Fixed cycle delay

Delay code

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

All branch instructions assume that no page wrap occurs.

Explanations on the requirements:

• @zp_temp means you have a zeropage address that you can write random data into.
• @rts12 means you know a memory address that contains byte $60 (RTS).
• @rts14 means you know a memory address that contains a harmless 2-cycle instruction that fits your constraints (such as CLC, LDA #0, or NOP), followed by RTS.
• @rts15 means you know a memory address that contains a JMP that jumps to another location that contains RTS.
• Alternatively, @rts15 means you know a memory address that contains a harmless 3-cycle instruction that fits your constraints (such as LDA $00), followed by RTS.
• @A, @X, @Y are local labels.

2 cycles

1 bytes
NOP	Clobbers nothing, requires nothing

3 cycles

1 bytes
PHA	Clobbers S
2 bytes
LDA $00	Clobbers A, and Z&N
BIT $00	Clobbers Z&N, and V
STA @zptemp	Requires @zptemp
NOP $00	Requires support for unofficial opcodes
3 bytes
JMP *+3	Clobbers nothing, requires nothing

4 cycles

1 bytes
PLA	Clobbers A, S, and Z&N
2 bytes
NOP NOP	Clobbers nothing, requires nothing

5 cycles

2 bytes
NOP PHA	Clobbers S
3 bytes
NOP LDA $00	Clobbers A, and Z&N
NOP BIT $00	Clobbers Z&N, and V
NOP STA @zptemp	Requires @zptemp
NOP NOP $00	Requires support for unofficial opcodes
4 bytes
NOP JMP *+3	Clobbers nothing, requires nothing

6 cycles

2 bytes
PHA PHA	Clobbers S
3 bytes
NOP NOP NOP	Clobbers nothing, requires nothing

7 cycles

2 bytes
PHP PLP	Clobbers nothing, requires nothing

8 cycles

2 bytes
PLA PLA	Clobbers A, S, and Z&N
3 bytes
TSX PLA TXS	Clobbers A, X, and Z&N
NOP PHA PHA	Clobbers S
4 bytes
NOP NOP NOP NOP	Clobbers nothing, requires nothing

9 cycles

3 bytes
NOP PHP PLP	Clobbers nothing, requires nothing

10 cycles

3 bytes
PHA PHP PLP	Clobbers S
4 bytes
PHP BIT $00 PLP	Clobbers nothing, requires nothing

11 cycles

3 bytes
PHA PLA PLA	Clobbers A, S, and Z&N
4 bytes
NOP NOP PHP PLP	Clobbers nothing, requires nothing

12 cycles

3 bytes
JSR @rts12	Requires @rts12
PLA PLA PLA	Clobbers A, S, and Z&N
4 bytes
ROL $00,X ROR $00,X	Clobbers Z&N
NOP PHA PHP PLP	Clobbers S
5 bytes
NOP PHP BIT $00 PLP	Clobbers nothing, requires nothing

13 cycles

4 bytes
PHA PHA PHP PLP	Clobbers S
5 bytes
NOP NOP NOP PHP PLP	Clobbers nothing, requires nothing

14 cycles

3 bytes
JSR @rts14	Requires @rts14
4 bytes
PHP PLP PHP PLP	Clobbers nothing, requires nothing

15 cycles

3 bytes
JSR @rts15	Requires @rts15
4 bytes
PHA JSR @rts12	Clobbers S; and requires @rts12
PHA PLA PLA PLA	Clobbers A, S, and Z&N
5 bytes
LDA $00 JSR @rts12	Clobbers A, and Z&N; and requires @rts12
PHA TSX PLA TXS PLA	Clobbers X, and Z&N
PHP TSX PLA TXS PLP	Clobbers A, and X
BIT $00 JSR @rts12	Clobbers Z&N, and V; and requires @rts12
STA @zptemp JSR @rts12	Requires @zptemp, and @rts12
NOP PHA PHA PHP PLP	Clobbers S
NOP $00 JSR @rts12	Requires @rts12, and support for unofficial opcodes
6 bytes
NOP NOP NOP NOP PHP PLP	Clobbers nothing, requires nothing

16 cycles

4 bytes
NOP JSR @rts14	Requires @rts14
PLA PLA PLA PLA	Clobbers A, S, and Z&N
5 bytes
NOP PHP PLP PHP PLP	Clobbers nothing, requires nothing

17 cycles

4 bytes
NOP JSR @rts15	Requires @rts15
PHA JSR @rts14	Clobbers S; and requires @rts14
5 bytes
LDA $00 JSR @rts14	Clobbers A, and Z&N; and requires @rts14
BIT $00 JSR @rts14	Clobbers Z&N, and V; and requires @rts14
STA @zptemp JSR @rts14	Requires @zptemp, and @rts14
PHA PHP PLP PHP PLP	Clobbers S
NOP $00 JSR @rts14	Requires @rts14, and support for unofficial opcodes
6 bytes
PHP PLP PHP BIT $00 PLP	Clobbers nothing, requires nothing

18 cycles

4 bytes
PHA JSR @rts15	Clobbers S; and requires @rts15
PLA JSR @rts14	Clobbers A, S, and Z&N; and requires @rts14
5 bytes
LDA $00 JSR @rts15	Clobbers A, and Z&N; and requires @rts15
BIT $00 JSR @rts15	Clobbers Z&N, and V; and requires @rts15
NOP NOP JSR @rts14	Requires @rts14
STA @zptemp JSR @rts15	Requires @zptemp, and @rts15
PHA PHA JSR @rts12	Clobbers S; and requires @rts12
NOP PLA PLA PLA PLA	Clobbers A, S, and Z&N
NOP $00 JSR @rts15	Requires @rts15, and support for unofficial opcodes
6 bytes
NOP NOP PHP PLP PHP PLP	Clobbers nothing, requires nothing

19 cycles

4 bytes
PLA JSR @rts15	Clobbers A, S, and Z&N; and requires @rts15
5 bytes
PHP PLP JSR @rts12	Requires @rts12
NOP NOP JSR @rts15	Requires @rts15
PHA PLA PLA PLA PLA	Clobbers A, S, and Z&N
NOP PHA JSR @rts14	Clobbers S; and requires @rts14
6 bytes
PHP ROL $00,X ROR $00,X PLP	Clobbers nothing, requires nothing

20 cycles

5 bytes
NOP PHA JSR @rts15	Clobbers S; and requires @rts15
PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
PHA PHA JSR @rts14	Clobbers S; and requires @rts14
6 bytes
NOP LDA $00 JSR @rts15	Clobbers A, and Z&N; and requires @rts15
TSX PLA PLA PLA PLA TXS	Clobbers A, X, and Z&N
NOP BIT $00 JSR @rts15	Clobbers Z&N, and V; and requires @rts15
NOP NOP NOP JSR @rts14	Requires @rts14
NOP STA @zptemp JSR @rts15	Requires @zptemp, and @rts15
PHA PHA PHP PLP PHP PLP	Clobbers S
NOP NOP $00 JSR @rts15	Requires @rts15, and support for unofficial opcodes
7 bytes
NOP NOP NOP PHP PLP PHP PLP	Clobbers nothing, requires nothing

21 cycles

5 bytes
LDY #4 @Y: DEY BNE @Y	Clobbers Y, and Z&N
LDX #4 @X: DEX BNE @X	Clobbers X, and Z&N
PHP PLP JSR @rts14	Requires @rts14
PHA PHA JSR @rts15	Clobbers S; and requires @rts15
6 bytes
PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

22 cycles

5 bytes
PHP PLP JSR @rts15	Requires @rts15
PLA PLA JSR @rts14	Clobbers A, S, and Z&N; and requires @rts14
6 bytes
LDY #3 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
LDX #3 @X: NOP DEX BNE @X	Clobbers X, and Z&N
PHA PHP PLP JSR @rts12	Clobbers S; and requires @rts12
NOP PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
NOP PHA PHA JSR @rts14	Clobbers S; and requires @rts14
7 bytes
PHP BIT $00 PLP JSR @rts12	Requires @rts12
PHP PHA TSX PLA TXS PLA PLP	Clobbers X
NOP NOP NOP NOP JSR @rts14	Requires @rts14
NOP PHA PHA PHP PLP PHP PLP	Clobbers S
SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA44 ;hides 'NOP zp' SBC #1 BMI @A	Clobbers A, Z&N, and C; and requires support for unofficial opcodes
8 bytes
NOP NOP NOP NOP PHP PLP PHP PLP	Clobbers nothing, requires nothing

23 cycles

5 bytes
PLA PLA JSR @rts15	Clobbers A, S, and Z&N; and requires @rts15
6 bytes
NOP LDX #4 @X: DEX BNE @X	Clobbers X, and Z&N
NOP LDY #4 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP PHP PLP JSR @rts14	Requires @rts14
NOP PHA PHA JSR @rts15	Clobbers S; and requires @rts15
PHA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
7 bytes
NOP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

24 cycles

6 bytes
JSR @rts12 JSR @rts12	Requires @rts12
NOP PHP PLP JSR @rts15	Requires @rts15
PLA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
PHA LDX #4 @X: DEX BNE @X	Clobbers X, S, and Z&N
PHA LDY #4 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
PHA PHP PLP JSR @rts14	Clobbers S; and requires @rts14
7 bytes
NOP LDX #3 @X: NOP DEX BNE @X	Clobbers X, and Z&N
NOP LDY #3 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
PHP BIT $00 PLP JSR @rts14	Requires @rts14
PHA PHP PLP PHP PLP PHP PLP	Clobbers S
SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm .byte $0C,$E6,@zptemp ;NOP abs; hides 'INC @zptemp' SBC #1 BMI @A	Clobbers A, Z&N, and C; and requires @zptemp, and support for unofficial opcodes
8 bytes
PHP PLP PHP PLP PHP BIT $00 PLP	Clobbers nothing, requires nothing

25 cycles

6 bytes
PHA PHP PLP JSR @rts15	Clobbers S; and requires @rts15
LDY #3 @Y: PHA DEY BNE @Y	Clobbers Y, S, and Z&N
LDX #3 @X: PHA DEX BNE @X	Clobbers X, S, and Z&N
PHA PLA PLA JSR @rts14	Clobbers A, S, and Z&N; and requires @rts14
7 bytes
PHP BIT $00 PLP JSR @rts15	Requires @rts15
LDY #2 @Y: PHP PLP DEY BNE @Y	Clobbers Y, and Z&N
LDX #2 @X: PHP PLP DEX BNE @X	Clobbers X, and Z&N
NOP NOP PHP PLP JSR @rts14	Requires @rts14
PHA PHA PHP PLP JSR @rts12	Clobbers S; and requires @rts12
NOP PHA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
8 bytes
NOP NOP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

26 cycles

5 bytes
LDY #5 @Y: DEY BNE @Y	Clobbers Y, and Z&N
LDX #5 @X: DEX BNE @X	Clobbers X, and Z&N
6 bytes
JSR @rts12 JSR @rts14	Requires @rts12, and @rts14
PHA PLA PLA JSR @rts15	Clobbers A, S, and Z&N; and requires @rts15
PLA PLA PLA JSR @rts14	Clobbers A, S, and Z&N; and requires @rts14
7 bytes
NOP JSR @rts12 JSR @rts12	Requires @rts12
NOP NOP PHP PLP JSR @rts15	Requires @rts15
ROL $00,X ROR $00,X JSR @rts14	Clobbers Z&N; and requires @rts14
NOP PLA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
NOP PHA PHP PLP JSR @rts14	Clobbers S; and requires @rts14
SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $2808 ;hides 'PHP' and 'PLP'; reads from $2000 SBC #1 BMI @A	Clobbers A, Z&N, and C; and requires support for unofficial opcodes
8 bytes
PHP PLP PHP ROL $00,X ROR $00,X PLP	Clobbers nothing, requires nothing

27 cycles

6 bytes
JSR @rts12 JSR @rts15	Requires @rts12, and @rts15
PLA PLA PLA JSR @rts15	Clobbers A, S, and Z&N; and requires @rts15
7 bytes
ROL $00,X ROR $00,X JSR @rts15	Clobbers Z&N; and requires @rts15
PHA JSR @rts12 JSR @rts12	Clobbers S; and requires @rts12
NOP PHA PHP PLP JSR @rts15	Clobbers S; and requires @rts15
PHA PLA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
NOP LDX #3 @X: PHA DEX BNE @X	Clobbers X, S, and Z&N
NOP LDY #3 @Y: PHA DEY BNE @Y	Clobbers Y, S, and Z&N
PHA PHA PHP PLP JSR @rts14	Clobbers S; and requires @rts14
8 bytes
NOP PHP BIT $00 PLP JSR @rts15	Requires @rts15
LDA $00 JSR @rts12 JSR @rts12	Clobbers A, and Z&N; and requires @rts12
PHA TSX PLA PLA PLA PLA TXS PLA	Clobbers X, and Z&N
NOP LDY #2 @Y: PHP PLP DEY BNE @Y	Clobbers Y, and Z&N
PHP TSX PLA PLA PLA PLA TXS PLP	Clobbers A, and X
BIT $00 JSR @rts12 JSR @rts12	Clobbers Z&N, and V; and requires @rts12
NOP NOP NOP PHP PLP JSR @rts14	Requires @rts14
STA @zptemp JSR @rts12 JSR @rts12	Requires @zptemp, and @rts12
PHA PHA PHP PLP PHP PLP PHP PLP	Clobbers S
NOP $00 JSR @rts12 JSR @rts12	Requires @rts12, and support for unofficial opcodes
SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EAEA ;hides two 'NOP's NOP SBC #1 BMI @A	Clobbers A, Z&N, and C; and requires support for unofficial opcodes
9 bytes
NOP NOP NOP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

