65CE02 Opcode matrix:

imm = #$00
imw = #$0000
zp = $00
zpx = $00,X
zpy = $00,Y
izx = ($00,X)
izy = ($00),Y
izz = ($00),Z
isy = ($00,S),Y
abs = $0000
abx = $0000,X
aby = $0000,Y
ind = ($0000)
iax = ($0000,X)
rel = $0000 (8 bits PC-relative)
rell = $0000 (16 bits PC-relative)
  x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF
0x BRK
7		 ORA
izx 6		 CLE
2		 SEE
2		 TSB
zp 5		 ORA
zp 3		 ASL
zp 5		 RMB0
zp 5		 PHP
3		 ORA
imm 2		 ASL
2		 TSY
2		 TSB
abs 6		 ORA
abs 4		 ASL
abs 6		 BBR0
rel 2*
1x BPL
rel 2*		 ORA
izy 5*		 ORA
izz 5		 BPL
rell 3*		 TRB
zp 5		 ORA
zpx 4		 ASL
zpx 6		 RMB1
zp 5		 CLC
2		 ORA
aby 4*		 INC
2		 INZ
2		 TRB
abs 6		 ORA
abx 4*		 ASL
abx 6*		 BBR1
rel 2*
2x JSR
abs 6		 AND
izx 6		 JSR
iab 6		 JSR
iax 6		 BIT
zp 3		 AND
zp 3		 ROL
zp 5		 RMB2
zp 5		 PLP
4		 AND
imm 2		 ROL
2		 TYS
2		 BIT
abs 4		 AND
abs 4		 ROL
abs 6		 BBR2
rel 2*
3x BMI
rel 2*		 AND
izy 5*		 AND
izz 5		 BMI
rell 3*		 BIT
zpx 4		 AND
zpx 4		 ROL
zpx 6		 RMB3
zp 5		 SEC
2		 AND
aby 4*		 DEC
2		 DEZ
2		 BIT
abx 4*		 AND
abx 4*		 ROL
abx 6*		 BBR3
rel 2*
4x RTI
6		 EOR
izx 6		 NEG
2		 ASR
2		 ASR
zp 5		 EOR
zp 3		 LSR
zp 5		 RMB4
zp 5		 PHA
3		 EOR
imm 2		 LSR
2		 TAZ
2		 JMP
abs 3		 EOR
abs 4		 LSR
abs 6		 BBR4
rel 2*
5x BVC
rel 2*		 EOR
izy 5*		 EOR
izz 5		 BVC
rell 3*		 ASR
zpx 6		 EOR
zpx 4		 LSR
zpx 6		 RMB5
zp 5		 CLI
2		 EOR
aby 4*		 PHY
3		 TAB
2		 MAP
2		 EOR
abx 4*		 LSR
abx 6*		 BBR5
rel 2*
6x RTS
6		 ADC
izx 6		 RTS
imm 6		 BSR
rell 3*		 STZ
zp 3		 ADC
zp 3		 ROR
zp 5		 RMB6
zp 5		 PLA
4		 ADC
imm 2		 ROR
2		 TZA
2		 JMP
ind 6		 ADC
abs 4		 ROR
abs 6		 BBR6
rel 2*
7x BVS
rel 2*		 ADC
izy 5*		 ADC
izz 5		 BVS
rell 3*		 STZ
zpx 4		 ADC
zpx 4		 ROR
zpx 6		 RMB7
zp 5		 SEI
2		 ADC
aby 4*		 PLY
4		 TBA
2		 JMP
iax 6		 ADC
abx 4*		 ROR
abx 6*		 BBR7
rel 2*
8x BRA
rel 3*		 STA
izx 6		 STA
isy 7		 BRA
rell 4		 STY
zp 3		 STA
zp 3		 STX
zp 3		 SMB0
zp 5		 DEY
2		 BIT
imm 2		 TXA
2		 STY
abx 5		 STY
abs 4		 STA
abs 4		 STX
abs 4		 BBS0
rel 2*
9x BCC
rel 2*		 STA
izy 6		 STA
izz 5		 BCC
rell 3*		 STY
zpx 4		 STA
zpx 4		 STX
zpy 4		 SMB1
zp 5		 TYA
2		 STA
aby 5		 TXS
2		 STX
aby 5		 STZ
abs 4		 STA
abx 5		 STZ
abx 5		 BBS1
rel 2*
Ax LDY
imm 2		 LDA
izx 6		 LDX
imm 2		 LDZ
imm 2		 LDY
zp 3		 LDA
zp 3		 LDX
zp 3		 SMB2
zp 5		 TAY
2		 LDA
imm 2		 TAX
2		 LDZ
abs 4		 LDY
abs 4		 LDA
abs 4		 LDX
abs 4		 BBS2
rel 2*
Bx BCS
rel 2*		 LDA
izy 5*		 LDA
izz 5		 BCS
rell 3*		 LDY
zpx 4		 LDA
zpx 4		 LDX
zpy 4		 SMB3
zp 5		 CLV
2		 LDA
aby 4*		 TSX
2		 LDZ
abx 4*		 LDY
abx 4*		 LDA
abx 4*		 LDX
aby 4*		 BBS3
rel 2*
Cx CPY
imm 2		 CMP
izx 6		 CPZ
imm 2		 DEW
zp 6		 CPY
zp 3		 CMP
zp 3		 DEC
zp 5		 SMB4
zp 5		 INY
2		 CMP
imm 2		 DEX
2		 ASW
abs 7		 CPY
abs 4		 CMP
abs 4		 DEC
abs 6		 BBS4
rel 2*
Dx BNE
rel 2*		 CMP
izy 5*		 CMP
izz 5		 BNE
rell 3*		 CPZ
zp 3		 CMP
zpx 4		 DEC
zpx 6		 SMB5
zp 5		 CLD
2		 CMP
aby 4*		 PHX
3		 PHZ
3		 CPZ
abs 4		 CMP
abx 4*		 DEC
abx 6*		 BBS5
rel 2*
Ex CPX
imm 2		 SBC
izx 6		 LDA
isy 7		 INW
zp 6		 CPX
zp 3		 SBC
zp 3		 INC
zp 5		 SMB6
zp 5		 INX
2		 SBC
imm 2		 NOP
2		 ROW
abs 7		 CPX
abs 4		 SBC
abs 4		 INC
abs 6		 BBS6
rel 2*
Fx BEQ
rel 2*		 SBC
izy 5*		 SBC
izz 5		 BEQ
rell 3*		 PHW
imw 4		 SBC
zpx 4		 INC
zpx 6		 SMB7
zp 5		 SED
2		 SBC
aby 4*		 PLX
4		 PLZ
4		 PHW
abs 4		 SBC
abx 4*		 INC
abx 6*		 BBS7
rel 2*

