY #18
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, and Z&N 
48       PHA
08       PHP
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
08       PHP
A4 A4    LDY $A4
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9 5A    LDA #90
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; requires dummy interrupt handler; and writes in stack 
00 00    BRK 0
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 10    LDY #16
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 10    LDY #16
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
84 xx    STY @zptemp
A0 1A    LDY #26 ;hides 'NOP'
88   ... DEY      × 2
10 FB    BPL *-3
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes
11 bytes 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
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
 Requires @zptemp, and writable $00-$FF; and writes in stack 
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
 Clobbers S; and writes in stack
12 bytes 
08       PHP
48       PHA
98       TYA
A0 0F    LDY #15
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
28       PLP
 Writes in stack
45 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires writable $200-$2FF 
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
 Clobbers Z&N; and requires writable $300-$3FF 
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
 Clobbers Z&N; and requires writable $400-$4FF 
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
 Clobbers Z&N; and requires writable $500-$5FF 
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
 Clobbers Z&N; and requires writable $600-$6FF 
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
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
46 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
47 bytes 
EA       NOP
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
66 bytes 
18   ... CLC      × 64
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 64
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 64
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 64
04 04    NOP $04
 Requires support for unofficial opcodes
67 bytes 
EA   ... NOP      × 64
4C xx xx JMP *+3
 Not relocatable code


132 cycles

5 bytes 
A9 69    LDA #105
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
03 xx    SLO (@ptrtemp,X)
 Clobbers A, X, Z&N, and C; and requires @ptrtemp, and support for unofficial opcodes 
68   ... PLA      × 2
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N
7 bytes 
BA       TSX
68       PLA
9A       TXS
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
 Clobbers A, X, and Z&N; and unsafe for interrupts 
A2 19    LDX #25
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9 62    LDA #98
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 62    LDA #98
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68       PLA
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
 Clobbers A, S, and Z&N 
AA       TAX
68       PLA
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
 Clobbers X, S, and Z&N 
48   ... PHA      × 2
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack
8 bytes 
EA       NOP
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 3
A2 18    LDX #24
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
08       PHP
A2 1A    LDX #26 ;hides 'NOP'
CA   ... DEX      × 2
10 FB    BPL *-3
28       PLP
 Clobbers X; requires support for unofficial opcodes; and writes in stack 
08       PHP
A0 1A    LDY #26 ;hides 'NOP'
88   ... DEY      × 2
10 FB    BPL *-3
28       PLP
 Clobbers Y; requires support for unofficial opcodes; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 18    LDX #24
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 5B    LDA #91
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
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
 Writes in stack
44 bytes 
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N
66 bytes 
EA   ... NOP      × 66
 No requirements


133 cycles

5 bytes 
A9 6A    LDA #106
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
EA       NOP
A2 19    LDX #25
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 19    LDA #25
E9 01    SBC #1
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 18    LDX #24
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 63    LDA #99
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 63    LDA #99
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
E6 xx    INC @zptemp
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
98       TYA
A0 0F    LDY #15
48       PHA
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 5C    LDA #92
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers S, and Z&N; requires @zptemp; and writes in stack
10 bytes 
84 xx    STY @zptemp
A0 12    LDY #18
EA       NOP
88       DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
20 xx xx JSR @rts15
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; requires @rts12, and @rts15; and writes in stack 
20 xx xx JSR @rts15
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; requires @rts12, and @rts15; and writes in stack 
EA       NOP
00 00    BRK 0
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; requires dummy interrupt handler; and writes in stack 
EA       NOP
00 00    BRK 0
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack
11 bytes 
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
 Writes in stack
45 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
46 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
47 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
48 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
67 bytes 
18   ... CLC      × 65
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 65
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 65
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 65
04 04    NOP $04
 Requires support for unofficial opcodes
68 bytes 
EA   ... NOP      × 65
4C xx xx JMP *+3
 Not relocatable code


134 cycles

5 bytes 
A9 6B    LDA #107
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 12    LDX #18
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A0 13    LDY #19
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 64    LDA #100
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 64    LDA #100
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
08       PHP
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
8 bytes 
08       PHP
A2 11    LDX #17
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 12    LDY #18
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
20 xx xx JSR @rts14
B0 F9    BCS *-5
 Clobbers A, Z&N, C, and V; requires @rts12, and @rts14; and writes in stack 
68       PLA
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 5D    LDA #93
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
00 00    BRK 0
B0 FA    BCS *-4
68       PLA
 Clobbers Z&N, C, and V; requires dummy interrupt handler; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
00 00    BRK 0
B0 FA    BCS *-4
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
08       PHP
98       TYA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 16    LDY #22
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
45 bytes 
EA       NOP
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N
67 bytes 
EA   ... NOP      × 67
 No requirements


135 cycles

5 bytes 
A9 6C    LDA #108
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68       PLA
A2 19    LDX #25
CA       DEX
10 FD    BPL *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 19    LDX #25
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 65    LDA #101
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 65    LDA #101
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 18    LDX #24
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 5E    LDA #94
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
E6 xx    INC @zptemp
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
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
 Writes in stack
46 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires writable $200-$2FF 
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
 Clobbers Z&N; and requires writable $300-$3FF 
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
 Clobbers Z&N; and requires writable $400-$4FF 
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
 Clobbers Z&N; and requires writable $500-$5FF 
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
 Clobbers Z&N; and requires writable $600-$6FF 
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
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
47 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
49 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
68 bytes 
18   ... CLC      × 66
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 66
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 66
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 66
04 04    NOP $04
 Requires support for unofficial opcodes
69 bytes 
EA   ... NOP      × 66
4C xx xx JMP *+3
 Not relocatable code


