The register of 8257 that can only be written in is
A. DMA address register
B. terminal count register
C. mode set register
D. status register
Answer:A
The register of 8257 that can only be written in is
A. DMA address register B. terminal count register C. mode set register D. status register
Explanation: The selected register may be read or written depending on the instruction executed by the CPU. But only write operation can be performed on the mode set register.