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1 byte opcodes
© 1996-1997 by Christian Ludloff. Last updated on Sunday, 16-Nov-97 19:30:00 EST.
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| available opcode tables |
1 byte opcodes |
2 byte opcodes |
group #0..A opcodes |
ESC (=FPU) opcodes |
opcode encoding |
16bit modR/M byte |
32bit modR/M byte |
32bit SIB byte |
|---|
| 1 byte opcodes |
x0h |
x1h | x2h | x3h | x4h | x5h | x6h | x7h |
|---|---|---|---|---|---|---|---|---|
| 0xh |
ADD Eb,Gb |
ADD Ev,Gv |
ADD Gb,Eb |
ADD Gv,Ev |
ADD AL,Ib |
ADD eAX,Iv |
PUSH ES |
POP ES |
| 1xh |
ADC Eb,Gb |
ADC Ev,Gv |
ADC Gb,Eb |
ADC Gv,Ev |
ADC AL,Ib |
ADC eAX,Iv |
PUSH SS |
POP SS |
| 2xh |
AND Eb,Gb |
AND Ev,Gv |
AND Gb,Eb |
AND Gv,Ev |
AND AL,Ib |
AND eAx,Iv |
ES: | DAA |
| 3xh |
XOR Eb,Gb |
XOR Ev,Gv |
XOR Gb,Eb |
XOR Gv,Ev |
XOR AL,Ib |
XOR eAX,Iv |
SS: | AAA |
| 4xh |
INC eAX |
INC eCX |
INC eDX |
INC eBX |
INC eSP |
INC eBP |
INC eSI |
INC eDI |
| 5xh |
PUSH eAX |
PUSH eCX |
PUSH eDX |
PUSH eBX |
PUSH eSP |
PUSH eBP |
PUSH eSI |
PUSH eDI |
| 6xh |
PUSHA PUSHAD (80186+) |
POPA POPAD (80186+) |
BOUND Gv,Ma (80186+) |
ARPL Ew,Rw (80286+) |
FS: (80386+) |
GS: (80386+) |
OPSIZE: (80386+) |
ADDRSIZE: (80386+) |
| 7xh |
JO Jb |
JNO Jb |
JB Jb |
JNB Jb |
JZ Jb |
JNZ Jb |
JBE Jb |
JNBE Jb |
| 8xh |
group #1 Eb,Ib |
group #1 Ev,Iv |
group #1* Eb,Ib |
group #1 Ev,Ib |
TEST Eb,Gb |
TEST Ev,Gv |
XCHG Eb,Gb |
XCHG Ev,Gv |
| 9xh |
NOP | XCHG eCX,eAX |
XCHG eDX,eAX |
XCHG eBX,eAX |
XCHG eSP,eAX |
XCHG eBP,eAX |
XCHG eSI,eAX |
XCHG eDI,eAX |
| Axh |
MOV AL,Ob |
MOV eAX,Ov |
MOV Ob,AL |
MOV Ov,eAX |
MOVSB Xb,Yb |
MOVSW/D Xv,Yv |
CMPSB Xb,Yb |
CMPSW/D Xv,Yv |
| Bxh |
MOV AL,Ib |
MOV CL,Ib |
MOV DL,Ib |
MOV BL,Ib |
MOV AH,Ib |
MOV CH,Ib |
MOV DH,Ib |
MOV BH,Ib |
| Cxh |
group #2 Eb,Ib |
group #2 Ev,Ib |
RET near Iw |
RET near | LES Gv,Mp |
LDS Gv,Mp |
MOV Eb,Ib | MOV Ev,Iv |
| Dxh |
group #2 Eb,1 |
group #2 Ev,1 |
group #2 Eb,CL |
group #2 Ev,CL |
AAM | AAD | SETALC | XLAT |