136 cycles

5 bytes 
A2 1B    LDX #27
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 6D    LDA #109
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
48       PHA
A9 66    LDA #102
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 66    LDA #102
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
EA   ... NOP      × 2
30 FA    BMI *-4
 Clobbers A, S, Z&N, C, and V; and writes in stack
8 bytes 
38       SEC
A9 12    LDA #18
EA       NOP
E9 01    SBC #1
10 FB    BPL *-3
 Clobbers A, Z&N, C, and V 
08       PHP
E6 xx    INC @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
68   ... PLA      × 2
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
 Clobbers A, S, and Z&N 
48       PHA
08       PHP
A2 18    LDX #24
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
08       PHP
A2 0F    LDX #15
24 24    BIT $24
CA       DEX
10 FB    BPL *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0F    LDY #15
24 24    BIT $24
88       DEY
10 FB    BPL *-3
28       PLP
 Clobbers Y; and writes in stack 
8C       TXA
A2 19    LDX #25
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 5F    LDA #95
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V; requires dummy interrupt handler; and writes in stack 
00 00    BRK 0
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack
10 bytes 
48       PHA
38       SEC
A9 12    LDA #18
EA       NOP
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 12    LDA #18
EA       NOP
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 3
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
F6 F6    INC $F6,X
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
98       TYA
A0 1A    LDY #26 ;hides 'NOP'
88   ... DEY      × 2
10 FB    BPL *-3
A8       TAY
68       PLA
 Clobbers Z&N; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers S, and Z&N; requires @zptemp; and writes in stack
11 bytes 
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
 Writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
46 bytes 
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
 Clobbers Z&N
68 bytes 
EA   ... NOP      × 68
 No requirements


137 cycles

5 bytes 
A9 6E    LDA #110
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
00 00    BRK 0
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
 Clobbers X, and Z&N; requires dummy interrupt handler; and writes in stack 
A2 11    LDX #17
48       PHA
CA       DEX
D0 FC    BNE *-2
 Clobbers X, S, and Z&N; and writes in stack 
A0 10    LDY #16
48       PHA
88       DEY
10 FC    BPL *-2
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A2 11    LDX #17
C5 C5    CMP $C5
CA       DEX
D0 FB    BNE *-3
 Clobbers X, Z&N, and C 
A2 11    LDX #17
24 24    BIT $24
CA       DEX
D0 FB    BNE *-3
 Clobbers X, Z&N, and V 
A2 11    LDX #17
A5 A5    LDA $A5
CA       DEX
D0 FB    BNE *-3
 Clobbers A, X, and Z&N 
A0 10    LDY #16
C5 C5    CMP $C5
88       DEY
10 FB    BPL *-3
 Clobbers Y, Z&N, and C 
A0 10    LDY #16
24 24    BIT $24
88       DEY
10 FB    BPL *-3
 Clobbers Y, Z&N, and V 
A0 10    LDY #16
A5 A5    LDA $A5
88       DEY
10 FB    BPL *-3
 Clobbers A, Y, and Z&N 
A2 11    LDX #17
A4 A4    LDY $A4
CA       DEX
D0 FB    BNE *-3
 Clobbers X, Y, and Z&N 
A2 11    LDX #17
85 xx    STA @zptemp
CA       DEX
D0 FB    BNE *-3
 Clobbers X, and Z&N; and requires @zptemp 
A0 10    LDY #16
85 xx    STA @zptemp
88       DEY
10 FB    BPL *-3
 Clobbers Y, and Z&N; and requires @zptemp 
48       PHA
A9 67    LDA #103
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 67    LDA #103
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A2 11    LDX #17
04 04    NOP $04
CA       DEX
D0 FB    BNE *-3
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
A0 10    LDY #16
04 04    NOP $04
88       DEY
10 FB    BPL *-3
 Clobbers Y, and Z&N; and requires support for unofficial opcodes
8 bytes 
EA       NOP
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
A6 A6    LDX $A6
A2 12    LDX #18
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 13    LDY #19
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N 
08       PHP
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 18    LDX #24
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 60    LDA #96
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
A6 xx    LDX @zptemp
28       PLP
 Requires @zptemp; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 17    LDA #23
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
47 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N, and V 
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 /
 Clobbers Z&N; and requires writable $200-$2FF 
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 /
 Clobbers Z&N; and requires writable $300-$3FF 
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 /
 Clobbers Z&N; and requires writable $400-$4FF 
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 /
 Clobbers Z&N; and requires writable $500-$5FF 
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 /
 Clobbers Z&N; and requires writable $600-$6FF 
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 /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
48 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
69 bytes 
18   ... CLC      × 67
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 67
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 67
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 67
04 04    NOP $04
 Requires support for unofficial opcodes
70 bytes 
EA   ... NOP      × 67
4C xx xx JMP *+3
 Not relocatable code


138 cycles

5 bytes 
A9 6F    LDA #111
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
EA       NOP
A2 1B    LDX #27
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
7 bytes 
38       SEC
A9 1A    LDA #26
E9 01    SBC #1
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 19    LDX #25
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 68    LDA #104
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 68    LDA #104
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
98       TYA
A0 13    LDY #19
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, and Z&N
9 bytes 
08       PHP
48       PHA
A9 61    LDA #97
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
68       PLA
 Clobbers S, and Z&N; and writes in stack 
48       PHA
08       PHP
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
28       PLP
 Clobbers A, and S; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 12    LDY #18
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 12    LDY #18
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
28       PLP
 Clobbers A; and writes in stack
11 bytes 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
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
 Requires dummy interrupt handler; and writes in stack 
86 xx    STX @zptemp
AA       TAX
68       PLA
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers S, and Z&N; and requires @zptemp
12 bytes 
08       PHP
48       PHA
98       TYA
A0 10    LDY #16
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
28       PLP
 Writes in stack 
E6 xx    INC @zptemp
84 xx    STY @zptemp
A0 12    LDY #18
EA       NOP
88       DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
46 bytes 
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
69 bytes 
EA   ... NOP      × 69
 No requirements


