Dell OptiPlex E1 Service Manual page 20

1-12 Dell OptiPlex E1 Managed PC Service Manual
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 built-in audio controller (optional), NIC, and video controllers are assigned available
DMA channels automatically during system start-up.