"*" : add 1 cycle if page boundary is crossed.
add 1 cycle if direct page register is non zero on direct page adressing modes.
add 1 cycle on conditional branches if taken.
add 1 cycle on these commands if D=1: ADC, SBC


A = Akkumulator
B = Bank-Register
X = X-Register
Y = Y-Register
Z = Z-Register
S = Stack-Pointer
P = Status-Register
+(S) = Stack-Pointer relative with pre-increment
(S)- = Stack-Pointer relative with post-decrement


These things have changed from 65C02 to 65CE02:

- new instructions.
- new adressing modes for a few instrucions.
- Z-Register is introduced.
- with the introduction of the Z-Register, also the IZP adressing mode has been changed to IZZ.

 65CE02 opcodes:
OpcodeFunction NVBDIZC
CPZZ-{adr} *    **
DECA:=A-1 *    * 
DEZZ:=Z-1 *    * 
DEW{adr}:={adr}-1 (16 bit) *    * 
INCA:=A+1 *    * 
INZZ:=Z+1 *    * 
INW{adr}:={adr}+1 (16 bit) *    * 
NEGA:=0-A *    * 
ASR{adr}:={adr}/2 *    **
ASW{adr}:={adr}*2 (16 bit) *    **
ROW{adr}:={adr}*2+C (16 bit) *    **
LDZZ:={adr} *    * 
STZ{adr}:=Z        
TABB:=A *    * 
TBAA:=B *    * 
TAZZ:=A *    * 
TZAA:=Z *    * 
TSYY:=S *    * 
TYSS:=Y        
PHW(S)-:={adr} (16 bit)        
PHX(S)-:=X        
PHY(S)-:=Y        
PHZ(S)-:=Z        
PLXX:=+(S) *    * 
PLYY:=+(S) *    * 
PLZZ:=+(S) *    * 
TRB{adr}:={adr} nand A      * 
TSB{adr}:={adr} or A      * 
CLEE:=0 ?        
SEEE:=1 ?        
BRAbranch always        
BSR(S)-:=PC / branch always        
BBRnbranch on bit n reset        
BBSnbranch on bit n set        
RMBn{adr}:={adr} nand 2^n      * 
SMBn{adr}:={adr} or 2^n      * 
MAP?        

Warning! Some information is based on 65C02 documents, others is just guessed. There might be some mistakes in here.


© 2009 Graham. Last change on 30.1.2009.