Intel Processor Modes

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Questions and Answers

Which of the following modes allows multiple 8088 programs to run in protected mode?

  • Virtual 86 mode (correct)
  • 32/32 mode
  • Protected mode
  • Real mode

What is the purpose of a DMA controller circuit?

  • All of the above
  • To generate necessary address and control signals (correct)
  • To keep track of the bytes transferred
  • To transfer data on every clock cycle

What is the main processor's state during a DMA transfer?

  • Active
  • None of the above
  • Inactive
  • High impedance (correct)

What is the disadvantage of not using a DMA controller for data transfer?

<p>Both A and B (A)</p> Signup and view all the answers

Is the DMA controller treated as an I/O device during data transfer?

<p>Yes (D)</p> Signup and view all the answers

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