What happens in the daisy-chain priority interrupt shown in Fig. 11-12 when device 1 requests an interrupt

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What happens in the daisy-chain priority interrupt shown in Fig. 11-12 when device 1 requests an interrupt after device 2 has sent an interrupt request to the CPU but before the CPU responds with the interrupt acknowledge?

Fig. 11-12

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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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What happens in the daisy-chain priority interrupt shown in Fig. 11-12 when device 1 requests an interrupt

Question:

VAD 1 Device I PI PO PI Processor data bus VAD 2 Device 2 PO PI Interrupt request Device 3 VAD 3 Interrupt acknowledge PO To next device INT CPU INTACK

Step by Step Answer:

In a daisychain priority interrupt system devices are connected in a sequence and each device has its own priority level When a device requests an int...View the full answer

Computer System Architecture

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