| Exh |
LOOPNE Jb |
LOOPE Jb |
LOOP Jb |
JCXZ Jb |
IN AL,Ib |
IN eAX,Ib |
OUT Ib,AL |
OUT Ib,eAX |
| Fxh |
LOCK | INT1 (ICEBP) (80386+) |
REPNE | REP REPE |
HLT | CMC | group #3 Eb |
group #3 Ev |
| 1 byte opcodes |
x8h |
x9h | xAh | xBh | xCh | xDh | xEh | xFh |
|---|---|---|---|---|---|---|---|---|
| 0xh |
OR Eb,Gb |
OR Ev,Gv |
OR Gb,Eb |
OR Gv,Ev |
OR AL,Ib |
OR eAX,Iv |
PUSH CS |
2 byte opcodes (80286+) |
| 1xh |
SBB Eb,Gb |
SBB Ev,Gv |
SBB Gb,Eb |
SBB Gv,Ev |
SBB AL,Ib |
SBB eAX,Iv |
PUSH DS |
POP DS |
| 2xh |
SUB Eb,Gb |
SUB Ev,Gv |
SUB Gb,Eb |
SUB Gv,Ev |
SUB AL,Ib |
SUB eAX,Iv |
CS: | DAS |
| 3xh |
CMP Eb,Gb |
CMP Ev,Gv |
CMP Gb,Eb |
CMP Gv,Ev |
CMP AL,Ib |
CMP eAX,Iv |
DS: | AAS |
| 4xh |
DEC eAX |
DEC eCX |
DEC eDX |
DEC eBX |
DEC eSP |
DEC eBP |
DEC eSI |
DEC eDI |
| 5xh |
POP eAX |
POP eCX |
POP eDX |
POP eBX |
POP eSP |
POP eBP |
POP eSI |
POP eDI |
| 6xh |
PUSH Iv (80186+) |
IMUL Gv,Ev,Iv (80186+) |
PUSH Ib (80186+) |
IMUL Gv,Ev,Ib (80186+) |
INSB Yb,DX (80186+) |
INSW/D Yv,DX (80186+) |
OUTSB DX,Xb (80186+) |
OUTSW/D DX,Xv (80186+) |
| 7xh |
JS Jb |
JNS Jb |
JP Jb |
JNP Jb |
JL Jb |
JNL Jb |
JLE Jb |
JNLE Jb |
| 8xh |
MOV Eb,Gb |
MOV Ev,Gv |
MOV Gb,Eb |
MOV Gv,Ev |
MOV Ew,Sw |
LEA Gv,M |
MOV Sw,Ew |
POP Ev |
| 9xh |
CBW CWDE (8088/386+) |
CWD CDQ (8088/386+) |
CALL Ap |
WAIT | PUSHF Fv |
POPF Fv |
SAHF | LAHF |
| Axh |
TEST AL,Ib |
TEST eAX,Iv |
STOSB Yb,AL |
STOSW/D Yv,eAX |
LODSB AL,Xb |
LODSW/D eAX,Xv |
SCASB AL,Yb |
SCASW/D eAX,Yv |
| Bxh |
MOV eAX,Iv |
MOV eCX,Iv |
MOV eDX,Iv |
MOV eBX,Iv |
MOV eSP,Iv |
MOV eBP,Iv |
MOV eSI,Iv |
MOV eDI,Iv |
| Cxh |
ENTER Iw,Ib (80186+) |
LEAVE (80186+) |
RET far Iw |
RET far | INT3 | INT Ib |
INTO | IRET |
| Dxh |
ESC 0 |
ESC 1 |
ESC 2 |
ESC 3 |
ESC 4 |
ESC 5 |
ESC 6 |
ESC 7 |
| Exh |
CALL Jv |
JMP Jv |
JMP Ap |
JMP Jb |
IN AL,DX |
IN eAX,DX |
OUT DX,AL |
OUT DX,eAX |
| Fxh |
CLC | STC | CLI | STI | CLD | STD | group #4 INC/DEC |
group #5 INC/DEC etc. |
The marked * opcodes are only aliases to other opcodes.
