SOM-5786 User Manual
42
C.3
Interrupt Assignments
Table C.3: Interrupt assignments
Interrupt#
Interrupt source
NMI
Parity error detected
IRQ 0
System timer
IRQ 1
Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
IRQ 2
Available
IRQ 3
Communications Port (COM2)
IRQ 4
Communications Port (COM1)
IRQ 5
Available
IRQ 6
Standard floppy disk controller
IRQ 7
Available
IRQ 8
System CMOS/real time clock
IRQ 9
Microsoft ACPI-Compliant System
IRQ 10
Available
IRQ 11
Available
IRQ 12
PS/2 Compatible Mouse
IRQ 13
Numeric data processor
IRQ 14
Primary IDE Channel
IRQ 15
ntel(R) ICH8 Family SMBus Controller - 283E
IRQ 16
Mobile Intel(R) 965 Express Chipset Family
Intel(R) ICH8 Family USB Universal Host Controller - 2834
IRQ 18
Intel(R) ICH8 Family USB2 Enhanced Host Controller - 283A
Intel(R) ICH8 Family USB Universal Host Controller - 2832
IRQ 19
Intel(R) ICH8 Family USB Universal Host Controller ®C 2831
Intel(R) ICH8M 3 port Serial ATA Storage Controller - 2828
IRQ 20
Intel(R) 82566MM Gigabit Network Connection
IRQ 21
Intel(R) ICH8 Family USB Universal Host Controller - 2835
IRQ 22
Microsoft UAA Bus Driver for High Definition Audio
IRQ 23
Intel(R) ICH8 Family USB Universal Host Controller ®C 2830
Intel(R) ICH8 Family USB2 Enhanced Host Controller - 2836
USB and Ethernet IRQ is automatically set by the system