28 cycles

6 bytes
NOP LDX #5 @X: DEX BNE @X	Clobbers X, and Z&N
NOP LDY #5 @Y: DEY BNE @Y	Clobbers Y, and Z&N
JSR @rts14 JSR @rts14	Requires @rts14
7 bytes
PHP LDX #4 @X: DEX BNE @X PLP	Clobbers X
PHP LDY #4 @Y: DEY BNE @Y PLP	Clobbers Y
SEC LDA #5 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
PHA PHA PHP PLP JSR @rts15	Clobbers S; and requires @rts15
PLA PLA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
8 bytes
PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

29 cycles

6 bytes
LDX #4 @X: NOP DEX BNE @X	Clobbers X, and Z&N
LDY #4 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
JSR @rts14 JSR @rts15	Requires @rts14, and @rts15
7 bytes
PHP PLP PHP PLP JSR @rts15	Requires @rts15
PHA JSR @rts12 JSR @rts14	Clobbers S; and requires @rts12, and @rts14
PHA PLA PLA PLA JSR @rts14	Clobbers A, S, and Z&N; and requires @rts14
8 bytes
PHP LDY #3 @Y: NOP DEY BNE @Y PLP	Clobbers Y
PHP LDX #3 @X: NOP DEX BNE @X PLP	Clobbers X
LDA $00 JSR @rts12 JSR @rts14	Clobbers A, and Z&N; and requires @rts12, and @rts14
BIT $00 JSR @rts12 JSR @rts14	Clobbers Z&N, and V; and requires @rts12, and @rts14
STA @zptemp JSR @rts12 JSR @rts14	Requires @zptemp, @rts12, and @rts14
NOP PHA JSR @rts12 JSR @rts12	Clobbers S; and requires @rts12
NOP PHA PLA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
NOP PHA PHA PHP PLP JSR @rts14	Clobbers S; and requires @rts14
NOP $00 JSR @rts12 JSR @rts14	Requires @rts12, @rts14, and support for unofficial opcodes
9 bytes
PHP PLP PHP BIT $00 PLP JSR @rts12	Requires @rts12
NOP NOP NOP NOP PHP PLP JSR @rts14	Requires @rts14
NOP PHA PHA PHP PLP PHP PLP PHP PLP	Clobbers S
PHP SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA44 ;hides 'NOP zp' SBC #1 BMI @A PLP	Clobbers A; and requires support for unofficial opcodes
PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA44 ;hides 'NOP zp' SBC #1 BMI @A PLA	Clobbers Z&N, and C; and requires support for unofficial opcodes
10 bytes
NOP NOP NOP NOP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

30 cycles

6 bytes
JSR @rts15 JSR @rts15	Requires @rts15
PLA LDX #5 @X: DEX BNE @X	Clobbers A, X, S, and Z&N
PLA LDY #5 @Y: DEY BNE @Y	Clobbers A, Y, S, and Z&N
7 bytes
NOP NOP LDY #5 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP NOP LDX #5 @X: DEX BNE @X	Clobbers X, and Z&N
NOP JSR @rts14 JSR @rts14	Requires @rts14
8 bytes
NOP PHP LDY #4 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #4 @X: DEX BNE @X PLP	Clobbers X
NOP SEC LDA #5 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
PHA PHA JSR @rts12 JSR @rts12	Clobbers S; and requires @rts12
NOP PLA PLA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
9 bytes
NOP PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

31 cycles

5 bytes
LDX #6 @X: DEX BNE @X	Clobbers X, and Z&N
LDY #6 @Y: DEY BNE @Y	Clobbers Y, and Z&N
7 bytes
NOP JSR @rts14 JSR @rts15	Requires @rts14, and @rts15
PLA PLA PLA PLA JSR @rts15	Clobbers A, S, and Z&N; and requires @rts15
PHA JSR @rts14 JSR @rts14	Clobbers S; and requires @rts14
8 bytes
PHP PLP JSR @rts12 JSR @rts12	Requires @rts12
NOP PHP PLP PHP PLP JSR @rts15	Requires @rts15
SEC LDA #4 @A: NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
LDA $00 JSR @rts14 JSR @rts14	Clobbers A, and Z&N; and requires @rts14
BIT $00 JSR @rts14 JSR @rts14	Clobbers Z&N, and V; and requires @rts14
STA @zptemp JSR @rts14 JSR @rts14	Requires @zptemp, and @rts14
PHA PLA PLA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
PHA PHP LDY #4 @Y: DEY BNE @Y PLP	Clobbers Y, and S
PHA PHP LDX #4 @X: DEX BNE @X PLP	Clobbers X, and S
NOP $00 JSR @rts14 JSR @rts14	Requires @rts14, and support for unofficial opcodes
9 bytes
NOP PHP LDX #3 @X: NOP DEX BNE @X PLP	Clobbers X
NOP PHP LDY #3 @Y: NOP DEY BNE @Y PLP	Clobbers Y
JMP *+3 JSR @rts14 JSR @rts14	Requires @rts14
PHA PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers S
PHP SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm .byte $0C,$E6,@zptemp ;NOP abs; hides 'INC @zptemp' SBC #1 BMI @A PLP	Clobbers A; and requires @zptemp, and support for unofficial opcodes
PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm .byte $0C,$E6,@zptemp ;NOP abs; hides 'INC @zptemp' SBC #1 BMI @A PLA	Clobbers Z&N, and C; and requires @zptemp, and support for unofficial opcodes
10 bytes
PHP PLP PHP PLP PHP PLP PHP BIT $00 PLP	Clobbers nothing, requires nothing

32 cycles

7 bytes
NOP JSR @rts15 JSR @rts15	Requires @rts15
PHA LDX #4 @X: NOP DEX BNE @X	Clobbers X, S, and Z&N
PHA LDY #4 @Y: NOP DEY BNE @Y	Clobbers Y, S, and Z&N
PLA JSR @rts14 JSR @rts14	Clobbers A, S, and Z&N; and requires @rts14
8 bytes
NOP NOP NOP LDY #5 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP NOP NOP LDX #5 @X: DEX BNE @X	Clobbers X, and Z&N
NOP NOP JSR @rts14 JSR @rts14	Requires @rts14
PLA PLA PLA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
9 bytes
TYA PHA LDY #4 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
PHP LDX #2 @X: PHP PLP DEX BNE @X PLP	Clobbers X
PHP LDY #2 @Y: PHP PLP DEY BNE @Y PLP	Clobbers Y
NOP PHA PHA JSR @rts12 JSR @rts12	Clobbers S; and requires @rts12
10 bytes
NOP NOP PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

33 cycles

6 bytes
NOP LDY #6 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP LDX #6 @X: DEX BNE @X	Clobbers X, and Z&N
7 bytes
PHP LDY #5 @Y: DEY BNE @Y PLP	Clobbers Y
PHP LDX #5 @X: DEX BNE @X PLP	Clobbers X
SEC LDA #6 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
PHA JSR @rts15 JSR @rts15	Clobbers S; and requires @rts15
8 bytes
LDA $00 JSR @rts15 JSR @rts15	Clobbers A, and Z&N; and requires @rts15
BIT $00 JSR @rts15 JSR @rts15	Clobbers Z&N, and V; and requires @rts15
PHP PLP JSR @rts12 JSR @rts14	Requires @rts12, and @rts14
NOP NOP JSR @rts14 JSR @rts15	Requires @rts14, and @rts15
STA @zptemp JSR @rts15 JSR @rts15	Requires @zptemp, and @rts15
NOP PHA JSR @rts14 JSR @rts14	Clobbers S; and requires @rts14
NOP $00 JSR @rts15 JSR @rts15	Requires @rts15, and support for unofficial opcodes
9 bytes
NOP PHP PLP JSR @rts12 JSR @rts12	Requires @rts12
JMP *+3 JSR @rts15 JSR @rts15	Requires @rts15
JSR @rts14 PHP ROL $00,X ROR $00,X PLP	Requires @rts14
NOP PHA PLA PLA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
PHP SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $2808 ;hides 'PHP' and 'PLP'; reads from $2000 SBC #1 BMI @A PLP	Clobbers A; and requires support for unofficial opcodes
PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $2808 ;hides 'PHP' and 'PLP'; reads from $2000 SBC #1 BMI @A PLA	Clobbers Z&N, and C; and requires support for unofficial opcodes
10 bytes
PHP PLP PHP PLP PHP ROL $00,X ROR $00,X PLP	Clobbers nothing, requires nothing

34 cycles

6 bytes
PHA LDX #6 @X: DEX BNE @X	Clobbers X, S, and Z&N
PHA LDY #6 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
7 bytes
LDA $00 LDX #6 @X: DEX BNE @X	Clobbers A, X, and Z&N
LDA $00 LDY #6 @Y: DEY BNE @Y	Clobbers A, Y, and Z&N
BIT $00 LDX #6 @X: DEX BNE @X	Clobbers X, Z&N, and V
BIT $00 LDY #6 @Y: DEY BNE @Y	Clobbers Y, Z&N, and V
STA @zptemp LDX #6 @X: DEX BNE @X	Clobbers X, and Z&N; and requires @zptemp
STA @zptemp LDY #6 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires @zptemp
PLA JSR @rts15 JSR @rts15	Clobbers A, S, and Z&N; and requires @rts15
NOP $00 LDY #6 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires support for unofficial opcodes
NOP $00 LDX #6 @X: DEX BNE @X	Clobbers X, and Z&N; and requires support for unofficial opcodes
8 bytes
NOP NOP JSR @rts15 JSR @rts15	Requires @rts15
JMP *+3 LDY #6 @Y: DEY BNE @Y	Clobbers Y, and Z&N
JMP *+3 LDX #6 @X: DEX BNE @X	Clobbers X, and Z&N
PHA PHA JSR @rts14 JSR @rts14	Clobbers S; and requires @rts14
9 bytes
NOP NOP NOP JSR @rts14 JSR @rts14	Requires @rts14
PHA PHP PLP JSR @rts12 JSR @rts12	Clobbers S; and requires @rts12
NOP PLA PLA PLA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
PHA PHA PHP LDX #4 @X: DEX BNE @X PLP	Clobbers X, and S
PHA PHA PHP LDY #4 @Y: DEY BNE @Y PLP	Clobbers Y, and S
SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA ;hides 'NOP' PHP PLP SBC #1 BMI @A	Clobbers A, Z&N, and C; and requires support for unofficial opcodes
10 bytes
PHP BIT $00 PLP JSR @rts12 JSR @rts12	Requires @rts12
NOP TYA PHA LDY #4 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP PHP LDY #2 @Y: PHP PLP DEY BNE @Y PLP	Clobbers Y
PHP PHA TSX PLA PLA PLA PLA TXS PLA PLP	Clobbers X
PHA PHA PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers S
PHP SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EAEA ;hides two 'NOP's NOP SBC #1 BMI @A PLP	Clobbers A; and requires support for unofficial opcodes
PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EAEA ;hides two 'NOP's NOP SBC #1 BMI @A PLA	Clobbers Z&N, and C; and requires support for unofficial opcodes
11 bytes
NOP NOP NOP PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

35 cycles

6 bytes
PLA LDY #6 @Y: DEY BNE @Y	Clobbers A, Y, S, and Z&N
PLA LDX #6 @X: DEX BNE @X	Clobbers A, X, S, and Z&N
7 bytes
NOP NOP LDX #6 @X: DEX BNE @X	Clobbers X, and Z&N
NOP NOP LDY #6 @Y: DEY BNE @Y	Clobbers Y, and Z&N
8 bytes
NOP PHP LDY #5 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #5 @X: DEX BNE @X PLP	Clobbers X
NOP SEC LDA #6 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
PHP PLP JSR @rts14 JSR @rts14	Requires @rts14
NOP PHA JSR @rts15 JSR @rts15	Clobbers S; and requires @rts15
9 bytes
PHP SEC LDA #5 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #5 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
NOP BIT $00 JSR @rts15 JSR @rts15	Clobbers Z&N, and V; and requires @rts15
NOP STA @zptemp JSR @rts15 JSR @rts15	Requires @zptemp, and @rts15
NOP NOP $00 JSR @rts15 JSR @rts15	Requires @rts15, and support for unofficial opcodes
10 bytes
PHP PLP PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

