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7DEOH '0$ &KDQQHO $VVLJQPHQWV
'5(4 /LQH
8VHG %\$YDLODEOH
DREQ0
Default audio DMA channel assignment
DREQ1
Default audio DMA channel assignment
DREQ2
Generated by I/O controller to enable DMA cycle for attached
diskette drive
DREQ3
Generated by I/O controller to enable DMA cycle for the
parallel port when in EPP mode
DREQ4
Reserved — selects second DMA controller
DREQ5
Available for use by an expansion card
DREQ6
Available for use by an expansion card
DREQ7
Available for use by an expansion card
System Overview
1-17
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