In 8257 (DMA), each of the four channels has
A. a pair of two 8-bit registers
B. a pair of two 16-bit registers
C. one 16-bit register
D. one 8-bit register
Answer:A
In 8257 (DMA), each of the four channels has
A. a pair of two 8-bit registers B. a pair of two 16-bit registers C. one 16-bit register D. one 8-bit register
Explanation: The DMA supports four channels, and each of the channel has a pair of two 16-bit registers, namely DMA address register and terminal count register.