Q163
During direct memory access (DMA), the INTR and INTA (interrupt and interrupt acknowledge) lines:
A.
are never used
AnswerB.
are used by the DMA controller to acquire the data and address bus from the microprocessor
C.
are used by the I/O device to invoke an error routine if a problem occurs during DMA transfer
D.
are used by the DMA controller to signal the microprocessor about the end of the current data transfer
Answer: Option A
Solution
Answer: Option A
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