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IRQ Mapping Chart
IRQ0 System Timer
IRQ8 RTC Clock
IRQ1 Keyboard
IRQ9 Unused
IRQ2 Cascade to IRQ Controller IRQ10 Unused
IRQ3 COM2/COM4
IRQ11 Unused
IRQ4 COM1/COM3
IRQ12 PS/2 mouse
IRQ5 Unused
IRQ13 FPU
IRQ6 FDC
IRQ14 Primary IDE
IRQ7 Printer
IRQ15 Unused
DMA Channel Assignments
DMA Channel
Function
0 Available
1 Available
2 Floppy
Disk
3 Available
4
Cascade for DMA controller 1
5 Available
6 Available
7 Available