Fixed cycle delay
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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 Jcc dest
branch_check bcc, dest
.endmacro
.macro Jcs dest
branch_check bcs, dest
.endmacro
.macro Jeq dest
branch_check beq, dest
.endmacro
.macro Jne dest
branch_check bne, dest
.endmacro
.macro Jmi dest
branch_check bmi, dest
.endmacro
.macro Jpl dest
branch_check bpl, dest
.endmacro
.macro Jvc dest
branch_check bvc, dest
.endmacro
.macro Jvs 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, orNOP), followed byRTS. - @rts15 means you know a memory address that contains a
JMPthat jumps to another location that containsRTS. Alternatively, it means you know a memory address that contains a harmless 3-cycle instruction that fits your constraints (such asLDA $00), followed byRTS. - 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.
{{#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
JSRinstructions, 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,Xalso 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,Xcause 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,Xdo 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),Yalso 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 $4018do 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-PLPis very efficient for 7 cycles of delay, but it does modify stack contents. S register remains unchanged though.PLA-PHAdoes not overwrite any bytes in stack. It just writes back the same byte. But it does clobber A and Z+N.- abs-indexed RMW instructions such as
INC abs,Xdo 7 cycles. We only do this either we know the value of X, 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 |
| 4 bytes | |
EA ... NOP × 4 |
No requirements |
- Unofficial ix and iy RMW instructions such as
SLO ($00,X)orSLO ($00),Ywould do 8 cycles for 2 bytes of code. We only do that if we know X or Y to be zero, and we have a known pointer to safely rewritable data.
9 cycles
| 3 bytes | |
|---|---|
EA NOP 08 PHP 28 PLP |
Writes in stack |
EA NOP 68 PLA 48 PHA |
Clobbers A, and Z&N |
| 4 bytes | |
A2 AE LDX #$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 | |
26 26 ROL $26 66 26 ROR $26 |
Clobbers Z&N |
08 PHP 24 24 BIT $24 28 PLP |
Writes in stack |
| 5 bytes | |
EA ... NOP × 5 |
No requirements |
- The
ROL-RORsequence 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 |
E6 xx INC @zptemp F6 F6 INC $F6,X |
Clobbers Z&N; and requires @zptemp, and writable $00-$FF |
| 5 bytes | |
A2 02 LDX #2 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 02 LDY #2 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
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-RTScauses 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-RORdoes 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 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 |
A6 A6 LDX $A6 26 26 ROL $26 66 26 ROR $26 |
Clobbers X, and Z&N |
A4 A4 LDY $A4 26 26 ROL $26 66 26 ROR $26 |
Clobbers Y, and Z&N |
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 |
| 6 bytes | |
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 |
08 PHP 28 PLP EA ... NOP × 4 |
Writes in stack |
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 03 LDX #3 CA DEX D0 FD BNE *-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 |
| 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 LDA #0 20 xx xx JSR delay_256a_16_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks, and delay_256a_16_clocks |
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 03 LDX #3 CA DEX D0 FD BNE *-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 |
| 7 bytes | |
A6 A6 LDX $A6 A2 03 LDX #3 CA DEX D0 FD BNE *-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 |
| 7 bytes | |
EA ... NOP × 3 08 PHP \ × 2 28 PLP / |
Writes in stack |
8C TXA A2 03 LDX #3 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 03 LDX #3 CA DEX D0 FD BNE *-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 04 LDX #4 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 04 LDY #4 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
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' 18 CLC 10 FC BPL *-2 |
Clobbers A, Z&N, and C |
A2 03 LDX #3 EA NOP CA DEX D0 FC BNE *-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 24 24 BIT $24 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 | |
26 26 ROL $26 66 26 ROR $26 36 36 ROL $36,X 76 36 ROR $36,X |
Clobbers Z&N |
08 PHP 24 24 BIT $24 36 36 ROL $36,X 76 36 ROR $36,X 28 PLP |
Writes in stack |
| 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 04 LDX #4 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 04 LDY #4 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
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 24 24 BIT $24 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 04 LDX #4 CA DEX D0 FD BNE *-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 04 LDX #4 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A4 A4 LDY $A4 A0 04 LDY #4 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA 08 PHP \ × 3 28 PLP / |
Clobbers S; and writes in stack |
| 8 bytes | |
36 36 ROL $36,X \ × 2 76 36 ROR $36,X / |
Clobbers Z&N |
08 PHP 48 PHA 26 26 ROL $26 66 26 ROR $26 68 PLA 28 PLP |
Writes in stack |
| 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 03 LDX #3 48 PHA CA DEX D0 FC BNE *-2 |
Clobbers X, S, and Z&N; and writes in stack |
A0 03 LDY #3 48 PHA 88 DEY D0 FC BNE *-2 |
Clobbers Y, S, and Z&N; and writes in stack |
68 PLA A2 04 LDX #4 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
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 | |
8C TXA A2 04 LDX #4 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 04 LDX #4 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 04 LDY #4 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
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 24 24 BIT $24 28 PLP 20 xx xx JSR @rts15 |
Requires @rts12, and @rts15; and writes in stack |
48 PHA A9 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 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 24 24 BIT $24 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 05 LDX #5 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 05 LDY #5 88 DEY D0 FD BNE *-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 |
8C TXA A2 03 LDX #3 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
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 LDA #0 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
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 |
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 |
A2 82 LDX #130 ;hides 'NOP #imm' 04 EA NOP $EA ;hides 'NOP' CA DEX 30 FA BMI *-4 |
Clobbers X, and Z&N; and requires support for unofficial opcodes |
A0 82 LDY #130 ;hides 'NOP #imm' 04 EA NOP $EA ;hides 'NOP' 88 DEY 30 FA BMI *-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 04 LDX #4 CA DEX D0 FD BNE *-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 8C TXA A2 04 LDX #4 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 3 A2 04 LDX #4 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 3 A0 04 LDY #4 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
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 |
86 xx STX @zptemp A2 04 LDX #4 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #1 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
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 | |
EA ... NOP × 2 A9 0A LDA #$0A ;hides 'ASL A' 10 FD BPL *-1 |
Clobbers A, Z&N, and C |
EA NOP A2 05 LDX #5 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 05 LDY #5 88 DEY D0 FD BNE *-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 04 LDX #4 CA DEX D0 FD BNE *-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 LDA #2 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
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 04 LDX #4 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 04 LDY #4 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
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' 18 CLC 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' 18 CLC 10 FC BPL *-2 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 03 LDX #3 EA NOP CA DEX D0 FC BNE *-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 8C TXA A2 04 LDX #4 CA DEX D0 FD BNE *-1 AA TAX |
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 8C TXA A2 04 LDX #4 CA DEX D0 FD BNE *-1 AA TAX |
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 LDA #3 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
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 05 LDX #5 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 05 LDY #5 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 05 LDX #5 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 05 LDX #5 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 05 LDY #5 88 DEY D0 FD BNE *-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 04 LDX #4 CA DEX D0 FD BNE *-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 2A LDA #$2A ;hides 'ROL A' 10 FD BPL *-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 06 LDX #6 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 06 LDY #6 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 6 bytes | |
48 PHA A9 0A LDA #$0A ;hides 'ASL A' 10 FD BPL *-1 68 PLA |
Clobbers Z&N, and C; 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 04 LDX #4 CA DEX D0 FD BNE *-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 | |
08 PHP A6 A6 LDX $A6 A2 04 LDX #4 CA DEX D0 FD BNE *-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 |
8C TXA A2 82 LDX #130 ;hides 'NOP #imm' 04 EA NOP $EA ;hides 'NOP' CA DEX 30 FA BMI *-4 AA TAX |
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 LDA #5 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 × 2 18 CLC 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 05 LDY #5 88 DEY D0 FD BNE *-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 |
A2 FA LDX #250 ;hides 'NOP' EA NOP E8 ... INX × 2 D0 FA BNE *-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 05 LDX #5 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 ... PHA × 2 A0 05 LDY #5 88 DEY D0 FD BNE *-1 |
Clobbers Y, S, and Z&N; and writes in stack |
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 8C TXA A2 05 LDX #5 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
A6 A6 LDX $A6 A2 04 LDX #4 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A4 A4 LDY $A4 A0 04 LDY #4 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
EA ... NOP × 2 20 xx xx JSR @rts14× 2 |
Requires @rts12, and @rts14; and writes in stack |
| 9 bytes | |
48 PHA 8C TXA A2 04 LDX #4 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 04 LDX #4 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 03 LDX #3 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 03 LDY #3 C5 C5 CMP $C5 88 DEY D0 FB BNE *-3 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 05 LDX #5 CA DEX D0 FD BNE *-1 A6 xx LDX @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 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 2A LDA #$2A ;hides 'ROL A' 10 FD BPL *-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 LDA #6 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 06 LDX #6 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 06 LDY #6 88 DEY D0 FD BNE *-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 05 LDX #5 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 05 LDY #5 88 DEY D0 FD BNE *-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 | |
8C TXA A2 04 LDX #4 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
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 |
85 xx STA @zptemp A9 LDA #0 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 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 | |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 04 LDX #4 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and writable $00-$FF |
86 xx STX @zptemp A2 82 LDX #130 ;hides 'NOP #imm' 04 EA NOP $EA ;hides 'NOP' CA DEX 30 FA BMI *-4 A6 xx LDX @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' 18 CLC 10 FC BPL *-2 |
Clobbers A, Z&N, and C |
A0 88 LDY #136 ;hides 'DEY' 88 DEY 30 FC BMI *-2 |
Clobbers Y, and Z&N |
| 6 bytes | |
48 PHA A2 06 LDX #6 CA DEX D0 FD BNE *-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 06 LDX #6 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
48 PHA A9 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 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 8C TXA A2 05 LDX #5 CA DEX D0 FD BNE *-1 AA TAX |
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 8C TXA A2 05 LDX #5 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
85 xx STA @zptemp A9 LDA #1 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 86 xx STX @zptemp A2 05 LDX #5 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #8 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 |
A0 88 LDY #136 ;hides 'DEY' 88 ... DEY × 2 30 FB BMI *-3 |
Clobbers Y, and Z&N |
A2 F8 LDX #248 ;hides 'SED' E8 ... INX × 2 D0 FB BNE *-3 |
Clobbers X, Z&N, and D |
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 06 LDX #6 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
| 7 bytes | |
8C TXA A2 06 LDX #6 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 06 LDX #6 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
48 PHA A9 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 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 | |
EA ... NOP × 2 48 PHA A9 0A LDA #$0A ;hides 'ASL A' 10 FD BPL *-1 68 PLA |
Clobbers Z&N, and C; and writes in stack |
EA ... NOP × 2 08 PHP A9 0A LDA #$0A ;hides 'ASL A' 10 FD BPL *-1 28 PLP |
Clobbers A; and writes in stack |
EA NOP 08 PHP A2 05 LDX #5 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 05 LDY #5 88 DEY D0 FD BNE *-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 |
85 xx STA @zptemp A9 LDA #2 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
86 xx STX @zptemp A2 04 LDX #4 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @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 07 LDX #7 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 07 LDY #7 88 DEY D0 FD BNE *-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 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 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 04 LDX #4 EA NOP CA DEX D0 FC BNE *-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 24 24 BIT $24 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 |
85 xx STA @zptemp A9 LDA #3 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
8C TXA A2 FA LDX #250 ;hides 'NOP' EA NOP E8 ... INX × 2 D0 FA BNE *-4 AA TAX |
Clobbers A, and Z&N; and requires support for unofficial opcodes |
EA NOP 68 PLA 8C TXA A2 05 LDX #5 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 10 bytes | |
08 PHP 48 PHA 18 CLC A9 2A LDA #$2A ;hides 'ROL A' 18 CLC 10 FC BPL *-2 68 PLA 28 PLP |
Writes in stack |
A5 A5 LDA $A5 8C TXA A2 04 LDX #4 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
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 86 xx STX @zptemp A2 05 LDX #5 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #10 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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' 18 CLC 10 FC BPL *-2 |
Clobbers A, S, Z&N, and C; and writes in stack |
48 PHA A0 88 LDY #136 ;hides 'DEY' 88 DEY 30 FC BMI *-2 |
Clobbers Y, S, and Z&N; and writes in stack |
A2 04 LDX #4 68 PLA CA DEX D0 FC BNE *-2 |
Clobbers A, X, S, and Z&N |
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' 18 CLC 10 FC BPL *-2 |
Clobbers A, Z&N, and C |
A2 04 LDX #4 EA ... NOP × 2 CA DEX D0 FB BNE *-3 |
Clobbers X, and Z&N |
A0 04 LDY #4 EA ... NOP × 2 88 DEY D0 FB BNE *-3 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 8C TXA A2 06 LDX #6 CA DEX D0 FD BNE *-1 AA TAX |
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 8C TXA A2 05 LDX #5 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 05 LDX #5 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 05 LDX #5 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 2 08 PHP A0 05 LDY #5 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 06 LDX #6 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #11 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 07 LDX #7 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 07 LDY #7 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
68 PLA A9 0A LDA #$0A ;hides 'ASL A' 18 CLC 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 |
98 TYA A0 88 LDY #136 ;hides 'DEY' 88 DEY 30 FC BMI *-2 A8 TAY |
Clobbers A, and Z&N |
08 PHP 18 CLC A9 0A LDA #$0A ;hides 'ASL A' 90 FD BCC *-1 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 06 LDX #6 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 06 LDY #6 88 DEY D0 FD BNE *-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 |
| 9 bytes | |
85 xx STA @zptemp A9 LDA #5 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 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 × 2 18 CLC 10 FA BPL *-4 A5 xx LDA @zptemp |
Clobbers Z&N, and C; and requires @zptemp |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 05 LDX #5 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and writable $00-$FF |
86 xx STX @zptemp A2 FA LDX #250 ;hides 'NOP' EA NOP E8 ... INX × 2 D0 FA BNE *-4 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes |
| 12 bytes | |
86 xx STX @zptemp A6 A6 LDX $A6 A2 04 LDX #4 EA NOP CA DEX D0 FC BNE *-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 0A LDA #$0A ;hides 'ASL 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 07 LDX #7 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 PHA A0 07 LDY #7 88 DEY D0 FD BNE *-1 |
Clobbers Y, S, and Z&N; and writes in stack |
| 7 bytes | |
A6 A6 LDX $A6 A2 07 LDX #7 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A4 A4 LDY $A4 A0 07 LDY #7 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 × 2 18 CLC 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 × 2 18 CLC 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 05 LDY #5 88 DEY D0 FD BNE *-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 |
85 xx STA @zptemp A9 LDA #6 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
08 PHP A2 FA LDX #250 ;hides 'NOP' EA NOP E8 ... INX × 2 D0 FA BNE *-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 05 LDX #5 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
48 ... PHA × 2 08 PHP A0 05 LDY #5 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 10 bytes | |
EA NOP 48 PHA 8C TXA A2 05 LDX #5 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP A6 A6 LDX $A6 A2 04 LDX #4 EA NOP CA DEX D0 FC BNE *-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 86 xx STX @zptemp A2 06 LDX #6 CA DEX D0 FD BNE *-1 A6 xx LDX @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 8C TXA A2 04 LDX #4 CA DEX D0 FD BNE *-1 AA TAX 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 $04 |
Requires support for unofficial opcodes |
| 21 bytes | |
EA ... NOP × 18 4C xx xx JMP *+3 |
Not relocatable code |
40 cycles
| 5 bytes | |
|---|---|
A9 LDA #13 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 05 LDX #5 ;hides 'ORA zp' EA NOP CA DEX D0 FB BNE *-3 |
Clobbers A, X, and Z&N |
A0 05 LDY #5 ;hides 'ORA zp' EA NOP 88 DEY D0 FB BNE *-3 |
Clobbers A, Y, and Z&N |
68 PLA A9 E9 LDA #$E9 ;hides 'SBC #$2A' 2A ROL A ;first loop only B0 FC BCS *-2 |
Clobbers A, S, Z&N, C, and V |
| 7 bytes | |
8C TXA A2 07 LDX #7 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 07 LDX #7 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 07 LDY #7 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 06 LDX #6 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 06 LDY #6 88 DEY D0 FD BNE *-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 | |
|---|---|
18 CLC A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, Z&N, and C |
A2 08 LDX #8 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 08 LDY #8 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 7 bytes | |
48 PHA A9 0A LDA #$0A ;hides 'ASL A' 18 CLC 10 FC BPL *-2 68 PLA |
Clobbers Z&N, and C; and writes in stack |
08 PHP A9 0A LDA #$0A ;hides 'ASL A' 18 CLC 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 06 LDX #6 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
| 9 bytes | |
8C TXA A2 04 LDX #4 EA ... NOP × 2 CA DEX D0 FB BNE *-3 AA TAX |
Clobbers A, and Z&N |
08 PHP A6 A6 LDX $A6 A2 06 LDX #6 CA DEX D0 FD BNE *-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 LDA #0 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #8 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 C5 C5 CMP $C5 48 PHA 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 LDA #15 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
48 PHA A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-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' 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 07 LDY #7 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF |
48 PHA A9 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 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 07 LDX #7 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 ... PHA × 2 A0 07 LDY #7 88 DEY D0 FD BNE *-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 |
EA NOP 8C TXA A2 07 LDX #7 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
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 × 3 A2 07 LDX #7 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 3 A0 07 LDY #7 88 DEY D0 FD BNE *-1 |
Clobbers Y, 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 |
08 PHP A0 88 LDY #136 ;hides 'DEY' 88 ... DEY × 2 30 FB BMI *-3 28 PLP |
Clobbers Y; and writes in stack |
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 8C TXA A2 06 LDX #6 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
86 xx STX @zptemp A2 07 LDX #7 CA DEX D0 FD BNE *-1 A6 xx LDX @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 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 | |
EA ... NOP × 2 08 PHP 48 PHA 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 LDA #16 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
68 PLA A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, S, Z&N, and C |
| 6 bytes | |
EA ... NOP × 2 A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, Z&N, and C |
A2 06 LDX #6 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 06 LDY #6 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
| 7 bytes | |
48 PHA A9 E9 LDA #$E9 ;hides 'SBC #$2A' 2A ROL A ;first loop only B0 FC BCS *-2 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
08 PHP A9 E9 LDA #$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 07 LDX #7 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 07 LDY #7 88 DEY D0 FD BNE *-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 8C TXA A2 07 LDX #7 CA DEX D0 FD BNE *-1 AA TAX |
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 LDA #2 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #10 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 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 | |
86 xx STX @zptemp A2 04 LDX #4 EA ... NOP × 2 CA DEX D0 FB BNE *-3 A6 xx LDX @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 LDA #17 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC 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 08 LDX #8 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
| 7 bytes | |
A6 A6 LDX $A6 A2 08 LDX #8 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
48 PHA A9 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 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' 18 CLC 10 FC BPL *-2 68 PLA |
Clobbers S, Z&N, and C; and writes in stack |
68 PLA 8C TXA A2 07 LDX #7 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
48 PHA 08 PHP A9 0A LDA #$0A ;hides 'ASL A' 18 CLC 10 FC BPL *-2 28 PLP |
Clobbers A, and S; and writes in stack |
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' 18 CLC 10 FC BPL *-2 68 PLA |
Clobbers Z&N, and C; and writes in stack |
