System Overview 1-17
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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
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