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System interrupt specifications
Hardware IRQ System function
IRQ0 System timer
IRQ1 Standard 101-/102-key or Microsoft® Natural PS/2 Keyboard
IRQ8 System CMOS/real-time clock
IRQ9 * Microsoft ACPI-compliant system
IRQ12 Synaptics PS/2 TouchPad
IRQ13 Numeric data processor
IRQ14 Primary IDE channel
IRQ15 Intel® 82801G (ICH7 Family) SMBus Controller—27DA
IRQ16 Broadcom 802.11b/g WLAN no. 2
Intel 82801G (ICH7 Family) PCI Express Root Port—27D0
Intel 82801G (ICH7 Family) USB Universal Host Controller—27CB
Microsoft UAA Bus Driver for High Definition Audio
Mobile Intel 945 Express Chipset Family
IRQ17 Intel 82801G (ICH7 Family) PCI Express Root Port—27D2
IRQ18 Intel 82801G (ICH7 Family) USB Universal Host Controller—27CA
IRQ19 Intel 82801G (ICH7 Family) USB Universal Host Controller—27C9
IRQ23 Intel 82801G (ICH7 Family) USB Universal Host Controller—27C8
Intel 82801G (ICH7 Family) USB2 Enhanced Host Controller—27CC
* Default configuration
76 Chapter 6 Specifications