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The block of 8237 that decodes the various commands given to the 8237 by the CPU is

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in Microprocessor by (39.4k points)
The block of 8237 that decodes the various commands given to the 8237 by the CPU is

(a) timing and control block

(b) program command control block

(c) priority block

(d) none of the mentioned

I have been asked this question during an online exam.

My doubt stems from Programmable DMA Interface 8237 -1 in division DMA, Floppy Disk and CRT Controllers of Microprocessor

1 Answer

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by (49.2k points)
Right option is (b) program command control block

For explanation I would say: The program control block decodes various commands given to the 8237 by the CPU before servicing a DMA request.

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