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Chapter 6
System Resources
Timer and DMA Channel Maps
TIMER MAP:
DMA CHANNELS:
TIMER Channel-0 system timer interrupt
TIMER Channel-1 DRAM REFRESH request
TIMER Channel-2 SPEAKER tone generator
DMA Channel-0 Available
DMA Channel-1 Available
DMA Channel-2 FLOPPY DISK adapter
DMA Channel-3 Available
DMA Channel-4 Cascade for DMA
controller 1
DMA Channel-5 Available
DMA Channel-6 Available
DMA Channel-7 Available
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