139 cycles

5 bytes 
A9 70    LDA #112
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A2 1B    LDX #27
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 1B    LDX #27
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 69    LDA #105
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 69    LDA #105
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
48       PHA
B0 FB    BCS *-3
 Clobbers A, S, Z&N, C, V, and D; and writes in stack
8 bytes 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
85 xx    STA @zptemp
B0 FA    BCS *-4
 Clobbers A, Z&N, C, V, and D; and requires @zptemp 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
04 04    NOP $04
B0 FA    BCS *-4
 Clobbers A, Z&N, C, V, and D; and requires support for unofficial opcodes 
08       PHP
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
03 xx    SLO (@ptrtemp,X)
28       PLP
 Clobbers A, and X; requires @ptrtemp, and support for unofficial opcodes; and writes in stack 
68       PLA
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
BA       TSX
68       PLA
9A       TXS
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
28       PLP
 Clobbers A, and X; writes in stack; and unsafe for interrupts 
08       PHP
A2 19    LDX #25
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9 62    LDA #98
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 18    LDX #24
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
08       PHP
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 3
08       PHP
A2 18    LDX #24
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 3
08       PHP
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
47 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
48 bytes 
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
 Clobbers Z&N, and C 
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
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires support for unofficial opcodes
49 bytes 
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
 Clobbers Z&N; and not relocatable code
70 bytes 
18   ... CLC      × 68
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 68
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 68
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 68
04 04    NOP $04
 Requires support for unofficial opcodes
71 bytes 
EA   ... NOP      × 68
4C xx xx JMP *+3
 Not relocatable code


140 cycles

5 bytes 
A9 71    LDA #113
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68       PLA
A2 1B    LDX #27
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 1B    LDX #27
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 6A    LDA #106
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 6A    LDA #106
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 19    LDX #25
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 19    LDA #25
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 19    LDA #25
E9 01    SBC #1
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 63    LDA #99
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
84 xx    STY @zptemp
A0 13    LDY #19
EA       NOP
88       DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
48   ... PHA      × 2
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
11 bytes 
48       PHA
A5 A5    LDA $A5
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
48       PHA
08       PHP
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
A6 xx    LDX @zptemp
28       PLP
 Clobbers S; requires @zptemp; and writes in stack
12 bytes 
08       PHP
84 xx    STY @zptemp
A0 12    LDY #18
EA       NOP
88       DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
28       PLP
 Requires @zptemp; and writes in stack 
20 xx xx JSR @rts15
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Requires @rts12, and @rts15; and writes in stack 
EA       NOP
00 00    BRK 0
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
48       PHA
38       SEC
A9 17    LDA #23
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack
13 bytes 
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
 Writes in stack
47 bytes 
EA       NOP
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
70 bytes 
EA   ... NOP      × 70
 No requirements


141 cycles

5 bytes 
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 72    LDA #114
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
48       PHA
A9 6B    LDA #107
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 6B    LDA #107
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack
8 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA       NOP
08       PHP
28       PLP
30 F9    BMI *-5
 Clobbers A, Z&N, C, and V; and writes in stack 
08       PHP
A2 12    LDX #18
EA       NOP
CA       DEX
10 FC    BPL *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 13    LDY #19
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
04 04    NOP $04
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
00 00    BRK 0
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
 Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack 
98       TYA
A0 10    LDY #16
48       PHA
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
98       TYA
A0 10    LDY #16
C5 C5    CMP $C5
88       DEY
10 FB    BPL *-3
A8       TAY
 Clobbers A, Z&N, and C 
98       TYA
A0 10    LDY #16
24 24    BIT $24
88       DEY
10 FB    BPL *-3
A8       TAY
 Clobbers A, Z&N, and V 
98       TYA
A0 10    LDY #16
85 xx    STA @zptemp
88       DEY
10 FB    BPL *-3
A8       TAY
 Clobbers A, and Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 64    LDA #100
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
98       TYA
A0 10    LDY #16
04 04    NOP $04
88       DEY
10 FB    BPL *-3
A8       TAY
 Clobbers A, and Z&N; and requires support for unofficial opcodes 
EA       NOP
68       PLA
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
10 bytes 
A5 A5    LDA $A5
98       TYA
A0 13    LDY #19
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, and Z&N 
48       PHA
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
68       PLA
 Clobbers Z&N; requires @zptemp; and writes in stack 
08       PHP
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
20 xx xx JSR @rts14
B0 F9    BCS *-5
68       PLA
 Clobbers Z&N, C, and V; requires @rts12, and @rts14; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
20 xx xx JSR @rts14
B0 F9    BCS *-5
28       PLP
 Clobbers A; requires @rts12, and @rts14; and writes in stack 
48   ... PHA      × 3
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
68       PLA
 Clobbers S, and Z&N; and writes in stack 
48   ... PHA      × 2
08       PHP
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
28       PLP
 Clobbers A, and S; and writes in stack
11 bytes 
EA   ... NOP      × 2
48       PHA
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
00 00    BRK 0
B0 FA    BCS *-4
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack
12 bytes 
EA       NOP
08       PHP
48       PHA
98       TYA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
48 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
49 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
71 bytes 
18   ... CLC      × 69
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 69
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 69
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 69
04 04    NOP $04
 Requires support for unofficial opcodes
72 bytes 
EA   ... NOP      × 69
4C xx xx JMP *+3
 Not relocatable code