36 cycles

5 bytes
LDY #7 @Y: DEY BNE @Y	Clobbers Y, and Z&N
LDX #7 @X: DEX BNE @X	Clobbers X, and Z&N
8 bytes
PHP LDX #4 @X: NOP DEX BNE @X PLP	Clobbers X
PHP LDY #4 @Y: NOP DEY BNE @Y PLP	Clobbers Y
PHP PLP JSR @rts14 JSR @rts15	Requires @rts14, and @rts15
PHA PHA JSR @rts15 JSR @rts15	Clobbers S; and requires @rts15
PHA SEC LDA #6 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
PLA PLA JSR @rts14 JSR @rts14	Clobbers A, S, and Z&N; and requires @rts14
9 bytes
JSR @rts12 JSR @rts12 JSR @rts12	Requires @rts12
NOP NOP NOP JSR @rts15 JSR @rts15	Requires @rts15
LDA $00 SEC LDA #6 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
PLA PLA PLA PLA PLA PLA PLA PLA PLA	Clobbers A, S, and Z&N
NOP PHA PHA JSR @rts14 JSR @rts14	Clobbers S; and requires @rts14
10 bytes
NOP NOP NOP NOP JSR @rts14 JSR @rts14	Requires @rts14
PHA PHP SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $2808 ;hides 'PHP' and 'PLP'; reads from $2000 SBC #1 BMI @A PLP	Clobbers A, and S; and requires support for unofficial opcodes
PHA PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $2808 ;hides 'PHP' and 'PLP'; reads from $2000 SBC #1 BMI @A PLA	Clobbers S, Z&N, and C; and requires support for unofficial opcodes
11 bytes
TYA PHA LDY #2 @Y: PHP PLP DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP PHA PHA PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers S
PHP PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA44 ;hides 'NOP zp' SBC #1 BMI @A PLA PLP	Requires support for unofficial opcodes
12 bytes
NOP NOP NOP NOP PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

37 cycles

6 bytes
LDY #4 @Y: PLA DEY BNE @Y	Clobbers A, Y, S, and Z&N
LDX #4 @X: PLA DEX BNE @X	Clobbers A, X, S, and Z&N
7 bytes
LDX #3 @X: PHP PLP DEX BNE @X	Clobbers X, and Z&N
LDY #3 @Y: PHP PLP DEY BNE @Y	Clobbers Y, and Z&N
8 bytes
PHP PLP JSR @rts15 JSR @rts15	Requires @rts15
PLA SEC LDA #6 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
TYA PHA LDY #5 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP PHP LDX #5 @X: DEX BNE @X PLP	Clobbers X
NOP NOP PHP LDY #5 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP PLP JSR @rts14 JSR @rts14	Requires @rts14
10 bytes
NOP PHP SEC LDA #5 @A: SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #5 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
PHA PHA PHP PLP JSR @rts12 JSR @rts12	Clobbers S; and requires @rts12
11 bytes
NOP PHP PLP PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

38 cycles

6 bytes
NOP LDY #7 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP LDX #7 @X: DEX BNE @X	Clobbers X, and Z&N
7 bytes
PHP LDY #6 @Y: DEY BNE @Y PLP	Clobbers Y
PHP LDX #6 @X: DEX BNE @X PLP	Clobbers X
SEC LDA #7 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
8 bytes
PLA PLA JSR @rts15 JSR @rts15	Clobbers A, S, and Z&N; and requires @rts15
9 bytes
JSR @rts12 JSR @rts12 JSR @rts14	Requires @rts12, and @rts14
NOP PHP PLP JSR @rts14 JSR @rts15	Requires @rts14, and @rts15
NOP PHA PHA JSR @rts15 JSR @rts15	Clobbers S; and requires @rts15
PHA PHP PLP JSR @rts14 JSR @rts14	Clobbers S; and requires @rts14
10 bytes
NOP JSR @rts12 JSR @rts12 JSR @rts12	Requires @rts12
NOP NOP NOP NOP JSR @rts15 JSR @rts15	Requires @rts15
PHP SEC LDA #4 @A: NOP SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #4 @A: NOP SBC #1 BNE @A PLA	Clobbers Z&N, and C
PHP BIT $00 PLP JSR @rts14 JSR @rts14	Requires @rts14
11 bytes
PHA PHP PLP PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers S
PHP PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm .byte $0C,$E6,@zptemp ;NOP abs; hides 'INC @zptemp' SBC #1 BMI @A PLA PLP	Requires @zptemp, and support for unofficial opcodes
12 bytes
PHP PLP PHP PLP PHP PLP PHP PLP PHP BIT $00 PLP	Clobbers nothing, requires nothing

39 cycles

6 bytes
PHA LDX #7 @X: DEX BNE @X	Clobbers X, S, and Z&N
PHA LDY #7 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
7 bytes
LDA $00 LDY #7 @Y: DEY BNE @Y	Clobbers A, Y, and Z&N
LDA $00 LDX #7 @X: DEX BNE @X	Clobbers A, X, and Z&N
BIT $00 LDY #7 @Y: DEY BNE @Y	Clobbers Y, Z&N, and V
BIT $00 LDX #7 @X: DEX BNE @X	Clobbers X, Z&N, and V
STA @zptemp LDY #7 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires @zptemp
STA @zptemp LDX #7 @X: DEX BNE @X	Clobbers X, and Z&N; and requires @zptemp
NOP $00 LDX #7 @X: DEX BNE @X	Clobbers X, and Z&N; and requires support for unofficial opcodes
NOP $00 LDY #7 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires support for unofficial opcodes
8 bytes
JMP *+3 LDX #7 @X: DEX BNE @X	Clobbers X, and Z&N
JMP *+3 LDY #7 @Y: DEY BNE @Y	Clobbers Y, and Z&N
9 bytes
NOP PHP PLP JSR @rts15 JSR @rts15	Requires @rts15
SEC LDA #3 @A: PHP PLP SBC #1 BNE @A	Clobbers A, Z&N, and C
PHA PHP LDY #4 @Y: NOP DEY BNE @Y PLP	Clobbers Y, and S
PHA PHP LDX #4 @X: NOP DEX BNE @X PLP	Clobbers X, and S
PHA PLA PLA JSR @rts14 JSR @rts14	Clobbers A, S, and Z&N; and requires @rts14
10 bytes
NOP TYA PHA LDY #5 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP NOP PHP LDX #5 @X: DEX BNE @X PLP	Clobbers X
NOP NOP NOP PHP LDY #5 @Y: DEY BNE @Y PLP	Clobbers Y
NOP NOP PHP PLP JSR @rts14 JSR @rts14	Requires @rts14
PHA JSR @rts12 JSR @rts12 JSR @rts12	Clobbers S; and requires @rts12
11 bytes
PHA TYA PHA LDY #4 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP NOP PHP SEC LDA #5 @A: SBC #1 BNE @A PLP	Clobbers A
STA @zptemp JSR @rts12 JSR @rts12 JSR @rts12	Requires @zptemp, and @rts12
NOP $00 JSR @rts12 JSR @rts12 JSR @rts12	Requires @rts12, and support for unofficial opcodes
12 bytes
NOP NOP PHP PLP PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

40 cycles

6 bytes
PLA LDX #7 @X: DEX BNE @X	Clobbers A, X, S, and Z&N
PLA LDY #7 @Y: DEY BNE @Y	Clobbers A, Y, S, and Z&N
7 bytes
NOP NOP LDY #7 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP NOP LDX #7 @X: DEX BNE @X	Clobbers X, and Z&N
8 bytes
NOP PHP LDY #6 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #6 @X: DEX BNE @X PLP	Clobbers X
NOP SEC LDA #7 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #6 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #6 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
JSR @rts12 JSR @rts14 JSR @rts14	Requires @rts12, and @rts14
PHA PHP PLP JSR @rts15 JSR @rts15	Clobbers S; and requires @rts15
10 bytes
PHP BIT $00 PLP JSR @rts15 JSR @rts15	Requires @rts15
ROL $00,X ROR $00,X JSR @rts14 JSR @rts14	Clobbers Z&N; and requires @rts14
NOP PHA PHP PLP JSR @rts14 JSR @rts14	Clobbers S; and requires @rts14
11 bytes
NOP NOP JSR @rts12 JSR @rts12 JSR @rts12	Requires @rts12
NOP PHP BIT $00 PLP JSR @rts14 JSR @rts14	Requires @rts14
PHP PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $2808 ;hides 'PHP' and 'PLP'; reads from $2000 SBC #1 BMI @A PLA PLP	Requires support for unofficial opcodes
12 bytes
PHP PLP PHP PLP PHP PLP PHP ROL $00,X ROR $00,X PLP	Clobbers nothing, requires nothing

41 cycles

5 bytes
LDX #8 @X: DEX BNE @X	Clobbers X, and Z&N
LDY #8 @Y: DEY BNE @Y	Clobbers Y, and Z&N
8 bytes
PHA PHP LDX #6 @X: DEX BNE @X PLP	Clobbers X, and S
PHA PHP LDY #6 @Y: DEY BNE @Y PLP	Clobbers Y, and S
PHA SEC LDA #7 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
PHP BIT $00 LDY #6 @Y: DEY BNE @Y PLP	Clobbers Y
PHP BIT $00 LDX #6 @X: DEX BNE @X PLP	Clobbers X
LDA $00 SEC LDA #7 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
JSR @rts12 JSR @rts14 JSR @rts15	Requires @rts12, @rts14, and @rts15
PHA PLA PLA JSR @rts15 JSR @rts15	Clobbers A, S, and Z&N; and requires @rts15
10 bytes
NOP NOP PHP PLP JSR @rts15 JSR @rts15	Requires @rts15
PLA TYA PHA LDY #5 @Y: DEY BNE @Y PLA TAY	Clobbers A, S, and Z&N
PHA PHA PHP PLP JSR @rts14 JSR @rts14	Clobbers S; and requires @rts14
11 bytes
NOP NOP TYA PHA LDY #5 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP NOP PHP PLP JSR @rts14 JSR @rts14	Requires @rts14
NOP PHA JSR @rts12 JSR @rts12 JSR @rts12	Clobbers S; and requires @rts12
PHA PHP SEC LDA #4 @A: NOP SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #4 @A: NOP SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
PHP SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA ;hides 'NOP' PHP PLP SBC #1 BMI @A PLP	Clobbers A; and requires support for unofficial opcodes
PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA ;hides 'NOP' PHP PLP SBC #1 BMI @A PLA	Clobbers Z&N, and C; and requires support for unofficial opcodes
12 bytes
PHP PLP PHP BIT $00 PLP JSR @rts12 JSR @rts12	Requires @rts12
NOP PHA TYA PHA LDY #4 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP NOP NOP PHP SEC LDA #5 @A: SBC #1 BNE @A PLP	Clobbers A
PHA PHA PHP PLP PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers S
PHP PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EAEA ;hides two 'NOP's NOP SBC #1 BMI @A PLA PLP	Requires support for unofficial opcodes
13 bytes
NOP NOP NOP PHP PLP PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

42 cycles

7 bytes
PHA PHA LDX #7 @X: DEX BNE @X	Clobbers X, S, and Z&N
PHA PHA LDY #7 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
8 bytes
NOP NOP NOP LDX #7 @X: DEX BNE @X	Clobbers X, and Z&N
NOP NOP NOP LDY #7 @Y: DEY BNE @Y	Clobbers Y, and Z&N
PLA SEC LDA #7 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
JSR @rts12 JSR @rts15 JSR @rts15	Requires @rts12, and @rts15
TYA PHA LDY #6 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP PHP LDX #6 @X: DEX BNE @X PLP	Clobbers X
NOP NOP PHP LDY #6 @Y: DEY BNE @Y PLP	Clobbers Y
JSR @rts14 JSR @rts14 JSR @rts14	Requires @rts14
10 bytes
ROL $00,X ROR $00,X JSR @rts15 JSR @rts15	Clobbers Z&N; and requires @rts15
NOP PHP SEC LDA #6 @A: SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #6 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
NOP PHA PHP PLP JSR @rts15 JSR @rts15	Clobbers S; and requires @rts15
11 bytes
PHP PHA SEC LDA #5 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

