Instruction Set 8085
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Instruction Set 8085

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Short presentation on instruction set of 8085 processor

Short presentation on instruction set of 8085 processor

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  • Page 4.13
  • 4.17
  • Page number 4.23
  • Page number 4.23
  • Page number 4.21
  • 4.17
  • Page number 4.25
  • Page number 4.25

Instruction Set 8085 Presentation Transcript

  • 1.
    • CHAPTER 4
    • SECTION 4.8
    Instruction set 8085
  • 2.
    • DATA TRANSFER GROUP INSTRUCTION.
    • ARITHMETIC GROUP INSTRUCTION.
    • LOGICAL GROUP INSTRUCTION.
    • BRANCHING GROUP INSTRUCTION.
    Classification of instruction set:
  • 3.
    • 1 BYTE INSTRUCTION:
      • MOV C,A
      • ADD B
    • 2 BYTE INSTRUCTION:
      • MVI A, 8-bit data
      • OUT 8-bit address
    • 3 BYTE INSTRUCTION
      • LDA 2050
      • STAX H
    Length of Instructions:
  • 4.
    • SOURCE TO DESTINATION
    • LENGTH OF INSTRUCTION
    • EXAMPLES:
      • LDAX Rp
      • STAX Rp
      • LXI Rp, 16 bit immediate data
    Data transfer group:
  • 5.
    • LENGTH OF INSTRUCTION
    • FUNCTION
    • FLAGS AFFECTED
    • T-STATE
    LDAX Rp
  • 6.
    • LDAX B
    Before execution A 00 B 20 C 01 D E H L 2000 2001 50 2002
  • 7.
    • LDAX B
    After execution A 50 B 20 C 01 D E H L 2000 2001 50 2002
  • 8.
    • LENGTH OF INSTRUCTION
    • FUNCTION
    • FLAGS AFFECTED
    • T-STATE
    STAX Rp
  • 9.
    • STAX D
    Before execution A 20 B C D 25 E 05 H L 2504 2505 10 2506
  • 10.
    • STAX D
    After execution A 20 B C D 25 E 05 H L 2504 2505 20 2506
  • 11.
    • LENGTH OF INSTRUCTION
    • FUNCTION
    • FLAGS AFFECTED
    • T-STATE
    LXI Rp, 16 bit immediate data
  • 12.
    • LXI B, 1507H
    Before execution A B 00 C 00 D E H L 2504 2505 2506
  • 13.
    • LXI B, 1507H
    After execution A B 15 C 07 D E H L 2504 2505 2506
  • 14.
    • PERFORMS ARITHMETIC OPERATIONS.
    • LENGTH OF INSTRUCTION.
    • EXAMPLES:
      • ADD Rs
      • INR R
      • DCR R
    Arithmetic group
  • 15.
    • LENGTH OF INSTRUCTION
    • FUNCTION
    • FLAGS AFFECTED
    • T-STATE
    ADD Rs
  • 16.
    • ADD B
    Before execution A 93 B B C 7 D E H L 2504 2505 2506
  • 17.
    • ADD B
    After execution A 4A B B C 7 D E H L 2504 2505 2506
  • 18. Procedure
  • 19.
    • LENGTH OF INSTRUCTION
    • FUNCTION
    • FLAGS AFFECTED
    • T-STATE
    INR R
  • 20.
    • INR R
    Before execution A 93 B C D B E 7 H L 2504 2505 2506