8051 Instruction Set
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A short presentation on instruction set of MC-8051
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8051 Instruction Set
- 1. The 8051 Microcontroller: Instruction Set
- 6. Before execution ADD A, R3 A 13 B R0 R1 R2 R3 31 R4 R5 R6 R7 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 7. After execution ADD A, R3 A 44 B R0 R1 R2 R3 31 R4 R5 R6 R7 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 1
- 9. Before execution INC A A 1F B R0 R1 R2 R3 R4 R5 R6 R7 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 10. After execution INC A A 20 B R0 R1 R2 R3 R4 R5 R6 R7 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 13. Before execution MOV A, R7 A 00 B R0 R1 R2 R3 R4 R5 R6 R7 14 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 14. After execution MOV A, R7 A 14 B R0 R1 R2 R3 R4 R5 R6 R7 14 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 16. Before execution XCH A, R5 A 27 B R0 R1 R2 R3 R4 R5 72 R6 R7 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 17. After execution XCH A, R5 A 72 B R0 R1 R2 R3 R4 R5 27 R6 R7 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 20. Before execution ANL A, R2 A 10 B R0 R1 R2 01 R3 R4 R5 R6 R7 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 21. After execution ANL A, R2 A 00 B R0 R1 R2 01 R3 R4 R5 R6 R7 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 23. Before execution CPL A A FF B R0 R1 R2 R3 R4 R5 R6 R7 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 24. After execution CPL A A 00 B R0 R1 R2 R3 R4 R5 R6 R7 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 30. Before execution CLR C A FF B R0 R1 R2 R3 R4 R5 R6 R7 CY AC F0 RS1 RS0 OV - P 1 0 - 1 1 0 - 0
- 31. After execution CLR C A FF B R0 R1 R2 R3 R4 R5 R6 R7 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 33. Before execution CPL C A FF B R0 R1 R2 R3 R4 R5 R6 R7 CY AC F0 RS1 RS0 OV - P 0 0 - 1 1 0 - 0
- 34. After execution CPL C A FF B R0 R1 R2 R3 R4 R5 R6 R7 CY AC F0 RS1 RS0 OV - P 1 0 - 1 1 0 - 0
Hinweis der Redaktion
- No flags affected.
- 1. Two operands source and destination. 2. MOVC instruction moves a byte from the code or program memory to the accumulator 3. Length 1 2 n 3 bytes 4. if MOVX present, transfer to/from external memory
- 15 combos of source n destination code is possible