43 cycles

6 bytes
LDX #6 @X: NOP DEX BNE @X	Clobbers X, and Z&N
LDY #6 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
7 bytes
PHP LDX #7 @X: DEX BNE @X PLP	Clobbers X
PHP LDY #7 @Y: DEY BNE @Y PLP	Clobbers Y
SEC LDA #8 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
JSR @rts14 JSR @rts14 JSR @rts15	Requires @rts14, and @rts15
10 bytes
PHA PHA PHP PLP JSR @rts15 JSR @rts15	Clobbers S; and requires @rts15
PHA PHP SEC LDA #6 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #6 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
PHA JSR @rts12 JSR @rts14 JSR @rts14	Clobbers S; and requires @rts12, and @rts14
11 bytes
PHP PLP JSR @rts12 JSR @rts12 JSR @rts12	Requires @rts12
NOP NOP NOP PHP PLP JSR @rts15 JSR @rts15	Requires @rts15
PHP LDA $00 SEC LDA #6 @A: SBC #1 BNE @A PLP	Clobbers A
PHA LDA $00 SEC LDA #6 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
NOP PHA PHA PHP PLP JSR @rts14 JSR @rts14	Clobbers S; and requires @rts14
12 bytes
NOP NOP NOP NOP PHP PLP JSR @rts14 JSR @rts14	Requires @rts14
PHA PHP PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $2808 ;hides 'PHP' and 'PLP'; reads from $2000 SBC #1 BMI @A PLA PLP	Clobbers S; and requires support for unofficial opcodes
13 bytes
PHA TYA PHA LDY #2 @Y: PHP PLP DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP PHA PHA PHP PLP PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers S
PHP PLP PHP PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA44 ;hides 'NOP zp' SBC #1 BMI @A PLA PLP	Requires support for unofficial opcodes
14 bytes
NOP NOP NOP NOP PHP PLP PHP PLP PHP PLP PHP PLP PHP PLP	Clobbers nothing, requires nothing

44 cycles

6 bytes
PHA LDY #8 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
PHA LDX #8 @X: DEX BNE @X	Clobbers X, S, and Z&N
7 bytes
LDA $00 LDY #8 @Y: DEY BNE @Y	Clobbers A, Y, and Z&N
LDA $00 LDX #8 @X: DEX BNE @X	Clobbers A, X, and Z&N
BIT $00 LDY #8 @Y: DEY BNE @Y	Clobbers Y, Z&N, and V
BIT $00 LDX #8 @X: DEX BNE @X	Clobbers X, Z&N, and V
STA @zptemp LDY #8 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires @zptemp
STA @zptemp LDX #8 @X: DEX BNE @X	Clobbers X, and Z&N; and requires @zptemp
NOP $00 LDY #8 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires support for unofficial opcodes
NOP $00 LDX #8 @X: DEX BNE @X	Clobbers X, and Z&N; and requires support for unofficial opcodes
8 bytes
JMP *+3 LDY #8 @Y: DEY BNE @Y	Clobbers Y, and Z&N
JMP *+3 LDX #8 @X: DEX BNE @X	Clobbers X, and Z&N
9 bytes
PHP LDY #3 @Y: PHP PLP DEY BNE @Y PLP	Clobbers Y
PHP LDX #3 @X: PHP PLP DEX BNE @X PLP	Clobbers X
JSR @rts14 JSR @rts15 JSR @rts15	Requires @rts14, and @rts15
NOP PLA SEC LDA #7 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
10 bytes
PHP PLP PHP PLP JSR @rts15 JSR @rts15	Requires @rts15
NOP TYA PHA LDY #6 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP JSR @rts14 JSR @rts14 JSR @rts14	Requires @rts14
11 bytes
PHA TYA PHA LDY #5 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP NOP PHP SEC LDA #6 @A: SBC #1 BNE @A PLP	Clobbers A
12 bytes
NOP PHP PHA SEC LDA #5 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

45 cycles

6 bytes
PLA LDY #8 @Y: DEY BNE @Y	Clobbers A, Y, S, and Z&N
PLA LDX #8 @X: DEX BNE @X	Clobbers A, X, S, and Z&N
7 bytes
NOP LDY #6 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
NOP LDX #6 @X: NOP DEX BNE @X	Clobbers X, and Z&N
8 bytes
NOP PHP LDY #7 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #7 @X: DEX BNE @X PLP	Clobbers X
SEC LDA #6 @A: NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
JSR @rts15 JSR @rts15 JSR @rts15	Requires @rts15
PHP SEC LDA #7 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #7 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
10 bytes
PHA JSR @rts14 JSR @rts14 JSR @rts14	Clobbers S; and requires @rts14
11 bytes
PHP PLP JSR @rts12 JSR @rts12 JSR @rts14	Requires @rts12, and @rts14
BIT $00 JSR @rts14 JSR @rts14 JSR @rts14	Clobbers Z&N, and V; and requires @rts14
STA @zptemp JSR @rts14 JSR @rts14 JSR @rts14	Requires @zptemp, and @rts14
NOP $00 JSR @rts14 JSR @rts14 JSR @rts14	Requires @rts14, and support for unofficial opcodes
12 bytes
PHP PHA SEC LDA #4 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

46 cycles

5 bytes
LDX #9 @X: DEX BNE @X	Clobbers X, and Z&N
LDY #9 @Y: DEY BNE @Y	Clobbers Y, and Z&N
8 bytes
PHA PHP LDX #7 @X: DEX BNE @X PLP	Clobbers X, and S
PHA PHP LDY #7 @Y: DEY BNE @Y PLP	Clobbers Y, and S
PHA SEC LDA #8 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
PHP BIT $00 LDX #7 @X: DEX BNE @X PLP	Clobbers X
PHP BIT $00 LDY #7 @Y: DEY BNE @Y PLP	Clobbers Y
LDA $00 SEC LDA #8 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
NOP JSR @rts14 JSR @rts15 JSR @rts15	Requires @rts14, and @rts15
PLA TYA PHA LDY #6 @Y: DEY BNE @Y PLA TAY	Clobbers A, S, and Z&N
11 bytes
NOP PHP PLP PHP PLP JSR @rts15 JSR @rts15	Requires @rts15
PHP SEC LDA #3 @A: PHP PLP SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #3 @A: PHP PLP SBC #1 BNE @A PLA	Clobbers Z&N, and C
NOP NOP JSR @rts14 JSR @rts14 JSR @rts14	Requires @rts14
12 bytes
NOP PHA TYA PHA LDY #5 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
PHA PHP PLP JSR @rts12 JSR @rts12 JSR @rts12	Clobbers S; and requires @rts12
13 bytes
NOP NOP PHP PHA SEC LDA #5 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

47 cycles

7 bytes
PHA PHA LDX #8 @X: DEX BNE @X	Clobbers X, S, and Z&N
PHA PHA LDY #8 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
8 bytes
NOP NOP LDX #6 @X: NOP DEX BNE @X	Clobbers X, and Z&N
NOP NOP LDY #6 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
PLA SEC LDA #8 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
TYA PHA LDY #7 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP PHP LDX #7 @X: DEX BNE @X PLP	Clobbers X
NOP NOP PHP LDY #7 @Y: DEY BNE @Y PLP	Clobbers Y
10 bytes
NOP JSR @rts15 JSR @rts15 JSR @rts15	Requires @rts15
NOP PHP SEC LDA #7 @A: SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #7 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PHA SEC LDA #6 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

48 cycles

6 bytes
NOP LDX #9 @X: DEX BNE @X	Clobbers X, and Z&N
NOP LDY #9 @Y: DEY BNE @Y	Clobbers Y, and Z&N
7 bytes
PHP LDX #8 @X: DEX BNE @X PLP	Clobbers X
PHP LDY #8 @Y: DEY BNE @Y PLP	Clobbers Y
SEC LDA #9 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PHA JSR @rts15 JSR @rts15 JSR @rts15	Clobbers S; and requires @rts15
PHA PHP SEC LDA #7 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #7 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
11 bytes
PHP LDA $00 SEC LDA #7 @A: SBC #1 BNE @A PLP	Clobbers A
PHA LDA $00 SEC LDA #7 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
BIT $00 JSR @rts15 JSR @rts15 JSR @rts15	Clobbers Z&N, and V; and requires @rts15
NOP NOP JSR @rts14 JSR @rts15 JSR @rts15	Requires @rts14, and @rts15
STA @zptemp JSR @rts15 JSR @rts15 JSR @rts15	Requires @zptemp, and @rts15
PHA PHA JSR @rts14 JSR @rts14 JSR @rts14	Clobbers S; and requires @rts14
NOP $00 JSR @rts15 JSR @rts15 JSR @rts15	Requires @rts15, and support for unofficial opcodes
12 bytes
JSR @rts12 JSR @rts12 JSR @rts12 JSR @rts12	Requires @rts12
JMP *+3 JSR @rts15 JSR @rts15 JSR @rts15	Requires @rts15
NOP NOP NOP JSR @rts14 JSR @rts14 JSR @rts14	Requires @rts14
13 bytes
NOP NOP PHA TYA PHA LDY #5 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
PHA PHP PHA SEC LDA #4 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers S
PHP PHA SEC LDA #130 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA ;hides 'NOP' PHP PLP SBC #1 BMI @A PLA PLP	Requires support for unofficial opcodes
14 bytes
NOP NOP NOP PHP PHA SEC LDA #5 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

49 cycles

6 bytes
LDY #6 @Y: PHA DEY BNE @Y	Clobbers Y, S, and Z&N
LDX #6 @X: PHA DEX BNE @X	Clobbers X, S, and Z&N
7 bytes
LDY #4 @Y: PHP PLP DEY BNE @Y	Clobbers Y, and Z&N
LDX #4 @X: PHP PLP DEX BNE @X	Clobbers X, and Z&N
9 bytes
PHA PHA PHP LDX #7 @X: DEX BNE @X PLP	Clobbers X, and S
PHA PHA PHP LDY #7 @Y: DEY BNE @Y PLP	Clobbers Y, and S
NOP PLA SEC LDA #8 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
10 bytes
NOP TYA PHA LDY #7 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP NOP PHP LDY #7 @Y: DEY BNE @Y PLP	Clobbers Y
NOP NOP NOP PHP LDX #7 @X: DEX BNE @X PLP	Clobbers X
11 bytes
NOP NOP JSR @rts15 JSR @rts15 JSR @rts15	Requires @rts15
PHA TYA PHA LDY #6 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP NOP PHP SEC LDA #7 @A: SBC #1 BNE @A PLP	Clobbers A
PHP PLP JSR @rts14 JSR @rts14 JSR @rts14	Requires @rts14
12 bytes
NOP PHP PHA SEC LDA #6 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

50 cycles

6 bytes
LDX #7 @X: NOP DEX BNE @X	Clobbers X, and Z&N
LDY #7 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
8 bytes
PHP LDX #6 @X: NOP DEX BNE @X PLP	Clobbers X
PHP LDY #6 @Y: NOP DEY BNE @Y PLP	Clobbers Y
NOP SEC LDA #9 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #8 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #8 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PLP JSR @rts14 JSR @rts14 JSR @rts15	Requires @rts14, and @rts15
NOP PHA JSR @rts15 JSR @rts15 JSR @rts15	Clobbers S; and requires @rts15
12 bytes
NOP BIT $00 JSR @rts15 JSR @rts15 JSR @rts15	Clobbers Z&N, and V; and requires @rts15
JSR @rts12 JSR @rts12 JSR @rts12 JSR @rts14	Requires @rts12, and @rts14
NOP STA @zptemp JSR @rts15 JSR @rts15 JSR @rts15	Requires @zptemp, and @rts15
PHA PHP PHA SEC LDA #6 @A: SBC #1 BNE @A PLA PLP	Clobbers S
NOP NOP $00 JSR @rts15 JSR @rts15 JSR @rts15	Requires @rts15, and support for unofficial opcodes
13 bytes
PHP PHA LDA $00 SEC LDA #6 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

51 cycles

5 bytes
LDY #10 @Y: DEY BNE @Y	Clobbers Y, and Z&N
LDX #10 @X: DEX BNE @X	Clobbers X, and Z&N
8 bytes
PHA PHP LDX #8 @X: DEX BNE @X PLP	Clobbers X, and S
PHA PHP LDY #8 @Y: DEY BNE @Y PLP	Clobbers Y, and S
SEC LDA #6 @A: PHA SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
PHP BIT $00 LDY #8 @Y: DEY BNE @Y PLP	Clobbers Y
PHP BIT $00 LDX #8 @X: DEX BNE @X PLP	Clobbers X
SEC LDA #4 @A: PHP PLP SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PLA TYA PHA LDY #7 @Y: DEY BNE @Y PLA TAY	Clobbers A, S, and Z&N
11 bytes
NOP NOP TYA PHA LDY #7 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
PHP PLP JSR @rts14 JSR @rts15 JSR @rts15	Requires @rts14, and @rts15
PHA PHA JSR @rts15 JSR @rts15 JSR @rts15	Clobbers S; and requires @rts15
PHA PHA PHP SEC LDA #7 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA PHA SEC LDA #7 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
12 bytes
NOP NOP NOP JSR @rts15 JSR @rts15 JSR @rts15	Requires @rts15
NOP PHA TYA PHA LDY #6 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP NOP NOP PHP SEC LDA #7 @A: SBC #1 BNE @A PLP	Clobbers A
NOP PHP PLP JSR @rts14 JSR @rts14 JSR @rts14	Requires @rts14
13 bytes
NOP NOP PHP PHA SEC LDA #6 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

