It is necessary to transfer 256 words from a magnetic disk to a memory section starting from

Question:

It is necessary to transfer 256 words from a magnetic disk to a memory section starting from address 1230. The transfer is by means of DMA as shown in Fig. 11-18.

a. Give the initial values that the CPU must transfer to the DMA controller.

b. Give the step-by-step account of the actions taken during the input of the first two words.

Fig. 11-18

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Computer System Architecture

ISBN: 9780131755635

3rd Edition

Authors: M. Morris Mano

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Question Posted: Oct 24, 2023 04:10 AM

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It is necessary to transfer 256 words from a magnetic disk to a memory section starting from

Question:

Address select Interrupt BG BR RD RD DS RS BR BG Interrupt CPU WR Address Data WR Address Data: Direct memory access (DMA) controller RD Read control Write control Data bus Address bus Random-access memory (RAM) WR Address Data DMA acknowledge DMA request 1/0 Peripheral device

Step by Step Answer:

A Initial values that the CPU must transfer to the DMA controller Address register 1230 Word count register 256 Control register Mode Write to memory ...View the full answer

Computer System Architecture

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