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C o m p a c t B o a r d
P C M - 5 8 9 3 / 5 8 9 3 L
Appendix B I/O Informaion
B - 3
B.3 IRQ Mapping Chart
IRQ0 System Timer
IRQ8 System CMOS / Real
time clock
IRQ1 Keyboard
IRQ9 Microsoft ACPI –
Compliant system
IRQ2 Cascade to IRQ Controller
IRQ10 COM3
IRQ3 COM2
IRQ11 COM4
IRQ4 COM1
IRQ12 PS/2 mouse
IRQ5 Unused
IRQ13 FPU
IRQ6 Floppy
IRQ14 Primary IDE
IRQ7 Printer
IRQ15 Reserved
B.4 DMA Channel Assignments
DMA Channel
Function
0 Available
1 Available
2 Floppy
3 Available