52 cycles

7 bytes
NOP LDY #7 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
NOP LDX #7 @X: NOP DEX BNE @X	Clobbers X, and Z&N
8 bytes
SEC LDA #7 @A: NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
TYA PHA LDY #8 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP PHP LDY #6 @Y: NOP DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #6 @X: NOP DEX BNE @X PLP	Clobbers X
10 bytes
PHP SEC LDA #6 @A: NOP SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #6 @A: NOP SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PHA SEC LDA #7 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

53 cycles

6 bytes
NOP LDX #10 @X: DEX BNE @X	Clobbers X, and Z&N
NOP LDY #10 @Y: DEY BNE @Y	Clobbers Y, and Z&N
7 bytes
PHP LDX #9 @X: DEX BNE @X PLP	Clobbers X
PHP LDY #9 @Y: DEY BNE @Y PLP	Clobbers Y
SEC LDA #10 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PHA PHP SEC LDA #8 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #8 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
11 bytes
PHP LDA $00 SEC LDA #8 @A: SBC #1 BNE @A PLP	Clobbers A
PHA LDA $00 SEC LDA #8 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
NOP PHP PLP JSR @rts14 JSR @rts15 JSR @rts15	Requires @rts14, and @rts15
NOP PHA PHA JSR @rts15 JSR @rts15 JSR @rts15	Clobbers S; and requires @rts15
13 bytes
PHP PHA SEC LDA #3 @A: PHP PLP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

54 cycles

6 bytes
PHA LDX #10 @X: DEX BNE @X	Clobbers X, S, and Z&N
PHA LDY #10 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
7 bytes
LDA $00 LDX #10 @X: DEX BNE @X	Clobbers A, X, and Z&N
LDA $00 LDY #10 @Y: DEY BNE @Y	Clobbers A, Y, and Z&N
BIT $00 LDX #10 @X: DEX BNE @X	Clobbers X, Z&N, and V
BIT $00 LDY #10 @Y: DEY BNE @Y	Clobbers Y, Z&N, and V
STA @zptemp LDX #10 @X: DEX BNE @X	Clobbers X, and Z&N; and requires @zptemp
STA @zptemp LDY #10 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires @zptemp
NOP $00 LDX #10 @X: DEX BNE @X	Clobbers X, and Z&N; and requires support for unofficial opcodes
NOP $00 LDY #10 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires support for unofficial opcodes
8 bytes
JMP *+3 LDY #10 @Y: DEY BNE @Y	Clobbers Y, and Z&N
JMP *+3 LDX #10 @X: DEX BNE @X	Clobbers X, and Z&N
9 bytes
NOP SEC LDA #7 @A: NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
PHA PHA PHP LDY #8 @Y: DEY BNE @Y PLP	Clobbers Y, and S
PHA PHA PHP LDX #8 @X: DEX BNE @X PLP	Clobbers X, and S
10 bytes
TYA PHA LDY #6 @Y: NOP DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP PHP LDX #6 @X: NOP DEX BNE @X PLP	Clobbers X
NOP NOP PHP LDY #6 @Y: NOP DEY BNE @Y PLP	Clobbers Y
11 bytes
PHA TYA PHA LDY #7 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP PHP SEC LDA #6 @A: NOP SBC #1 BNE @A PLP	Clobbers A
12 bytes
NOP PHP PHA SEC LDA #7 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

55 cycles

6 bytes
LDY #6 @Y: PLA DEY BNE @Y	Clobbers A, Y, S, and Z&N
LDX #6 @X: PLA DEX BNE @X	Clobbers A, X, S, and Z&N
7 bytes
LDY #6 @Y: NOP NOP DEY BNE @Y	Clobbers Y, and Z&N
LDX #6 @X: NOP NOP DEX BNE @X	Clobbers X, and Z&N
8 bytes
NOP PHP LDY #9 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #9 @X: DEX BNE @X PLP	Clobbers X
NOP SEC LDA #10 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #9 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #9 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
JSR @rts12 JSR @rts14 JSR @rts14 JSR @rts15	Requires @rts12, @rts14, and @rts15
PHA PHP PHA SEC LDA #7 @A: SBC #1 BNE @A PLA PLP	Clobbers S
13 bytes
PHP PHA LDA $00 SEC LDA #7 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

56 cycles

5 bytes
LDY #11 @Y: DEY BNE @Y	Clobbers Y, and Z&N
LDX #11 @X: DEX BNE @X	Clobbers X, and Z&N
8 bytes
PHA PHP LDY #9 @Y: DEY BNE @Y PLP	Clobbers Y, and S
PHA PHP LDX #9 @X: DEX BNE @X PLP	Clobbers X, and S
PHA SEC LDA #10 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
PHP LDX #4 @X: PHP PLP DEX BNE @X PLP	Clobbers X
PHP LDY #4 @Y: PHP PLP DEY BNE @Y PLP	Clobbers Y
LDA $00 SEC LDA #10 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PLA TYA PHA LDY #8 @Y: DEY BNE @Y PLA TAY	Clobbers A, S, and Z&N
11 bytes
NOP TYA PHA LDY #6 @Y: NOP DEY BNE @Y PLA TAY	Clobbers A, and Z&N
PHA PHA PHP SEC LDA #8 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA PHA SEC LDA #8 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
12 bytes
NOP PHA TYA PHA LDY #7 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP NOP PHP SEC LDA #6 @A: NOP SBC #1 BNE @A PLP	Clobbers A
JSR @rts14 JSR @rts14 JSR @rts14 JSR @rts14	Requires @rts14
13 bytes
NOP NOP PHP PHA SEC LDA #7 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

57 cycles

6 bytes
LDX #8 @X: NOP DEX BNE @X	Clobbers X, and Z&N
LDY #8 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
7 bytes
SEC LDA #136 @A = * - 1 ; ^ Hides DEY SBC #1 BMI @A	Clobbers A, Z&N, and C
8 bytes
PHP LDY #7 @Y: NOP DEY BNE @Y PLP	Clobbers Y
PHP LDX #7 @X: NOP DEX BNE @X PLP	Clobbers X
9 bytes
TYA PHA LDY #9 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
10 bytes
NOP PHP SEC LDA #9 @A: SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #9 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PHA SEC LDA #8 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

58 cycles

6 bytes
NOP LDX #11 @X: DEX BNE @X	Clobbers X, and Z&N
NOP LDY #11 @Y: DEY BNE @Y	Clobbers Y, and Z&N
7 bytes
PHP LDY #10 @Y: DEY BNE @Y PLP	Clobbers Y
PHP LDX #10 @X: DEX BNE @X PLP	Clobbers X
SEC LDA #11 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PHA PHP SEC LDA #9 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #9 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
11 bytes
PHP SEC LDA #4 @A: PHP PLP SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #4 @A: PHP PLP SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
JSR @rts14 JSR @rts14 JSR @rts15 JSR @rts15	Requires @rts14, and @rts15
13 bytes
NOP NOP PHA TYA PHA LDY #7 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP JSR @rts14 JSR @rts14 JSR @rts14 JSR @rts14	Requires @rts14
PHA PHA PHP PHA SEC LDA #7 @A: SBC #1 BNE @A PLA PLP	Clobbers S
14 bytes
NOP NOP NOP PHP PHA SEC LDA #7 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

59 cycles

6 bytes
PHA LDX #11 @X: DEX BNE @X	Clobbers X, S, and Z&N
PHA LDY #11 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
7 bytes
NOP LDY #8 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
NOP LDX #8 @X: NOP DEX BNE @X	Clobbers X, and Z&N
8 bytes
SEC LDA #8 @A: NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
NOP PHP LDY #7 @Y: NOP DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #7 @X: NOP DEX BNE @X PLP	Clobbers X
10 bytes
PHP SEC LDA #7 @A: NOP SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #7 @A: NOP SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHA TYA PHA LDY #8 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
12 bytes
PHP PHA SEC LDA #6 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

60 cycles

6 bytes
PLA LDX #11 @X: DEX BNE @X	Clobbers A, X, S, and Z&N
PLA LDY #11 @Y: DEY BNE @Y	Clobbers A, Y, S, and Z&N
7 bytes
NOP NOP LDY #11 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP NOP LDX #11 @X: DEX BNE @X	Clobbers X, and Z&N
8 bytes
NOP PHP LDY #10 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #10 @X: DEX BNE @X PLP	Clobbers X
NOP SEC LDA #11 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #10 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #10 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
JSR @rts15 JSR @rts15 JSR @rts15 JSR @rts15	Requires @rts15
PHA PHP PHA SEC LDA #8 @A: SBC #1 BNE @A PLA PLP	Clobbers S
13 bytes
PHP PHA LDA $00 SEC LDA #8 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

61 cycles

5 bytes
LDY #12 @Y: DEY BNE @Y	Clobbers Y, and Z&N
LDX #12 @X: DEX BNE @X	Clobbers X, and Z&N
8 bytes
PHA PHP LDY #10 @Y: DEY BNE @Y PLP	Clobbers Y, and S
PHA PHP LDX #10 @X: DEX BNE @X PLP	Clobbers X, and S
PHA SEC LDA #11 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
PHP BIT $00 LDY #10 @Y: DEY BNE @Y PLP	Clobbers Y
PHP BIT $00 LDX #10 @X: DEX BNE @X PLP	Clobbers X
NOP SEC LDA #8 @A: NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
TXA PHA LDX #7 @X: NOP DEX BNE @X PLA TAX	Clobbers A, and Z&N
11 bytes
NOP PHP SEC LDA #7 @A: NOP SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #7 @A: NOP SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHA TYA PHA LDY #6 @Y: NOP DEY BNE @Y PLA TAY PLA	Clobbers Z&N
13 bytes
NOP PHP PHA SEC LDA #6 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

62 cycles

7 bytes
PHA PHA LDY #11 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
PHA PHA LDX #11 @X: DEX BNE @X	Clobbers X, S, and Z&N
8 bytes
NOP NOP NOP LDX #11 @X: DEX BNE @X	Clobbers X, and Z&N
NOP NOP NOP LDY #11 @Y: DEY BNE @Y	Clobbers Y, and Z&N
PLA SEC LDA #11 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
TXA PHA LDX #10 @X: DEX BNE @X PLA TAX	Clobbers A, and Z&N
PHP LDX #6 @X: NOP NOP DEX BNE @X PLP	Clobbers X
PHP LDY #6 @Y: NOP NOP DEY BNE @Y PLP	Clobbers Y
10 bytes
NOP PHP SEC LDA #10 @A: SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #10 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PHA SEC LDA #9 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

63 cycles

6 bytes
NOP LDX #12 @X: DEX BNE @X	Clobbers X, and Z&N
NOP LDY #12 @Y: DEY BNE @Y	Clobbers Y, and Z&N
7 bytes
PHP LDX #11 @X: DEX BNE @X PLP	Clobbers X
PHP LDY #11 @Y: DEY BNE @Y PLP	Clobbers Y
SEC LDA #12 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PHA PHP SEC LDA #10 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #10 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
11 bytes
PHP LDA $00 SEC LDA #10 @A: SBC #1 BNE @A PLP	Clobbers A
PHA LDA $00 SEC LDA #10 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
13 bytes
NOP PHA TYA PHA LDY #6 @Y: NOP DEY BNE @Y PLA TAY PLA	Clobbers Z&N
PHA PHA PHP PHA SEC LDA #8 @A: SBC #1 BNE @A PLA PLP	Clobbers S
14 bytes
NOP NOP PHP PHA SEC LDA #6 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

64 cycles

6 bytes
LDY #9 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
LDX #9 @X: NOP DEX BNE @X	Clobbers X, and Z&N
8 bytes
PHP LDY #8 @Y: NOP DEY BNE @Y PLP	Clobbers Y
PHP LDX #8 @X: NOP DEX BNE @X PLP	Clobbers X
9 bytes
PHP SEC LDA #136 @A = * - 1 ; ^ Hides DEY SBC #1 BMI @A PLP	Clobbers A
PHA SEC LDA #136 @A = * - 1 ; ^ Hides DEY SBC #1 BMI @A PLA	Clobbers Z&N, and C
11 bytes
PHA TYA PHA LDY #9 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
12 bytes
NOP PHP PHA SEC LDA #9 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

