System interrupt specifications
Hardware IRQ System function
IRQ0 System timer
IRQ1 Standard 101-/102-Key or Microsoft® Natural Keyboard
IRQ8 System CMOS/real-time clock
IRQ9 Microsoft ACPI-compliant system
IRQ11 Intel (ICH9 Family) SMBus Controller
IRQ12 Alps PS/2 TouchPad pointing device (2-way) for 14-in LCD
IRQ13 Numeric data processor
IRQ16 Intel (ICH9 Family) USB Universal Host Controller—2937
Intel (ICH9 Family) PCI Express Port 1—2940
Intel (ICH9 Family) PCI Express Port 5—2948
Mobile Intel 4 Series Express Chipset PCI Express Port 2—2A41
nVIDIA GeForce G103 M
IRQ17 Intel (ICH9 Family) PCI Express Port 2—2942
Intel (ICH9 Family) PCI Express Port 6—294A
Intel (ICH9 Family) USB Universal Host Controller—2938
IRQ18 Intel (ICH9 Family) USB Universal Host Controller—2936
Intel (ICH9 Family) USB2 Enhanced Host Controller—293C
IRQ19 Intel (ICH9 Family) PCI Express Port 4—2946
Intel (ICH9 Family) USB Universal Host Controller—2939
Realtek RTL8168C(P)/8111C(P) Family PCI-E Gigabit Ethernet NIC (NIDS 6.0)
IRQ20 Intel (ICH9 Family) USB2 Enhanced Host Controller—293A
IRQ21 Intel (ICH9MM/M-E Family) 4-port SATA AHCI Controller—2929
IRQ22 Intel (ICH9 Family) USB Universal Host Controller—2935
High-definition audio controller
System interrupt specifications 95
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