INTRODUCTION TO MICROPEOCESSOR
MICROCOMPUTER SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It is a type of an internal register used to hold the 16-bit memory address used for the DMA transfer
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Base Address
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Base Word
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Current Address
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Current Word Count
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Explanation:
Detailed explanation-1: -Direct memory access (DMA) is the process of transferring data without the involvement of the processor itself. It is often used for transferring data to/from input/output devices. A separate DMA controller is required to handle the transfer. The controller notifies the DSP processor that it is ready for a transfer.
Detailed explanation-2: -Each of four channels of 8257 has a pair of two 16-bit registers, viz. DMA address register and terminal count register. There are two common registers for all the channels, namely, mode set register and status register . Thus there are a total of ten registers.
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