65 cycles

6 bytes
LDX #8 @X: PHA DEX BNE @X	Clobbers X, S, and Z&N
LDY #8 @Y: PHA DEY BNE @Y	Clobbers Y, S, and Z&N
7 bytes
NOP NOP LDY #12 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP NOP LDX #12 @X: DEX BNE @X	Clobbers X, and Z&N
8 bytes
NOP PHP LDY #11 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #11 @X: DEX BNE @X PLP	Clobbers X
NOP SEC LDA #12 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #11 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #11 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHA PHP PHA SEC LDA #9 @A: SBC #1 BNE @A PLA PLP	Clobbers S
13 bytes
PHP PHA SEC LDA #4 @A: PHP PLP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

66 cycles

5 bytes
LDY #13 @Y: DEY BNE @Y	Clobbers Y, and Z&N
LDX #13 @X: DEX BNE @X	Clobbers X, and Z&N
7 bytes
SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP SBC #1 BMI @A	Clobbers A, Z&N, and C; and requires support for unofficial opcodes
8 bytes
SEC LDA #9 @A: NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
PHA PHP LDY #11 @Y: DEY BNE @Y PLP	Clobbers Y, and S
PHA PHP LDX #11 @X: DEX BNE @X PLP	Clobbers X, and S
9 bytes
NOP PHP LDY #8 @Y: NOP DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #8 @X: NOP DEX BNE @X PLP	Clobbers X
10 bytes
PHP SEC LDA #8 @A: NOP SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #8 @A: NOP SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHP PHA SEC LDA #7 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

67 cycles

7 bytes
LDY #6 @Y: PHA PHA DEY BNE @Y	Clobbers Y, S, and Z&N
LDX #6 @X: PHA PHA DEX BNE @X	Clobbers X, S, and Z&N
8 bytes
LDY #6 @Y: NOP NOP NOP DEY BNE @Y	Clobbers Y, and Z&N
LDX #6 @X: NOP NOP NOP DEX BNE @X	Clobbers X, and Z&N
SEC LDA #8 @A: PHA SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
TYA PHA LDY #11 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP PHP LDX #11 @X: DEX BNE @X PLP	Clobbers X
NOP NOP PHP LDY #11 @Y: DEY BNE @Y PLP	Clobbers Y
10 bytes
NOP PHP SEC LDA #11 @A: SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #11 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PHA SEC LDA #10 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

68 cycles

6 bytes
NOP LDX #13 @X: DEX BNE @X	Clobbers X, and Z&N
NOP LDY #13 @Y: DEY BNE @Y	Clobbers Y, and Z&N
7 bytes
PHP LDX #12 @X: DEX BNE @X PLP	Clobbers X
PHP LDY #12 @Y: DEY BNE @Y PLP	Clobbers Y
SEC LDA #13 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
TXA PHA LDX #8 @X: NOP DEX BNE @X PLA TAX	Clobbers A, and Z&N
PHA PHP SEC LDA #11 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #11 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
11 bytes
NOP PHP SEC LDA #8 @A: NOP SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #8 @A: NOP SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHA TXA PHA LDX #7 @X: NOP DEX BNE @X PLA TAX PLA	Clobbers Z&N
13 bytes
NOP PHP PHA SEC LDA #7 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

69 cycles

6 bytes
PHA LDX #13 @X: DEX BNE @X	Clobbers X, S, and Z&N
PHA LDY #13 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
7 bytes
LDA $00 LDX #13 @X: DEX BNE @X	Clobbers A, X, and Z&N
LDA $00 LDY #13 @Y: DEY BNE @Y	Clobbers A, Y, and Z&N
BIT $00 LDX #13 @X: DEX BNE @X	Clobbers X, Z&N, and V
BIT $00 LDY #13 @Y: DEY BNE @Y	Clobbers Y, Z&N, and V
STA @zptemp LDX #13 @X: DEX BNE @X	Clobbers X, and Z&N; and requires @zptemp
STA @zptemp LDY #13 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires @zptemp
NOP $00 LDY #13 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires support for unofficial opcodes
NOP $00 LDX #13 @X: DEX BNE @X	Clobbers X, and Z&N; and requires support for unofficial opcodes
8 bytes
JMP *+3 LDX #13 @X: DEX BNE @X	Clobbers X, and Z&N
JMP *+3 LDY #13 @Y: DEY BNE @Y	Clobbers Y, and Z&N
PHA SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP SBC #1 BMI @A	Clobbers A, S, Z&N, and C; and requires support for unofficial opcodes
9 bytes
PHA PHA PHP LDX #11 @X: DEX BNE @X PLP	Clobbers X, and S
PHA PHA PHP LDY #11 @Y: DEY BNE @Y PLP	Clobbers Y, and S
SEC LDA #6 @A: PHA PHA SBC #1 BNE @A	Clobbers A, S, Z&N, and C
LDA $00 SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP SBC #1 BMI @A	Clobbers A, Z&N, and C; and requires support for unofficial opcodes
10 bytes
NOP TYA PHA LDY #11 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP NOP PHP LDY #11 @Y: DEY BNE @Y PLP	Clobbers Y
NOP NOP NOP PHP LDX #11 @X: DEX BNE @X PLP	Clobbers X
11 bytes
PHA TXA PHA LDX #10 @X: DEX BNE @X PLA TAX PLA	Clobbers Z&N
NOP NOP PHP SEC LDA #11 @A: SBC #1 BNE @A PLP	Clobbers A
12 bytes
NOP PHP PHA SEC LDA #10 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

70 cycles

6 bytes
PLA LDX #13 @X: DEX BNE @X	Clobbers A, X, S, and Z&N
PLA LDY #13 @Y: DEY BNE @Y	Clobbers A, Y, S, and Z&N
7 bytes
NOP NOP LDY #13 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP NOP LDX #13 @X: DEX BNE @X	Clobbers X, and Z&N
8 bytes
NOP PHP LDY #12 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #12 @X: DEX BNE @X PLP	Clobbers X
NOP SEC LDA #13 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #12 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #12 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHA PHP PHA SEC LDA #10 @A: SBC #1 BNE @A PLA PLP	Clobbers S
13 bytes
PHP PHA LDA $00 SEC LDA #10 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

71 cycles

5 bytes
LDY #14 @Y: DEY BNE @Y	Clobbers Y, and Z&N
LDX #14 @X: DEX BNE @X	Clobbers X, and Z&N
8 bytes
PHP LDX #9 @X: NOP DEX BNE @X PLP	Clobbers X
PHP LDY #9 @Y: NOP DEY BNE @Y PLP	Clobbers Y
PHA SEC LDA #13 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
LDA $00 SEC LDA #13 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PLA TYA PHA LDY #11 @Y: DEY BNE @Y PLA TAY	Clobbers A, S, and Z&N
11 bytes
PHP PHA SEC LDA #136 @A = * - 1 ; ^ Hides DEY SBC #1 BMI @A PLA PLP	Clobbers nothing, requires nothing

72 cycles

7 bytes
PHA PHA LDX #13 @X: DEX BNE @X	Clobbers X, S, and Z&N
PHA PHA LDY #13 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
8 bytes
NOP NOP NOP LDX #13 @X: DEX BNE @X	Clobbers X, and Z&N
NOP NOP NOP LDY #13 @Y: DEY BNE @Y	Clobbers Y, and Z&N
PLA SEC LDA #13 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
TYA PHA LDY #12 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
PHP LDX #8 @X: BIT $00 DEX BNE @X PLP	Clobbers X
PHP LDY #8 @Y: BIT $00 DEY BNE @Y PLP	Clobbers Y
10 bytes
NOP PHP SEC LDA #12 @A: SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #12 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PHA SEC LDA #11 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

73 cycles

6 bytes
NOP LDX #14 @X: DEX BNE @X	Clobbers X, and Z&N
NOP LDY #14 @Y: DEY BNE @Y	Clobbers Y, and Z&N
7 bytes
PHP LDX #13 @X: DEX BNE @X PLP	Clobbers X
PHP LDY #13 @Y: DEY BNE @Y PLP	Clobbers Y
SEC LDA #14 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP SBC #1 BMI @A PLP	Clobbers A; and requires support for unofficial opcodes
PHA SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP SBC #1 BMI @A PLA	Clobbers Z&N, and C; and requires support for unofficial opcodes
10 bytes
PHP SEC LDA #9 @A: NOP SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #9 @A: NOP SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHP PHA SEC LDA #8 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

74 cycles

6 bytes
PHA LDY #14 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
PHA LDX #14 @X: DEX BNE @X	Clobbers X, S, and Z&N
7 bytes
LDA $00 LDY #14 @Y: DEY BNE @Y	Clobbers A, Y, and Z&N
LDA $00 LDX #14 @X: DEX BNE @X	Clobbers A, X, and Z&N
BIT $00 LDY #14 @Y: DEY BNE @Y	Clobbers Y, Z&N, and V
BIT $00 LDX #14 @X: DEX BNE @X	Clobbers X, Z&N, and V
STA @zptemp LDY #14 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires @zptemp
STA @zptemp LDX #14 @X: DEX BNE @X	Clobbers X, and Z&N; and requires @zptemp
NOP $00 LDY #14 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires support for unofficial opcodes
NOP $00 LDX #14 @X: DEX BNE @X	Clobbers X, and Z&N; and requires support for unofficial opcodes
8 bytes
JMP *+3 LDX #14 @X: DEX BNE @X	Clobbers X, and Z&N
JMP *+3 LDY #14 @Y: DEY BNE @Y	Clobbers Y, and Z&N
9 bytes
PHA PHP LDY #9 @Y: NOP DEY BNE @Y PLP	Clobbers Y, and S
PHA PHP LDX #9 @X: NOP DEX BNE @X PLP	Clobbers X, and S
NOP PLA SEC LDA #13 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
10 bytes
NOP TYA PHA LDY #12 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
PHP LDX #6 @X: NOP NOP NOP DEX BNE @X PLP	Clobbers X
PHP LDY #6 @Y: NOP NOP NOP DEY BNE @Y PLP	Clobbers Y
11 bytes
PHA TYA PHA LDY #11 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP NOP PHP SEC LDA #12 @A: SBC #1 BNE @A PLP	Clobbers A
12 bytes
NOP PHP PHA SEC LDA #11 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

75 cycles

6 bytes
PLA LDX #14 @X: DEX BNE @X	Clobbers A, X, S, and Z&N
PLA LDY #14 @Y: DEY BNE @Y	Clobbers A, Y, S, and Z&N
7 bytes
NOP NOP LDY #14 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP NOP LDX #14 @X: DEX BNE @X	Clobbers X, and Z&N
8 bytes
NOP PHP LDY #13 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #13 @X: DEX BNE @X PLP	Clobbers X
NOP SEC LDA #14 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #13 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #13 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHA TXA PHA LDX #8 @X: NOP DEX BNE @X PLA TAX PLA	Clobbers Z&N
PHA PHP PHA SEC LDA #11 @A: SBC #1 BNE @A PLA PLP	Clobbers S
13 bytes
NOP PHP PHA SEC LDA #8 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

76 cycles

5 bytes
LDX #15 @X: DEX BNE @X	Clobbers X, and Z&N
LDY #15 @Y: DEY BNE @Y	Clobbers Y, and Z&N
8 bytes
PHA PHP LDX #13 @X: DEX BNE @X PLP	Clobbers X, and S
PHA PHP LDY #13 @Y: DEY BNE @Y PLP	Clobbers Y, and S
PHA SEC LDA #14 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
PHP BIT $00 LDY #13 @Y: DEY BNE @Y PLP	Clobbers Y
PHP BIT $00 LDX #13 @X: DEX BNE @X PLP	Clobbers X
LDA $00 SEC LDA #14 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PLA TYA PHA LDY #12 @Y: DEY BNE @Y PLA TAY	Clobbers A, S, and Z&N
PHA PHP SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP SBC #1 BMI @A PLP	Clobbers A, and S; and requires support for unofficial opcodes
PHA PHA SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP SBC #1 BMI @A PLA	Clobbers S, Z&N, and C; and requires support for unofficial opcodes
11 bytes
TYA PHA LDY #8 @Y: LDA $00 DEY BNE @Y PLA TAY	Clobbers A, and Z&N
PHA PHP SEC LDA #9 @A: NOP SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #9 @A: NOP SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
NOP $00 PHP SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP SBC #1 BMI @A PLP	Clobbers A; and requires support for unofficial opcodes
NOP $00 PHA SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP SBC #1 BMI @A PLA	Clobbers Z&N, and C; and requires support for unofficial opcodes
12 bytes
NOP PHA TYA PHA LDY #11 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
PHP SEC LDA #6 @A: NOP NOP NOP SBC #1 BNE @A PLP	Clobbers A
13 bytes
NOP NOP PHP PHA SEC LDA #11 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

