The mode of 8237 in which the device transfers only one byte per request is
A. block transfer mode
B. single transfer mode
C. demand transfer mode
D. cascade mode
Answer:A
The mode of 8237 in which the device transfers only one byte per request is
A. block transfer mode B. single transfer mode C. demand transfer mode D. cascade mode
Explanation: In single mode, the device transfers only one byte per request. For each transfer, the DREQ must be active until the DACK is activated.