EA ... NOP × 2 8C TXA A2 07 LDX #7 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP A5 A5 LDA $A5 A9 0A LDA #$0A ;hides 'ASL A' 18 CLC 10 FC BPL *-2 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 04 LDX #4 EA ... NOP × 2 CA DEX D0 FB BNE *-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 LDA #3 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #11 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 8C TXA A2 06 LDX #6 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 86 xx STX @zptemp A2 07 LDX #7 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP F6 F6 INC $F6,X 48 PHA 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 8C TXA A2 05 LDX #5 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #18 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
F6 F6 INC $F6,X A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF |
EA NOP 68 PLA A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, S, Z&N, and C |
68 PLA A2 08 LDX #8 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 08 LDY #8 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 08 LDX #8 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 08 LDX #8 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 08 LDY #8 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 07 LDX #7 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 07 LDY #7 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' 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 07 LDX #7 CA DEX D0 FD BNE *-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 09 LDY #9 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #19 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
48 PHA A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 68 PLA |
Clobbers Z&N, and C; and writes in stack |
68 PLA 48 PHA A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, Z&N, and C |
08 PHP A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 28 PLP |
Clobbers A; and writes in stack |
| 8 bytes | |
08 PHP 28 PLP 00 00... BRK 0 × 3 |
Requires dummy interrupt handler; and writes in stack |
48 PHA 08 PHP A2 07 LDX #7 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
48 PHA 08 PHP A0 07 LDY #7 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 9 bytes | |
08 PHP A6 A6 LDX $A6 A2 07 LDX #7 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A4 A4 LDY $A4 A0 07 LDY #7 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
8C TXA A2 07 LDX #7 CA DEX D0 FD BNE *-1 F6 xx INC @zptemp,X AA TAX |
Clobbers A, and Z&N; and requires @zptemp |
08 PHP 48 PHA A9 LDA #5 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #13 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
EA NOP 68 PLA 8C TXA A2 07 LDX #7 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 10 bytes | |
48 PHA 98 TYA A0 88 LDY #136 ;hides 'DEY' 88 ... DEY × 2 30 FB BMI *-3 A8 TAY 68 PLA |
Clobbers Z&N; and writes in stack |
EA ... NOP × 3 8C TXA A2 07 LDX #7 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA NOP 20 xx xx JSR @rts14 20 xx xx JSR @rts15× 2 |
Requires @rts12, @rts14, and @rts15; and writes in stack |
85 xx STA @zptemp 68 PLA A9 E9 LDA #$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 × 2 18 CLC 10 FA BPL *-4 68 PLA 28 PLP |
Writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 07 LDX #7 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #20 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
68 ... PLA × 2 A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, S, Z&N, and C |
| 7 bytes | |
BA TSX 68 PLA 9A TXS A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF |
F6 F6 INC $F6,X A0 08 LDY #8 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF |
48 PHA A9 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 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' 18 CLC 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 08 LDX #8 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 ... PHA × 2 A0 08 LDY #8 88 DEY D0 FD BNE *-1 |
Clobbers Y, S, and Z&N; and writes in stack |
EA NOP 68 PLA A2 08 LDX #8 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
EA NOP 68 PLA A0 08 LDY #8 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 8 bytes | |
8C TXA A2 06 LDX #6 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 3 A2 08 LDX #8 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 3 A0 08 LDY #8 88 DEY D0 FD BNE *-1 |
Clobbers Y, 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 |
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 8C TXA A2 07 LDX #7 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 07 LDX #7 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 07 LDX #7 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 2 08 PHP A0 07 LDY #7 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 08 LDX #8 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 LDA #21 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
EA NOP A2 09 LDX #9 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 09 LDY #9 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 7 bytes | |
48 PHA 18 CLC A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 68 PLA |
Clobbers Z&N, and C; and writes in stack |
EA NOP 68 PLA 48 PHA A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, Z&N, and C |
08 PHP 18 CLC A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 08 LDX #8 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 08 LDY #8 88 DEY D0 FD BNE *-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' 18 CLC 10 FC BPL *-2 68 PLA 28 PLP |
Writes in stack |
85 xx STA @zptemp A9 LDA #15 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
C5 C5 CMP $C5 85 xx STA @zptemp A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 A5 xx LDA @zptemp |
Clobbers Z&N, and C; and requires @zptemp |
| 11 bytes | |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 07 LDX #7 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and writable $00-$FF |
| 12 bytes | |
EA ... NOP × 3 86 xx STX @zptemp A2 07 LDX #7 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #22 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 06 LDX #6 48 PHA CA DEX D0 FC BNE *-2 |
Clobbers X, S, and Z&N; and writes in stack |
| 7 bytes | |
18 CLC A9 0A LDA #$0A ;hides 'ASL A' 24 24 BIT $24 90 FB BCC *-3 |
Clobbers A, Z&N, C, and V |
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 |
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 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 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 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 68 PLA |
Clobbers S, Z&N, and C; and writes in stack |
EA NOP 68 ... PLA × 2 A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, S, Z&N, and C |
48 PHA 08 PHP A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 28 PLP |
Clobbers A, and S; and writes in stack |
| 8 bytes | |
C5 C5 CMP $C5 48 PHA A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 68 PLA |
Clobbers Z&N, and C; and writes in stack |
26 26 ROL $26 66 26 ROR $26 A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, Z&N, and C |
08 PHP A5 A5 LDA $A5 A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 28 PLP |
Clobbers A; and writes in stack |
68 PLA 8C TXA A2 08 LDX #8 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 08 LDX #8 CA DEX D0 FD BNE *-1 AA TAX |
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 07 LDY #7 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 LDA #8 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #16 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 ... PHA × 2 08 PHP A2 07 LDX #7 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
48 ... PHA × 2 08 PHP A0 07 LDY #7 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
85 xx STA @zptemp 68 PLA A9 0A LDA #$0A ;hides 'ASL 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 |
86 xx STX @zptemp A2 06 LDX #6 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @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 $04 |
Requires support for unofficial opcodes |
| 26 bytes | |
EA ... NOP × 23 4C xx xx JMP *+3 |
Not relocatable code |
50 cycles
| 5 bytes | |
|---|---|
A9 LDA #23 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A9 E9 LDA #$E9 ;hides 'SBC #$2A' 2A ROL A ;first loop only EA NOP B0 FB BCS *-3 |
Clobbers A, Z&N, C, and V |
A2 07 LDX #7 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 07 LDY #7 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
| 7 bytes | |
8C TXA A2 09 LDX #9 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
48 PHA A9 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 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 | |
EA ... NOP × 2 48 PHA A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 68 PLA |
Clobbers Z&N, and C; and writes in stack |
EA ... NOP × 2 08 PHP A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 06 LDX #6 EA NOP CA DEX D0 FC BNE *-2 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 06 LDY #6 EA NOP 88 DEY D0 FC BNE *-2 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
08 PHP 48 PHA A9 E9 LDA #$E9 ;hides 'SBC #$2A' 2A ROL A ;first loop only B0 FC BCS *-2 68 PLA 28 PLP |
Writes in stack |
85 xx STA @zptemp A9 LDA #17 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 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 09 LDX #9 CA DEX 10 FD BPL *-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 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, Z&N, and C; requires @rts12; and writes in stack |
48 PHA A9 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 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 0A LDA #$0A ;hides 'ASL 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 18 CLC 10 FB BPL *-3 68 PLA |
Clobbers Z&N, and C; and writes in stack |
36 36 ROL $36,X 76 36 ROR $36,X A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 |
Clobbers A, Z&N, and C |
08 PHP A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC 10 FB BPL *-3 28 PLP |
Clobbers A; and writes in stack |
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 08 LDX #8 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
| 9 bytes | |
08 PHP A6 A6 LDX $A6 A2 08 LDX #8 CA DEX D0 FD BNE *-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 LDA #10 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #18 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
20 xx xx JSR @rts12 00 00... BRK 0 × 3 |
Requires dummy interrupt handler, and @rts12; and writes in stack |
EA NOP 68 PLA 8C TXA A2 08 LDX #8 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 10 bytes | |
EA ... NOP × 3 8C TXA A2 08 LDX #8 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
F6 F6 INC $F6,X 85 xx STA @zptemp A9 0A LDA #$0A ;hides 'ASL 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' 18 CLC 10 FC BPL *-2 68 PLA 28 PLP |
Clobbers S; and writes in stack |
85 xx STA @zptemp EA NOP 68 PLA A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 A5 xx LDA @zptemp |
Clobbers S, Z&N, and C; and requires @zptemp |
| 11 bytes | |
08 PHP C5 C5 CMP $C5 48 PHA A9 0A LDA #$0A ;hides 'ASL A' 18 CLC 10 FC BPL *-2 68 PLA 28 PLP |
Writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 08 LDX #8 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #25 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
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 0A LDA #$0A ;hides 'ASL 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 07 LDX #7 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
48 PHA A9 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 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 8C TXA A2 09 LDX #9 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
F6 F6 INC $F6,X 48 PHA A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-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' D0 FD BNE *-1 28 PLP |
Clobbers A, and S; and writes in stack |
| 9 bytes | |
48 PHA 8C TXA A2 08 LDX #8 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 08 LDX #8 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 08 LDX #8 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 2 08 PHP A0 08 LDY #8 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 09 LDX #9 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 LDA #26 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
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 09 LDX #9 CA DEX 10 FD BPL *-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 09 LDY #9 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA A9 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 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 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 68 PLA 28 PLP |
Writes in stack |
| 9 bytes | |
85 xx STA @zptemp A9 LDA #20 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
85 xx STA @zptemp 68 ... PLA × 2 A9 0A LDA #$0A ;hides 'ASL 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 86 xx STX @zptemp A2 08 LDX #8 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and writable $00-$FF |
| 12 bytes | |
EA ... NOP × 3 86 xx STX @zptemp A2 08 LDX #8 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #27 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 09 LDX #9 CA DEX 10 FD BPL *-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 × 2 18 CLC 10 FA BPL *-4 |
Clobbers A, Z&N, and C |
A6 A6 LDX $A6 A2 09 LDX #9 CA DEX 10 FD BPL *-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 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 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 | |
8C TXA A2 07 LDX #7 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
| 9 bytes | |
08 PHP BA TSX 68 PLA 9A TXS A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 08 LDY #8 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 LDA #13 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #21 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
EA NOP 00 00... BRK 0 × 4 |
Requires dummy interrupt handler; and writes in stack |
EA NOP 48 ... PHA × 3 A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 28 PLP |
Clobbers A, and S; and writes in stack |
48 ... PHA × 2 08 PHP A2 08 LDX #8 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
48 ... PHA × 2 08 PHP A0 08 LDY #8 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 10 bytes | |
48 PHA 8C TXA A2 06 LDX #6 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 06 LDX #6 EA NOP CA DEX D0 FC BNE *-2 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 3 08 PHP A2 08 LDX #8 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 3 08 PHP A0 08 LDY #8 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
EA NOP 86 xx STX @zptemp A2 09 LDX #9 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 07 LDX #7 CA DEX D0 FD BNE *-1 AA TAX 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 0A LDA #$0A ;hides 'ASL 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 |
48 ... PHA × 2 A0 88 LDY #136 ;hides 'DEY' 30 FD BMI *-1 |
Clobbers Y, S, and Z&N; and writes in stack |
A2 06 LDX #6 68 PLA CA DEX D0 FC BNE *-2 |
Clobbers A, X, S, and Z&N |
A0 06 LDY #6 68 PLA 88 DEY D0 FC BNE *-2 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 09 LDX #9 CA DEX 10 FD BPL *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 09 LDX #9 CA DEX 10 FD BPL *-1 |
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 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 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 09 LDY #9 88 DEY D0 FD BNE *-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 18 CLC 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 $04 |
Requires support for unofficial opcodes |
| 29 bytes | |
EA ... NOP × 26 4C xx xx JMP *+3 |
Not relocatable code |
56 cycles
| 5 bytes | |
|---|---|
A2 0B LDX #11 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 0B LDY #11 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #29 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
08 PHP A0 88 LDY #136 ;hides 'DEY' 30 FD BMI *-1 28 PLP |
Clobbers Y; and writes in stack |
| 7 bytes | |
E6 xx INC @zptemp A9 E9 LDA #$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 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 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 06 LDX #6 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 28 PLP |
Clobbers X; and writes in stack |
08 PHP 48 PHA A9 LDA #15 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #23 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 PHA 08 PHP 48 PHA A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 68 PLA 28 PLP |
Clobbers S; and writes in stack |
| 10 bytes | |
08 PHP C5 C5 CMP $C5 48 PHA A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 68 PLA 28 PLP |
Writes in stack |
86 xx STX @zptemp A2 07 LDX #7 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @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 LDA #30 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
18 CLC A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 |
Clobbers A, Z&N, and C |
A2 08 LDX #8 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 08 LDY #8 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
| 7 bytes | |
48 PHA A9 LDA #23 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #23 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
68 PLA 98 TYA A0 88 LDY #136 ;hides 'DEY' 30 FD BMI *-1 A8 TAY |
Clobbers A, S, and Z&N |
| 8 bytes | |
48 PHA A9 E9 LDA #$E9 ;hides 'SBC #$2A' 2A ROL A ;first loop only EA NOP B0 FB BCS *-3 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
EA NOP 8C TXA A2 09 LDX #9 CA DEX 10 FD BPL *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP A9 E9 LDA #$E9 ;hides 'SBC #$2A' 2A ROL A ;first loop only EA NOP B0 FB BCS *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 07 LDX #7 EA NOP CA DEX D0 FC BNE *-2 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 07 LDY #7 EA NOP 88 DEY D0 FC BNE *-2 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
48 PHA 8C TXA A2 09 LDX #9 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
86 xx STX @zptemp A2 09 LDX #9 CA DEX 10 FD BPL *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 | |
EA ... NOP × 2 08 PHP 48 PHA A9 0A LDA #$0A ;hides 'ASL 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 $04 |
Requires support for unofficial opcodes |
| 30 bytes | |
EA ... NOP × 27 4C xx xx JMP *+3 |
Not relocatable code |
58 cycles
| 5 bytes | |
|---|---|
A9 LDA #31 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
EA NOP A2 0B LDX #11 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 0B LDY #11 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
38 SEC A9 EB LDA #$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 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 |
Clobbers A, S, Z&N, and C; and writes in stack |
| 7 bytes | |
48 PHA A9 E9 LDA #$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 |
A5 A5 LDA $A5 A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 |
Clobbers A, Z&N, and C |
08 PHP A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only 30 FC BMI *-2 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 09 LDX #9 CA DEX 10 FD BPL *-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 8C TXA A2 09 LDX #9 CA DEX 10 FD BPL *-1 AA TAX |
Clobbers A, and Z&N |
20 xx xx JSR @rts12 48 PHA A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 68 PLA |
Clobbers Z&N, and C; requires @rts12; and writes in stack |
08 PHP 48 PHA A9 LDA #17 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #25 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 18 CLC 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 LDA #32 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 |
Clobbers A, S, Z&N, and C |
48 PHA A2 0B LDX #11 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 PHA A0 0B LDY #11 88 DEY D0 FD BNE *-1 |
Clobbers Y, 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 |
68 PLA A0 F8 LDY #248 ;hides 'SED' C8 INY D0 FC BNE *-2 |
Clobbers A, Y, S, Z&N, and D |
| 7 bytes | |
EA ... NOP × 2 A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 |
Clobbers A, Z&N, and C |
8C TXA A2 F8 LDX #248 ;hides 'SED' E8 INX D0 FC BNE *-2 AA TAX |
Clobbers A, Z&N, and D |
A6 A6 LDX $A6 A2 0B LDX #11 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A4 A4 LDY $A4 A0 0B LDY #11 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 28 PLP |
Clobbers A; requires dummy interrupt handler; and writes in stack |
68 PLA 8C TXA A2 09 LDX #9 CA DEX 10 FD BPL *-1 AA TAX |
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 |
EA ... NOP × 2 8C TXA A2 09 LDX #9 CA DEX 10 FD BPL *-1 AA TAX |
Clobbers A, and Z&N |
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 08 PHP A2 07 LDX #7 EA NOP CA DEX D0 FC BNE *-2 28 PLP |
Clobbers X; and writes in stack |
08 PHP 48 PHA A9 LDA #18 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #26 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
EA NOP 48 PHA 8C TXA A2 09 LDX #9 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 86 xx STX @zptemp A2 09 LDX #9 CA DEX 10 FD BPL *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP F6 F6 INC $F6,X 48 PHA A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 68 PLA 28 PLP |
Clobbers S; and writes in stack |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 08 LDX #8 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #33 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
68 PLA A2 0B LDX #11 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 0B LDY #11 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 0B LDX #11 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 0B LDY #11 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 09 LDX #9 CA DEX 10 FD BPL *-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 LDA #19 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #27 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
08 PHP 48 ... PHA × 2 A9 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 68 ... PLA × 2 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 LDA #34 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 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 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 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 |
Clobbers A, S, Z&N, and C |
| 8 bytes | |
8C TXA A2 08 LDX #8 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
08 PHP E6 xx INC @zptemp A0 88 LDY #136 ;hides 'DEY' 30 FD BMI *-1 28 PLP |
Clobbers Y; requires @zptemp; and writes in stack |
48 ... PHA × 2 A9 E9 LDA #$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 09 LDX #9 CA DEX 10 FD BPL *-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 × 2 18 CLC 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 × 2 18 CLC 10 FA BPL *-4 28 PLP |
Clobbers A; and writes in stack |
08 PHP A6 A6 LDX $A6 A2 09 LDX #9 CA DEX 10 FD BPL *-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 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 A5 xx LDA @zptemp |
Clobbers Z&N, and C; and requires @zptemp |
86 xx STX @zptemp A2 F8 LDX #248 ;hides 'SED' E8 INX D0 FC BNE *-2 A6 xx LDX @zptemp |
Clobbers Z&N, and D; and requires @zptemp |
08 PHP 48 PHA A9 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 8C TXA A2 07 LDX #7 EA NOP CA DEX D0 FC BNE *-2 AA TAX 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 86 xx STX @zptemp A2 09 LDX #9 CA DEX 10 FD BPL *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP EA NOP F6 F6 INC $F6,X 48 PHA A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' D0 FD BNE *-1 68 PLA 28 PLP |
Clobbers S; and writes in stack |
| 12 bytes | |
08 PHP 48 PHA 8C TXA A2 06 LDX #6 EA NOP CA DEX D0 FC BNE *-2 AA TAX 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 LDA #35 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 68 PLA |
Clobbers Z&N, and C; and writes in stack |
68 PLA 48 PHA A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 |
Clobbers A, Z&N, and C |
08 PHP A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 F8 LDX #248 ;hides 'SED' E8 INX D0 FC BNE *-2 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 F8 LDY #248 ;hides 'SED' C8 INY D0 FC BNE *-2 28 PLP |
Clobbers Y; and writes in stack |
68 PLA 48 PHA A2 F8 LDX #248 ;hides 'SED' E8 INX D0 FC BNE *-2 |
Clobbers A, X, Z&N, and D |
68 PLA 48 PHA A0 F8 LDY #248 ;hides 'SED' C8 INY D0 FC BNE *-2 |
Clobbers A, Y, Z&N, and D |
A2 0B LDX #11 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 0B LDY #11 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF |
EA NOP 68 PLA A2 0B LDX #11 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
