伏夷非征番,

Some 8051 Machine Codes and Examples

Department of Computer Science and Information Engineering, Chaoyang University of Technology

朝陽科技大學資工系

Speaker: Fuw-Yi Yang

伏夷非征番,

道德經 察政章(Chapter 58)

者潛藏也

道紀章(Chapter 14) 道無形象, 視之不可見者曰

Some 8051 Machine Codes

2 2 2 2 2 2

Cycles

2 R0, radd (8 bits)

DJNZ D8

2 A, #n

ADD 24

2 R1, radd (8 bits)

DJNZ D9

2 R1, #n

MOV 79

2 R0, #n

MOV 78

2 A, #n

MOV 74

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 2 1 1 3 2 1

Cycles

1 A

RR 03

1

@R0 INC

06

1

@R1 INC

07

1 R0

INC 08

2 add

INC 05

1 A

INC 04

1 R1~R7

INC 09~0F

3 ladd (16 bits)

LJMP 02

2 sadd (11 bits)

AJMP 01

1 NOP

00

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 1 1 1 2 2 2

Cycles

1 A

RRC 13

1

@R0 DEC

16

1

@R1 DEC

17

1 R0

DEC 18

1 add

DEC 15

1 A

DEC 14

1 R1~R7

DEC 19~1F

3 ladd (16 bits)

LCALL 12

2 sadd (11 bits)

ACALL 11

3 b, radd (8 bits)

JBC 10

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 1 1 1 2 2 2

Cycles

1 A

RL 23

1 A, @R0

ADD 26

1 A, @R1

ADD 27

1 A, R0

ADD 28

2 A, add

ADD 25

2 A, #n

ADD 24

1 A, R1~R7

ADD 29~2F

1 RET

22

2 sadd (11 bits)

AJMP 21

3 b, radd (8 bits)

JB 20

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 1 1 1 2 2 2

Cycles

1 A

RLC 33

1 A, @R0

ADDC 36

1 A, @R1

ADDC 37

1 A, R0

ADDC 38

2 A, add

ADDC 35

2 A, #n

ADDC 34

1 A, R1~R7

ADDC 39~3F

1 RETI

32

2 sadd (11 bits)

ACALL 31

3 b, radd (8 bits)

JNB 30

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 1 1 2 1 2 2

Cycles

3 add, #n

ORL 43

1 A, @R0

ORL 46

1 A, @R1

ORL 47

1 A, R0

ORL 48

2 A, add

ORL 45

2 A, #n

ORL 44

1 A, R1~R7

ORL 49~4F

2 add, A

ORL 42

2 sadd (11 bits)

AJMP 41

2 radd (8 bits)

JC 40

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 1 1 2 1 2 2

Cycles

3 add, #n

ANL 53

1 A, @R0

ANL 56

1 A, @R1

ANL 57

1 A, R0

ANL 58

2 A, add

ANL 55

2 A, #n

ANL 54

1 A, R1~R7

ANL 59~5F

2 add, A

ANL 52

2 sadd (11 bits)

ACALL 51

2 radd (8 bits)

JNC 50

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 1 1 2 1 2 2

Cycles

3 add, #n

XRL 63

1 A, @R0

XRL 66

1 A, @R1

XRL 67

1 A, R0

XRL 68

2 A, add

XRL 65

2 A, #n

XRL 64

1 A, R1~R7

XRL 69~6F

2 add, A

XRL 62

2 sadd (11 bits)

AJMP 61

2 radd (8 bits)

JZ 60

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 2 1 2 1 2 2

Cycles

1

@A + DPTR JMP

73

2

@R0, #n MOV

76

2

@R1, #n MOV

77

2 R0, #n

MOV 78

3 add, #n

MOV 75

2 A, #n

MOV 74

2 R1~R7 , #n

MOV 79~7F

2 C, b

ORL 72

2 sadd (11 bits)

ACALL 71

2 radd (8 bits)

JNZ 70

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

2 2 2 2 2 4 2 2 2 2

Cycles

1 A, @A + DPTR

MOVC 83

2 add, @R0

MOV 86

2 add, @R1

MOV 87

2 add, R0

MOV 88

3 add, add

MOV 85

1 AB

DIV 84

2 add, R1~R7

MOV 89~8F

2 C, b

ANL 82

2 sadd (11 bits)

AJMP 81

2 radd (8 bits)

SJMP 80

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 1 1 2 2 2 2

Cycles

1 A, @A + DPTR

MOVC 93

1 A, @R0

SUBB 96

1 A, @R1

SUBB 97

1 A, R0

SUBB 98

2 A, add

SUBB 95

2 A, #n

SUBB 94

1 A, R1~R7

SUBB 99~3F

2 b, C

MOV 92

2 sadd (11 bits)

ACALL 91

3 DPTR, #nn

MOV 90

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

2 2 2 2 4 2 1 2 2

Cycles

1 DPTR

INC A3

2

@R0, add MOV

A6

2

@R1, add MOV

A7

2 R0, add

MOV A8

unused A5

1 AB

MUL A4

2 R1~R7, add

MOV A9~AF

2 C, b

MOV A2

2 sadd (11 bits)

AJMP A1

2 C, b

ORL A0

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 2 2 1 1 2 2

Cycles

1 C

CPL B3

3

@R0, #n, radd (8 bits) CJNE

B6

3

@R1, #n, radd (8 bits) CJNE

B7

3 R0, #n, radd (8 bits)

CJNE B8

3 A, add, radd (8 bits)

CJNE B5

3 A, #n, radd (8 bits)

CJNE B4

3 R1~R7 , #n, radd (8 bits)

CJNE B9~BF

2 b

CPL B2

2 sadd (11 bits)

ACALL B1

2 C, b

ANL B0

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 1 1 1 1 2 2

Cycles

1 C

CLR C3

1 A, @R0

XCH C6

1 A, @R1

XCH C7

1 A, R0

XCH C8

2 A, add

XCH C5

1 A

SWAP C4

1 A, R1~R7

XCH C9~CF

2 b

CLR C2

2 sadd (11 bits)

AJMP C1

2 add

PUSH C0

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

2 2 1 1 2 1 1 1 2 2

Cycles

1 C

SETB D3

1 A, @R0

XCHD D6

1 A, @R1

XCHD D7

2 R0, radd (8 bits)

DJNZ D8

3 add, radd (8 bits)

DJNZ D5

1 A

DA D4

2 R1~R7, radd (8 bits)

DJNZ D9~DF

2 b

SETB D2

2 sadd (11 bits)

ACALL D1

2 add

POP D0

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 1 1 2 2 2 2

Cycles

1 A, @R1

MOVX E3

1 A, @R0

MOV E6

1 A, @R1

MOV E7

1 A, R0

MOV E8

2 A, add

MOV E5

1 A

CLR E4

1 A, R1~R7

MOV E9~EF

1 A, @R0

MOVX E2

2 sadd (11 bits)

AJMP E1

1 A, @DPTR

MOVX E0

Bytes Operands

Mnemonic Code

Some 8051 Machine Codes

1 1 1 1 1 1 2 2 2 2

Cycles

1

@R1, A MOVX

F3

1

@R0, A MOV

F6

1

@R1, A MOV

F7

1 R0, A

MOV F8

2 Add, A

MOV F5

1 A

CPL F4

1 R1~R7, A

MOV F9~FF

1

@R0, A MOVX

F2

2 sadd (11 bits)

ACALL F1

1

@DPTR, A MOVX

F0

Bytes Operands

Mnemonic Code