IBT Technologies MI979 Series, User Manual

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Appendix
MI979 Series
User’s Manual
73
B. Interrupt Request Lines (IRQ)
Peripheral devices use interrupt request lines to notify CPU for the service
required. The following table shows the IRQ used by the devices on board.
Level Function
IRQ 31 High Definition Audio Controller
IRQ 19 AMD SATA Controller
IRQ 81 ~ IRQ 190 Microsoft ACPI-Compliant System
IRQ 4294967292 AMD Radeon R7 Graphics
IRQ 4294967279 AMD PSP 2.0 Device
IRQ 4294967278 AMD PSP 2.0 Device
IRQ 18 Standard Enhanced PCI to USB Host Controller
IRQ 0 System timer
IRQ 0 High precision event timer
IRQ 8 High precision event timer
IRQ 46 High Definition Audio Controller
IRQ 1 Standard PS/2 Keyboard
IRQ 4 Communications Port (COM1)
IRQ 3 Communications Port (COM2)
IRQ 5 Communications Port (COM3)
IRQ 5 Communications Port (COM4)
IRQ 6 Communications Port (COM5)
IRQ 6 Communications Port (COM6)
IRQ 4294967270 ~
IRQ 4294967277 AMD USB 3.0 Host Controller
IRQ 4294967294 PCI Express standard Root Port
IRQ 4294967286 ~
IRQ 4294967291 Intel(R) I211 Gigabit Network Connection
IRQ 4294967293 PCI Express standard Root Port
IRQ 4294967280 ~
IRQ 4294967285 Intel(R) I211 Gigabit Network Connection #2
IRQ 12 Microsoft PS/2 Mouse