W65C02S Datasheet, PDF (32/40 Pages) List of Unclassifed Manufacturers – Microprocessor

The Western Design Center, Inc.
Address Mode
1a. Absolute a
ADC, AND, BIT, CMP, CPX, CPY, EOR,
LDA, LDX, LDY, ORA, SBC, STA, STX,
STY, STZ
16 OpCodes, 3 bytes, 4&5 cycles
1b. Absolute (R-M-W) a
ASL, DEC, INC, LSR, ROL, ROR, TRB,
TSB
8 OpCodes, 3 bytes, 6 cycles
1c. Absolute (JUMP) a
JMP (4C)
1 OpCode, 3 bytes, 3 cycles
1d. Absolute (JUMP to subroutine) a
JSR (20)
1 OpCode, 3 bytes, 3 cycles
(different order from N6502)
2. Absolute Indexed Indirect (a, x)
JMP (7C)
1 OpCode, 3 bytes, 6 cycles
3a. Absolute , X a, x
ADC, AND, BIT, CMP, EOR, LDA, LDY,
ORA, SBC, STA, STZ
11 OpCodes, 3 bytes, 4,5 and 6 cycles
3b. Absolute, X(R-M-W) a, x
ASL, DEC, INC, LSR, ROL, ROR
6 OpCodes, 3 bytes, 7 cycles
4. Absolute, Y a, y
ADC, AND, CMP, EOR, LDA, LDX, ORA,
SBC, STA
9 OpCodes, 3 bytes, 4,5 and 6 cycles
5. Absolute Indirect (a)
JMP (6C)
1 OpCode, 3 bytes, 6 cycles
6. Accumulator A
ASL, DEC, INC, LSR, ROL, ROR
6 OpCodes, 1 byte, 2 cycles
7. Immediate #
ADC, AND, BIT, CLR, CMP, CPY, CPX,
EOR, LDA, LDX, LDY, ORA, SBC
13 OpCodes, 2 bytes, 2 and 5 cycles
8a. Implied i
CLC, CLD, CLI, CLV, DEX, DEY, INX,
INY, NOP, SEC, SED, SEI, TAX. TAY,
TXA. TSX. TXS, TYA
18 OpCodes, 1 byte, 2 cycles
Table 6-5 Instruction Timing Chart
Note Cycle VPB MLB SYNC Address Bus
1
1
1
1
(6)
2
1
1
0
3
1
1
0
4
1
1
0
PC
PC+1
PC+2
AA
1
1
1
1
2
1
1
0
3
1
1
0
4
1
0
0
5
1
0
0
6
1
0
0
1
1
1
1
2
1
1
0
3
1
1
0
1
1
1
1
1
1
1
1
2
1
1
0
3
1
1
0
4
1
1
0
5
1
1
0
6
1
1
0
1
1
1
1
1
1
1
1
2
1
1
0
(1)
3
1
1
0
4
1
1
0
5
1
1
0
6
1
1
0
1
1
1
1
1
1
1
1
2
1
1
0
(1)
3
1
1
0
(6)
4
1
1
0
(1)
1
1
1
1
2
1
1
0
3
1
1
0
4
1
1
0
5
1
0
0
6
1
0
0
7
1
0
0
1
1
1
1
(1)
2
1
1
0
(6)
3
1
1
0
4
1
1
0
1
1
1
1
2
1
1
0
3
1
1
0
4
1
1
0
5
1
1
0
6
1
1
0
1
1
1
1
1
1
1
1
2
1
1
0
PC
PC+1
PC+2
AA
AA
AA
PC
PC+1
PC+2
New PC
PC
PC+1
S
S
S+1
PC+2
New PC
PC
PC+1
PC+2
PC+2
AA+X
AA+X+1
New PC
PC
PC+1
PC+2
AA+X
PC
PC+1
PC+2
AAH,AAL+X
AA+X
AA+X+1
AA+X
PC
PC+1
PC+2
AA+Y
PC
PC+1
PC+2
PC+2
0,AA
0,AA+1
New PC
PC
PC+1
1
1
1
1
(6)
2
1
1
0
PC
PC+1
1
1
1
1
2
1
1
0
PC
PC+1
W65C02S Datasheet
Data Bus
OpCode
AAL
AAH
Data
OpCode
AAL
AAH
Data
IO
Data
OpCode
New PCL
New PCH
New OpCode
OpCode
New PCL
IO
PCH
PCL
New PCH
New OpCode
OpCode
AAL
AAH
IO
New PCL
New PCH
OpCode
OpCode
AAL
AAH
Data
OpCode
AAL
AAH
IO
Data
IO
Data
OpCode
AAL
AAH
Data
OpCode
AAL
AAH
IO
New PCL
New PCH
OpCode
OpCode
IO
OpCode
ID
RWB
1
1
1
1/0
1
1
1
1
1
0
1
1
1
1
1
1
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1/0
1
1
1
1
1
1
0
1
1
1
1/0
1
1
1
1
1
1
1
1
1
1
1
OpCode
1
IO
1
The Western Design Center, Inc.
W65C02S Datasheet
32