Computer Architecture: Instruction Sets and Cycles
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Questions and Answers

Which of the following statements about instruction sets is true?

  • Instruction sets neither allow register nor memory operands to be used in addressing modes.
  • Instruction sets only allow register operands to be used in addressing modes.
  • Instruction sets permit direct memory addressing as operands.
  • Instruction sets allow both register and memory operands to be used in addressing modes. (correct)

    • What is the primary constraint on operands in instruction sets?

  • Memory operands cannot be used in addressing modes. (correct)
  • Register operands cannot be used in addressing modes.
  • Both memory and register operands cannot be used in addressing modes.
  • Only immediate operands can be used in addressing modes.

    • What is the number of stages in the instruction cycle?

  • Four stages: fetch, decode, execute, and store
  • Two stages: fetch and execute
  • One stage: execute
  • Three stages: fetch, decode, and execute (correct)

    • What is the primary purpose of the fetch stage in the instruction cycle?

    <p>To retrieve the instruction from memory</p> Signup and view all the answers

    What is the relationship between instruction sets and addressing modes?

    <p>Instruction sets determine the addressing modes</p> Signup and view all the answers

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