77 cycles

7 bytes
PHA PHA LDY #14 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
PHA PHA LDX #14 @X: DEX BNE @X	Clobbers X, S, and Z&N
8 bytes
NOP NOP NOP LDX #14 @X: DEX BNE @X	Clobbers X, and Z&N
NOP NOP NOP LDY #14 @Y: DEY BNE @Y	Clobbers Y, and Z&N
PLA SEC LDA #14 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
TYA PHA LDY #13 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP PHP LDY #13 @Y: DEY BNE @Y PLP	Clobbers Y
NOP NOP PHP LDX #13 @X: DEX BNE @X PLP	Clobbers X
10 bytes
NOP PHP SEC LDA #13 @A: SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #13 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PHA SEC LDA #12 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

78 cycles

6 bytes
LDX #11 @X: NOP DEX BNE @X	Clobbers X, and Z&N
LDY #11 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
7 bytes
PHP LDY #14 @Y: DEY BNE @Y PLP	Clobbers Y
PHP LDX #14 @X: DEX BNE @X PLP	Clobbers X
SEC LDA #15 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PHA PHP SEC LDA #13 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #13 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
11 bytes
PHP LDA $00 SEC LDA #13 @A: SBC #1 BNE @A PLP	Clobbers A
PHA LDA $00 SEC LDA #13 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
13 bytes
PHP PLP PHP PHA SEC LDA #136 @A = * - 1 ; ^ Hides DEY SBC #1 BMI @A PLA PLP	Clobbers nothing, requires nothing

79 cycles

6 bytes
PHA LDY #15 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
PHA LDX #15 @X: DEX BNE @X	Clobbers X, S, and Z&N
7 bytes
LDA $00 LDY #15 @Y: DEY BNE @Y	Clobbers A, Y, and Z&N
LDA $00 LDX #15 @X: DEX BNE @X	Clobbers A, X, and Z&N
BIT $00 LDY #15 @Y: DEY BNE @Y	Clobbers Y, Z&N, and V
BIT $00 LDX #15 @X: DEX BNE @X	Clobbers X, Z&N, and V
STA @zptemp LDY #15 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires @zptemp
STA @zptemp LDX #15 @X: DEX BNE @X	Clobbers X, and Z&N; and requires @zptemp
NOP $00 LDY #15 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires support for unofficial opcodes
NOP $00 LDX #15 @X: DEX BNE @X	Clobbers X, and Z&N; and requires support for unofficial opcodes
8 bytes
JMP *+3 LDY #15 @Y: DEY BNE @Y	Clobbers Y, and Z&N
JMP *+3 LDX #15 @X: DEX BNE @X	Clobbers X, and Z&N
9 bytes
PHA PHA PHP LDX #13 @X: DEX BNE @X PLP	Clobbers X, and S
PHA PHA PHP LDY #13 @Y: DEY BNE @Y PLP	Clobbers Y, and S
NOP PLA SEC LDA #14 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
10 bytes
NOP TYA PHA LDY #13 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP NOP PHP LDY #13 @Y: DEY BNE @Y PLP	Clobbers Y
NOP NOP NOP PHP LDX #13 @X: DEX BNE @X PLP	Clobbers X
11 bytes
PHA TYA PHA LDY #12 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP NOP PHP SEC LDA #13 @A: SBC #1 BNE @A PLP	Clobbers A
12 bytes
NOP PHP PHA SEC LDA #12 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

80 cycles

6 bytes
PLA LDY #15 @Y: DEY BNE @Y	Clobbers A, Y, S, and Z&N
PLA LDX #15 @X: DEX BNE @X	Clobbers A, X, S, and Z&N
7 bytes
NOP LDY #11 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
NOP LDX #11 @X: NOP DEX BNE @X	Clobbers X, and Z&N
8 bytes
NOP PHP LDY #14 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #14 @X: DEX BNE @X PLP	Clobbers X
SEC LDA #11 @A: NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #14 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #14 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PHA SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP SBC #1 BMI @A PLA PLP	Requires support for unofficial opcodes
12 bytes
PHP PHA SEC LDA #9 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

81 cycles

5 bytes
LDY #16 @Y: DEY BNE @Y	Clobbers Y, and Z&N
LDX #16 @X: DEX BNE @X	Clobbers X, and Z&N
8 bytes
PHA PHP LDY #14 @Y: DEY BNE @Y PLP	Clobbers Y, and S
PHA PHP LDX #14 @X: DEX BNE @X PLP	Clobbers X, and S
PHA SEC LDA #15 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
PHP BIT $00 LDY #14 @Y: DEY BNE @Y PLP	Clobbers Y
PHP BIT $00 LDX #14 @X: DEX BNE @X PLP	Clobbers X
LDA $00 SEC LDA #15 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PLA TYA PHA LDY #13 @Y: DEY BNE @Y PLA TAY	Clobbers A, S, and Z&N
11 bytes
NOP NOP TYA PHA LDY #13 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
PHA PHA PHP SEC LDA #13 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA PHA SEC LDA #13 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
12 bytes
NOP PHA TYA PHA LDY #12 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP NOP NOP PHP SEC LDA #13 @A: SBC #1 BNE @A PLP	Clobbers A
13 bytes
NOP NOP PHP PHA SEC LDA #12 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

82 cycles

6 bytes
LDY #9 @Y: PLA DEY BNE @Y	Clobbers A, Y, S, and Z&N
LDX #9 @X: PLA DEX BNE @X	Clobbers A, X, S, and Z&N
7 bytes
LDY #9 @Y: NOP NOP DEY BNE @Y	Clobbers Y, and Z&N
LDX #9 @X: NOP NOP DEX BNE @X	Clobbers X, and Z&N
8 bytes
PLA SEC LDA #15 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
TYA PHA LDY #14 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP PHP LDX #14 @X: DEX BNE @X PLP	Clobbers X
NOP NOP PHP LDY #14 @Y: DEY BNE @Y PLP	Clobbers Y
10 bytes
NOP PHP SEC LDA #14 @A: SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #14 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PHA SEC LDA #13 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

83 cycles

6 bytes
NOP LDX #16 @X: DEX BNE @X	Clobbers X, and Z&N
NOP LDY #16 @Y: DEY BNE @Y	Clobbers Y, and Z&N
7 bytes
PHP LDX #15 @X: DEX BNE @X PLP	Clobbers X
PHP LDY #15 @Y: DEY BNE @Y PLP	Clobbers Y
SEC LDA #16 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PHA PHP SEC LDA #14 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #14 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
11 bytes
PHP LDA $00 SEC LDA #14 @A: SBC #1 BNE @A PLP	Clobbers A
PHA LDA $00 SEC LDA #14 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHA PHP PHA SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP SBC #1 BMI @A PLA PLP	Clobbers S; and requires support for unofficial opcodes
13 bytes
PHA TYA PHA LDY #8 @Y: LDA $00 DEY BNE @Y PLA TAY PLA	Clobbers Z&N
PHA PHP PHA SEC LDA #9 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers S
NOP $00 PHP PHA SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP SBC #1 BMI @A PLA PLP	Requires support for unofficial opcodes
14 bytes
PHP PHA SEC LDA #6 @A: NOP NOP NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

84 cycles

6 bytes
PHA LDX #16 @X: DEX BNE @X	Clobbers X, S, and Z&N
PHA LDY #16 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
7 bytes
LDA $00 LDX #16 @X: DEX BNE @X	Clobbers A, X, and Z&N
LDA $00 LDY #16 @Y: DEY BNE @Y	Clobbers A, Y, and Z&N
BIT $00 LDY #16 @Y: DEY BNE @Y	Clobbers Y, Z&N, and V
BIT $00 LDX #16 @X: DEX BNE @X	Clobbers X, Z&N, and V
STA @zptemp LDX #16 @X: DEX BNE @X	Clobbers X, and Z&N; and requires @zptemp
STA @zptemp LDY #16 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires @zptemp
NOP $00 LDY #16 @Y: DEY BNE @Y	Clobbers Y, and Z&N; and requires support for unofficial opcodes
NOP $00 LDX #16 @X: DEX BNE @X	Clobbers X, and Z&N; and requires support for unofficial opcodes
SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA,X ;hides 'NOP' SBC #1 BMI @A	Clobbers A, Z&N, and C; and requires support for unofficial opcodes
8 bytes
JMP *+3 LDX #16 @X: DEX BNE @X	Clobbers X, and Z&N
JMP *+3 LDY #16 @Y: DEY BNE @Y	Clobbers Y, and Z&N
9 bytes
SEC LDA #9 @A: NOP NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
PHA PHA PHP LDX #14 @X: DEX BNE @X PLP	Clobbers X, and S
PHA PHA PHP LDY #14 @Y: DEY BNE @Y PLP	Clobbers Y, and S
10 bytes
NOP TYA PHA LDY #14 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP NOP PHP LDY #14 @Y: DEY BNE @Y PLP	Clobbers Y
NOP NOP NOP PHP LDX #14 @X: DEX BNE @X PLP	Clobbers X
11 bytes
PHA TYA PHA LDY #13 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP NOP PHP SEC LDA #14 @A: SBC #1 BNE @A PLP	Clobbers A
12 bytes
NOP PHP PHA SEC LDA #13 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

85 cycles

6 bytes
LDY #12 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
LDX #12 @X: NOP DEX BNE @X	Clobbers X, and Z&N
8 bytes
PHP LDY #11 @Y: NOP DEY BNE @Y PLP	Clobbers Y
PHP LDX #11 @X: NOP DEX BNE @X PLP	Clobbers X
NOP SEC LDA #16 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #15 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #15 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHA PHP PHA SEC LDA #13 @A: SBC #1 BNE @A PLA PLP	Clobbers S
13 bytes
PHP PHA LDA $00 SEC LDA #13 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

86 cycles

5 bytes
LDX #17 @X: DEX BNE @X	Clobbers X, and Z&N
LDY #17 @Y: DEY BNE @Y	Clobbers Y, and Z&N
8 bytes
PHA PHP LDY #15 @Y: DEY BNE @Y PLP	Clobbers Y, and S
PHA PHP LDX #15 @X: DEX BNE @X PLP	Clobbers X, and S
PHA SEC LDA #16 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
NOP SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA,X ;hides 'NOP' SBC #1 BMI @A	Clobbers A, Z&N, and C; and requires support for unofficial opcodes
9 bytes
PHP BIT $00 LDX #15 @X: DEX BNE @X PLP	Clobbers X
PHP BIT $00 LDY #15 @Y: DEY BNE @Y PLP	Clobbers Y
LDA $00 SEC LDA #16 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PLA TYA PHA LDY #14 @Y: DEY BNE @Y PLA TAY	Clobbers A, S, and Z&N
11 bytes
NOP NOP TYA PHA LDY #14 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
PHA PHA PHP SEC LDA #14 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA PHA SEC LDA #14 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
12 bytes
NOP PHA TYA PHA LDY #13 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP NOP NOP PHP SEC LDA #14 @A: SBC #1 BNE @A PLP	Clobbers A
13 bytes
NOP NOP PHP PHA SEC LDA #13 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

87 cycles

7 bytes
NOP LDX #12 @X: NOP DEX BNE @X	Clobbers X, and Z&N
NOP LDY #12 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
8 bytes
SEC LDA #12 @A: NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
TYA PHA LDY #15 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP PHP LDY #11 @Y: NOP DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #11 @X: NOP DEX BNE @X PLP	Clobbers X
10 bytes
PHP SEC LDA #11 @A: NOP SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #11 @A: NOP SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PHA SEC LDA #14 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

88 cycles

6 bytes
NOP LDY #17 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP LDX #17 @X: DEX BNE @X	Clobbers X, and Z&N
7 bytes
PHP LDY #16 @Y: DEY BNE @Y PLP	Clobbers Y
PHP LDX #16 @X: DEX BNE @X PLP	Clobbers X
SEC LDA #17 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PHA PHP SEC LDA #15 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #15 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
11 bytes
PHP LDA $00 SEC LDA #15 @A: SBC #1 BNE @A PLP	Clobbers A
PHA LDA $00 SEC LDA #15 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
13 bytes
NOP NOP PHA TYA PHA LDY #13 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
PHA PHA PHP PHA SEC LDA #13 @A: SBC #1 BNE @A PLA PLP	Clobbers S
14 bytes
NOP NOP NOP PHP PHA SEC LDA #13 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