142 cycles

5 bytes 
A9 73    LDA #115
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
A2 18    LDX #24 ;hides 'CLC'
EA       NOP
CA   ... DEX      × 2
10 FA    BPL *-4
 Clobbers X, and Z&N 
A0 18    LDY #24 ;hides 'CLC'
EA       NOP
88   ... DEY      × 2
10 FA    BPL *-4
 Clobbers Y, and Z&N 
48       PHA
A9 6C    LDA #108
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 6C    LDA #108
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68       PLA
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V; and requires support for unofficial opcodes
8 bytes 
EA       NOP
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N
9 bytes 
48       PHA
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 19    LDX #25
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 65    LDA #101
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
68       PLA
28       PLP
 Writes in stack
48 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 11
76 36    ROR $36,X /
 Clobbers Z&N
71 bytes 
EA   ... NOP      × 71
 No requirements


143 cycles

5 bytes 
A9 74    LDA #116
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
EA       NOP
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
18       CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
7 bytes 
38       SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 1B    LDX #27
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 6D    LDA #109
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 6D    LDA #109
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
F6 F6    INC $F6,X
28       PLP
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
48       PHA
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 66    LDA #102
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
38       SEC
A9 12    LDA #18
EA       NOP
E9 01    SBC #1
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 12    LDA #18
EA       NOP
E9 01    SBC #1
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
00 00    BRK 0
86 xx    STX @zptemp
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack 
84 xx    STY @zptemp
A0 10    LDY #16
48       PHA
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers S, and Z&N; requires @zptemp; and writes in stack
11 bytes 
48       PHA
8C       TXA
A2 19    LDX #25
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
68       PLA
 Clobbers Z&N; requires @zptemp; and writes in stack 
84 xx    STY @zptemp
A0 10    LDY #16
C5 C5    CMP $C5
88       DEY
10 FB    BPL *-3
A4 xx    LDY @zptemp
 Clobbers Z&N, and C; and requires @zptemp 
84 xx    STY @zptemp
A0 10    LDY #16
24 24    BIT $24
88       DEY
10 FB    BPL *-3
A4 xx    LDY @zptemp
 Clobbers Z&N, and V; and requires @zptemp 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
84 xx    STY @zptemp
A0 10    LDY #16
04 04    NOP $04
88       DEY
10 FB    BPL *-3
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes 
00 00    BRK 0
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 3
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
12 bytes 
08       PHP
48       PHA
38       SEC
A9 12    LDA #18
EA       NOP
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 12    LDX #18
EA       NOP
CA       DEX
10 FC    BPL *-2
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
49 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
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
 Clobbers Z&N; and requires writable $200-$2FF 
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
 Clobbers Z&N; and requires writable $300-$3FF 
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
 Clobbers Z&N; and requires writable $400-$4FF 
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
 Clobbers Z&N; and requires writable $500-$5FF 
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
 Clobbers Z&N; and requires writable $600-$6FF 
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
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
72 bytes 
18   ... CLC      × 70
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 70
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 70
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 70
04 04    NOP $04
 Requires support for unofficial opcodes
73 bytes 
EA   ... NOP      × 70
4C xx xx JMP *+3
 Not relocatable code


144 cycles

5 bytes 
A9 75    LDA #117
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 6E    LDA #110
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 6E    LDA #110
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
F6 F6    INC $F6,X
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires @zptemp, support for unofficial opcodes, and writable $00-$FF 
00 00    BRK 0
08       PHP
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
28       PLP
 Clobbers X; requires dummy interrupt handler; and writes in stack 
68       PLA
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 11    LDX #17
24 24    BIT $24
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 10    LDY #16
24 24    BIT $24
88       DEY
10 FB    BPL *-3
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9 67    LDA #103
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
08       PHP
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
48 bytes 
36 36    ROL $36,X \ × 12
76 36    ROR $36,X /
 Clobbers Z&N
72 bytes 
EA   ... NOP      × 72
 No requirements


145 cycles

5 bytes 
A9 76    LDA #118
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 11    LDX #17
48       PHA
CA       DEX
10 FC    BPL *-2
 Clobbers X, S, and Z&N; and writes in stack 
A2 0F    LDX #15
68       PLA
CA       DEX
10 FC    BPL *-2
 Clobbers A, X, S, and Z&N 
A0 12    LDY #18
48       PHA
88       DEY
D0 FC    BNE *-2
 Clobbers Y, S, and Z&N; and writes in stack 
A0 0F    LDY #15
68       PLA
88       DEY
10 FC    BPL *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 6F    LDA #111
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 6F    LDA #111
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 1B    LDX #27
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 1A    LDA #26
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 1A    LDA #26
E9 01    SBC #1
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 68    LDA #104
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 13    LDY #19
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack
11 bytes 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 1B    LDX #27
CA       DEX
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp 
48       PHA
08       PHP
48       PHA
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
68       PLA
28       PLP
 Clobbers S; and writes in stack
12 bytes 
08       PHP
48       PHA
98       TYA
A0 12    LDY #18
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
68       PLA
28       PLP
 Writes in stack
49 bytes 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
73 bytes 
18   ... CLC      × 71
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 71
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 71
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 71
04 04    NOP $04
 Requires support for unofficial opcodes
74 bytes 
EA   ... NOP      × 71
4C xx xx JMP *+3
 Not relocatable code


146 cycles

5 bytes 
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
A9 77    LDA #119
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
48       PHA
A9 70    LDA #112
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 70    LDA #112
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
18       CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
8 bytes 
04 04    NOP $04
18       CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
38       SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack 
48       PHA
08       PHP
A2 1B    LDX #27
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
98       TYA
A0 18    LDY #24 ;hides 'CLC'
EA       NOP
88   ... DEY      × 2
10 FA    BPL *-4
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A6 A6    LDX $A6
A2 1B    LDX #27
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9 69    LDA #105
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
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
 Clobbers Z&N, C, V, and D; requires @zptemp; and writes in stack 
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
 Clobbers A; requires @zptemp; and writes in stack 
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
 Clobbers Z&N, C, V, and D; requires support for unofficial opcodes; and writes in stack 
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
 Clobbers A; requires support for unofficial opcodes; and writes in stack
11 bytes 
EA   ... NOP      × 2
48       PHA
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
12 bytes 
EA       NOP
08       PHP
48       PHA
98       TYA
A0 18    LDY #24
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
49 bytes 
EA       NOP
36 36    ROL $36,X \ × 12
76 36    ROR $36,X /
 Clobbers Z&N
73 bytes 
EA   ... NOP      × 73
 No requirements