EA NOP 68 PLA A0 0B LDY #11 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 8 bytes | |
EA NOP 8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 3 A2 0B LDX #11 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 3 A0 0B LDY #11 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 9 bytes | |
48 PHA 8C TXA A2 09 LDX #9 CA DEX 10 FD BPL *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
86 xx STX @zptemp A2 0B LDX #11 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 18 CLC 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 LDA #36 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' 85 xx STA @zptemp D0 FB BNE *-3 |
Clobbers A, Z&N, and C; and requires @zptemp |
A9 0A LDA #$0A ;hides 'ASL 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 0C LDA #12 E9 01 SBC #1 D0 FB BNE *-3 |
Clobbers A, Z&N, C, and V |
A9 0A LDA #$0A ;hides 'ASL A' 4C xx xx JMP *+3 D0 FA BNE *-4 |
Clobbers A, Z&N, and C; and not relocatable code |
08 PHP A2 0B LDX #11 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 0B LDY #11 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA A9 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 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 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 |
Clobbers A, S, Z&N, and C |
| 8 bytes | |
EA ... NOP × 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 |
68 PLA 8C TXA A2 F8 LDX #248 ;hides 'SED' E8 INX D0 FC BNE *-2 AA TAX |
Clobbers A, S, Z&N, and D |
48 PHA 8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N; and writes in stack |
| 9 bytes | |
A5 A5 LDA $A5 8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
E6 xx INC @zptemp 48 PHA A9 E9 LDA #$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 LDA #22 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #30 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 A5 A5 LDA $A5 98 TYA A0 88 LDY #136 ;hides 'DEY' 30 FD BMI *-1 A8 TAY 28 PLP |
Clobbers A; and writes in stack |
86 xx STX @zptemp A2 08 LDX #8 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @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 $04 |
Requires support for unofficial opcodes |
| 33 bytes | |
EA ... NOP × 30 4C xx xx JMP *+3 |
Not relocatable code |
64 cycles
| 5 bytes | |
|---|---|
A9 LDA #37 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 09 LDX #9 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 09 LDY #9 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
| 7 bytes | |
A9 E9 LDA #$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 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 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 18 CLC 10 FA BPL *-4 |
Clobbers A, S, Z&N, and C; and writes in stack |
| 8 bytes | |
48 PHA 18 CLC A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 68 PLA |
Clobbers Z&N, and C; and writes in stack |
A9 0A LDA #$0A ;hides 'ASL A' EA ... NOP × 3 18 CLC 10 F9 BPL *-5 |
Clobbers A, Z&N, and C |
08 PHP 18 CLC A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 08 LDX #8 EA NOP CA DEX D0 FC BNE *-2 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 08 LDY #8 EA NOP 88 DEY D0 FC BNE *-2 28 PLP |
Clobbers Y; and writes in stack |
68 PLA 8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #23 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #31 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
08 PHP 48 PHA A9 E9 LDA #$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 86 xx STX @zptemp A2 0B LDX #11 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #38 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
18 CLC A9 0A LDA #$0A ;hides 'ASL A' 48 PHA D0 FC BNE *-2 |
Clobbers A, S, Z&N, and C; and writes in stack |
A2 08 LDX #8 48 PHA CA DEX D0 FC BNE *-2 |
Clobbers X, S, and Z&N; and writes in stack |
A0 08 LDY #8 48 PHA 88 DEY D0 FC BNE *-2 |
Clobbers Y, S, and Z&N; and writes in stack |
68 PLA A2 0C LDX #12 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 0C LDY #12 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 0C LDX #12 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 0C LDX #12 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 0C LDY #12 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 LDA #31 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #31 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
| 8 bytes | |
EA NOP 08 PHP A2 0B LDX #11 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 0B LDY #11 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA 38 SEC A9 EB LDA #$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 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 68 PLA |
Clobbers S, Z&N, and C; and writes in stack |
48 PHA 08 PHP A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 28 PLP |
Clobbers A, and S; and writes in stack |
| 9 bytes | |
08 PHP 48 PHA A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only 30 FC BMI *-2 68 PLA 28 PLP |
Writes in stack |
85 xx STA @zptemp A9 LDA #32 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
85 xx STA @zptemp 68 PLA A9 0A LDA #$0A ;hides 'ASL 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 0B LDX #11 CA DEX D0 FD BNE *-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 0D LDX #13 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 0D LDY #13 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #39 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
48 PHA A9 0A LDA #$0A ;hides 'ASL A' 48 PHA D0 FC BNE *-2 |
Clobbers A, S, Z&N, and C; and writes in stack |
| 7 bytes | |
48 PHA A9 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 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 |
38 SEC A9 09 LDA #9 EA NOP E9 01 SBC #1 D0 FA BNE *-4 |
Clobbers A, Z&N, C, and V |
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 |
A5 A5 LDA $A5 A9 0A LDA #$0A ;hides 'ASL A' 85 xx STA @zptemp D0 FB BNE *-3 |
Clobbers A, Z&N, and C; and requires @zptemp |
04 04 NOP $04 A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 |
Clobbers A, S, Z&N, and C |
48 PHA 08 PHP A2 0B LDX #11 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
48 PHA 08 PHP A0 0B LDY #11 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 9 bytes | |
48 PHA 8C TXA A2 F8 LDX #248 ;hides 'SED' E8 INX D0 FC BNE *-2 AA TAX 68 PLA |
Clobbers Z&N, and D; and writes in stack |
EA ... NOP × 2 68 PLA 48 PHA A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 |
Clobbers A, Z&N, and C |
68 PLA 48 PHA 8C TXA A2 F8 LDX #248 ;hides 'SED' E8 INX D0 FC BNE *-2 AA TAX |
Clobbers A, Z&N, and D |
08 PHP A6 A6 LDX $A6 A2 0B LDX #11 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A4 A4 LDY $A4 A0 0B LDY #11 88 DEY D0 FD BNE *-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 |
08 PHP 48 PHA A9 LDA #25 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #33 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
EA NOP 68 PLA 8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 10 bytes | |
EA ... NOP × 3 8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX |
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 0A LDA #$0A ;hides 'ASL 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 86 xx STX @zptemp A2 0B LDX #11 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #40 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
68 PLA A9 0A LDA #$0A ;hides 'ASL A' 48 PHA D0 FC BNE *-2 |
Clobbers A, S, Z&N, and C; and writes in stack |
| 7 bytes | |
BA TSX A9 0A LDA #$0A ;hides 'ASL 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 06 LDY #6 F6 F6 INC $F6,X 88 DEY D0 FB BNE *-3 |
Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF |
48 PHA A9 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 LDA #33 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
A2 06 LDX #6 48 ... PHA × 2 CA DEX D0 FB BNE *-3 |
Clobbers X, S, and Z&N; and writes in stack |
A0 06 LDY #6 48 ... PHA × 2 88 DEY D0 FB BNE *-3 |
Clobbers Y, S, and Z&N; and writes in stack |
A2 06 LDX #6 EA NOP 68 PLA CA DEX D0 FB BNE *-3 |
Clobbers A, X, S, and Z&N |
A0 06 LDY #6 EA NOP 68 PLA 88 DEY D0 FB BNE *-3 |
Clobbers A, Y, S, and Z&N |
68 PLA A9 0A LDA #$0A ;hides 'ASL A' 85 xx STA @zptemp D0 FB BNE *-3 |
Clobbers A, S, Z&N, and C; and requires @zptemp |
68 PLA A9 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 0C LDX #12 CA DEX D0 FD BNE *-1 AA TAX |
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 09 LDY #9 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
| 9 bytes | |
48 PHA 8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 0B LDX #11 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 2 08 PHP A0 0B LDY #11 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 0C LDX #12 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 LDA #41 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
EA NOP A2 0D LDX #13 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 0D LDY #13 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 7 bytes | |
38 SEC A9 0D LDA #13 E9 01 SBC #1 D0 FB BNE *-3 |
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 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 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' 48 PHA D0 FC BNE *-2 |
Clobbers A, S, Z&N, and C; and writes in stack |
| 8 bytes | |
8C TXA A2 09 LDX #9 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
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 #$0A ;hides 'ASL A' 08 PHP 28 PLP 10 FB BPL *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP 48 PHA A9 LDA #27 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #35 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 8C TXA A2 08 LDX #8 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
48 PHA 08 PHP 48 PHA A9 E9 LDA #$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 × 2 18 CLC 10 FA BPL *-4 68 PLA 28 PLP |
Writes in stack |
85 xx STA @zptemp 68 PLA 48 PHA A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 A5 xx LDA @zptemp |
Clobbers Z&N, and C; and requires @zptemp |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 0B LDX #11 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and writable $00-$FF |
| 12 bytes | |
E6 xx INC @zptemp 86 xx STX @zptemp A2 08 LDX #8 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @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 | |
|---|---|
A0 88 LDY #136 ;hides 'DEY' EA NOP 30 FC BMI *-2 |
Clobbers Y, and Z&N |
A2 0A LDX #10 ;hides 'ASL A' CA DEX D0 FC BNE *-2 |
Clobbers A, X, Z&N, and C |
A9 LDA #42 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
48 PHA A2 0D LDX #13 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
| 7 bytes | |
A9 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP 18 CLC 10 FA BPL *-4 |
Clobbers A, Z&N, and C; and writes in stack |
A6 A6 LDX $A6 A2 0D LDX #13 CA DEX D0 FD BNE *-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 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 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 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 0C LDX #12 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
08 PHP 48 PHA A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 68 PLA 28 PLP |
Writes in stack |
EA ... NOP × 2 8C TXA A2 0C LDX #12 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
85 xx STA @zptemp A9 LDA #36 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
EA NOP 86 xx STX @zptemp A2 0C LDX #12 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #43 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
68 PLA A2 0D LDX #13 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 0D LDY #13 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 0D LDX #13 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 0D LDX #13 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 0D LDY #13 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' 85 xx STA @zptemp D0 FB BNE *-3 28 PLP |
Clobbers A; requires @zptemp; and writes in stack |
48 PHA A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 0C LDA #12 E9 01 SBC #1 D0 FB BNE *-3 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
48 PHA A9 0A LDA #$0A ;hides 'ASL 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 0C LDA #12 E9 01 SBC #1 D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP 48 PHA A9 LDA #29 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #37 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
EA ... NOP × 2 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 |
86 xx STX @zptemp A2 09 LDX #9 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
48 ... PHA × 2 8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
| 11 bytes | |
48 PHA A5 A5 LDA $A5 8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP E6 xx INC @zptemp 48 PHA A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only 30 FC BMI *-2 68 PLA 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 0E LDX #14 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 0E LDY #14 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #44 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 |
Clobbers A, Z&N, and C |
| 7 bytes | |
48 PHA A9 LDA #37 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #37 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
| 8 bytes | |
08 PHP A2 09 LDX #9 EA NOP CA DEX D0 FC BNE *-2 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 09 LDY #9 EA NOP 88 DEY D0 FC BNE *-2 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
48 PHA A9 E9 LDA #$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 LDA #30 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #38 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
EA NOP 68 PLA 8C TXA A2 0C LDX #12 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 10 bytes | |
08 PHP 48 PHA 18 CLC A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 68 PLA 28 PLP |
Writes in stack |
A5 A5 LDA $A5 8C TXA A2 09 LDX #9 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
| 11 bytes | |
EA ... NOP × 2 86 xx STX @zptemp A2 0C LDX #12 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #45 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
48 PHA A0 88 LDY #136 ;hides 'DEY' EA NOP 30 FC BMI *-2 |
Clobbers Y, S, and Z&N; and writes in stack |
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 |
| 7 bytes | |
A4 A4 LDY $A4 A0 88 LDY #136 ;hides 'DEY' EA NOP 30 FC BMI *-2 |
Clobbers Y, and Z&N |
A6 A6 LDX $A6 A2 0A LDX #10 ;hides 'ASL A' CA DEX D0 FC BNE *-2 |
Clobbers A, X, Z&N, and C |
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 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 LDA #38 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 0D LDX #13 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
EA NOP 68 PLA A2 0D LDX #13 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
| 8 bytes | |
EA NOP 8C TXA A2 0D LDX #13 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 3 A2 0D LDX #13 CA DEX D0 FD BNE *-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 8C TXA A2 0C LDX #12 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 0C LDX #12 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 08 LDX #8 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 08 LDY #8 C5 C5 CMP $C5 88 DEY D0 FB BNE *-3 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 0D LDX #13 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 LDA #31 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
| 10 bytes | |
08 PHP 48 PHA 38 SEC A9 EB LDA #$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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 LDA #46 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
EA NOP A2 0E LDX #14 CA DEX D0 FD BNE *-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 0D LDX #13 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 0D LDY #13 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA A9 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 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 LDA #32 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #40 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 ... PHA × 2 A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 86 xx STX @zptemp A2 0C LDX #12 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and writable $00-$FF |
85 xx STA @zptemp 68 PLA A9 0A LDA #$0A ;hides 'ASL 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 LDA #47 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
48 PHA A2 0E LDX #14 CA DEX D0 FD BNE *-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 0E LDX #14 CA DEX D0 FD BNE *-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 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 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 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 |
Clobbers A, S, Z&N, and C; and writes in stack |
| 8 bytes | |
A5 A5 LDA $A5 A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 |
Clobbers A, Z&N, and C |
68 PLA 8C TXA A2 0D LDX #13 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 0D LDX #13 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP BA TSX A9 0A LDA #$0A ;hides 'ASL 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 06 LDY #6 F6 F6 INC $F6,X 88 DEY D0 FB BNE *-3 28 PLP |
Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack |
08 PHP 48 PHA A9 LDA #33 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #41 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 09 LDY #9 EA NOP 88 DEY D0 FC BNE *-2 28 PLP |
Clobbers Y, and S; and writes in stack |
| 10 bytes | |
EA NOP 48 PHA 8C TXA A2 0C LDX #12 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 08 PHP 8C TXA A2 0C LDX #12 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA NOP 08 PHP A2 08 LDX #8 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 08 LDY #8 C5 C5 CMP $C5 88 DEY D0 FB BNE *-3 28 PLP |
Clobbers Y; and writes in stack |
EA NOP 86 xx STX @zptemp A2 0D LDX #13 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 0B LDX #11 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #48 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
68 PLA A2 0E LDX #14 CA DEX D0 FD BNE *-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 | |
8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 0E LDX #14 CA DEX D0 FD BNE *-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 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 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 0D LDX #13 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 0D LDY #13 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
48 PHA 38 SEC A9 0D LDA #13 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 0D LDA #13 E9 01 SBC #1 D0 FB BNE *-3 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 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 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 09 LDX #9 EA NOP CA DEX D0 FC BNE *-2 AA TAX 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 $04 |
Requires support for unofficial opcodes |
| 39 bytes | |
EA ... NOP × 36 4C xx xx JMP *+3 |
Not relocatable code |
76 cycles
| 5 bytes | |
|---|---|
A2 0F LDX #15 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 0F LDY #15 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #49 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
A9 E9 LDA #$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 A0 88 LDY #136 ;hides 'DEY' EA NOP 30 FC BMI *-2 28 PLP |
Clobbers Y; and writes in stack |
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 |
48 PHA A9 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 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC 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 0A LDA #$0A ;hides 'ASL 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 0D LDX #13 CA DEX D0 FD BNE *-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 18 CLC 10 FA BPL *-4 68 PLA |
Clobbers Z&N, and C; 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 A9 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP 18 CLC 10 FA BPL *-4 28 PLP |
Clobbers A; and writes in stack |
08 PHP A6 A6 LDX $A6 A2 0D LDX #13 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP 48 PHA A9 LDA #35 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #43 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 11 bytes | |
08 PHP 48 PHA 08 PHP A9 0A LDA #$0A ;hides 'ASL A' 18 CLC D0 FC BNE *-2 28 PLP 68 PLA 28 PLP |
Writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 0D LDX #13 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #50 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 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 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 0E LDX #14 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
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 A2 0E LDX #14 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
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 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 3 A2 0E LDX #14 CA DEX D0 FD BNE *-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 8C TXA A2 0D LDX #13 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 0D LDX #13 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 0D LDX #13 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 2 08 PHP A0 0D LDY #13 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 0E LDX #14 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 0A LDA #$0A ;hides 'ASL A' 85 xx STA @zptemp D0 FB BNE *-3 68 PLA 28 PLP |
Requires @zptemp; and writes in stack |
08 PHP 48 PHA A9 0A LDA #$0A ;hides 'ASL 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 0C LDA #12 E9 01 SBC #1 D0 FB BNE *-3 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 $04 |
Requires support for unofficial opcodes |
| 40 bytes | |
EA ... NOP × 37 4C xx xx JMP *+3 |
Not relocatable code |
78 cycles
| 5 bytes | |
|---|---|
A9 LDA #51 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 0B LDX #11 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 0B LDY #11 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
18 CLC A9 E9 LDA #$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 0F LDA #15 E9 01 SBC #1 D0 FB BNE *-3 |
Clobbers A, Z&N, C, and V |
08 PHP A2 0E LDX #14 CA DEX D0 FD BNE *-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 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 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 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 68 PLA |
Clobbers Z&N, and C; and writes in stack |
68 PLA 48 PHA A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 |
Clobbers A, Z&N, and C |
08 PHP A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
| 9 bytes | |
A5 A5 LDA $A5 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #37 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #45 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 84 xx STY @zptemp A0 88 LDY #136 ;hides 'DEY' EA NOP 30 FC BMI *-2 A4 xx LDY @zptemp |
Clobbers S, and Z&N; requires @zptemp; and writes in stack |
| 11 bytes | |
08 PHP 48 PHA A9 E9 LDA #$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 LDA #52 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
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' C5 C5 CMP $C5 30 FB BMI *-3 |
Clobbers Y, Z&N, and C |
A0 88 LDY #136 ;hides 'DEY' 24 24 BIT $24 30 FB BMI *-3 |
Clobbers Y, Z&N, and V |
A0 88 LDY #136 ;hides 'DEY' A5 A5 LDA $A5 30 FB BMI *-3 |
Clobbers A, Y, and Z&N |
A0 88 LDY #136 ;hides 'DEY' A6 A6 LDX $A6 30 FB BMI *-3 |
Clobbers X, Y, and Z&N |
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 0A LDA #$0A ;hides 'ASL A' 48 PHA 18 CLC D0 FB BNE *-3 |
Clobbers A, S, Z&N, and C; and writes in stack |
48 PHA A2 0F LDX #15 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
| 7 bytes | |
A9 0A LDA #$0A ;hides 'ASL A' B8 CLV 50 00 BVC *+2 D0 FA BNE *-4 |
Clobbers A, Z&N, C, and V |
A6 A6 LDX $A6 A2 0F LDX #15 CA DEX D0 FD BNE *-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 0A LDA #$0A ;hides 'ASL A' 85 xx STA @zptemp 18 CLC D0 FA BNE *-4 |
Clobbers A, Z&N, and C; and requires @zptemp |
48 PHA A9 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 LDA #45 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' 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 08 PHP 28 PLP 18 CLC 10 F9 BPL *-5 |
Clobbers A, Z&N, and C; and writes in stack |
