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The pin that is used to write data to the addressed memory location, during DMA write operation is

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in Microprocessor by (39.4k points)
The pin that is used to write data to the addressed memory location, during DMA write operation is

(a) MEMR (active low)

(b) AEN

(c) MEMW (active low)

(d) IOW (active low)

The question was posed to me in semester exam.

Enquiry is from DMA Controller 8257 in chapter DMA, Floppy Disk and CRT Controllers of Microprocessor

1 Answer

0 votes
by (49.2k points)
The correct choice is (c) MEMW (active low)

Explanation: The MEMW (active low) is used to write data to the addressed memory location, during DMA write operation.

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