147 cycles

5 bytes 
A9 78    LDA #120
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9 71    LDA #113
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 71    LDA #113
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
EA       NOP
A2 0F    LDX #15
68       PLA
CA       DEX
10 FC    BPL *-2
 Clobbers A, X, S, and Z&N 
48   ... PHA      × 2
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
EA       NOP
A0 0F    LDY #15
68       PLA
88       DEY
10 FC    BPL *-2
 Clobbers A, Y, S, and Z&N 
68       PLA
18       CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V; and requires support for unofficial opcodes 
68       PLA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
8 bytes 
EA       NOP
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 3
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
9 bytes 
48       PHA
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 1B    LDX #27
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 6A    LDA #106
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 19    LDA #25
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
74 bytes 
18   ... CLC      × 72
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 72
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 72
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 72
04 04    NOP $04
 Requires support for unofficial opcodes
75 bytes 
EA   ... NOP      × 72
4C xx xx JMP *+3
 Not relocatable code


148 cycles

5 bytes 
A9 79    LDA #121
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A2 15    LDX #21
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 14    LDY #20
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N 
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$9A'
9A       TXS ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V
7 bytes 
38       SEC
A9 1D    LDA #29
E9 01    SBC #1
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 72    LDA #114
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 72    LDA #114
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
E6 xx    INC @zptemp
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires @zptemp, and dummy interrupt handler; and writes in stack 
48       PHA
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 6B    LDA #107
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
10 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA       NOP
08       PHP
28       PLP
30 F9    BMI *-5
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA       NOP
08       PHP
28       PLP
30 F9    BMI *-5
28       PLP
 Clobbers A; and writes in stack 
00 00    BRK 0
48       PHA
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
AA       TAX
68       PLA
 Clobbers Z&N; requires dummy interrupt handler; and writes in stack
11 bytes 
48       PHA
98       TYA
A0 10    LDY #16
C5 C5    CMP $C5
88       DEY
10 FB    BPL *-3
A8       TAY
68       PLA
 Clobbers Z&N, and C; and writes in stack 
48       PHA
98       TYA
A0 10    LDY #16
24 24    BIT $24
88       DEY
10 FB    BPL *-3
A8       TAY
68       PLA
 Clobbers Z&N, and V; and writes in stack 
84 xx    STY @zptemp
A0 18    LDY #24 ;hides 'CLC'
EA       NOP
88   ... DEY      × 2
10 FA    BPL *-4
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
48       PHA
98       TYA
A0 10    LDY #16
04 04    NOP $04
88       DEY
10 FB    BPL *-3
A8       TAY
68       PLA
 Clobbers Z&N; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 3
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
12 bytes 
48       PHA
A5 A5    LDA $A5
98       TYA
A0 13    LDY #19
EA       NOP
88       DEY
D0 FC    BNE *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
48       PHA
8C       TXA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
68       PLA
28       PLP
 Requires @zptemp; and writes in stack 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
20 xx xx JSR @rts14
B0 F9    BCS *-5
68       PLA
28       PLP
 Requires @rts12, and @rts14; and writes in stack 
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
 Clobbers S; and writes in stack
13 bytes 
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
 Writes in stack
74 bytes 
EA   ... NOP      × 74
 No requirements


149 cycles

5 bytes 
A9 7A    LDA #122
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 73    LDA #115
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 73    LDA #115
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
F6 F6    INC $F6,X
18       CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires @zptemp, support for unofficial opcodes, and writable $00-$FF 
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
68       PLA
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 18    LDX #24 ;hides 'CLC'
EA       NOP
CA   ... DEX      × 2
10 FA    BPL *-4
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 18    LDY #24 ;hides 'CLC'
EA       NOP
88   ... DEY      × 2
10 FA    BPL *-4
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9 6C    LDA #108
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
08       PHP
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
84 xx    STY @zptemp
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
75 bytes 
18   ... CLC      × 73
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 73
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 73
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 73
04 04    NOP $04
 Requires support for unofficial opcodes
76 bytes 
EA   ... NOP      × 73
4C xx xx JMP *+3
 Not relocatable code


150 cycles

5 bytes 
A9 7B    LDA #123
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68       PLA
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9 74    LDA #116
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 74    LDA #116
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
18       CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
18       CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 6D    LDA #109
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP
F6 F6    INC $F6,X
28       PLP
D0 F9    BNE *-5
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
48   ... PHA      × 2
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
11 bytes 
48       PHA
A5 A5    LDA $A5
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp
12 bytes 
08       PHP
48       PHA
38       SEC
A9 12    LDA #18
EA       NOP
E9 01    SBC #1
10 FB    BPL *-3
68       PLA
28       PLP
 Writes in stack
60 bytes 
26 26    ROL $26   \ × 15
66 26    ROR $26   /
 Clobbers Z&N
75 bytes 
EA   ... NOP      × 75
 No requirements


