
The Western Design Center, Inc.
W65C02S Datasheet
The Western Design Center, Inc. W65C02S Datasheet 34
Address Mode
11b. Zero Page zp
ASL, DEC, INC, ROL, ROR, TRB, TSB
7 OpCodes
Note
Cycle
1
2
3
4
5
1
1
2
3
4
5
1
2
3
4
5
1
1
2
3
4
5
1
1
2
3
4
1
1
2
3
4
5
6
1
1
2
3
4
1
1
2
3
4
1
1
2
3
4
5
5a
VPB
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
MLB
1
1
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
SYNC
1
0
0
0
0
1
1
0
0
0
0
1
0
0
0
0
1
1
0
0
0
0
1
1
0
0
0
1
1
0
0
0
0
0
1
1
0
0
0
1
1
0
0
0
1
1
0
0
0
0
0
Address Bus
PC
PC+1
PC+1
zp
zp
PC+2
PC
PC+1
zp
zp
zp
PC
PC+1
zp
PC+2
PC+3
PC+2+0Offset
PC
PC+1
PC+1
0,zp+X
Indirect address
PC+1
PC
PC+1
PC+1
0,zp+X
PC+1
PC
PC+1
PC+1
0,zp+X
0,zp+X
0,zp+X
PC+1
PC
PC+1
PC+1
0,zp+Y
PC+1
PC
PC+1
0,zp
Indirect address
PC+1
PC
PC+1
0,zp
0,zp+1
Indirect address+y
PC+2
Data Bus
OpCode
zp
Data
not used
Data
New OpCode
OpCode
zp
Data
not used
Data
OpCode
zp
Data
Offset
not used
New OpCode
OpCode
zp
not used
Indirect address
Data
New OpCode
OpCode
zp
not used
Data
New OpCode
OpCode
zp
not used
Data
not used
Data
New OpCode
OpCode
zp
not used
Data
New OpCode
OpCode
zp
Indirect address
Data
New OpCode
OpCode
zp
Indirect address HIGH
Indirect address LOW
Data
New OpCode
RWB
1
1
1
1
0
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1/0
1
1
1
1
1
1
0
1
1
1
1
1/0
1
1
1
1
1/0
1
1
1
1
1
1/0
I
11c. Zero Page zp
RMBx, SMBx
16 OpCodes, 2 bytes, 5 cycles
11d. Zero Page zp
BBRx, BBSx
16 OpCodes, 3 bytes, 5 cycles
12. Zero Page Indexed Indirect (zp,x)
ADC, AND, CMP, EOR, LDA, ORA,
SBC, STA
8 OpCodes, 1 byte, 5 cycles
13a. Zero Page Indexed with X zp,x
ADC, AND, BIT, CMP, EOR, LDA,
ORA, LDY, SBC, STA, STY, STZ
12 OpCodes, 1 byte, 4 cycles
13b. Zerp Page Indexed with X zp,x
ASL, DEC, INC, LSR, ROL, ROR
6 OpCodes, 1 byte, 6 cycles
14. Zero Page Indexed with Y zp,y
ADC, AND, CMP, EOR, LDA, LDX,
ORA, SBC, STA, STX
10 OpCodes, 1 byte, 4 cycles
15. Zero Page Indirect (zp)
ADC, AND, CMP, EOR, LDA, ORA,
SBC, STA
8 OpCodes, 1 byte, 4 cycles
16.. Zero Page Indirect Indexed with y
(zp),y
ADC, AND, CMP, EOR, LDA, ORA,
SBC, STA
8 OpCodes, 1 byte, 4, 5 and 6 cycles
(6)
(1)