指令集依照机器操作码、汇编助记符和汇编操作数来描述指令，遵循下列约定：

l reg8: 8位寄存器。

l reg16: 16位寄存器。

l mem8: 8位内存数值。

l mem16: 16位内存数值。

l immed8: 8位立即数值。

l immed16: 16位立即数值。

l immed32: 32位立即数值。

l segReg: 16位段寄存器。

机器操作码

汇编助记符和操作数

00

ADD reg8/mem8,reg8

01

ADD reg16/mem16,reg16

02

ADD reg8,reg8/mem8

03

ADD reg16,reg16/mem16

04

ADD AL,immed8

05

ADD AX,immed16

06

PUSH es

07

POP es

08

OR reg8/mem8,reg8

09

OR reg16/mem16,reg16

0A

OR reg8,reg8/mem8

0B

OR reg16,reg16/mem16

0C

OR al,immed8

0D

OR ax,immed16

0E

PUSH cs

0F

Not used

10

ADC reg8/mem8,reg8

11

ADC reg16/mem16,reg16

12

ADC reg8,reg8/mem8

13

ADC reg16,reg16/mem16

14

ADC al,immed8

15

ADC ax,immed16

16

PUSH ss

17

POP ss

18

SBB reg8/mem8,reg8

19

SBB reg16/mem16,reg16

1A

SBB reg8,reg8/mem8

1B

SBB reg16,reg16/mem16

1C

SBB al,immed8

1D

SBB ax,immed16

1E

PUSH ds

1F

POP ds

20

AND reg8/mem8,reg8

21

AND reg16/mem16,reg16

22

AND reg8,reg8/mem8

23

AND reg16,reg16/mem16

24

AND al,immed8

25

AND ax,immed16

26

Segment override

27

DAA

28

SUB reg8/mem8,reg8

29

SUB reg16/mem16,reg16

2A

SUB reg8,reg8/mem8

2B

SUB reg16,reg16/mem16

2C

SUB al,immed8

2D

SUB ax,immed16

2E

Segment override

2F

DAS

30

XOR reg8/mem8,reg8

31

XOR reg16/mem16,reg16

32

XOR reg8,reg8/mem8

33

XOR reg16,reg16/mem16

34

XOR al,immed8

35

XOR ax,immed16

36

Segment override

37

AAA

38

CMP reg8/mem8,reg8

39

CMP reg16/mem16,reg16

3A

CMP reg8,reg8/mem8

3B

CMP reg16,reg16/mem16

3C

CMP al,immed8

3D

CMP ax,immed16

3E

Segment override

3F

AAS

40

INC ax

41

INC cx

42

INC dx

43

INC bx

44

INC sp

45

INC bp

46

INC si

47

INC di

48

DEC ax

49

DEC cx

4A

DEC dx

4B

DEC bx

4C

DEC sp

4D

DEC bp

4E

DEC si

4F

DEC di

50

PUSH ax

51

PUSH cx

52

PUSH dx

53

PUSH bx

54

PUSH sp

55

PUSH bp

56

PUSH si

57

PUSH di

58

POP ax

59

POP cx

5A

POP dx

5B

POP bx

5C

POP sp

5D

POP bp

5E

POP si

5F

POP di

60

PUSHA

61

POPA

62

BOUND reg16/mem16,reg16

63

Not used

64

Not used

65

Not used

66

Not used

67

Not used

68

PUSH immed16

69

IMUL reg16/mem16,immed16

6A

PUSH immed8

6B

IMUL reg8/mem8,immed8

6C

INSB

6D

INSW

6E

OUTSB

6F

OUTSW

70

JO immed8

71

JNO immed8

72

JB immed8

73

JNB immed8

74

JZ immed8

75

JNZ immed8

76

JBE immed8

77

JA immed8

78

JS immed8

79

JNS immed8

7A

JP immed8

7B

JNP immed8

7C

JL immed8

7D

JNL immed8

7E

JLE immed8

7F

JG immed8

80

Table2 reg8

81

Table2 reg16

82

Table2 reg8

83

Table2 reg8, reg16

84

TEST reg8/mem8,reg8

85

TEST reg16/mem16,reg16

86

XCHG reg8,reg8

87

XCHG reg16,reg16

88

MOV reg8/mem8,reg8

89

MOV reg16/mem16,reg16

8A

MOV reg8,reg8/mem8

8B

MOV reg16,reg16/mem16

8C

MOV reg16/mem16,segReg

8D

LEA reg16,reg16/mem16

8E

MOV segReg,reg16/mem16

8F

POP reg16/mem16

90

NOP

91

XCHG ax,cx

92

XCHG ax,dx

93

XCHG ax,bx

94

XCHG ax,sp

95

XCHG ax,bp

96

XCHG ax,si

97

XCHG ax,di

98

CBW 99CWD

9A

CALL immed32

9B

WAIT

9C

PUSHF

9D

POPF

9E

SAHF

9F

LAHF

A0

MOV al,[mem8]

A1

MOV ax,[mem16]

A2

MOV [mem8],al

A3

MOV [mem16],ax

A4

MOVSB

A5

MOVSW

A6

CMPSB

A7

CMPSW

A8

TEST al,[mem8]

A9

TEST ax,[mem16]

AA

STOSB

AB

STOSW

AC

LODSB

AD

LODSW

AE

SCASB

AF

SCASW

B0

MOV al,immed8

B1

MOV cl,immed8

B2

MOV dl,immed8

B3

MOV bl,immed8

B4

MOV ah,immed8

B5

MOV ch,immed8

B6

MOV dh,immed8

B7

MOV bh,immed8

B8

MOV ax,immed16

B9

MOV cx,immed16

BA

MOV dx,immed16

BB

MOV bx,immed16

BC

MOV sp,immed16

BD

MOV bp,immed16

BE

MOV si,immed16

BF

MOV di,immed16

C0

Table1 reg8

C1

Table1 reg8, reg16

C2

RET immed16

C3

RET

C4

LES reg16/mem16,mem16

C5

LDS reg16/mem16,mem16

C6

MOV reg8/mem8,immed8

C7

MOV reg16/mem16,immed16

C8

ENTER immed16, immed8

C9

LEAVE

CA

RET immed16

CB

RET

CC

INT 3

CD

INT immed8

CE

INTO

CF

IRET

D0

Table1 reg8

D1

Table1 reg16

D2

Table1 reg8

D3

Table1 reg16

D4

AAM

D5

AAD

D6

Not used

D7

XLAT [bx]

D8

ESC immed8

D9

ESC immed8

DA

ESC immed8

DB

ESC immed8

DC

ESC immed8

DD

ESC immed8

DE

ESC immed8

DF

ESC immed8

E0

LOOPNE immed8

E1

LOOPE immed8

E2

LOOP immed8

E3

JCXZ immed8

E4

IN al,immed8

E5

IN ax,immed16

E6

OUT al,immed8

E7

OUT ax,immed16

E8

CALL immed16

E9

JMP immed16

EA

JMP immed32

EB

JMP immed8

EC

IN al,dx

ED

IN ax,dx

EE

OUT al,dx

EF

OUT ax,dx

F0

LOCK

F1

Not used

F2

REPNE

F3

REP

F4

HLT

F5

CMC

F6

Table3 reg8

F7

Table3 reg16

F8

CLC

F9

STC

FA

CLI

FB

STI

FC

CLD

FD

STD

FE

Table4 reg8

FF

Table4 reg16

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原文链接：https://blog.csdn.net/liqiang981/java/article/details/51895009