151 cycles

5 bytes 
A2 1E    LDX #30
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 1E    LDY #30
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 7C    LDA #124
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
20 xx xx JSR @rts14
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
48       PHA
A9 75    LDA #117
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 75    LDA #117
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$9A'
9A       TXS ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
8 bytes 
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP       \ × 2
28       PLP       /
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and writes in stack 
A5 A5    LDA $A5
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$9A'
9A       TXS ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V 
48       PHA
08       PHP
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
A5 A5    LDA $A5
38       SEC
A9 1D    LDA #29
E9 01    SBC #1
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A6 A6    LDX $A6
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
8C       TXA
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 6E    LDA #110
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
68       PLA
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N
10 bytes 
EA   ... NOP      × 3
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
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
 Clobbers Z&N, C, and V; requires @zptemp, support for unofficial opcodes, and writable $00-$FF; and writes in stack 
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
 Clobbers A; requires @zptemp, support for unofficial opcodes, and writable $00-$FF; and writes in stack 
84 xx    STY @zptemp
A0 12    LDY #18
48       PHA
88       DEY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
 Clobbers S, and Z&N; requires @zptemp; and writes in stack 
48   ... PHA      × 3
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
08       PHP
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
11 bytes 
EA   ... NOP      × 2
48       PHA
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
12 bytes 
EA       NOP
08       PHP
48       PHA
98       TYA
A0 1A    LDY #26
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
76 bytes 
18   ... CLC      × 74
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 74
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 74
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 74
04 04    NOP $04
 Requires support for unofficial opcodes
77 bytes 
EA   ... NOP      × 74
4C xx xx JMP *+3
 Not relocatable code


152 cycles

5 bytes 
A9 7D    LDA #125
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
7 bytes 
C9 CD    CMP #<$CD ;hides 'CMP $10A2'
A2 10    LDX #16
CA       DEX
10 FA    BPL *-4
 Clobbers X, Z&N, and C 
A2 2C    LDX #<$2C ;hides 'BIT $10A2'
A2 10    LDX #16
CA       DEX
10 FA    BPL *-4
 Clobbers X, Z&N, and V 
A9 AD    LDA #<$AD ;hides 'LDA $90A2'
A2 90    LDX #144
CA       DEX
30 FA    BMI *-4
 Clobbers A, X, and Z&N 
C9 CD    CMP #<$CD ;hides 'CMP $EFA0'
A0 EF    LDY #239
C8       INY
D0 FA    BNE *-4
 Clobbers Y, Z&N, and C 
A0 2C    LDY #<$2C ;hides 'BIT $6FA0'
A0 6F    LDY #111
C8       INY
10 FA    BPL *-4
 Clobbers Y, Z&N, and V 
A9 AD    LDA #<$AD ;hides 'LDA $EFA0'
A0 EF    LDY #239
C8       INY
D0 FA    BNE *-4
 Clobbers A, Y, and Z&N 
A0 AC    LDY #<$AC ;hides 'LDY $6FA2'
A2 6F    LDX #111
E8       INX
10 FA    BPL *-4
 Clobbers X, Y, and Z&N 
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9 76    LDA #118
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 76    LDA #118
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
80 0C    NOP #<$0C ;hides 'NOP $90A2'
A2 90    LDX #144
CA       DEX
30 FA    BMI *-4
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
80 0C    NOP #<$0C ;hides 'NOP $90A0'
A0 90    LDY #144
88       DEY
30 FA    BMI *-4
 Clobbers Y, and Z&N; and requires support for unofficial opcodes 
68       PLA
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$9A'
9A       TXS ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V 
48   ... PHA      × 2
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack
8 bytes 
98       TYA
A0 14    LDY #20
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, and Z&N 
EA   ... NOP      × 3
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
9 bytes 
48       PHA
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 6F    LDA #111
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 1A    LDA #26
E9 01    SBC #1
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
76 bytes 
EA   ... NOP      × 76
 No requirements


153 cycles

5 bytes 
A2 EA    LDX #234 ;hides 'NOP'
E8       INX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 EA    LDY #234 ;hides 'NOP'
C8       INY
D0 FC    BNE *-2
 Clobbers Y, and Z&N 
A9 7E    LDA #126
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
7 bytes 
38       SEC
A9 1E    LDA #30
E9 01    SBC #1
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
08       PHP
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 77    LDA #119
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 77    LDA #119
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
48       PHA
98       TYA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
48       PHA
A9 70    LDA #112
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
18       CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP
18       CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; requires dummy interrupt handler; and writes in stack
10 bytes 
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
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
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
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
C5 C5    CMP $C5
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
08       PHP
A5 A5    LDA $A5
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
38       SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48       PHA
08       PHP
38       SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; and writes in stack
11 bytes 
48       PHA
98       TYA
A0 18    LDY #24 ;hides 'CLC'
EA       NOP
88   ... DEY      × 2
10 FA    BPL *-4
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 18    LDY #24 ;hides 'CLC'
EA       NOP
88   ... DEY      × 2
10 FA    BPL *-4
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
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
 Clobbers S, Z&N, C, and V; and requires @zptemp, and support for unofficial opcodes
12 bytes 
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
 Requires @zptemp; and writes in stack 
EA   ... NOP      × 3
84 xx    STY @zptemp
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
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
 Requires support for unofficial opcodes; and writes in stack
13 bytes 
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
 Writes in stack
77 bytes 
18   ... CLC      × 75
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 75
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 75
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 75
04 04    NOP $04
 Requires support for unofficial opcodes
78 bytes 
EA   ... NOP      × 75
4C xx xx JMP *+3
 Not relocatable code


154 cycles

5 bytes 
A9 7F    LDA #127
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A2 1E    LDX #30
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
A2 11    LDX #17
68       PLA
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, S, and Z&N 
48       PHA
A0 1E    LDY #30
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
A0 10    LDY #16
68       PLA
88       DEY
10 FC    BPL *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
A6 A6    LDX $A6
A2 1E    LDX #30
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 1E    LDY #30
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 78    LDA #120
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 78    LDA #120
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
00 00... BRK 0    × 2
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
68       PLA
98       TYA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
9 bytes 
EA   ... NOP      × 2
98       TYA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9 71    LDA #113
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
EA       NOP
48       PHA
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
08       PHP
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 3
08       PHP
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 3
08       PHP
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 14    LDY #20
EA       NOP
88       DEY
10 FC    BPL *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
11 bytes 
08       PHP
48       PHA
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
77 bytes 
EA   ... NOP      × 77
 No requirements


