Question

The register that keeps track of all the DMA channel pending requests and status of their terminal counts is

(a) mask register

(b) request register

(c) status register

(d) count register

I got this question by my school principal while I was bunking the class.

The doubt is from Programmable DMA Interface 8237 -2 in division DMA, Floppy Disk and CRT Controllers of Microprocessor

Answer 1

Correct choice is (c) status register

To explain I would say: The status register keeps track of all the DMA channel pending requests, and status of their terminal counts. These are cleared upon reset.