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Appendix
EC41812CLDNA
31
IRQ Assignment Table
The table below shows parts of the interrupt assignment, but it does not show the
interrupts of the PCI devices.
Level
Function
IRQ0
System timer
IRQ1
Standard 101/102key or Microsoft Natural PS/2 Keyboard
IRQ3
COM3 COM4
IRQ4
COM1 COM2
IRQ5
Intel (R) 82801G (ICH7 Family) SMBus Controller 27DA
IRQ8
System CMOS/real time clock
IRQ9
Microsoft ACPICompliant System
IRQ1
COM5 COM6 COM7 COM8
IRQ1
Microsoft PS/2 Mouse
IRQ1
Numeric data processor
IRQ1
Primary IDE Channel
IRQ1
Secondary IDE Channel
IRQ1
Intel (R)82801G (ICH7 Family) PCI Express Root Port 27D0
IRQ1
Intel (R)82801G(ICH7 Family) USB Universal Host Controller27CB
IRQ1
Microsoft UAA Bus Driver for High Definition Audio
IRQ1
Mobile Intel (R) 945 Express Chipset Family
IRQ1
Realtek RTL8168C(P)/8111C(P) PCIE Gigabit Ethernet NIC #2
IRQ1
Intel (R)82801G(ICH7 Family) USB Universal Host Controller27CA
IRQ1
Intel (R)82801G(ICH7 Family) USB Universal Host Controller27C9
IRQ2
Intel (R)82801G(ICH7 Family) USB Universal Host Controller27C8
IRQ2
Intel (R)82801G(ICH7 Family) USB2 Enhanced Host Controller27CC
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