A9 0A LDA #$0A ;hides 'ASL A' 4C xx xx JMP *+3 18 CLC D0 F9 BNE *-5 |
Clobbers A, Z&N, and C; and not relocatable code |
68 PLA 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
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 |
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 |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
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 A6 A6 LDX $A6 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 A2 0D LDX #13 CA DEX D0 FD BNE *-1 F6 xx INC @zptemp,X 28 PLP |
Clobbers X; requires @zptemp; and writes in stack |
08 PHP 48 PHA A9 LDA #38 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #46 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 ... PHA × 2 08 PHP A2 0D LDX #13 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
| 10 bytes | |
EA NOP 48 PHA 8C TXA A2 0D LDX #13 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 08 PHP 8C TXA A2 0D LDX #13 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 3 08 PHP A2 0D LDX #13 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 86 xx STX @zptemp A2 0E LDX #14 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 0C LDX #12 CA DEX D0 FD BNE *-1 AA TAX 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 $04 |
Requires support for unofficial opcodes |
| 41 bytes | |
EA ... NOP × 38 4C xx xx JMP *+3 |
Not relocatable code |
80 cycles
| 5 bytes | |
|---|---|
A9 LDA #53 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 88 LDX #136 ;hides 'DEY' EA NOP CA DEX 30 FB BMI *-3 |
Clobbers X, Y, and Z&N |
68 PLA A9 E9 LDA #$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 0F LDX #15 CA DEX D0 FD BNE *-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 | |
8C TXA A2 0F LDX #15 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 0F LDX #15 CA DEX D0 FD BNE *-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 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 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 0E LDX #14 CA DEX D0 FD BNE *-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 LDA #39 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #47 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 11 bytes | |
86 xx STX @zptemp A6 A6 LDX $A6 A2 0E LDX #14 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
48 PHA 08 PHP 48 PHA A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 FA BNE *-4 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 $36,X× 9 |
Clobbers Z&N |
| 40 bytes | |
EA ... NOP × 40 |
No requirements |
81 cycles
| 5 bytes | |
|---|---|
A2 10 LDX #16 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 10 LDY #16 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #54 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A9 E9 LDA #$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 #$18' 18 CLC ;first loop only E6 xx INC @zptemp 90 FA BCC *-4 |
Clobbers A, Z&N, C, and V; and requires @zptemp |
48 PHA A9 LDA #47 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #47 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
A9 E9 LDA #$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 0A LDA #$0A ;hides 'ASL A' 48 PHA 18 CLC D0 FB BNE *-3 |
Clobbers A, S, Z&N, and C; and writes in stack |
| 8 bytes | |
18 CLC 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 0E LDX #14 CA DEX D0 FD BNE *-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 08 PHP 28 PLP 18 CLC 10 F9 BPL *-5 |
Clobbers A, Z&N, and C; and writes in stack |
18 CLC A9 0A LDA #$0A ;hides 'ASL 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 0E LDX #14 CA DEX D0 FD BNE *-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 LDA #40 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #48 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 ... PHA × 2 A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 68 PLA |
Clobbers S, Z&N, and C; and writes in stack |
EA NOP 68 PLA 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
48 PHA 08 PHP A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 28 PLP |
Clobbers A, and S; and writes in stack |
| 10 bytes | |
C5 C5 CMP $C5 48 PHA A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 68 PLA |
Clobbers Z&N, and C; and writes in stack |
EA ... NOP × 3 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP A5 A5 LDA $A5 A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
| 11 bytes | |
EA ... NOP × 2 48 PHA 8C TXA A2 0D LDX #13 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 0E LDX #14 CA DEX D0 FD BNE *-1 A6 xx LDX @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 8C TXA A2 0C LDX #12 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #55 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
48 PHA A0 88 LDY #136 ;hides 'DEY' 48 PHA 30 FC BMI *-2 |
Clobbers Y, S, and Z&N; and writes in stack |
A2 09 LDX #9 68 PLA CA DEX D0 FC BNE *-2 |
Clobbers A, X, S, and Z&N |
A0 09 LDY #9 68 PLA 88 DEY D0 FC BNE *-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 09 LDY #9 EA ... NOP × 2 88 DEY D0 FB BNE *-3 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 0A LDA #$0A ;hides 'ASL A' 48 PHA 18 CLC D0 FB BNE *-3 |
Clobbers A, S, Z&N, and C; and writes in stack |
| 8 bytes | |
8C TXA A2 0B LDX #11 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
| 9 bytes | |
48 PHA 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 0E LDX #14 CA DEX D0 FD BNE *-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 |
86 xx STX @zptemp A2 0F LDX #15 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 0D LDA #13 E9 01 SBC #1 D0 FB BNE *-3 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 LDA #56 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
18 CLC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-2 |
Clobbers A, Z&N, C, V, and D |
EA NOP A2 10 LDX #16 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 10 LDY #16 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 7 bytes | |
38 SEC A9 10 LDA #16 E9 01 SBC #1 D0 FB BNE *-3 |
Clobbers A, Z&N, C, and V |
08 PHP A2 0F LDX #15 CA DEX D0 FD BNE *-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 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 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' C5 C5 CMP $C5 30 FB BMI *-3 A8 TAY |
Clobbers A, Z&N, and C |
98 TYA A0 88 LDY #136 ;hides 'DEY' 24 24 BIT $24 30 FB BMI *-3 A8 TAY |
Clobbers A, Z&N, and V |
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 8C TXA A2 0F LDX #15 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #42 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #50 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 68 PLA |
Clobbers Z&N, and C; requires @zptemp; and writes in stack |
08 PHP E6 xx INC @zptemp A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC 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 0A LDA #$0A ;hides 'ASL 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 18 CLC 10 FA BPL *-4 68 PLA 28 PLP |
Writes in stack |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 0E LDX #14 CA DEX D0 FD BNE *-1 A6 xx LDX @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 86 xx STX @zptemp A2 0E LDX #14 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #57 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
48 PHA A2 10 LDX #16 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 PHA A0 10 LDY #16 88 DEY D0 FD BNE *-1 |
Clobbers Y, S, and Z&N; and writes in stack |
| 7 bytes | |
A6 A6 LDX $A6 A2 10 LDX #16 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A4 A4 LDY $A4 A0 10 LDY #16 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 0A LDA #$0A ;hides 'ASL A' 20 xx xx JSR @rts12 10 FA BPL *-4 |
Clobbers A, Z&N, and C; requires @rts12; and writes in stack |
48 PHA A9 LDA #50 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #50 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
68 ... PLA × 2 A9 E9 LDA #$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 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 |
Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack |
68 PLA 8C TXA A2 0F LDX #15 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 0F LDX #15 CA DEX D0 FD BNE *-1 AA TAX |
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 LDA #43 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #51 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 0E LDX #14 CA DEX D0 FD BNE *-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 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 08 PHP 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 3 08 PHP A2 0E LDX #14 CA DEX D0 FD BNE *-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 |
86 xx STX @zptemp A2 0B LDX #11 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 0D LDX #13 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #58 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 | |
8C TXA A2 10 LDX #16 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
48 PHA A9 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 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 0B LDX #11 EA NOP CA DEX D0 FC BNE *-2 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 0B LDY #11 EA NOP 88 DEY D0 FC BNE *-2 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
48 PHA 38 SEC A9 0F LDA #15 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 0F LDA #15 E9 01 SBC #1 D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP 48 PHA A9 LDA #44 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #52 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 68 PLA 28 PLP |
Writes in stack |
84 xx STY @zptemp A0 88 LDY #136 ;hides 'DEY' C5 C5 CMP $C5 30 FB BMI *-3 A4 xx LDY @zptemp |
Clobbers Z&N, and C; and requires @zptemp |
84 xx STY @zptemp A0 88 LDY #136 ;hides 'DEY' 24 24 BIT $24 30 FB BMI *-3 A4 xx LDY @zptemp |
Clobbers Z&N, and V; and requires @zptemp |
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 0F LDX #15 CA DEX D0 FD BNE *-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 11 LDY #17 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #59 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
48 PHA A9 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 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 18 CLC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-2 |
Clobbers A, S, Z&N, C, V, and D; and writes in stack |
| 8 bytes | |
A5 A5 LDA $A5 18 CLC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-2 |
Clobbers A, Z&N, C, V, and D |
08 PHP A0 88 LDY #136 ;hides 'DEY' C5 C5 CMP $C5 30 FB BMI *-3 28 PLP |
Clobbers Y; 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 |
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 0F LDX #15 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
| 9 bytes | |
48 PHA 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 |
8C TXA A2 09 LDX #9 EA ... NOP × 2 CA DEX D0 FB BNE *-3 AA TAX |
Clobbers A, and Z&N |
08 PHP 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 |
08 PHP A6 A6 LDX $A6 A2 0F LDX #15 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
48 PHA A9 0A LDA #$0A ;hides 'ASL 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 LDA #45 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #53 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 PHA A9 0A LDA #$0A ;hides 'ASL 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 08 PHP 28 PLP 18 CLC 10 F9 BPL *-5 68 PLA |
Clobbers Z&N, and C; and writes in stack |
| 11 bytes | |
EA ... NOP × 2 48 PHA 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 0F LDX #15 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 12 bytes | |
EA NOP 08 PHP 48 PHA 8C TXA A2 0D LDX #13 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #60 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
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 |
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 0A LDA #$0A ;hides 'ASL A' EA ... NOP × 2 18 CLC 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 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 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 8C TXA A2 10 LDX #16 CA DEX D0 FD BNE *-1 AA TAX |
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 8C TXA A2 0F LDX #15 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 0F LDX #15 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 0F LDX #15 CA DEX D0 FD BNE *-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 |
86 xx STX @zptemp A2 10 LDX #16 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 LDA #61 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
38 SEC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-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 11 LDY #17 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 7 bytes | |
38 SEC A9 11 LDA #17 E9 01 SBC #1 D0 FB BNE *-3 |
Clobbers A, Z&N, C, and V |
08 PHP A2 10 LDX #16 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 10 LDY #16 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA A9 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 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 8C TXA A2 10 LDX #16 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N; and writes in stack |
| 9 bytes | |
A5 A5 LDA $A5 8C TXA A2 10 LDX #16 CA DEX D0 FD BNE *-1 AA TAX |
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 #$18' 18 CLC ;first loop only E6 xx INC @zptemp 90 FA BCC *-4 28 PLP |
Clobbers A; requires @zptemp; and writes in stack |
08 PHP 48 PHA A9 LDA #47 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #55 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 PHA A9 E9 LDA #$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 18 CLC 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 18 CLC 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 08 PHP 28 PLP 18 CLC 10 F9 BPL *-5 68 PLA |
Clobbers Z&N, and C; and writes in stack |
86 xx STX @zptemp A2 09 LDX #9 EA ... NOP × 2 CA DEX D0 FB BNE *-3 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
48 PHA 08 PHP 48 PHA A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 68 PLA 28 PLP |
Clobbers S; and writes in stack |
| 12 bytes | |
08 PHP C5 C5 CMP $C5 48 PHA A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC 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 LDA #62 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
A0 88 LDY #136 ;hides 'DEY' 68 PLA 30 FC BMI *-2 |
Clobbers A, Y, S, and Z&N |
| 6 bytes | |
A0 88 LDY #136 ;hides 'DEY' EA ... NOP × 2 30 FB BMI *-3 |
Clobbers Y, and Z&N |
A2 0A LDX #10 ;hides 'ASL A' EA NOP CA DEX D0 FB BNE *-3 |
Clobbers A, X, Z&N, and C |
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 0B LDX #11 48 PHA CA DEX D0 FC BNE *-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 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 LDA #55 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' 48 ... PHA × 2 D0 FB BNE *-3 |
Clobbers A, S, Z&N, and C; and writes in stack |
| 8 bytes | |
8C TXA A2 0C LDX #12 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
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 09 LDY #9 EA ... NOP × 2 88 DEY D0 FB BNE *-3 28 PLP |
Clobbers Y; and writes in stack |
08 PHP 48 PHA A9 LDA #48 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #56 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 8C TXA A2 0B LDX #11 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 0B LDX #11 EA NOP CA DEX D0 FC BNE *-2 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA NOP 86 xx STX @zptemp A2 10 LDX #16 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #63 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
68 PLA A2 11 LDX #17 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 11 LDY #17 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 11 LDX #17 CA DEX D0 FD BNE *-1 AA TAX |
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 11 LDY #17 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 18 CLC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-2 68 PLA |
Clobbers Z&N, C, V, and D; and writes in stack |
08 PHP 18 CLC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-2 28 PLP |
Clobbers A; and writes in stack |
EA NOP 08 PHP A2 10 LDX #16 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 10 LDY #16 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
48 PHA 38 SEC A9 10 LDA #16 E9 01 SBC #1 D0 FB BNE *-3 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
08 PHP 48 PHA A9 LDA #49 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #57 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 98 TYA A0 88 LDY #136 ;hides 'DEY' C5 C5 CMP $C5 30 FB BMI *-3 A8 TAY 68 PLA |
Clobbers Z&N, and C; and writes in stack |
48 PHA 98 TYA A0 88 LDY #136 ;hides 'DEY' 24 24 BIT $24 30 FB BMI *-3 A8 TAY 68 PLA |
Clobbers Z&N, and V; and writes in stack |
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 8C TXA A2 0F LDX #15 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
| 11 bytes | |
48 PHA A5 A5 LDA $A5 8C TXA A2 0F LDX #15 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
86 xx STX @zptemp A6 A6 LDX $A6 A2 10 LDX #16 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 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 E6 xx INC @zptemp 48 PHA A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC 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 $36,X× 9 |
Clobbers Z&N |
| 45 bytes | |
EA ... NOP × 45 |
No requirements |
91 cycles
| 5 bytes | |
|---|---|
A2 12 LDX #18 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 12 LDY #18 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #64 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
A9 E9 LDA #$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 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 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 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 | |
68 PLA A9 0A LDA #$0A ;hides 'ASL A' EA ... NOP × 2 18 CLC D0 FA BNE *-4 |
Clobbers A, S, Z&N, and C |
48 PHA 08 PHP A2 10 LDX #16 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
48 PHA 08 PHP A0 10 LDY #16 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 9 bytes | |
EA NOP 8C TXA A2 0C LDX #12 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
08 PHP A6 A6 LDX $A6 A2 10 LDX #16 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A4 A4 LDY $A4 A0 10 LDY #16 88 DEY D0 FD BNE *-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 LDA #50 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #58 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
86 xx STX @zptemp A2 0C LDX #12 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @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 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC 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 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 28 PLP |
Clobbers A; requires dummy interrupt handler; and writes in stack |
48 ... PHA × 2 A9 E9 LDA #$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 8C TXA A2 0F LDX #15 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 38 SEC A9 09 LDA #9 EA ... NOP × 2 E9 01 SBC #1 D0 F9 BNE *-5 28 PLP |
Clobbers A; and writes in stack |
| 12 bytes | |
EA NOP 08 PHP 48 PHA 8C TXA A2 0E LDX #14 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #65 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 0D LDX #13 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 0D LDY #13 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
| 7 bytes | |
48 PHA A9 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 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 10 FC BPL *-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 8C TXA A2 11 LDX #17 CA DEX D0 FD BNE *-1 AA TAX |
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 8C TXA A2 10 LDX #16 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 10 LDX #16 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
86 xx STX @zptemp A2 11 LDX #17 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 0F LDA #15 E9 01 SBC #1 D0 FB BNE *-3 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 LDA #66 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
EA NOP A2 12 LDX #18 CA DEX D0 FD BNE *-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 FB BNE *-3 |
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 11 LDY #17 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA A9 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 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 LDA #52 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #60 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 ... PHA × 2 18 CLC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-2 68 PLA |
Clobbers S, Z&N, C, V, and D; and writes in stack |
48 PHA 08 PHP 18 CLC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-2 28 PLP |
Clobbers A, and S; and writes in stack |
| 10 bytes | |
24 24 BIT $24 48 PHA 18 CLC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-2 68 PLA |
Clobbers Z&N, C, V, and D; and writes in stack |
08 PHP A5 A5 LDA $A5 18 CLC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-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 10 LDA #16 E9 01 SBC #1 D0 FB BNE *-3 68 PLA |
Clobbers S, Z&N, C, and V; and writes in stack |
85 xx STA @zptemp A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' B8 CLV 50 00 BVC *+2 D0 FA BNE *-4 68 PLA 28 PLP |
Writes in stack |
EA NOP 86 xx STX @zptemp A2 0C LDX #12 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @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 LDA #67 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
48 PHA A2 12 LDX #18 CA DEX D0 FD BNE *-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 12 LDX #18 CA DEX D0 FD BNE *-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 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 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 | |
38 SEC A9 0D LDA #13 EA NOP E9 01 SBC #1 D0 FA BNE *-4 |
Clobbers A, Z&N, C, and V |
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 |
68 PLA 8C TXA A2 11 LDX #17 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
48 PHA A9 0A LDA #$0A ;hides 'ASL A' EA ... NOP × 2 18 CLC D0 FA BNE *-4 68 PLA |
Clobbers Z&N, and C; and writes in stack |
EA ... NOP × 2 8C TXA A2 11 LDX #17 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP A9 0A LDA #$0A ;hides 'ASL A' EA ... NOP × 2 18 CLC D0 FA BNE *-4 28 PLP |
Clobbers A; and writes in stack |
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 LDA #53 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #61 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
EA NOP 48 PHA 8C TXA A2 10 LDX #16 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 86 xx STX @zptemp A2 11 LDX #17 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 0F LDX #15 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #68 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
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 |
68 PLA A2 12 LDX #18 CA DEX D0 FD BNE *-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 | |
8C TXA A2 12 LDX #18 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 12 LDX #18 CA DEX D0 FD BNE *-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 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 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 10 FC BPL *-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 10 FC BPL *-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 11 LDY #17 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
48 PHA 38 SEC A9 11 LDA #17 E9 01 SBC #1 D0 FB BNE *-3 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
08 PHP 48 PHA A9 LDA #54 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #62 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 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 8C TXA A2 10 LDX #16 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
| 11 bytes | |
48 PHA A5 A5 LDA $A5 8C TXA A2 10 LDX #16 CA DEX D0 FD BNE *-1 AA TAX 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 18 CLC 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 13 LDX #19 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 13 LDY #19 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #69 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
48 PHA A9 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 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 | |