155 cycles

5 bytes 
A9 80    LDA #128
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA       NOP
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
A2 15    LDX #21
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
A0 15    LDY #21
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N
7 bytes 
98       TYA
A0 1E    LDY #30
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
48       PHA
A9 79    LDA #121
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 79    LDA #121
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A2 15    LDX #21
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 14    LDY #20
EA       NOP
88       DEY
10 FC    BPL *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 1D    LDA #29
E9 01    SBC #1
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 1D    LDA #29
E9 01    SBC #1
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 72    LDA #114
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
E6 xx    INC @zptemp
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
11 bytes 
48       PHA
A5 A5    LDA $A5
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp 
48       PHA
08       PHP
48       PHA
38       SEC
A9 E9    LDA #$E9 ;hides 'SBC #$3A'
3A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Clobbers S; requires support for unofficial opcodes; and writes in stack
12 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA       NOP
08       PHP
28       PLP
30 F9    BMI *-5
68       PLA
28       PLP
 Writes in stack
78 bytes 
18   ... CLC      × 76
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 76
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 76
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 76
04 04    NOP $04
 Requires support for unofficial opcodes
79 bytes 
EA   ... NOP      × 76
4C xx xx JMP *+3
 Not relocatable code


156 cycles

5 bytes 
A9 69    LDA #$69 ;hides 'ADC #$38'
38       SEC ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
A2 1F    LDX #31
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 1F    LDY #31
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 7A    LDA #122
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 7A    LDA #122
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
00 00    BRK 0
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
8C       TXA
C9 CD    CMP #<$CD ;hides 'CMP $10A2'
A2 10    LDX #16
CA       DEX
10 FA    BPL *-4
AA       TAX
 Clobbers A, Z&N, and C 
8C       TXA
A2 2C    LDX #<$2C ;hides 'BIT $10A2'
A2 10    LDX #16
CA       DEX
10 FA    BPL *-4
AA       TAX
 Clobbers A, Z&N, and V 
08       PHP
A6 A6    LDX $A6
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
8C       TXA
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
 Clobbers A, and Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 73    LDA #115
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
98       TYA
80 0C    NOP #<$0C ;hides 'NOP $90A0'
A0 90    LDY #144
88       DEY
30 FA    BMI *-4
A8       TAY
 Clobbers A, and Z&N; and requires support for unofficial opcodes 
EA       NOP
68       PLA
98       TYA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, S, and Z&N
10 bytes 
EA   ... NOP      × 3
98       TYA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A8       TAY
 Clobbers A, and Z&N 
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
 Clobbers Z&N, C, and V; requires @zptemp, support for unofficial opcodes, and writable $00-$FF; and writes in stack 
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
 Clobbers A; requires @zptemp, support for unofficial opcodes, and writable $00-$FF; and writes in stack 
F6 F6    INC $F6,X
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
48   ... PHA      × 3
18       CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
08       PHP
18       CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 3
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; requires dummy interrupt handler; and writes in stack
11 bytes 
EA   ... NOP      × 2
48       PHA
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
84 xx    STY @zptemp
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp
12 bytes 
EA       NOP
08       PHP
48       PHA
98       TYA
A0 1B    LDY #27
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
52 bytes 
36 36    ROL $36,X \ × 13
76 36    ROR $36,X /
 Clobbers Z&N
78 bytes 
EA   ... NOP      × 78
 No requirements


157 cycles

5 bytes 
A9 82    LDA #130
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68       PLA
A2 EA    LDX #234 ;hides 'NOP'
E8       INX
D0 FC    BNE *-2
 Clobbers A, X, S, and Z&N 
68       PLA
A0 EA    LDY #234 ;hides 'NOP'
C8       INY
D0 FC    BNE *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 EA    LDY #234 ;hides 'NOP'
C8       INY
D0 FC    BNE *-2
A8       TAY
 Clobbers A, and Z&N 
EA       NOP
A2 15    LDX #21
EA       NOP
CA       DEX
10 FC    BPL *-2
 Clobbers X, and Z&N 
EA       NOP
A0 15    LDY #21
EA       NOP
88       DEY
10 FC    BPL *-2
 Clobbers Y, and Z&N 
48       PHA
A9 7B    LDA #123
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 7B    LDA #123
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
9 bytes 
48       PHA
98       TYA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A8       TAY
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 1D    LDX #29
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 1E    LDY #30
88       DEY
D0 FD    BNE *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 74    LDA #116
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
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
 Requires support for unofficial opcodes; and writes in stack 
08       PHP
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FC    BNE *-2
68       PLA
28       PLP
 Writes in stack
79 bytes 
18   ... CLC      × 77
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 77
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 77
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 77
04 04    NOP $04
 Requires support for unofficial opcodes
80 bytes 
EA   ... NOP      × 77
4C xx xx JMP *+3
 Not relocatable code


