MPSTME, NMIMS University: Basic Instruction Cycle Registers Overview
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Questions and Answers

How many T states are required for fetching one byte from an IO port?

  • 4 T-States
  • 2 T-States
  • 1 T-State
  • 3 T-States (correct)

    • During which cycle does the ALE pin go high at the first T state?

  • Instruction Cycle
  • Memory Read Cycle
  • Opcode Fetch Cycle (correct)
  • Control and Status Signals Cycle

    • Which signals indicate that it is a memory-related operation during data fetching?

  • RD and WR
  • IO/M and RD (correct)
  • WR and S0
  • S1 and ALE

    • What is the function of AD0-AD7 during the Opcode Fetch Cycle?

    <p>Fetch OP-code and store the lower byte of Program Counter</p> Signup and view all the answers

    Which signals are set to S0=1 and S1=1 during the Opcode Fetch Cycle?

    <p>ALE and RD</p> Signup and view all the answers

    What is the state of WR signal during memory read cycles?

    <p>High level</p> Signup and view all the answers

    Which cycles require 4 T states from T1-T4?

    <p>Opcode Fetch Cycle</p> Signup and view all the answers

    What is the purpose of the address lines in a bus?

    <p>To specify memory locations for data transfer</p> Signup and view all the answers

    Which type of bus would be most suitable for transferring larger chunks of data simultaneously?

    <p>64-bit bus</p> Signup and view all the answers

    In a computer system, what does the expansion bus facilitate?

    <p>Connection of additional components and devices</p> Signup and view all the answers

    Which function do control lines in a bus serve?

    <p>Requesting and acknowledging signals</p> Signup and view all the answers

    What is the primary role of a bus in a computer system?

    <p>Transfer information between different parts of the system</p> Signup and view all the answers

    Which bus feature allows for synchronization of peripherals with the system clock?

    <p>Timing signals</p> Signup and view all the answers

    What is the main difference between serial and parallel data transfer in buses?

    <p>Serial transfer transmits data bit by bit, while parallel transfer transmits multiple bits simultaneously</p> Signup and view all the answers

    In a computer system, what is the purpose of data lines in a bus?

    <p>To carry information between source and destination</p> Signup and view all the answers

    Which feature distinguishes buses of different bit sizes from each other?

    <p>Data lines</p> Signup and view all the answers

    What function do control lines serve in a bus?

    <p>Request and acknowledge signals</p> Signup and view all the answers

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