8C TXA A2 0D LDX #13 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
08 PHP A0 88 LDY #136 ;hides 'DEY' EA ... NOP × 2 30 FB BMI *-3 28 PLP |
Clobbers Y; and writes in stack |
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 |
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 0B LDX #11 C5 C5 CMP $C5 CA DEX D0 FB BNE *-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 LDA #55 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #63 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 8C TXA A2 0C LDX #12 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 0C LDX #12 EA NOP CA DEX D0 FC BNE *-2 AA TAX 28 PLP |
Clobbers A; and writes in stack |
| 11 bytes | |
EA ... NOP × 2 86 xx STX @zptemp A2 11 LDX #17 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 12 bytes | |
08 PHP 48 PHA 8C TXA A2 0B LDX #11 EA NOP CA DEX D0 FC BNE *-2 AA TAX 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 LDA #70 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 | |
18 CLC 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 0C LDX #12 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 |
Clobbers X, Z&N, and C |
A0 0C LDY #12 C5 C5 CMP $C5 88 DEY D0 FB BNE *-3 |
Clobbers Y, Z&N, and C |
A2 0C LDX #12 24 24 BIT $24 CA DEX D0 FB BNE *-3 |
Clobbers X, Z&N, and V |
A0 0C LDY #12 24 24 BIT $24 88 DEY D0 FB BNE *-3 |
Clobbers Y, Z&N, and V |
A2 08 LDX #8 08 PHP 28 PLP CA DEX D0 FB BNE *-3 |
Clobbers X, and Z&N; and writes in stack |
A0 08 LDY #8 08 PHP 28 PLP 88 DEY D0 FB BNE *-3 |
Clobbers Y, and Z&N; and writes in stack |
A2 0C LDX #12 A5 A5 LDA $A5 CA DEX D0 FB BNE *-3 |
Clobbers A, X, and Z&N |
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 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 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 8C TXA A2 12 LDX #18 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 3 A2 12 LDX #18 CA DEX D0 FD BNE *-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 8C TXA A2 11 LDX #17 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 11 LDX #17 CA DEX D0 FD BNE *-1 AA TAX 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 11 LDY #17 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 12 LDX #18 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 18 CLC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-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 LDA #71 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
EA NOP A2 13 LDX #19 CA DEX D0 FD BNE *-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 13 LDA #19 E9 01 SBC #1 D0 FB BNE *-3 |
Clobbers A, Z&N, C, and V |
08 PHP A2 12 LDX #18 CA DEX D0 FD BNE *-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 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 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP D0 FB BNE *-3 |
Clobbers A, Z&N, and C; and writes in stack |
48 PHA 8C TXA A2 12 LDX #18 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N; and writes in stack |
| 9 bytes | |
48 PHA A9 E9 LDA #$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 |
A5 A5 LDA $A5 8C TXA A2 12 LDX #18 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP A9 E9 LDA #$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 |
08 PHP 48 PHA A9 LDA #57 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #65 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 | |
86 xx STX @zptemp A2 0D LDX #13 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
EA NOP 48 PHA 8C TXA A2 0C LDX #12 EA NOP CA DEX D0 FC BNE *-2 AA TAX 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 86 xx STX @zptemp A2 0C LDX #12 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @zptemp 28 PLP |
Requires @zptemp; and writes in stack |
00 00 BRK 0 08 PHP 48 PHA A9 0A LDA #$0A ;hides 'ASL A' EA NOP 18 CLC D0 FB BNE *-3 68 PLA 28 PLP |
Requires dummy interrupt handler; and writes in stack |
48 PHA 08 PHP 48 PHA A9 E9 LDA #$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 | |
08 PHP 48 PHA 38 SEC A9 09 LDA #9 EA ... NOP × 2 E9 01 SBC #1 D0 F9 BNE *-5 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 LDA #72 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 0E LDX #14 EA NOP CA DEX D0 FC BNE *-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 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 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 18 CLC 10 FA BPL *-4 |
Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack |
68 PLA A9 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP D0 FB BNE *-3 |
Clobbers A, S, Z&N, and C; and writes in stack |
| 8 bytes | |
EA ... NOP × 2 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 |
08 PHP A2 0D LDX #13 EA NOP CA DEX D0 FC BNE *-2 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 0D LDY #13 EA NOP 88 DEY D0 FC BNE *-2 28 PLP |
Clobbers Y; and writes in stack |
68 PLA 8C TXA A2 12 LDX #18 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 12 LDX #18 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #58 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #66 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 8C TXA A2 11 LDX #17 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 08 PHP 8C TXA A2 11 LDX #17 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA NOP 86 xx STX @zptemp A2 12 LDX #18 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 10 LDX #16 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #73 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 0B LDX #11 68 PLA CA DEX D0 FC BNE *-2 |
Clobbers A, X, S, and Z&N |
A0 0B LDY #11 68 PLA 88 DEY D0 FC BNE *-2 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 13 LDX #19 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 13 LDX #19 CA DEX D0 FD BNE *-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 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 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 12 LDX #18 CA DEX D0 FD BNE *-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 FB BNE *-3 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 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP 48 PHA A9 LDA #59 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #67 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 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 12 LDX #18 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 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-2 68 PLA 28 PLP |
Clobbers S; and writes in stack |
| 12 bytes | |
08 PHP 24 24 BIT $24 48 PHA 18 CLC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 10 FC BPL *-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 14 LDX #20 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 14 LDY #20 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #74 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
48 PHA A9 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 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 0E LDA #14 EA NOP E9 01 SBC #1 D0 FA BNE *-4 |
Clobbers A, Z&N, C, and V |
F6 F6 INC $F6,X A9 0A LDA #$0A ;hides 'ASL 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 |
8C TXA A2 0C LDX #12 48 PHA CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, S, and Z&N; and writes in stack |
48 PHA 08 PHP A2 12 LDX #18 CA DEX D0 FD BNE *-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 | |
8C TXA A2 0C LDX #12 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 AA TAX |
Clobbers A, Z&N, and C |
8C TXA A2 0C LDX #12 24 24 BIT $24 CA DEX D0 FB BNE *-3 AA TAX |
Clobbers A, Z&N, and V |
8C TXA A2 08 LDX #8 08 PHP 28 PLP CA DEX D0 FB BNE *-3 AA TAX |
Clobbers A, and Z&N; and writes in stack |
08 PHP A6 A6 LDX $A6 A2 12 LDX #18 CA DEX D0 FD BNE *-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 |
8C TXA A2 0C LDX #12 85 xx STA @zptemp CA DEX D0 FB BNE *-3 AA TAX |
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 LDA #60 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #68 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
8C TXA A2 0C LDX #12 04 04 NOP $04 CA DEX D0 FB BNE *-3 AA TAX |
Clobbers A, and Z&N; and requires support for unofficial opcodes |
EA NOP 68 PLA 8C TXA A2 12 LDX #18 CA DEX D0 FD BNE *-1 AA TAX |
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 |
EA ... NOP × 3 8C TXA A2 12 LDX #18 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 38 SEC A9 0D LDA #13 EA NOP E9 01 SBC #1 D0 FA BNE *-4 28 PLP |
Clobbers A; and writes in stack |
| 11 bytes | |
08 PHP 48 PHA A9 0A LDA #$0A ;hides 'ASL A' EA ... NOP × 2 18 CLC D0 FA BNE *-4 68 PLA 28 PLP |
Writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 12 LDX #18 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #75 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 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 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 13 LDX #19 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
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 A2 0B LDX #11 68 PLA CA DEX D0 FC BNE *-2 |
Clobbers A, X, S, and Z&N |
EA NOP A0 0B LDY #11 68 PLA 88 DEY D0 FC BNE *-2 |
Clobbers A, Y, S, and Z&N |
| 8 bytes | |
48 PHA 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 |
EA NOP 8C TXA A2 13 LDX #19 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP A9 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
A6 A6 LDX $A6 A2 0E LDX #14 EA NOP CA DEX D0 FC BNE *-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 8C TXA A2 12 LDX #18 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA ... NOP × 2 08 PHP A2 12 LDX #18 CA DEX D0 FD BNE *-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 |
86 xx STX @zptemp A2 13 LDX #19 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 10 FC BPL *-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 LDA #76 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
EA NOP A2 14 LDX #20 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 14 LDY #20 88 DEY D0 FD BNE *-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 14 LDA #20 E9 01 SBC #1 D0 FB BNE *-3 |
Clobbers A, Z&N, C, and V |
08 PHP A2 13 LDX #19 CA DEX D0 FD BNE *-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 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 LDA #69 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 18 CLC D0 FA BNE *-4 |
Clobbers A, S, Z&N, and C; and writes in stack |
| 8 bytes | |
8C TXA A2 0E LDX #14 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
| 9 bytes | |
08 PHP 48 PHA A9 LDA #62 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #70 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 8C TXA A2 0D LDX #13 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 0D LDX #13 EA NOP CA DEX D0 FC BNE *-2 AA TAX 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 | |
86 xx STX @zptemp A2 0C LDX #12 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 A6 xx LDX @zptemp |
Clobbers Z&N, and C; and requires @zptemp |
86 xx STX @zptemp A2 0C LDX #12 24 24 BIT $24 CA DEX D0 FB BNE *-3 A6 xx LDX @zptemp |
Clobbers Z&N, and V; and requires @zptemp |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 12 LDX #18 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and writable $00-$FF |
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 |
86 xx STX @zptemp A2 0C LDX #12 04 04 NOP $04 CA DEX D0 FB BNE *-3 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes |
| 12 bytes | |
08 PHP 48 PHA 8C TXA A2 0C LDX #12 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA 28 PLP |
Writes in stack |
E6 xx INC @zptemp 86 xx STX @zptemp A2 0D LDX #13 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @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 LDA #77 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
48 PHA A2 14 LDX #20 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 PHA A0 14 LDY #20 88 DEY D0 FD BNE *-1 |
Clobbers Y, S, and Z&N; and writes in stack |
| 7 bytes | |
A6 A6 LDX $A6 A2 14 LDX #20 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A4 A4 LDY $A4 A0 14 LDY #20 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 18 CLC 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 8C TXA A2 13 LDX #19 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
48 PHA 18 CLC 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 |
EA ... NOP × 2 8C TXA A2 13 LDX #19 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 18 CLC A9 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 0C LDX #12 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 0C LDY #12 C5 C5 CMP $C5 88 DEY D0 FB BNE *-3 28 PLP |
Clobbers Y; and writes in stack |
08 PHP 48 PHA A9 LDA #63 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #71 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
EA NOP 48 PHA 8C TXA A2 12 LDX #18 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 86 xx STX @zptemp A2 13 LDX #19 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 11 LDX #17 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #78 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 0D LDX #13 48 PHA CA DEX D0 FC BNE *-2 |
Clobbers X, S, and Z&N; and writes in stack |
A0 0D LDY #13 48 PHA 88 DEY D0 FC BNE *-2 |
Clobbers Y, S, and Z&N; and writes in stack |
68 PLA A2 14 LDX #20 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 14 LDY #20 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 14 LDX #20 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 14 LDY #20 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 13 LDX #19 CA DEX D0 FD BNE *-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 13 LDA #19 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 13 LDA #19 E9 01 SBC #1 D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP 48 PHA A9 LDA #64 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #72 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 ... PHA × 2 A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP D0 FB BNE *-3 68 PLA |
Clobbers Z&N, and C; and writes in stack |
86 xx STX @zptemp A2 0E LDX #14 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
48 ... PHA × 2 8C TXA A2 12 LDX #18 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
| 11 bytes | |
08 PHP 48 PHA A9 E9 LDA #$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 $04 |
Requires support for unofficial opcodes |
| 54 bytes | |
EA ... NOP × 51 4C xx xx JMP *+3 |
Not relocatable code |
106 cycles
| 5 bytes | |
|---|---|
A2 15 LDX #21 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 15 LDY #21 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #79 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A9 E9 LDA #$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 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 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 0E LDX #14 EA NOP CA DEX D0 FC BNE *-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 0A LDA #$0A ;hides 'ASL 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 14 LDA #20 E9 01 SBC #1 D0 FB BNE *-3 |
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 LDA #65 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #73 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 PHA 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 |
08 PHP A9 0A LDA #$0A ;hides 'ASL A' 00 00 BRK 0 18 CLC 10 FA BPL *-4 28 PLP |
Clobbers A; requires dummy interrupt handler; and writes in stack |
EA NOP 68 PLA 8C TXA A2 13 LDX #19 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 10 bytes | |
EA ... NOP × 2 48 PHA 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 |
A5 A5 LDA $A5 8C TXA A2 0E LDX #14 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 08 PHP A9 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
| 11 bytes | |
EA ... NOP × 2 48 PHA 8C TXA A2 12 LDX #18 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 13 LDX #19 CA DEX D0 FD BNE *-1 A6 xx LDX @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 8C TXA A2 11 LDX #17 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #80 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 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 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 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
| 9 bytes | |
48 PHA 8C TXA A2 13 LDX #19 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 13 LDX #19 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 13 LDX #19 CA DEX D0 FD BNE *-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 |
86 xx STX @zptemp A2 14 LDX #20 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 FB BNE *-3 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 LDA #81 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
EA NOP A2 15 LDX #21 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 15 LDY #21 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 7 bytes | |
38 SEC A9 15 LDA #21 E9 01 SBC #1 D0 FB BNE *-3 |
Clobbers A, Z&N, C, and V |
08 PHP A2 14 LDX #20 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 14 LDY #20 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA A9 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 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 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N; and writes in stack |
| 9 bytes | |
A5 A5 LDA $A5 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #67 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #75 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 0E LDA #14 EA NOP E9 01 SBC #1 D0 FA BNE *-4 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
08 PHP 38 SEC A9 0E LDA #14 EA NOP E9 01 SBC #1 D0 FA BNE *-4 28 PLP |
Clobbers A; and writes in stack |
F6 F6 INC $F6,X 48 PHA A9 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 08 LDX #8 08 PHP 28 PLP CA DEX D0 FB BNE *-3 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 13 LDX #19 CA DEX D0 FD BNE *-1 A6 xx LDX @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 0D LDA #13 EA NOP E9 01 SBC #1 D0 FA BNE *-4 68 PLA 28 PLP |
Writes in stack |
86 xx STX @zptemp A6 A6 LDX $A6 A2 0E LDX #14 EA NOP CA DEX D0 FC BNE *-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 LDA #82 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A0 88 LDY #136 ;hides 'DEY' F6 F6 INC $F6,X 30 FB BMI *-3 |
Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF |
48 PHA A2 15 LDX #21 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 PHA A0 15 LDY #21 88 DEY D0 FD BNE *-1 |
Clobbers Y, 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 |
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 15 LDY #21 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 18 CLC 10 F9 BPL *-5 |
Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack |
18 CLC A9 F4 LDA #244 ;hides 'NOP zp,X' EA NOP 69 01 ADC #1 D0 F9 BNE *-5 |
Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes |
68 PLA 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX |
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 LDA #68 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #76 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 ... PHA × 2 08 PHP A2 13 LDX #19 CA DEX D0 FD BNE *-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 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP D0 FB BNE *-3 68 PLA 28 PLP |
Writes in stack |
EA NOP 86 xx STX @zptemp A2 14 LDX #20 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #83 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
68 PLA A2 15 LDX #21 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 15 LDY #21 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX |
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 15 LDY #21 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 14 LDX #20 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 14 LDY #20 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
48 PHA 38 SEC A9 14 LDA #20 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 14 LDA #20 E9 01 SBC #1 D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP 48 PHA A9 LDA #69 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #77 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 8C TXA A2 0E LDX #14 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
| 11 bytes | |
86 xx STX @zptemp A6 A6 LDX $A6 A2 14 LDX #20 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 12 bytes | |
08 PHP 48 PHA 8C TXA A2 0D LDX #13 EA NOP CA DEX D0 FC BNE *-2 AA TAX 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 16 LDX #22 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 16 LDY #22 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 7 bytes | |
A9 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP 18 CLC D0 FA BNE *-4 |
Clobbers A, Z&N, and C; and writes in stack |
48 PHA A9 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 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 | |
8C TXA A2 18 LDX #24 ;hides 'CLC' CA ... DEX × 2 D0 FB BNE *-3 AA TAX |
Clobbers A, and Z&N |
48 PHA 08 PHP A2 14 LDX #20 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 D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 9 bytes | |
08 PHP A6 A6 LDX $A6 A2 14 LDX #20 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 D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
08 PHP 48 PHA A9 LDA #70 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #78 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 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 A9 0A LDA #$0A ;hides 'ASL A' 20 xx xx JSR @rts14 18 CLC 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 |
86 xx STX @zptemp A2 0D LDX #13 48 PHA CA DEX D0 FC BNE *-2 A6 xx LDX @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 18 CLC 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 86 xx STX @zptemp A2 14 LDX #20 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #85 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 15 LDY #21 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF |
48 PHA A9 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 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 |
48 ... PHA × 2 A0 15 LDY #21 88 DEY D0 FD BNE *-1 |
Clobbers Y, 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 |
EA NOP 68 PLA A0 15 LDY #21 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 8 bytes | |
EA NOP 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX |
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 15 LDY #21 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 9 bytes | |
48 PHA 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 0D LDX #13 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 0D LDY #13 C5 C5 CMP $C5 88 DEY D0 FB BNE *-3 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 15 LDX #21 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 13 LDA #19 E9 01 SBC #1 D0 FB BNE *-3 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 $36,X× 9 |
Clobbers Z&N |
| 56 bytes | |
EA ... NOP × 56 |
No requirements |
113 cycles
| 5 bytes | |
|---|---|
A9 LDA #86 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
18 CLC A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only D0 FC BNE *-2 |
Clobbers A, Z&N, C, and V |
A2 10 LDX #16 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 10 LDY #16 EA NOP 88 DEY D0 FC BNE *-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 15 LDY #21 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA A9 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 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 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP 18 CLC D0 FA BNE *-4 |
Clobbers A, Z&N, and C; and writes in stack |
98 TYA A0 88 LDY #136 ;hides 'DEY' F6 F6 INC $F6,X 30 FB BMI *-3 A8 TAY |
Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF |
48 PHA 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N; and writes in stack |
| 9 bytes | |
A5 A5 LDA $A5 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #72 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #80 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
86 xx STX @zptemp A2 18 LDX #24 ;hides 'CLC' CA ... DEX × 2 D0 FB BNE *-3 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
48 ... PHA × 2 38 SEC A9 14 LDA #20 E9 01 SBC #1 D0 FB BNE *-3 68 PLA |
Clobbers S, Z&N, C, and V; and writes in stack |
48 PHA 08 PHP 38 SEC A9 14 LDA #20 E9 01 SBC #1 D0 FB BNE *-3 28 PLP |
Clobbers A, and S; and writes in stack |
