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IRDY# signal is used for _______

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IRDY# signal is used for _______

(a) Selecting the interrupt line

(b) Sending an interrupt

(c) Saying that the initiator is ready

(d) None of the mentioned

The question was asked during an interview for a job.

This interesting question is from PCI BUS-2 topic in chapter Input/Output Organisation of Computer Architecture

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Correct option is (c) Saying that the initiator is ready

For explanation I would say: The initiator transmits this signal to tell the target that it is ready.

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