Appendix C
IRQ and I/O Port Address
The factory-set interrupt requests and I/O port addresses are listed below. Find an appropriate one to
install an optional device.
Interrupt Request
The factory-set IRQs are assigned as follows:
IRQ
Peripheral Device (Controller)
IRQ
Peripheral Device (Controller)
0
System timer
9
ACPI
1
–
10
PCI
2
–
11
BMC
3
Serial port COM2
12
–
4
Serial port COM1
13
Numeric coprocessor
5
PCI
14
Primary IDE
6
–
15
Secondary IDE
7
–
16
PCI
8
Real-time clock
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