| 11 bytes | |
24 24 BIT $24 48 PHA 38 SEC A9 14 LDA #20 E9 01 SBC #1 D0 FB BNE *-3 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
08 PHP A5 A5 LDA $A5 38 SEC A9 14 LDA #20 E9 01 SBC #1 D0 FB BNE *-3 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 18 CLC 10 FA BPL *-4 68 PLA 28 PLP |
Requires dummy interrupt handler; and writes in stack |
48 ... PHA × 3 8C TXA A2 13 LDX #19 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
| 12 bytes | |
EA ... NOP × 2 08 PHP 48 PHA A9 0A LDA #$0A ;hides 'ASL 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 $04 |
Requires support for unofficial opcodes |
| 58 bytes | |
EA ... NOP × 55 4C xx xx JMP *+3 |
Not relocatable code |
114 cycles
| 5 bytes | |
|---|---|
A9 LDA #87 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
48 PHA A9 E9 LDA #$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 16 LDX #22 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 PHA A0 16 LDY #22 88 DEY D0 FD BNE *-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 16 LDX #22 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A4 A4 LDY $A4 A0 16 LDY #22 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #73 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #81 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
EA NOP 48 PHA 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 08 PHP 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA NOP 86 xx STX @zptemp A2 15 LDX #21 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 13 LDX #19 CA DEX D0 FD BNE *-1 AA TAX 68 PLA 28 PLP |
Writes in stack |
| 38 bytes | |
36 36 ROL $36,X \ × 5 76 36 ROR $36,X / 36 36... ROL $36,X× 9 |
Clobbers Z&N |
| 57 bytes | |
EA ... NOP × 57 |
No requirements |
115 cycles
| 5 bytes | |
|---|---|
A9 LDA #88 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
68 PLA A9 E9 LDA #$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 16 LDX #22 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 16 LDY #22 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 16 LDX #22 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 16 LDX #22 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 16 LDY #22 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 15 LDY #21 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
48 PHA 38 SEC A9 15 LDA #21 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 15 LDA #21 E9 01 SBC #1 D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP 48 PHA A9 LDA #74 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #82 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
00 00 BRK 0 48 PHA A9 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
| 11 bytes | |
48 PHA A5 A5 LDA $A5 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX 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 0E LDA #14 EA NOP E9 01 SBC #1 D0 FA BNE *-4 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 17 LDY #23 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 7 bytes | |
48 PHA A9 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 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 | |
08 PHP A0 88 LDY #136 ;hides 'DEY' F6 F6 INC $F6,X 30 FB BMI *-3 28 PLP |
Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack |
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 15 LDY #21 88 DEY D0 FD BNE *-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 15 LDY #21 88 DEY D0 FD BNE *-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 LDA #75 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #83 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 10 bytes | |
EA ... NOP × 3 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
48 PHA A9 0A LDA #$0A ;hides 'ASL A' 20 xx xx JSR @rts15 18 CLC 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 18 CLC 10 F9 BPL *-5 28 PLP |
Clobbers A; requires @rts12, and @rts15; and writes in stack |
48 PHA 18 CLC A9 F4 LDA #244 ;hides 'NOP zp,X' EA NOP 69 01 ADC #1 D0 F9 BNE *-5 68 PLA |
Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack |
08 PHP 18 CLC A9 F4 LDA #244 ;hides 'NOP zp,X' EA NOP 69 01 ADC #1 D0 F9 BNE *-5 28 PLP |
Clobbers A; requires support for unofficial opcodes; and writes in stack |
| 11 bytes | |
EA ... NOP × 2 48 PHA 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 0D LDX #13 24 24 BIT $24 CA DEX D0 FB BNE *-3 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 15 LDX #21 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 12 bytes | |
EA NOP 08 PHP 48 PHA 8C TXA A2 13 LDX #19 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #90 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
A2 0D LDX #13 ;hides 'ORA abs' A5 A5 LDA $A5 CA DEX D0 FA BNE *-4 |
Clobbers A, X, and Z&N |
A0 0D LDY #13 ;hides 'ORA abs' A5 A5 LDA $A5 88 DEY D0 FA BNE *-4 |
Clobbers A, 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 16 LDY #22 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF |
48 PHA A9 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 LDA #83 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 ;hides 'NOP abs' 44 00 NOP $0 CA DEX 10 FA BPL *-4 |
Clobbers X, and Z&N; and requires support for unofficial opcodes |
A0 0C LDY #12 ;hides 'NOP abs' 44 00 NOP $0 88 DEY 10 FA BPL *-4 |
Clobbers Y, and Z&N; and requires support for unofficial opcodes |
EA NOP 68 PLA A9 E9 LDA #$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 16 LDX #22 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 ... PHA × 2 A0 16 LDY #22 88 DEY D0 FD BNE *-1 |
Clobbers Y, S, and Z&N; and writes in stack |
| 8 bytes | |
8C TXA A2 10 LDX #16 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 3 A2 16 LDX #22 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 3 A0 16 LDY #22 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 9 bytes | |
48 PHA 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX 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 15 LDY #21 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 16 LDX #22 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 14 LDA #20 E9 01 SBC #1 D0 FB BNE *-3 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 $04 |
Requires support for unofficial opcodes |
| 60 bytes | |
EA ... NOP × 57 4C xx xx JMP *+3 |
Not relocatable code |
118 cycles
| 5 bytes | |
|---|---|
A9 LDA #91 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
18 CLC A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only B0 FC BCS *-2 |
Clobbers A, Z&N, C, and V |
EA NOP A2 17 LDX #23 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 17 LDY #23 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 7 bytes | |
48 PHA A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only D0 FC BNE *-2 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
08 PHP A9 E9 LDA #$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 16 LDX #22 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 16 LDY #22 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
48 PHA A9 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 16 LDX #22 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #77 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #85 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 8C TXA A2 18 LDX #24 ;hides 'CLC' CA ... DEX × 2 D0 FB BNE *-3 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
| 11 bytes | |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 15 LDX #21 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and writable $00-$FF |
| 12 bytes | |
EA ... NOP × 3 86 xx STX @zptemp A2 15 LDX #21 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 0A LDA #$0A ;hides 'ASL A' 20 xx xx JSR @rts14 18 CLC 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 8C TXA A2 13 LDX #19 CA DEX D0 FD BNE *-1 AA TAX 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 $36,X / |
Clobbers Z&N |
| 59 bytes | |
EA ... NOP × 59 |
No requirements |
119 cycles
| 5 bytes | |
|---|---|
A9 LDA #92 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A0 88 LDY #136 ;hides 'DEY' 08 PHP 28 PLP 30 FB BMI *-3 |
Clobbers Y, and Z&N; and writes in stack |
A0 88 LDY #136 ;hides 'DEY' 68 PLA 48 PHA 30 FB BMI *-3 |
Clobbers A, Y, and Z&N |
48 PHA A9 E9 LDA #$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 17 LDY #23 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 LDA #85 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 08 PHP 28 PLP D0 FA BNE *-4 |
Clobbers A, S, Z&N, and C; and writes in stack |
| 8 bytes | |
A9 0A LDA #$0A ;hides 'ASL A' 08 PHP 24 24 BIT $24 28 PLP D0 F9 BNE *-5 |
Clobbers A, Z&N, and C; and writes in stack |
68 PLA 8C TXA A2 16 LDX #22 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 16 LDX #22 CA DEX D0 FD BNE *-1 AA TAX |
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 15 LDY #21 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 LDA #78 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #86 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 15 LDY #21 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 10 bytes | |
EA NOP 48 PHA 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 08 PHP 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX 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 15 LDY #21 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 10 LDX #16 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX 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 $04 |
Requires support for unofficial opcodes |
| 61 bytes | |
EA ... NOP × 58 4C xx xx JMP *+3 |
Not relocatable code |
120 cycles
| 5 bytes | |
|---|---|
A9 LDA #93 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 11 LDX #17 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 11 LDY #17 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
68 PLA A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only B0 FC BCS *-2 |
Clobbers A, S, Z&N, C, and V |
| 7 bytes | |
8C TXA A2 17 LDX #23 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
48 PHA A9 LDA #86 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #86 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
| 8 bytes | |
48 PHA 18 CLC A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only D0 FC BNE *-2 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
08 PHP 18 CLC A9 E9 LDA #$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 10 LDX #16 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 D0 FC BNE *-2 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
08 PHP 48 PHA A9 LDA #79 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #87 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 18 CLC A9 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP 18 CLC D0 FA BNE *-4 68 PLA |
Clobbers Z&N, and C; and writes in stack |
48 PHA 98 TYA A0 88 LDY #136 ;hides 'DEY' F6 F6 INC $F6,X 30 FB BMI *-3 A8 TAY 68 PLA |
Clobbers Z&N; requires @zptemp, and writable $00-$FF; and writes in stack |
48 ... PHA × 2 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
| 11 bytes | |
48 PHA A5 A5 LDA $A5 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
86 xx STX @zptemp A6 A6 LDX $A6 A2 16 LDX #22 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 12 bytes | |
08 PHP 86 xx STX @zptemp A2 18 LDX #24 ;hides 'CLC' CA ... DEX × 2 D0 FB BNE *-3 A6 xx LDX @zptemp 28 PLP |
Requires @zptemp; and writes in stack |
48 PHA 08 PHP 48 PHA 38 SEC A9 14 LDA #20 E9 01 SBC #1 D0 FB BNE *-3 68 PLA 28 PLP |
Clobbers S; and writes in stack |
| 13 bytes | |
08 PHP 24 24 BIT $24 48 PHA 38 SEC A9 14 LDA #20 E9 01 SBC #1 D0 FB BNE *-3 68 PLA 28 PLP |
Writes in stack |
| 40 bytes | |
36 36 ROL $36,X \ × 10 76 36 ROR $36,X / |
Clobbers Z&N |
| 60 bytes | |
EA ... NOP × 60 |
No requirements |
121 cycles
| 5 bytes | |
|---|---|
A2 18 LDX #24 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 18 LDY #24 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #94 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
A9 E9 LDA #$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 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 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 16 LDX #22 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
48 PHA 08 PHP A0 16 LDY #22 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 9 bytes | |
24 24 BIT $24 48 PHA A9 E9 LDA #$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 |
08 PHP A6 A6 LDX $A6 A2 16 LDX #22 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A4 A4 LDY $A4 A0 16 LDY #22 88 DEY D0 FD BNE *-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 LDA #80 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #88 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
8C TXA A2 0C LDX #12 ;hides 'NOP abs' 44 00 NOP $0 CA DEX 10 FA BPL *-4 AA TAX |
Clobbers A, and Z&N; and requires support for unofficial opcodes |
EA NOP 68 PLA 8C TXA A2 16 LDX #22 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 10 bytes | |
EA ... NOP × 3 8C TXA A2 16 LDX #22 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
48 ... PHA × 2 A9 0A LDA #$0A ;hides 'ASL A' 08 PHP 28 PLP 18 CLC D0 FA BNE *-4 68 PLA |
Clobbers S, Z&N, and C; and writes in stack |
85 xx STA @zptemp 68 PLA A9 E9 LDA #$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 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 16 LDX #22 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 12 bytes | |
EA NOP 08 PHP 48 PHA 8C TXA A2 14 LDX #20 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #95 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
38 SEC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only EA NOP 10 FB BPL *-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 11 LDY #17 EA NOP 88 DEY D0 FC BNE *-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 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 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 8C TXA A2 17 LDX #23 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
| 9 bytes | |
48 PHA 8C TXA A2 16 LDX #22 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 16 LDX #22 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 16 LDX #22 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 2 08 PHP A0 16 LDY #22 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 17 LDX #23 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 15 LDA #21 E9 01 SBC #1 D0 FB BNE *-3 68 PLA 28 PLP |
Writes in stack |
| 41 bytes | |
EA NOP 36 36 ROL $36,X \ × 10 76 36 ROR $36,X / |
Clobbers Z&N |
| 61 bytes | |
EA ... NOP × 61 |
No requirements |
123 cycles
| 5 bytes | |
|---|---|
A9 LDA #96 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
EA NOP A2 18 LDX #24 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 18 LDY #24 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 7 bytes | |
48 PHA A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only B0 FC BCS *-2 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
38 SEC A9 18 LDA #24 E9 01 SBC #1 D0 FB BNE *-3 |
Clobbers A, Z&N, C, and V |
08 PHP A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only B0 FC BCS *-2 28 PLP |
Clobbers A; and writes in stack |
08 PHP A2 17 LDX #23 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 17 LDY #23 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
A5 A5 LDA $A5 8C TXA A2 17 LDX #23 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #82 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #90 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 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 |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 16 LDX #22 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and writable $00-$FF |
86 xx STX @zptemp A2 0C LDX #12 ;hides 'NOP abs' 44 00 NOP $0 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 #$0A ;hides 'ASL A' 00 00 BRK 0 90 FB BCC *-3 68 PLA 28 PLP |
Requires dummy interrupt handler; and writes in stack |
48 ... PHA × 3 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
85 xx STA @zptemp EA NOP 68 PLA A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only D0 FC BNE *-2 A5 xx LDA @zptemp |
Clobbers S, Z&N, C, and V; and requires @zptemp |
| 12 bytes | |
EA ... NOP × 3 48 PHA 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA ... NOP × 3 86 xx STX @zptemp A2 16 LDX #22 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 0A LDA #$0A ;hides 'ASL A' 20 xx xx JSR @rts15 18 CLC 10 F9 BPL *-5 68 PLA 28 PLP |
Requires @rts12, and @rts15; and writes in stack |
08 PHP 48 PHA 18 CLC A9 F4 LDA #244 ;hides 'NOP zp,X' EA NOP 69 01 ADC #1 D0 F9 BNE *-5 68 PLA 28 PLP |
Requires support for unofficial opcodes; and writes in stack |
| 13 bytes | |
08 PHP 48 PHA 8C TXA A2 0D LDX #13 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 AA TAX 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 LDA #97 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 $A4 A0 18 LDY #24 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 LDA #90 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #90 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
00 00 BRK 0 A9 E9 LDA #$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 | |
8C TXA A2 11 LDX #17 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
| 9 bytes | |
08 PHP A2 0D LDX #13 ;hides 'ORA abs' A5 A5 LDA $A5 CA DEX D0 FA BNE *-4 28 PLP |
Clobbers A, and X; and writes in stack |
08 PHP A0 0D LDY #13 ;hides 'ORA abs' A5 A5 LDA $A5 88 DEY D0 FA BNE *-4 28 PLP |
Clobbers A, and Y; and writes in stack |
08 PHP A2 16 LDX #22 CA DEX D0 FD BNE *-1 F6 xx INC @zptemp,X 28 PLP |
Clobbers X; requires @zptemp; 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 F6 F6 INC $F6,X A0 16 LDY #22 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 LDA #83 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #91 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
08 PHP A2 0C LDX #12 ;hides 'NOP abs' 44 00 NOP $0 CA DEX 10 FA BPL *-4 28 PLP |
Clobbers X; requires support for unofficial opcodes; and writes in stack |
08 PHP A0 0C LDY #12 ;hides 'NOP abs' 44 00 NOP $0 88 DEY 10 FA BPL *-4 28 PLP |
Clobbers Y; requires support for unofficial opcodes; and writes in stack |
48 ... PHA × 3 A9 E9 LDA #$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 |
48 ... PHA × 2 08 PHP A2 16 LDX #22 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
48 ... PHA × 2 08 PHP A0 16 LDY #22 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 10 bytes | |
48 PHA 8C TXA A2 10 LDX #16 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 10 LDX #16 EA NOP CA DEX D0 FC BNE *-2 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 3 08 PHP A2 16 LDX #22 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 3 08 PHP A0 16 LDY #22 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
EA NOP 86 xx STX @zptemp A2 17 LDX #23 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX 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 $36,X× 9 |
Clobbers Z&N |
| 62 bytes | |
EA ... NOP × 62 |
No requirements |
125 cycles
| 5 bytes | |
|---|---|
A9 LDA #98 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 1A LDX #26 ;hides 'NOP' CA ... DEX × 2 10 FB BPL *-3 |
Clobbers X, and Z&N; and requires support for unofficial opcodes |
A0 1A LDY #26 ;hides 'NOP' 88 ... DEY × 2 10 FB BPL *-3 |
Clobbers Y, and Z&N; and requires support for unofficial opcodes |
68 PLA A2 18 LDX #24 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 18 LDY #24 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 18 LDX #24 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 18 LDX #24 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 18 LDY #24 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 LDA #91 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #91 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
| 8 bytes | |
48 PHA 18 CLC A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only B0 FC BCS *-2 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
08 PHP 18 CLC A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only B0 FC BCS *-2 28 PLP |
Clobbers A; and writes in stack |
EA NOP 08 PHP A2 17 LDX #23 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 17 LDY #23 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
08 PHP 48 PHA A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only D0 FC BNE *-2 68 PLA 28 PLP |
Writes in stack |
85 xx STA @zptemp A9 LDA #92 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 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 $04 |
Requires support for unofficial opcodes |
| 64 bytes | |
EA ... NOP × 61 4C xx xx JMP *+3 |
Not relocatable code |
126 cycles
| 5 bytes | |
|---|---|
A2 19 LDX #25 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 19 LDY #25 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #99 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
48 PHA A9 LDA #92 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #92 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
| 8 bytes | |
08 PHP A0 88 LDY #136 ;hides 'DEY' 08 PHP 28 PLP 30 FB BMI *-3 28 PLP |
Clobbers Y; and writes in stack |
20 xx xx JSR @rts15 A9 E9 LDA #$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 #$0A' 0A ASL A ;first loop only B0 FC BCS *-2 68 PLA |
Clobbers S, Z&N, C, and V; and writes in stack |
EA NOP 68 ... PLA × 2 A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only B0 FC BCS *-2 |
Clobbers A, S, Z&N, C, and V |
48 PHA 08 PHP A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only B0 FC BCS *-2 28 PLP |
Clobbers A, and S; and writes in stack |
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 | |
24 24 BIT $24 48 PHA A9 E9 LDA #$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 |
EA NOP 8C TXA A2 11 LDX #17 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
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 |
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 LDA #85 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #93 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA A9 0A LDA #$0A ;hides 'ASL A' 08 PHP 24 24 BIT $24 28 PLP D0 F9 BNE *-5 68 PLA |
Clobbers Z&N, and C; and writes in stack |
86 xx STX @zptemp A2 11 LDX #17 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
EA ... NOP × 2 48 PHA 8C TXA A2 16 LDX #22 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
| 12 bytes | |
EA NOP 08 PHP 48 PHA 8C TXA A2 15 LDX #21 CA DEX D0 FD BNE *-1 AA TAX 68 PLA 28 PLP |
Writes in stack |
| 42 bytes | |
36 36 ROL $36,X \ × 6 76 36 ROR $36,X / 36 36... ROL $36,X× 9 |
Clobbers Z&N |
| 63 bytes | |
EA ... NOP × 63 |
No requirements |
127 cycles
| 5 bytes | |
|---|---|
A9 LDA #100 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
48 PHA A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
| 6 bytes | |
A2 12 LDX #18 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 12 LDY #18 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
| 7 bytes | |
48 PHA A9 LDA #93 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #93 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
A9 E9 LDA #$E9 ;hides 'SBC #$2A' 2A ROL A ;first loop only 00 00 BRK 0 B0 FA BCS *-4 |
Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack |
| 8 bytes | |
EA NOP 8C TXA A2 18 LDX #24 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP A2 11 LDX #17 EA NOP CA DEX D0 FC BNE *-2 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 11 LDY #17 EA NOP 88 DEY D0 FC BNE *-2 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
48 PHA 8C TXA A2 17 LDX #23 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 17 LDX #23 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
86 xx STX @zptemp A2 18 LDX #24 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 LDA #86 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
| 10 bytes | |
08 PHP 48 PHA 18 CLC A9 E9 LDA #$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 $04 |
Requires support for unofficial opcodes |
| 65 bytes | |
EA ... NOP × 62 4C xx xx JMP *+3 |
Not relocatable code |
128 cycles
| 5 bytes | |
|---|---|
A9 LDA #101 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
68 PLA A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
| 6 bytes | |
8C TXA A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA NOP A2 19 LDX #25 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 19 LDY #25 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 7 bytes | |
