User's Guide

Appendix C
IRQ
The factory-set interrupt requests 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 12 SM Bus
1
−
13 Numeric data processor
2
−
14
−
3 COM 2 serial port 15
−
4 COM 1 serial port 16 VGA, LAN1
5 PCI 17 LAN2, SATA
6
−
18
−
7 PCI 19
−
8 Real-time clock 20 USB
9 ACPI Compliant System 21 USB
10 PCI 22 USB
11 Motherboard resource 23 USB