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The bus is available when the DMA controller receives the signal

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in Microprocessor by (39.4k points)
The bus is available when the DMA controller receives the signal

(a) HRQ

(b) HLDA

(c) DACK

(d) All of the mentioned

The question was asked in an internship interview.

Origin of the question is DMA Transfers and Operations topic in chapter DMA, Floppy Disk and CRT Controllers of Microprocessor

1 Answer

0 votes
by (49.2k points)
Right choice is (b) HLDA

Explanation: If the HLDA signal is received by the DMA controller, it indicates that the bus is available.

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