SOM-4466 User Manual
60
B.3
Interrupt Assignments
Table B.3: Interrupt Assignments
Interrupt#
Interrupt Source
IRQ 0
System timer
IRQ 1
Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
IRQ 3
Communications Port (COM2)
IRQ 4
Communications Port (COM1)
IRQ 8
System CMOS/real time clock
IRQ 9
Microsoft ACPI-Compliant System
IRQ 12
PS/2 Compatible Mouse
IRQ 13
Numeric data processor
IRQ 14
Primary IDE Channel
IRQ 15
Secondary IDE Channel
IRQ 16
Microsoft UAA Bus Driver for High Definition Audio
IRQ 16
PCI standard PCI-to-PCI bridge
IRQ 16
Realtek PCIe FE Family Controller
IRQ 17
Standard Dual Channel PCI IDE Controller
IRQ 17
Standard Enhanced PCI to USB Host Controller
IRQ 17
Standard Enhanced PCI to USB Host Controller
IRQ 18
AMD Radeon HD 6250 Graphics
IRQ 18
Standard OpenHCD USB Host Controller
IRQ 18
Standard OpenHCD USB Host Controller
IRQ 19
Microsoft UAA Bus Driver for High Definition Audio
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