Appendix A
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KEM
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User’s Manua
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Appendix A

System Resources
Interrupt Request (IRQ) Lines
IRQ # Used For Comment
0 Timer0
1 keyboard controller
2 Cascade
3 COM2 Note (1)
4 COM1 Note (1)
5 Free
6 Floppy disk controller Note (1)
7 Free
8 Real Time Clock
9 ACPI-Compliant System
10 Free
11 COM3&4 Note (1)
12 PS/2 Mouse Note (1)
13 Floating point unit (FPU /
NPU / Math coprocessor)
14 Primary IDE channel Note (1)
15 Secondary IDE channel Note (1)
Note: If the ��Used For” device is disabled in setup, the corresponding interrupt
is available for other devices.