89 cycles

6 bytes
LDX #11 @X: PHA DEX BNE @X	Clobbers X, S, and Z&N
LDY #11 @Y: PHA DEY BNE @Y	Clobbers Y, S, and Z&N
7 bytes
LDX #11 @X: LDA $00 DEX BNE @X	Clobbers A, X, and Z&N
LDY #11 @Y: LDA $00 DEY BNE @Y	Clobbers A, Y, and Z&N
LDX #11 @X: BIT $00 DEX BNE @X	Clobbers X, Z&N, and V
LDY #11 @Y: BIT $00 DEY BNE @Y	Clobbers Y, Z&N, and V
LDY #11 @Y: STA @zptemp DEY BNE @Y	Clobbers Y, and Z&N; and requires @zptemp
LDX #11 @X: STA @zptemp DEX BNE @X	Clobbers X, and Z&N; and requires @zptemp
LDY #11 @Y: NOP $00 DEY BNE @Y	Clobbers Y, and Z&N; and requires support for unofficial opcodes
LDX #11 @X: NOP $00 DEX BNE @X	Clobbers X, and Z&N; and requires support for unofficial opcodes
8 bytes
LDX #11 @X: JMP *+3 DEX BNE @X	Clobbers X, and Z&N
LDY #11 @Y: JMP *+3 DEY BNE @Y	Clobbers Y, and Z&N
9 bytes
PHP LDY #9 @Y: NOP NOP DEY BNE @Y PLP	Clobbers Y
PHP LDX #9 @X: NOP NOP DEX BNE @X PLP	Clobbers X
NOP SEC LDA #12 @A: NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
TXA PHA LDX #11 @X: NOP DEX BNE @X PLA TAX	Clobbers A, and Z&N
11 bytes
PHA TYA PHA LDY #14 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP PHP SEC LDA #11 @A: NOP SBC #1 BNE @A PLP	Clobbers A
12 bytes
NOP PHP PHA SEC LDA #14 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

90 cycles

6 bytes
PLA LDX #17 @X: DEX BNE @X	Clobbers A, X, S, and Z&N
PLA LDY #17 @Y: DEY BNE @Y	Clobbers A, Y, S, and Z&N
7 bytes
NOP NOP LDX #17 @X: DEX BNE @X	Clobbers X, and Z&N
NOP NOP LDY #17 @Y: DEY BNE @Y	Clobbers Y, and Z&N
8 bytes
NOP PHP LDY #16 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #16 @X: DEX BNE @X PLP	Clobbers X
NOP SEC LDA #17 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #16 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #16 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHA PHP PHA SEC LDA #14 @A: SBC #1 BNE @A PLA PLP	Clobbers S
13 bytes
PHP PHA LDA $00 SEC LDA #14 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

91 cycles

5 bytes
LDY #18 @Y: DEY BNE @Y	Clobbers Y, and Z&N
LDX #18 @X: DEX BNE @X	Clobbers X, and Z&N
7 bytes
SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $48 ;hides 'PHA' SBC #1 BMI @A	Clobbers A, S, Z&N, and C; and requires support for unofficial opcodes
8 bytes
PHA PHP LDX #16 @X: DEX BNE @X PLP	Clobbers X, and S
PHA PHP LDY #16 @Y: DEY BNE @Y PLP	Clobbers Y, and S
SEC LDA #11 @A: PHA SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
PHP BIT $00 LDX #16 @X: DEX BNE @X PLP	Clobbers X
PHP BIT $00 LDY #16 @Y: DEY BNE @Y PLP	Clobbers Y
LDA $00 SEC LDA #17 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
PHP SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA,X ;hides 'NOP' SBC #1 BMI @A PLP	Clobbers A; and requires support for unofficial opcodes
PHA SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA,X ;hides 'NOP' SBC #1 BMI @A PLA	Clobbers Z&N, and C; and requires support for unofficial opcodes
10 bytes
PLA TYA PHA LDY #15 @Y: DEY BNE @Y PLA TAY	Clobbers A, S, and Z&N
11 bytes
PHP SEC LDA #9 @A: NOP NOP SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #9 @A: NOP NOP SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
NOP PHA TYA PHA LDY #14 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
13 bytes
NOP NOP PHP PHA SEC LDA #14 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

92 cycles

6 bytes
LDY #13 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
LDX #13 @X: NOP DEX BNE @X	Clobbers X, and Z&N
7 bytes
SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA44 ;hides 'NOP zp' SBC #1 BMI @A	Clobbers A, Z&N, and C; and requires support for unofficial opcodes
8 bytes
PHP LDX #12 @X: NOP DEX BNE @X PLP	Clobbers X
PHP LDY #12 @Y: NOP DEY BNE @Y PLP	Clobbers Y
PLA SEC LDA #17 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
TYA PHA LDY #16 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
10 bytes
NOP PHP SEC LDA #16 @A: SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #16 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PHA SEC LDA #15 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

93 cycles

6 bytes
NOP LDX #18 @X: DEX BNE @X	Clobbers X, and Z&N
NOP LDY #18 @Y: DEY BNE @Y	Clobbers Y, and Z&N
7 bytes
PHP LDX #17 @X: DEX BNE @X PLP	Clobbers X
PHP LDY #17 @Y: DEY BNE @Y PLP	Clobbers Y
SEC LDA #18 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PHA PHP SEC LDA #16 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #16 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
NOP PHP SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA,X ;hides 'NOP' SBC #1 BMI @A PLP	Clobbers A; and requires support for unofficial opcodes
NOP PHA SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA,X ;hides 'NOP' SBC #1 BMI @A PLA	Clobbers Z&N, and C; and requires support for unofficial opcodes
11 bytes
PHP LDA $00 SEC LDA #16 @A: SBC #1 BNE @A PLP	Clobbers A
PHA LDA $00 SEC LDA #16 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
13 bytes
NOP NOP PHA TYA PHA LDY #14 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
PHA PHA PHP PHA SEC LDA #14 @A: SBC #1 BNE @A PLA PLP	Clobbers S
14 bytes
NOP NOP NOP PHP PHA SEC LDA #14 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

94 cycles

6 bytes
PHA LDX #18 @X: DEX BNE @X	Clobbers X, S, and Z&N
PHA LDY #18 @Y: DEY BNE @Y	Clobbers Y, S, and Z&N
7 bytes
NOP LDX #13 @X: NOP DEX BNE @X	Clobbers X, and Z&N
NOP LDY #13 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
8 bytes
SEC LDA #13 @A: NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
NOP PHP LDY #12 @Y: NOP DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #12 @X: NOP DEX BNE @X PLP	Clobbers X
10 bytes
PHP SEC LDA #12 @A: NOP SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #12 @A: NOP SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHA TYA PHA LDY #15 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
12 bytes
PHP PHA SEC LDA #11 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

95 cycles

6 bytes
PLA LDX #18 @X: DEX BNE @X	Clobbers A, X, S, and Z&N
PLA LDY #18 @Y: DEY BNE @Y	Clobbers A, Y, S, and Z&N
7 bytes
NOP NOP LDY #18 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP NOP LDX #18 @X: DEX BNE @X	Clobbers X, and Z&N
8 bytes
NOP PHP LDY #17 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #17 @X: DEX BNE @X PLP	Clobbers X
NOP SEC LDA #18 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #17 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #17 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHA PHP PHA SEC LDA #15 @A: SBC #1 BNE @A PLA PLP	Clobbers S
13 bytes
PHP PHA LDA $00 SEC LDA #15 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

96 cycles

5 bytes
LDX #19 @X: DEX BNE @X	Clobbers X, and Z&N
LDY #19 @Y: DEY BNE @Y	Clobbers Y, and Z&N
8 bytes
PHA PHP LDY #17 @Y: DEY BNE @Y PLP	Clobbers Y, and S
PHA PHP LDX #17 @X: DEX BNE @X PLP	Clobbers X, and S
PHA SEC LDA #18 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
PHP LDY #11 @Y: BIT $00 DEY BNE @Y PLP	Clobbers Y
PHP LDX #11 @X: BIT $00 DEX BNE @X PLP	Clobbers X
NOP SEC LDA #13 @A: NOP SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
TYA PHA LDY #12 @Y: NOP DEY BNE @Y PLA TAY	Clobbers A, and Z&N
11 bytes
NOP PHP SEC LDA #12 @A: NOP SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #12 @A: NOP SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHA TXA PHA LDX #11 @X: NOP DEX BNE @X PLA TAX PLA	Clobbers Z&N
13 bytes
NOP PHP PHA SEC LDA #11 @A: NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

97 cycles

6 bytes
LDX #12 @X: PHA DEX BNE @X	Clobbers X, S, and Z&N
LDY #12 @Y: PHA DEY BNE @Y	Clobbers Y, S, and Z&N
7 bytes
LDX #8 @X: PHP PLP DEX BNE @X	Clobbers X, and Z&N
LDY #8 @Y: PHP PLP DEY BNE @Y	Clobbers Y, and Z&N
8 bytes
PLA SEC LDA #18 @A: SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
TYA PHA LDY #17 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
NOP NOP PHP LDY #17 @Y: DEY BNE @Y PLP	Clobbers Y
NOP NOP PHP LDX #17 @X: DEX BNE @X PLP	Clobbers X
10 bytes
NOP PHP SEC LDA #17 @A: SBC #1 BNE @A PLP	Clobbers A
NOP PHA SEC LDA #17 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
11 bytes
PHP PHA SEC LDA #16 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

98 cycles

6 bytes
NOP LDY #19 @Y: DEY BNE @Y	Clobbers Y, and Z&N
NOP LDX #19 @X: DEX BNE @X	Clobbers X, and Z&N
7 bytes
PHP LDY #18 @Y: DEY BNE @Y PLP	Clobbers Y
PHP LDX #18 @X: DEX BNE @X PLP	Clobbers X
SEC LDA #19 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
10 bytes
PHA PHP SEC LDA #17 @A: SBC #1 BNE @A PLP	Clobbers A, and S
PHA PHA SEC LDA #17 @A: SBC #1 BNE @A PLA	Clobbers S, Z&N, and C
11 bytes
PHP SEC LDA #11 @A: BIT $00 SBC #1 BNE @A PLP	Clobbers A
PHA LDA $00 SEC LDA #17 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
PHP PHA SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA,X ;hides 'NOP' SBC #1 BMI @A PLA PLP	Requires support for unofficial opcodes
13 bytes
PHP PHA SEC LDA #9 @A: NOP NOP SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

99 cycles

6 bytes
LDY #14 @Y: NOP DEY BNE @Y	Clobbers Y, and Z&N
LDX #14 @X: NOP DEX BNE @X	Clobbers X, and Z&N
8 bytes
PHP LDX #13 @X: NOP DEX BNE @X PLP	Clobbers X
PHP LDY #13 @Y: NOP DEY BNE @Y PLP	Clobbers Y
SEC LDA #12 @A: PHA SBC #1 BNE @A	Clobbers A, S, Z&N, and C
9 bytes
SEC LDA #8 @A: PHP PLP SBC #1 BNE @A	Clobbers A, Z&N, and C
PHP SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA44 ;hides 'NOP zp' SBC #1 BMI @A PLP	Clobbers A; and requires support for unofficial opcodes
PHA SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA44 ;hides 'NOP zp' SBC #1 BMI @A PLA	Clobbers Z&N, and C; and requires support for unofficial opcodes
10 bytes
NOP TYA PHA LDY #17 @Y: DEY BNE @Y PLA TAY	Clobbers A, and Z&N
11 bytes
PHA TYA PHA LDY #16 @Y: DEY BNE @Y PLA TAY PLA	Clobbers Z&N
NOP NOP PHP SEC LDA #17 @A: SBC #1 BNE @A PLP	Clobbers A
12 bytes
NOP PHP PHA SEC LDA #16 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

100 cycles

6 bytes
LDY #11 @Y: PLA DEY BNE @Y	Clobbers A, Y, S, and Z&N
LDX #11 @X: PLA DEX BNE @X	Clobbers A, X, S, and Z&N
7 bytes
LDX #11 @X: NOP NOP DEX BNE @X	Clobbers X, and Z&N
LDY #11 @Y: NOP NOP DEY BNE @Y	Clobbers Y, and Z&N
SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $EAEA ;hides two 'NOP's SBC #1 BMI @A	Clobbers A, Z&N, and C; and requires support for unofficial opcodes
8 bytes
NOP PHP LDY #18 @Y: DEY BNE @Y PLP	Clobbers Y
NOP PHP LDX #18 @X: DEX BNE @X PLP	Clobbers X
NOP SEC LDA #19 @A: SBC #1 BNE @A	Clobbers A, Z&N, and C
9 bytes
PHP SEC LDA #18 @A: SBC #1 BNE @A PLP	Clobbers A
PHA SEC LDA #18 @A: SBC #1 BNE @A PLA	Clobbers Z&N, and C
12 bytes
PHA PHP PHA SEC LDA #16 @A: SBC #1 BNE @A PLA PLP	Clobbers S
NOP PHP PHA SEC LDA #137 @A = * - 1 ; ^ Hides !NOP #imm NOP $EA,X ;hides 'NOP' SBC #1 BMI @A PLA PLP	Requires support for unofficial opcodes
13 bytes
PHP PHA LDA $00 SEC LDA #16 @A: SBC #1 BNE @A PLA PLP	Clobbers nothing, requires nothing

More

Bisqwit's 6502 delay_n macro set for ca65: http://bisqwit.iki.fi/src/6502-inline_delay.7z