During direct memory access (DMA), the INTR and INTA (interrupt and interrupt acknowledge) lines:
A. are never used
B. 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
This Question Belongs to Electronics And Communications Engineering >> Microprocessors And Microcontrollers
Related Questions on Microprocessors and Microcontrollers
A. Circuit A has more gates than circuit B
B. Circuit B has more gates than circuit A
C. Circuit A has the same number of gates as circuit B
D. None of the above
For the number A[15:0] = 0110110010001111, A[14:13] is ______ A[3:2].
A. Less than
B. Greater than
C. The same as
D. Cannot be determined
Join The Discussion