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INSTRUCTION SET OPCODES AND CLOCK CYCLES
D-20
Table D-4. Mnemonic Encoding Matrix (Left Half)
x0 x1 x2 x3 x4 x5 x6 x7
0x
ADD
b,f,r/m
ADD
w,f,r/m
ADD
b,t,r/m
ADD
w,t,r/m
ADD
b,ia
ADD
w,ia
PUSH
ES
POP
ES
1x
ADC
b,f,r/m
ADC
w,f,r/m
ADC
b,t,r/m
ADC
w,t,r/m
ADC
b,i
ADC
w,i
PUSH
SS
POP
SS
2x
AND
b,f,r/m
AND
w,f,r/m
AND
b,t,r/m
AND
w,t,r/m
AND
b,i
AND
w,i
SEG
=ES
DAA
3x
XOR
b,f,r/m
XOR
w,f,r/m
XOR
b,t,r/m
XOR
w,t,r/m
XOR
b,i
XOR
w,i
SEG
=SS
AAA
4x
INC
AX
INC
CX
INC
DX
INC
BX
INC
SP
INC
BP
INC
SI
INC
DI
5x
PUSH
AX
PUSH
CX
PUSH
DX
PUSH
BX
PUSH
SP
PUSH
BP
PUSH
SI
PUSH
DI
6x
PUSHA POPA BOUND
w,f,r/m
7x
JO JNO JB/
JNAE/
JC
JNB/
JAE/
JNC
JE/
JZ
JNE/
JNZ
JBE/
JNA
JNBE/
JA
8x
Immed
b,r/m
Immed
w,r/m
Immed
b,r/m
Immed
is,r/m
TEST
b,r/m
TEST
w,r/m
XCHG
b,r/m
XCHG
w,r/m
9x
NOP
(XCHG)
AX
XCHG
CX
XCHG
DX
XCHG
BX
XCHG
SP
XCHG
BP
XCHG
SI
XCHG
DI
Ax
MOV
m→AL
MOV
m→AX
MOV
AL→m
MOV
AX→m
MOVS MOVS CMPS CMPS
Bx
MOV
i→AL
MOV
i→CL
MOV
i→DL
MOV
i→BL
MOV
i→AH
MOV
i→CH
MOV
i→DH
MOV
i→BH
Cx
Shift
b,i
Shift
w,i
RET
(i+SP)
RET LES LDS MOV
b,i,r/m
MOV
w,i,r/m
Dx
Shift
b
Shift
w
Shift
b,v
Shift
w,v
AAM AAD XLAT
Ex
LOOPNZ/
LOOPNE
LOOPZ/
LOOPE
LOOP JCXZ IN IN OUT OUT
Fx
LOCK REP REP
z
HLT CMC Grp1
b,r/m
Grp1
w,r/m
NOTE: Table D-5 defines abbreviations used in this matrix. Shading indicates reserved opcodes.