41
•
IRQ Mapping Chart
IRQ0 System Timer
IRQ8 RTC CMOS clock
IRQ1 Keyboard
IRQ9 ACPI STEERING
IRQ2 IRQ Controller
IRQ10 COM4
IRQ3 COM2
IRQ11 COM3
IRQ4 COM1
IRQ12 PS/2 mouse
IRQ5 USB
IRQ13 FPU
IRQ6 FDC
IRQ14 Primary IDE
IRQ7 Printer
IRQ15 Secondary IDE
•
DMA Channel Assignment
Channel
Function
0
Available
1
Available
2
Floppy disk
3
Available
4
Cascade for DMA controller 1
5
Available
6
Available
7
Available