158 cycles

5 bytes 
A9 83    LDA #131
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$38'
38       SEC ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
EA       NOP
A2 1F    LDX #31
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 1F    LDY #31
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
08       PHP
A2 1E    LDX #30
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 1E    LDY #30
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 7C    LDA #124
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 7C    LDA #124
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
98       TYA
A0 1E    LDY #30
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
A5 A5    LDA $A5
98       TYA
A0 1E    LDY #30
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
20 xx xx JSR @rts14
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
20 xx xx JSR @rts14
D0 FA    BNE *-4
28       PLP
 Clobbers A; requires @rts12, and @rts14; and writes in stack 
08       PHP
48       PHA
A9 75    LDA #117
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP       \ × 2
28       PLP       /
D0 F9    BNE *-5
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 4A    LDA #$4A ;hides 'LSR A'
08       PHP       \ × 2
28       PLP       /
D0 F9    BNE *-5
28       PLP
 Clobbers A; and writes in stack
11 bytes 
48       PHA
8C       TXA
A2 1C    LDX #28
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
AA       TAX
68       PLA
 Clobbers Z&N; requires @zptemp; and writes in stack 
86 xx    STX @zptemp
C9 CD    CMP #<$CD ;hides 'CMP $10A2'
A2 10    LDX #16
CA       DEX
10 FA    BPL *-4
A6 xx    LDX @zptemp
 Clobbers Z&N, and C; and requires @zptemp 
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
 Clobbers Z&N, and V; and requires @zptemp 
F6 F6    INC $F6,X
84 xx    STY @zptemp
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
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
 Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes 
48   ... PHA      × 3
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
12 bytes 
EA   ... NOP      × 3
48       PHA
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 3
84 xx    STY @zptemp
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
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
 Requires @zptemp, support for unofficial opcodes, and writable $00-$FF; and writes in stack 
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
 Clobbers S; requires support for unofficial opcodes; and writes in stack
13 bytes 
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
 Writes in stack
79 bytes 
EA   ... NOP      × 79
 No requirements


159 cycles

5 bytes 
A9 84    LDA #132
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
48       PHA
A9 69    LDA #$69 ;hides 'ADC #$38'
38       SEC ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack 
48       PHA
A2 1F    LDX #31
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 1F    LDY #31
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A5 A5    LDA $A5
A9 69    LDA #$69 ;hides 'ADC #$38'
38       SEC ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
A6 A6    LDX $A6
A2 1F    LDX #31
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 1F    LDY #31
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 4A    LDA #$4A ;hides 'LSR A'
20 xx xx JSR @rts15
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
48       PHA
A9 7D    LDA #125
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 7D    LDA #125
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 4A    LDA #$4A ;hides 'LSR A'
00 00    BRK 0
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
8 bytes 
98       TYA
A0 15    LDY #21
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
 Clobbers A, and Z&N
9 bytes 
08       PHP
A2 2C    LDX #<$2C ;hides 'BIT $10A2'
A2 10    LDX #16
CA       DEX
10 FA    BPL *-4
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 2C    LDY #<$2C ;hides 'BIT $6FA0'
A0 6F    LDY #111
C8       INY
10 FA    BPL *-4
28       PLP
 Clobbers Y; and writes in stack 
84 xx    STY @zptemp
A0 EA    LDY #234 ;hides 'NOP'
C8       INY
D0 FC    BNE *-2
A4 xx    LDY @zptemp
 Clobbers Z&N; and requires @zptemp 
08       PHP
48       PHA
A9 76    LDA #118
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
98       TYA
A0 14    LDY #20
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
A0 14    LDY #20
EA       NOP
88       DEY
10 FC    BPL *-2
A8       TAY
28       PLP
 Clobbers A; and writes in stack
11 bytes 
08       PHP
48       PHA
98       TYA
A0 1C    LDY #28
88       DEY
D0 FD    BNE *-1
A8       TAY
68       PLA
28       PLP
 Writes in stack
80 bytes 
18   ... CLC      × 78
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 78
50 00    BVC *+2
 Clobbers V 
EA   ... NOP      × 78
85 xx    STA @zptemp
 Requires @zptemp 
EA   ... NOP      × 78
04 04    NOP $04
 Requires support for unofficial opcodes
81 bytes 
EA   ... NOP      × 78
4C xx xx JMP *+3
 Not relocatable code


160 cycles

5 bytes 
A9 85    LDA #133
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; requires delay_a_25_clocks; and writes in stack
6 bytes 
68       PLA
A9 69    LDA #$69 ;hides 'ADC #$38'
38       SEC ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V 
68       PLA
A2 1F    LDX #31
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 1F    LDY #31
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
98       TYA
A0 1F    LDY #31
88       DEY
D0 FD    BNE *-1
A8       TAY
 Clobbers A, and Z&N 
08       PHP
A2 EA    LDX #234 ;hides 'NOP'
E8       INX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
A2 1F    LDX #31
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
08       PHP
A0 EA    LDY #234 ;hides 'NOP'
C8       INY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
EA   ... NOP      × 2
A0 1F    LDY #31
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9 7E    LDA #126
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9 7E    LDA #126
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 1E    LDA #30
E9 01    SBC #1
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 1E    LDA #30
E9 01    SBC #1
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 77    LDA #119
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
38       SEC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
48   ... PHA      × 2
98       TYA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers S, and Z&N; and writes in stack
11 bytes 
48       PHA
A5 A5    LDA $A5
98       TYA
A0 1C    LDY #28
88       DEY
10 FD    BPL *-1
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
86 xx    STX @zptemp
A6 A6    LDX $A6
A2 1E    LDX #30
CA       DEX
D0 FD    BNE *-1
A6 xx    LDX @zptemp
 Clobbers Z&N; and requires @zptemp 
48       PHA
08       PHP
48       PHA
18       CLC
A9 EB    LDA #$EB ;hides 'SBC #$7A'
7A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Clobbers S; requires support for unofficial opcodes; and writes in stack 
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
 Clobbers S; requires dummy interrupt handler; and writes in stack
12 bytes 
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
 Requires support for unofficial opcodes; and writes in stack 
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
 Requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
48       PHA
38       SEC
A9 1C    LDA #28
E9 01    SBC #1
D0 FC    BNE *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack
13 bytes 
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
 Writes in stack
64 bytes 
26 26    ROL $26   \ × 16
66 26    ROR $26   /
 Clobbers Z&N
80 bytes 
EA   ... NOP      × 80
 No requirements


See also

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