Question
Asked Oct 17, 2019

Convert the following machine language instructions into assembly language, EXPLAIN ALL STEPS, assuming that they were not generated by pseudo-ops:

            a) 82B7DE

          b) 04

          c) DF63DF

check_circleExpert Solution
Step 1

82B7DE:

  • The given machine language instruction is 82B7DE.
  • Its equivalent binary representation is 1000-0010 1011-0111 1101-1110.
  • The mnemonic equivalent code of 1000-raaa is ANDA.
    • Where, "r" represents "0".
    • And, "aaa" represents "010" (Indirect addressing mode).
  • The above given instruction is written in the Pep/9 assembly language as given below:

ANDA 0xB7DE,n

  • In the above given instruction,
    • "ANDA" represents the mnemonic equivalent for instruction “Bitwise AND to A”.
    • "0x" represents a hexadecimal constant.
    • "n" represents indirect addressing mode.
Step 2

04:

  • The given machine language instruction is 04.
  • Its equivalent binary representation is 0000-0100.
  • The above given instruction is written in the Pep/9 assembly language as given below:

MOVFLGA

  • In ...

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