What information is displayed by the command cat/proc/dma?
A.
whether DMA is enabled
B.
which DMA channels are in use
C.
which DMA mode is in use
D.
general information about DMA on the machine
Explanation:
/proc/dma
This file contains a list of the registered ISA direct memory access (DMA) channels in use. A
sample/proc/dma files looks like the following:
4: cascade
It shows whether DMA is enabled or not.