Dell Precision 610 Service Manual page 27

The following table lists the direct memory access (DMA) channel assign-
ments for the Dell Precision 610 mini tower system.
7DEOH  '5(4 /LQH $VVLJQPHQWV
'5(4 /LQH 8VHG %\$YDLODEOH
DREQ0 Available
DREQ1 Available
DREQ2 Generated by super I/O controller to initiate DMA cycle for
attached diskette drive
DREQ3 Available
DREQ4 Generated by bus controller chip to activate second DMA
controller
DREQ5 Available
DREQ6 Available
DREQ7 Available
NOTE: The integrated audio controller is assigned one or two DMA channels automatically
during system start-up.
System Overview 1-17