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The pin that is used for data transfer control and operation termination signals is

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The pin that is used for data transfer control and operation termination signals is

(a) SINTR

(b) EXT

(c) DRQ and EXT

(d) RQ (active low) or GT (active low)

I have been asked this question in homework.

Asked question is from I/O Processor 8089 topic in portion Multimicroprocessor Systems of Microprocessor

1 Answer

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by (49.2k points)
Correct option is (c) DRQ and EXT

The explanation is: The DRQ and EXT are used for data transfer control and operation termination signals during DMA operations.

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