08 PHP A2 18 LDX #24 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 18 LDY #24 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA A9 LDA #94 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #94 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
| 9 bytes | |
48 PHA A9 E9 LDA #$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 LDA #87 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #95 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 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 24 24 BIT $24 48 PHA A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only D0 FC BNE *-2 68 PLA 28 PLP |
Writes in stack |
EA NOP 86 xx STX @zptemp A2 11 LDX #17 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @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 LDA #102 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 10 LDX #16 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 D0 FC BNE *-2 |
Clobbers Y, S, and Z&N; and writes in stack |
A0 88 LDY #136 ;hides 'DEY' 68 ... PLA × 2 30 FB BMI *-3 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
A6 A6 LDX $A6 A2 19 LDX #25 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A4 A4 LDY $A4 A0 19 LDY #25 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 LDA #95 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #95 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
00 00 BRK 0 A9 E9 LDA #$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 FA BNE *-4 |
Clobbers A, Z&N, C, and V |
8C TXA A2 1A LDX #26 ;hides 'NOP' CA ... DEX × 2 10 FB BPL *-3 AA TAX |
Clobbers A, and Z&N; and requires support for unofficial opcodes |
68 PLA 8C TXA A2 18 LDX #24 CA DEX D0 FD BNE *-1 AA TAX |
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 10 FB BPL *-3 68 PLA |
Clobbers Z&N, C, V, and D; and writes in stack |
EA ... NOP × 2 8C TXA A2 18 LDX #24 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 38 SEC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only EA NOP 10 FB BPL *-3 28 PLP |
Clobbers A; and writes in stack |
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 11 LDY #17 EA NOP 88 DEY D0 FC BNE *-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 LDA #88 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #96 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 8C TXA A2 17 LDX #23 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 86 xx STX @zptemp A2 18 LDX #24 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 16 LDX #22 CA DEX D0 FD BNE *-1 AA TAX 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 $04 |
Requires support for unofficial opcodes |
| 66 bytes | |
EA ... NOP × 63 4C xx xx JMP *+3 |
Not relocatable code |
130 cycles
| 5 bytes | |
|---|---|
A9 LDA #103 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 F6 xx INC @zptemp,X |
Clobbers X, and Z&N; and requires @zptemp |
48 ... PHA × 2 A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
68 PLA A2 19 LDX #25 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 19 LDY #25 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 19 LDX #25 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 19 LDY #25 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 LDA #96 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #96 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
| 8 bytes | |
EA NOP 08 PHP A2 18 LDX #24 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 18 LDY #24 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 9 bytes | |
08 PHP 48 PHA A9 E9 LDA #$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 1A LDX #26 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 1A LDY #26 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #104 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 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 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 | |
8C TXA A2 12 LDX #18 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
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 $A4 A0 18 LDY #24 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
08 PHP 48 PHA A9 LDA #90 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #98 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
00 00 BRK 0 48 PHA A9 E9 LDA #$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 8C TXA A2 11 LDX #17 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 11 LDX #17 EA NOP CA DEX D0 FC BNE *-2 AA TAX 28 PLP |
Clobbers A; and writes in stack |
86 xx STX @zptemp A2 1A LDX #26 ;hides 'NOP' CA ... DEX × 2 10 FB BPL *-3 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes |
| 11 bytes | |
EA ... NOP × 2 86 xx STX @zptemp A2 18 LDX #24 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 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 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 8C TXA A2 10 LDX #16 EA NOP CA DEX D0 FC BNE *-2 AA TAX 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 LDA #105 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 19 LDY #25 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF |
48 PHA A9 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 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 |
48 ... PHA × 2 A2 19 LDX #25 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 ... PHA × 2 A0 19 LDY #25 88 DEY D0 FD BNE *-1 |
Clobbers Y, S, and Z&N; and writes in stack |
| 8 bytes | |
EA NOP 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 3 A2 19 LDX #25 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 3 A0 19 LDY #25 88 DEY D0 FD BNE *-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 8C TXA A2 18 LDX #24 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 18 LDX #24 CA DEX D0 FD BNE *-1 AA TAX 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 |
86 xx STX @zptemp A2 19 LDX #25 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 18 CLC 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 LDA #106 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
EA NOP A2 1A LDX #26 CA DEX D0 FD BNE *-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 1A LDA #26 E9 01 SBC #1 D0 FB BNE *-3 |
Clobbers A, Z&N, C, and V |
08 PHP A2 19 LDX #25 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 19 LDY #25 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA A9 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 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 |
8C TXA A2 10 LDX #16 48 PHA CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, S, and Z&N; and writes in stack |
| 9 bytes | |
A5 A5 LDA $A5 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #92 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #100 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 PHA 86 xx STX @zptemp A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers S, and Z&N; requires @zptemp; and writes in stack |
| 10 bytes | |
86 xx STX @zptemp A2 12 LDX #18 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
20 xx xx JSR @rts15 48 PHA A9 E9 LDA #$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 24 24 BIT $24 48 PHA A9 E9 LDA #$E9 ;hides 'SBC #$0A' 0A ASL A ;first loop only B0 FC BCS *-2 68 PLA 28 PLP |
Writes in stack |
| 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 $04 |
Requires support for unofficial opcodes |
| 68 bytes | |
EA ... NOP × 65 4C xx xx JMP *+3 |
Not relocatable code |
134 cycles
| 5 bytes | |
|---|---|
A9 LDA #107 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 13 LDX #19 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 13 LDY #19 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
| 7 bytes | |
48 PHA A9 LDA #100 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #100 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
48 PHA 08 PHP A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
| 8 bytes | |
08 PHP A2 12 LDX #18 EA NOP CA DEX D0 FC BNE *-2 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 12 LDY #18 EA NOP 88 DEY D0 FC BNE *-2 28 PLP |
Clobbers Y; and writes in stack |
8C TXA A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 F6 xx INC @zptemp,X AA TAX |
Clobbers A, and Z&N; and requires @zptemp |
A9 E9 LDA #$E9 ;hides 'SBC #$2A' 2A ROL A ;first loop only 20 xx xx JSR @rts14 B0 F9 BCS *-5 |
Clobbers A, Z&N, C, and V; requires @rts12, and @rts14; and writes in stack |
68 PLA 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #93 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #101 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 PHA A9 E9 LDA #$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 8C TXA A2 18 LDX #24 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 08 PHP 8C TXA A2 18 LDX #24 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA NOP 86 xx STX @zptemp A2 19 LDX #25 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 17 LDX #23 CA DEX D0 FD BNE *-1 AA TAX 68 PLA 28 PLP |
Writes in stack |
| 45 bytes | |
EA NOP 36 36 ROL $36,X \ × 11 76 36 ROR $36,X / |
Clobbers Z&N |
| 67 bytes | |
EA ... NOP × 67 |
No requirements |
135 cycles
| 5 bytes | |
|---|---|
A9 LDA #108 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
68 PLA A2 1A LDX #26 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 1A LDY #26 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 1A LDX #26 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 1A LDY #26 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 LDA #101 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #101 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
| 8 bytes | |
48 PHA 8C TXA A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA NOP 08 PHP A2 19 LDX #25 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 19 LDY #25 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
08 PHP 48 PHA A9 LDA #94 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #102 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
E6 xx INC @zptemp 86 xx STX @zptemp A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA A9 E9 LDA #$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 $04 |
Requires support for unofficial opcodes |
| 69 bytes | |
EA ... NOP × 66 4C xx xx JMP *+3 |
Not relocatable code |
136 cycles
| 5 bytes | |
|---|---|
A2 1B LDX #27 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 1B LDY #27 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #109 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
48 PHA A9 LDA #102 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #102 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
A9 E9 LDA #$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 13 LDA #19 EA NOP E9 01 SBC #1 D0 FA BNE *-4 |
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 19 LDX #25 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
48 PHA 08 PHP A0 19 LDY #25 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 9 bytes | |
08 PHP A2 10 LDX #16 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 10 LDY #16 24 24 BIT $24 88 DEY D0 FB BNE *-3 28 PLP |
Clobbers Y; and writes in stack |
8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 F6 xx INC @zptemp,X AA TAX |
Clobbers A, and Z&N; and requires @zptemp |
08 PHP 48 PHA A9 LDA #95 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #103 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
00 00 BRK 0 48 PHA A9 E9 LDA #$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 FA BNE *-4 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
EA ... NOP × 3 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 38 SEC A9 12 LDA #18 EA NOP E9 01 SBC #1 D0 FA BNE *-4 28 PLP |
Clobbers A; and writes in stack |
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 8C TXA A2 1A LDX #26 ;hides 'NOP' CA ... DEX × 2 10 FB BPL *-3 AA TAX 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 10 FB BPL *-3 68 PLA 28 PLP |
Writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 19 LDX #25 CA DEX D0 FD BNE *-1 A6 xx LDX @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 LDA #110 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 11 LDY #17 48 PHA 88 DEY D0 FC BNE *-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 |
A0 11 LDY #17 C5 C5 CMP $C5 88 DEY D0 FB BNE *-3 |
Clobbers Y, Z&N, and C |
A2 11 LDX #17 24 24 BIT $24 CA DEX D0 FB BNE *-3 |
Clobbers X, Z&N, and V |
A0 11 LDY #17 24 24 BIT $24 88 DEY D0 FB BNE *-3 |
Clobbers Y, 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 11 LDY #17 A5 A5 LDA $A5 88 DEY D0 FB BNE *-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 11 LDY #17 85 xx STA @zptemp 88 DEY D0 FB BNE *-3 |
Clobbers Y, and Z&N; and requires @zptemp |
48 PHA A9 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 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 11 LDY #17 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 8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
A6 A6 LDX $A6 A2 13 LDX #19 EA NOP CA DEX D0 FC BNE *-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 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 19 LDX #25 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 2 08 PHP A0 19 LDY #25 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 1A LDX #26 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 18 LDA #24 E9 01 SBC #1 D0 FB BNE *-3 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 $04 |
Requires support for unofficial opcodes |
| 70 bytes | |
EA ... NOP × 67 4C xx xx JMP *+3 |
Not relocatable code |
138 cycles
| 5 bytes | |
|---|---|
A9 LDA #111 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
EA NOP A2 1B LDX #27 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 1B LDY #27 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
38 SEC A9 E9 LDA #$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 1B LDA #27 E9 01 SBC #1 D0 FB BNE *-3 |
Clobbers A, Z&N, C, and V |
08 PHP A2 1A LDX #26 CA DEX D0 FD BNE *-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 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 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 | |
8C TXA A2 13 LDX #19 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
| 9 bytes | |
08 PHP 48 PHA A9 LDA #97 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #105 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 8C TXA A2 12 LDX #18 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 12 LDX #18 EA NOP CA DEX D0 FC BNE *-2 AA TAX 28 PLP |
Clobbers A; and writes in stack |
| 11 bytes | |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 19 LDX #25 CA DEX D0 FD BNE *-1 A6 xx LDX @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 |
85 xx STA @zptemp 68 PLA 8C TXA A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 AA TAX A5 xx LDA @zptemp |
Clobbers S, and Z&N; and requires @zptemp |
| 12 bytes | |
08 PHP 48 PHA 8C TXA A2 11 LDX #17 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA 28 PLP |
Writes in stack |
E6 xx INC @zptemp 86 xx STX @zptemp A2 12 LDX #18 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @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 LDA #112 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 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 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 10 FB BPL *-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 10 FA BPL *-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 10 FA BPL *-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 8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX |
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 19 LDY #25 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 LDA #98 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #106 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 ... PHA × 2 08 PHP A2 19 LDX #25 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
48 ... PHA × 2 08 PHP A0 19 LDY #25 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 10 bytes | |
EA NOP 48 PHA 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 08 PHP 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 3 08 PHP A2 19 LDX #25 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 3 08 PHP A0 19 LDY #25 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
EA NOP 86 xx STX @zptemp A2 1A LDX #26 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 18 LDX #24 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #113 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 | |
8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX |
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 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 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 1A LDX #26 CA DEX D0 FD BNE *-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 1A LDA #26 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 1A LDA #26 E9 01 SBC #1 D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP 48 PHA A9 LDA #99 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #107 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
86 xx STX @zptemp A2 13 LDX #19 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
48 ... PHA × 2 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
| 11 bytes | |
48 PHA A5 A5 LDA $A5 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
48 PHA 08 PHP 86 xx STX @zptemp A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 A6 xx LDX @zptemp 28 PLP |
Clobbers S; requires @zptemp; and writes in stack |
| 12 bytes | |
08 PHP 86 xx STX @zptemp A2 12 LDX #18 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @zptemp 28 PLP |
Requires @zptemp; and writes in stack |
20 xx xx JSR @rts15 08 PHP 48 PHA A9 E9 LDA #$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 18 LDA #24 E9 01 SBC #1 D0 FB BNE *-3 68 PLA 28 PLP |
Clobbers S; and writes in stack |
| 13 bytes | |
EA NOP 08 PHP 48 PHA 8C TXA A2 11 LDX #17 EA NOP CA DEX D0 FC BNE *-2 AA TAX 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 $36,X× 9 |
Clobbers Z&N |
| 70 bytes | |
EA ... NOP × 70 |
No requirements |
141 cycles
| 5 bytes | |
|---|---|
A2 1C LDX #28 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 1C LDY #28 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #114 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
48 PHA A9 LDA #107 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #107 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
48 PHA 38 SEC A9 E9 LDA #$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 13 LDX #19 EA NOP CA DEX D0 FC BNE *-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 |
8C TXA A2 11 LDX #17 48 PHA CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, S, and Z&N; and writes in stack |
| 9 bytes | |
8C TXA A2 11 LDX #17 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 AA TAX |
Clobbers A, Z&N, and C |
8C TXA A2 11 LDX #17 24 24 BIT $24 CA DEX D0 FB BNE *-3 AA TAX |
Clobbers A, Z&N, and V |
8C TXA A2 11 LDX #17 85 xx STA @zptemp CA DEX D0 FB BNE *-3 AA TAX |
Clobbers A, and Z&N; and requires @zptemp |
08 PHP 48 PHA A9 LDA #100 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #108 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
8C TXA A2 11 LDX #17 04 04 NOP $04 CA DEX D0 FB BNE *-3 AA TAX |
Clobbers A, and Z&N; and requires support for unofficial opcodes |
EA NOP 68 PLA 8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 10 bytes | |
A5 A5 LDA $A5 8C TXA A2 13 LDX #19 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
48 PHA 8C TXA A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 F6 xx INC @zptemp,X AA TAX 68 PLA |
Clobbers Z&N; requires @zptemp; and writes in stack |
08 PHP 8C TXA A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 F6 xx INC @zptemp,X AA TAX 28 PLP |
Clobbers A; requires @zptemp; and writes in stack |
48 PHA A9 E9 LDA #$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 #$2A' 2A ROL A ;first loop only 20 xx xx JSR @rts14 B0 F9 BCS *-5 28 PLP |
Clobbers A; requires @rts12, and @rts14; and writes in stack |
48 ... PHA × 3 8C TXA A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
48 ... PHA × 2 08 PHP 8C TXA A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A, and S; and writes in stack |
| 11 bytes | |
EA ... NOP × 2 48 PHA 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA ... NOP × 2 08 PHP 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 1A LDX #26 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 E9 LDA #$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 8C TXA A2 18 LDX #24 CA DEX D0 FD BNE *-1 AA TAX 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 $04 |
Requires support for unofficial opcodes |
| 72 bytes | |
EA ... NOP × 69 4C xx xx JMP *+3 |
Not relocatable code |
142 cycles
| 5 bytes | |
|---|---|
A9 LDA #115 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
A2 18 LDX #24 ;hides 'CLC' EA NOP CA ... DEX × 2 10 FA BPL *-4 |
Clobbers X, and Z&N |
A0 18 LDY #24 ;hides 'CLC' EA NOP 88 ... DEY × 2 10 FA BPL *-4 |
Clobbers Y, and Z&N |
48 PHA A9 LDA #108 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #108 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
68 PLA 38 SEC A9 E9 LDA #$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 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
| 9 bytes | |
48 PHA 8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 1A LDX #26 CA DEX D0 FD BNE *-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 |
86 xx STX @zptemp A2 1B LDX #27 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 $36,X / |
Clobbers Z&N |
| 71 bytes | |
EA ... NOP × 71 |
No requirements |
143 cycles
| 5 bytes | |
|---|---|
A9 LDA #116 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
EA NOP A2 1C LDX #28 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA NOP A0 1C LDY #28 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
18 CLC A9 EB LDA #$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 0A LDA #$0A ;hides 'ASL 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 FB BNE *-3 |
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 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 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 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N; and writes in stack |
| 9 bytes | |
A5 A5 LDA $A5 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #102 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #110 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 38 SEC A9 13 LDA #19 EA NOP E9 01 SBC #1 D0 FA BNE *-4 68 PLA |
Clobbers Z&N, C, and V; and writes in stack |
08 PHP 38 SEC A9 13 LDA #19 EA NOP E9 01 SBC #1 D0 FA BNE *-4 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 |
86 xx STX @zptemp A2 11 LDX #17 48 PHA CA DEX D0 FC BNE *-2 A6 xx LDX @zptemp |
Clobbers S, and Z&N; requires @zptemp; and writes in stack |
| 11 bytes | |
86 xx STX @zptemp A2 11 LDX #17 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 A6 xx LDX @zptemp |
Clobbers Z&N, and C; and requires @zptemp |
86 xx STX @zptemp A2 11 LDX #17 24 24 BIT $24 CA DEX D0 FB BNE *-3 A6 xx LDX @zptemp |
Clobbers Z&N, and V; and requires @zptemp |
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 |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 1A LDX #26 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and writable $00-$FF |
86 xx STX @zptemp A2 11 LDX #17 04 04 NOP $04 CA DEX D0 FB BNE *-3 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and support for unofficial opcodes |
00 00 BRK 0 08 PHP 48 PHA A9 E9 LDA #$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 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX 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 FA BNE *-4 68 PLA 28 PLP |
Writes in stack |
86 xx STX @zptemp A6 A6 LDX $A6 A2 13 LDX #19 EA NOP CA DEX D0 FC BNE *-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 LDA #117 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 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 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 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP A2 11 LDX #17 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 28 PLP |
Clobbers X; and writes in stack |
08 PHP A0 11 LDY #17 C5 C5 CMP $C5 88 DEY D0 FB BNE *-3 28 PLP |
Clobbers Y; and writes in stack |
08 PHP 48 PHA A9 LDA #103 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #111 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
EA NOP 48 PHA 8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 08 PHP 8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA NOP 86 xx STX @zptemp A2 1B LDX #27 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX 68 PLA 28 PLP |
