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Two-phase Instruction Execution and Branching in Processors
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Two-phase Instruction Execution and Branching in Processors

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Questions and Answers

Which type of branching instruction transfers the program sequence to a memory address based on a condition?

  • Jump instructions (correct)
  • Branch instructions
  • Return instructions
  • Call instructions

    • What is the purpose of the PC in a computer program execution?

  • Execute the current instruction
  • Fetch the next instruction from memory
  • Increment the memory address of the current instruction by 4 (correct)
  • Switch execution to a different instruction sequence

    • What is the role of a call instruction in a computer program?

  • Execute an instruction at a different memory address (correct)
  • Switch execution to a different instruction sequence
  • Increment the program counter by 4
  • Transfer the program sequence to a memory address

    • Which phase of the two-phase procedure involves fetching and executing instructions one at a time in order of increasing addresses?

    <p>Instruction execute</p> Signup and view all the answers

    What are the three parts of an instruction?

    <p>Operation code, address field, mode field</p> Signup and view all the answers

    Which type of instructions involve operations on data such as arithmetic, logical, or shift operations?

    <p>Data manipulation instructions</p> Signup and view all the answers

    Which operations involving memory are considered basic data transfer instructions?

    <p>Load and Store</p> Signup and view all the answers

    Which type of instructions help in changing the flow of a program by executing looping or branching operations?

    <p>Program sequencing and control instructions</p> Signup and view all the answers

    What happens to the flag bit N if the result of an operation is negative?

    <p>It is set to 1</p> Signup and view all the answers

    Which flag is set to 1 in case of an overflow during an operation?

    <p>V (overflow)</p> Signup and view all the answers

    What will happen if the jump instruction 'JC LOOP' is encountered?

    <p>Jump if carry to LOOP</p> Signup and view all the answers

    How does branching affect the CPU's program counter?

    <p>Sets it to the argument address of the jump instruction</p> Signup and view all the answers

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