Writes in stack |
| 48 bytes | |
36 36 ROL $36,X \ × 12 76 36 ROR $36,X / |
Clobbers Z&N |
| 72 bytes | |
EA ... NOP × 72 |
No requirements |
145 cycles
| 5 bytes | |
|---|---|
A9 LDA #118 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 12 LDX #18 48 PHA CA DEX D0 FC BNE *-2 |
Clobbers X, S, and Z&N; and writes in stack |
A0 12 LDY #18 48 PHA 88 DEY D0 FC BNE *-2 |
Clobbers Y, S, and Z&N; and writes in stack |
A2 10 LDX #16 68 PLA CA DEX D0 FC BNE *-2 |
Clobbers A, X, S, and Z&N |
A0 10 LDY #16 68 PLA 88 DEY D0 FC BNE *-2 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 1C LDX #28 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 1C LDY #28 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 LDA #111 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #111 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
| 8 bytes | |
EA NOP 08 PHP A2 1B LDX #27 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 1B LDY #27 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA 38 SEC A9 E9 LDA #$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 1B LDA #27 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 1B LDA #27 E9 01 SBC #1 D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP 48 PHA A9 LDA #104 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #112 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 8C TXA A2 13 LDX #19 EA NOP CA DEX D0 FC BNE *-2 AA TAX 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 8C TXA A2 12 LDX #18 EA NOP CA DEX D0 FC BNE *-2 AA TAX 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 $04 |
Requires support for unofficial opcodes |
| 74 bytes | |
EA ... NOP × 71 4C xx xx JMP *+3 |
Not relocatable code |
146 cycles
| 5 bytes | |
|---|---|
A2 1D LDX #29 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
A0 1D LDY #29 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
A9 LDA #119 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
48 PHA A9 LDA #112 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #112 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
48 PHA 18 CLC A9 EB LDA #$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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 FB BNE *-3 |
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 | |
8C TXA A2 18 LDX #24 ;hides 'CLC' EA NOP CA ... DEX × 2 10 FA BPL *-4 AA TAX |
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 LDA #105 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #113 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA 38 SEC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 85 xx STA @zptemp 10 FA BPL *-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 10 FA BPL *-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 10 FA BPL *-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 10 FA BPL *-4 28 PLP |
Clobbers A; requires support for unofficial opcodes; and writes in stack |
| 11 bytes | |
EA ... NOP × 2 48 PHA 8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 38 SEC A9 11 LDA #17 24 24 BIT $24 E9 01 SBC #1 D0 F9 BNE *-5 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 1B LDX #27 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 12 bytes | |
EA NOP 08 PHP 48 PHA 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #120 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 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 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 |
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 A2 10 LDX #16 68 PLA CA DEX D0 FC BNE *-2 |
Clobbers A, X, S, and Z&N |
EA NOP A0 10 LDY #16 68 PLA 88 DEY D0 FC BNE *-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 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX |
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 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX 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 |
86 xx STX @zptemp A2 1C LDX #28 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 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 1A LDA #26 E9 01 SBC #1 D0 FB BNE *-3 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 $04 |
Requires support for unofficial opcodes |
| 75 bytes | |
EA ... NOP × 72 4C xx xx JMP *+3 |
Not relocatable code |
148 cycles
| 5 bytes | |
|---|---|
A9 LDA #121 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
A2 15 LDX #21 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 15 LDY #21 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
18 CLC A9 E9 LDA #$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 FB BNE *-3 |
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 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 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 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N; and writes in stack |
| 9 bytes | |
A5 A5 LDA $A5 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #107 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #115 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 ... PHA × 2 38 SEC A9 E9 LDA #$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 8C TXA A2 11 LDX #17 C5 C5 CMP $C5 CA DEX D0 FB BNE *-3 AA TAX 68 PLA |
Clobbers Z&N, and C; and writes in stack |
48 PHA 8C TXA A2 11 LDX #17 24 24 BIT $24 CA DEX D0 FB BNE *-3 AA TAX 68 PLA |
Clobbers Z&N, and V; and writes in stack |
86 xx STX @zptemp A2 18 LDX #24 ;hides 'CLC' EA NOP CA ... DEX × 2 10 FA BPL *-4 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
48 PHA 8C TXA A2 11 LDX #17 04 04 NOP $04 CA DEX D0 FB BNE *-3 AA TAX 68 PLA |
Clobbers Z&N; requires support for unofficial opcodes; and writes in stack |
48 ... PHA × 3 8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
| 12 bytes | |
48 PHA A5 A5 LDA $A5 8C TXA A2 13 LDX #19 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 48 PHA 8C TXA A2 E8 LDX #232 ;hides 'INX' D0 FD BNE *-1 F6 xx INC @zptemp,X AA TAX 68 PLA 28 PLP |
Requires @zptemp; and writes in stack |
08 PHP 48 PHA A9 E9 LDA #$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 8C TXA A2 19 LDX #25 CA DEX D0 FD BNE *-1 AA TAX 68 PLA 28 PLP |
Writes in stack |
| 74 bytes | |
EA ... NOP × 74 |
No requirements |
149 cycles
| 5 bytes | |
|---|---|
A9 LDA #122 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 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 1D LDY #29 88 DEY D0 FD BNE *-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 1D LDY #29 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 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 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 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX |
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 LDA #108 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #116 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
EA NOP 48 PHA 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 08 PHP 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA NOP 86 xx STX @zptemp A2 1C LDX #28 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX 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 $04 |
Requires support for unofficial opcodes |
| 76 bytes | |
EA ... NOP × 73 4C xx xx JMP *+3 |
Not relocatable code |
150 cycles
| 5 bytes | |
|---|---|
A9 LDA #123 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
68 PLA A2 1D LDX #29 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
68 PLA A0 1D LDY #29 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 7 bytes | |
8C TXA A2 1D LDX #29 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 1D LDX #29 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 1D LDY #29 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
48 PHA A9 LDA #116 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #116 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
| 8 bytes | |
EA NOP 08 PHP A2 1C LDX #28 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA NOP 08 PHP A0 1C LDY #28 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA 18 CLC A9 EB LDA #$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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 FB BNE *-3 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 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP 48 PHA A9 LDA #109 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #117 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA A9 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
| 11 bytes | |
48 PHA A5 A5 LDA $A5 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX 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 13 LDA #19 EA NOP E9 01 SBC #1 D0 FA BNE *-4 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 LDA #124 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
A9 0A LDA #$0A ;hides 'ASL A' 20 xx xx JSR @rts14 D0 FA BNE *-4 |
Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack |
48 PHA A9 LDA #117 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #117 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
48 PHA 18 CLC A9 E9 LDA #$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 0A LDA #$0A ;hides 'ASL 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 FB BNE *-3 |
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 LDA #110 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #118 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
EA NOP 68 PLA 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 10 bytes | |
EA ... NOP × 3 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX |
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 |
86 xx STX @zptemp A2 12 LDX #18 48 PHA CA DEX D0 FC BNE *-2 A6 xx LDX @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 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA ... NOP × 2 08 PHP 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 1C LDX #28 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 12 bytes | |
EA NOP 08 PHP 48 PHA 8C TXA A2 1A LDX #26 CA DEX D0 FD BNE *-1 AA TAX 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 LDA #125 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
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 1D LDY #29 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF |
48 PHA A9 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 LDA #118 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 E9 LDA #$E9 ;hides 'SBC #$9A' 9A TXS ;first loop only D0 FC BNE *-2 |
Clobbers A, S, Z&N, C, and V |
48 ... PHA × 2 A2 1D LDX #29 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 ... PHA × 2 A0 1D LDY #29 88 DEY D0 FD BNE *-1 |
Clobbers Y, S, and Z&N; and writes in stack |
EA NOP 68 PLA A2 1D LDX #29 CA DEX D0 FD BNE *-1 |
Clobbers A, X, S, and Z&N |
EA NOP 68 PLA A0 1D LDY #29 88 DEY D0 FD BNE *-1 |
Clobbers A, Y, S, and Z&N |
| 8 bytes | |
8C TXA A2 15 LDX #21 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 3 A2 1D LDX #29 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 3 A0 1D LDY #29 88 DEY D0 FD BNE *-1 |
Clobbers Y, and Z&N |
| 9 bytes | |
48 PHA 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 1C LDX #28 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 2 08 PHP A0 1C LDY #28 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 1D LDX #29 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 LDA #111 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
| 10 bytes | |
08 PHP 48 PHA 38 SEC A9 E9 LDA #$E9 ;hides 'SBC #$3A' 3A NOP ;first loop only D0 FC BNE *-2 68 PLA 28 PLP |
Requires support for unofficial opcodes; and writes in stack |
| 11 bytes | |
08 PHP 48 PHA 38 SEC A9 1B LDA #27 E9 01 SBC #1 D0 FB BNE *-3 68 PLA 28 PLP |
Writes in stack |
| 76 bytes | |
EA ... NOP × 76 |
No requirements |
153 cycles
| 5 bytes | |
|---|---|
A2 EA LDX #234 ;hides 'NOP' E8 INX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 EA LDY #234 ;hides 'NOP' C8 INY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
A9 LDA #126 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
| 6 bytes | |
18 CLC A9 E9 LDA #$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 FB BNE *-3 |
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 1D LDY #29 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
48 PHA A9 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 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 | |
18 CLC 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 8C TXA A2 1D LDX #29 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N; and writes in stack |
| 9 bytes | |
A5 A5 LDA $A5 8C TXA A2 1D LDX #29 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
08 PHP 48 PHA A9 LDA #112 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #120 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 ... PHA × 2 18 CLC A9 EB LDA #$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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 FB BNE *-3 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 FB BNE *-3 28 PLP |
Clobbers A, and S; and writes in stack |
| 11 bytes | |
48 PHA 8C TXA A2 18 LDX #24 ;hides 'CLC' EA NOP CA ... DEX × 2 10 FA BPL *-4 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 18 LDX #24 ;hides 'CLC' EA NOP CA ... DEX × 2 10 FA BPL *-4 AA TAX 28 PLP |
Clobbers A; and writes in stack |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 1C LDX #28 CA DEX D0 FD BNE *-1 A6 xx LDX @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 | |
EA ... NOP × 3 86 xx STX @zptemp A2 1C LDX #28 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 #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 85 xx STA @zptemp 10 FA BPL *-4 68 PLA 28 PLP |
Requires @zptemp; and writes in stack |
08 PHP 48 PHA 38 SEC A9 69 LDA #$69 ;hides 'ADC #$F8' F8 SED ;first loop only 04 04 NOP $04 10 FA BPL *-4 68 PLA 28 PLP |
Requires support for unofficial opcodes; and writes in stack |
| 13 bytes | |
08 PHP 48 PHA 38 SEC A9 11 LDA #17 24 24 BIT $24 E9 01 SBC #1 D0 F9 BNE *-5 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
| 6 bytes | |
|---|---|
EA NOP A9 LDA #125 20 xx xx JSR delay_a_25_clocks |
Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks |
48 PHA A2 1E LDX #30 CA DEX D0 FD BNE *-1 |
Clobbers X, S, and Z&N; and writes in stack |
48 PHA A0 1E LDY #30 88 DEY D0 FD BNE *-1 |
Clobbers Y, 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 |
A0 11 LDY #17 68 PLA 88 DEY D0 FC BNE *-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 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 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 8C TXA A2 1D LDX #29 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 9 bytes | |
EA ... NOP × 2 8C TXA A2 1D LDX #29 CA DEX D0 FD BNE *-1 AA TAX |
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 LDA #113 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #121 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
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 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA NOP 08 PHP 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX 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 |
86 xx STX @zptemp A2 15 LDX #21 EA NOP CA DEX D0 FC BNE *-2 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX 68 PLA 28 PLP |
Writes in stack |
| 77 bytes | |
EA ... NOP × 77 |
No requirements |
155 cycles
| 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 16 LDX #22 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
A0 16 LDY #22 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
| 7 bytes | |
8C TXA A2 1E LDX #30 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
48 PHA A9 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 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 15 LDY #21 EA NOP 88 DEY D0 FC BNE *-2 28 PLP |
Clobbers Y; and writes in stack |
| 9 bytes | |
48 PHA 38 SEC A9 1D LDA #29 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 1D LDA #29 E9 01 SBC #1 D0 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP 48 PHA A9 LDA #114 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #122 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
E6 xx INC @zptemp 48 PHA A9 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
| 11 bytes | |
48 PHA A5 A5 LDA $A5 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX 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 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 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 0A LDA #$0A ;hides 'ASL 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 1D LDY #29 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 9 bytes | |
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 1D LDY #29 88 DEY D0 FD BNE *-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 LDA #115 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #123 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
EA NOP 68 PLA 8C TXA A2 1D LDX #29 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N |
| 10 bytes | |
EA ... NOP × 3 8C TXA A2 1D LDX #29 CA DEX D0 FD BNE *-1 AA TAX |
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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 0A LDA #$0A ;hides 'ASL 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 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA ... NOP × 2 08 PHP 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 86 xx STX @zptemp A2 1D LDX #29 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
| 12 bytes | |
EA NOP 08 PHP 48 PHA 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX 68 PLA 28 PLP |
Writes in stack |
| 52 bytes | |
36 36 ROL $36,X \ × 13 76 36 ROR $36,X / |
Clobbers Z&N |
| 78 bytes | |
EA ... NOP × 78 |
No requirements |
157 cycles
| 6 bytes | |
|---|---|
68 PLA A2 EA LDX #234 ;hides 'NOP' E8 INX D0 FC BNE *-2 |
Clobbers A, X, S, and Z&N |
68 PLA A0 EA LDY #234 ;hides 'NOP' C8 INY D0 FC BNE *-2 |
Clobbers A, Y, S, and Z&N |
68 PLA A9 LDA #126 20 xx xx JSR delay_a_25_clocks |
Clobbers A, S, Z&N, C, and V; and requires delay_a_25_clocks |
| 7 bytes | |
8C TXA A2 EA LDX #234 ;hides 'NOP' E8 INX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
EA NOP A2 16 LDX #22 EA NOP CA DEX D0 FC BNE *-2 |
Clobbers X, and Z&N |
EA NOP A0 16 LDY #22 EA NOP 88 DEY D0 FC BNE *-2 |
Clobbers Y, and Z&N |
48 PHA A9 LDA #123 20 xx xx JSR delay_a_25_clocks 68 PLA |
Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack |
08 PHP A9 LDA #123 20 xx xx JSR delay_a_25_clocks 28 PLP |
Clobbers A; requires delay_a_25_clocks; and writes in stack |
| 9 bytes | |
48 PHA 8C TXA A2 1D LDX #29 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 1D LDX #29 CA DEX D0 FD BNE *-1 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 2 08 PHP A2 1D LDX #29 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 2 08 PHP A0 1D LDY #29 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
86 xx STX @zptemp A2 1E LDX #30 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 48 PHA A9 LDA #116 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
| 10 bytes | |
08 PHP 48 PHA 18 CLC A9 EB LDA #$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 0A LDA #$0A ;hides 'ASL 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 FB BNE *-3 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
| 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 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 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 8C TXA A2 1E LDX #30 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, S, and Z&N; and writes in stack |
| 9 bytes | |
A5 A5 LDA $A5 8C TXA A2 1E LDX #30 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
48 PHA 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 |
08 PHP A9 0A LDA #$0A ;hides 'ASL 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 LDA #117 20 xx xx JSR delay_a_25_clocks 68 PLA 28 PLP |
Requires delay_a_25_clocks; and writes in stack |
85 xx STA @zptemp A9 LDA #125 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
| 10 bytes | |
48 PHA A9 0A LDA #$0A ;hides 'ASL A' 08 PHP \ × 2 28 PLP / D0 F9 BNE *-5 68 PLA |
Clobbers Z&N, and C; and writes in stack |
08 PHP A9 0A LDA #$0A ;hides 'ASL 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 |
F6 F6 INC $F6,X 86 xx STX @zptemp A2 1D LDX #29 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp, and writable $00-$FF |
48 ... PHA × 3 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
85 xx STA @zptemp 68 PLA 18 CLC A9 E9 LDA #$E9 ;hides 'SBC #$9A' 9A TXS ;first loop only D0 FC BNE *-2 A5 xx LDA @zptemp |
Clobbers S, Z&N, C, and V; and requires @zptemp |
| 12 bytes | |
EA ... NOP × 3 48 PHA 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
EA ... NOP × 3 86 xx STX @zptemp A2 1D LDX #29 CA DEX D0 FD BNE *-1 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP 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 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 8C TXA A2 1B LDX #27 CA DEX D0 FD BNE *-1 AA TAX 68 PLA 28 PLP |
Writes in stack |
| 79 bytes | |
EA ... NOP × 79 |
No requirements |
159 cycles
| 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 0A LDA #$0A ;hides 'ASL 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 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 LDA #125 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 18 CLC D0 FA BNE *-4 |
Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack |
| 8 bytes | |
8C TXA A2 16 LDX #22 EA NOP CA DEX D0 FC BNE *-2 AA TAX |
Clobbers A, and Z&N |
| 9 bytes | |
86 xx STX @zptemp A2 EA LDX #234 ;hides 'NOP' E8 INX D0 FC BNE *-2 A6 xx LDX @zptemp |
Clobbers Z&N; and requires @zptemp |
08 PHP A2 1D LDX #29 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 1D LDY #29 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 LDA #118 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 1D LDX #29 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X, and S; and writes in stack |
48 ... PHA × 2 08 PHP A0 1D LDY #29 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y, and S; and writes in stack |
| 10 bytes | |
48 PHA 8C TXA A2 15 LDX #21 EA NOP CA DEX D0 FC BNE *-2 AA TAX 68 PLA |
Clobbers Z&N; and writes in stack |
08 PHP 8C TXA A2 15 LDX #21 EA NOP CA DEX D0 FC BNE *-2 AA TAX 28 PLP |
Clobbers A; and writes in stack |
EA ... NOP × 3 08 PHP A2 1D LDX #29 CA DEX D0 FD BNE *-1 28 PLP |
Clobbers X; and writes in stack |
EA ... NOP × 3 08 PHP A0 1D LDY #29 88 DEY D0 FD BNE *-1 28 PLP |
Clobbers Y; and writes in stack |
| 11 bytes | |
08 PHP 48 PHA 8C TXA A2 1C LDX #28 CA DEX D0 FD BNE *-1 AA TAX 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
| 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 | |
8C TXA A2 1F LDX #31 CA DEX D0 FD BNE *-1 AA TAX |
Clobbers A, and Z&N |
EA ... NOP × 2 A2 1F LDX #31 CA DEX D0 FD BNE *-1 |
Clobbers X, and Z&N |
EA ... NOP × 2 A0 1F LDY #31 88 DEY D0 FD BNE *-1 |
Clobbers Y, 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 |
08 PHP A0 EA LDY #234 ;hides 'NOP' C8 INY D0 FC BNE *-2 28 PLP |
Clobbers Y; and writes in stack |
48 PHA A9 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 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 FB BNE *-3 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 FB BNE *-3 28 PLP |
Clobbers A; and writes in stack |
08 PHP 48 PHA A9 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 18 CLC 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 |
EA NOP 85 xx STA @zptemp A9 LDA #125 20 xx xx JSR delay_a_25_clocks A5 xx LDA @zptemp |
Clobbers Z&N, C, and V; and requires @zptemp, and delay_a_25_clocks |
48 ... PHA × 2 8C TXA A2 1D LDX #29 CA DEX D0 FD BNE *-1 AA TAX 68 PLA |
Clobbers S, and Z&N; and writes in stack |
| 11 bytes | |
48 PHA A5 A5 LDA $A5 8C TXA A2 1D LDX #29 CA DEX D0 FD BNE *-1 AA TAX 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 0A LDA #$0A ;hides 'ASL 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 C5 C5 CMP $C5 48 PHA A9 0A LDA #$0A ;hides 'ASL 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 FB BNE *-3 68 PLA 28 PLP |
Clobbers S; and writes in stack |
| 13 bytes | |
08 PHP 48 PHA 8C TXA A2 18 LDX #24 ;hides 'CLC' EA NOP CA ... DEX × 2 10 FA BPL *-4 AA TAX 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
- Delay code for functions that produce runtime-determined amount of delay
- Bisqwit's 6502 delay_n macro set for ca65: http://bisqwit.iki.fi/src/6502-inline_delay.7z
