IBASE Technology MI989 Series, User Manual

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62 MI989
User’s Manual
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 0 High precision event timer
IRQ 0 System timer
IRQ 8 High precision event timer
IRQ 7 AMD GPIO Controller
IRQ 4294967289 Standard SATA AHCI Controller
IRQ 4294967265~72
AMD USB 3.10 eXtensible Host Controller -
1.10 (Microsoft)
IRQ 4294967239~42 AMD Radeon(TM) Graphics
IRQ 4294967281~88
AMD USB 3.10 eXtensible Host Controller -
1.10 (Microsoft)
IRQ 4 Communications Port (COM1)
IRQ 3 Communications Port (COM2)
IRQ 10 Communications Port (COM3)
IRQ 11 Communications Port (COM4)
IRQ 6 Communications Port (COM5)
IRQ 6 Communications Port (COM6)
IRQ 4294967255~64 Intel(R) I211 Gigabit Network Connection #2
IRQ 4294967254
Intel(R) I211 Gigabit Network Connection
IRQ 4294967253 Intel(R) I211 Gigabit Network Connection
IRQ 4294967252 Intel(R) I211 Gigabit Network Connection
IRQ 4294967251 Intel(R) I211 Gigabit Network Connection
IRQ 4294967250 Intel(R) I211 Gigabit Network Connection
IRQ 4294967249 Intel(R) I211 Gigabit Network Connection
IRQ 4294967248 Intel(R) I211 Gigabit Network Connection
IRQ 4294967247 Intel(R) I211 Gigabit Network Connection
IRQ 4294967246 Intel(R) I211 Gigabit Network Connection
IRQ 4294967245 Intel(R) I211 Gigabit Network Connection
IRQ 4294967273~80
ASMedia USB 3.1 eXtensible Host
Controller - 1.10 (Microsoft)
IRQ 4294967244 AMD PSP 10.0 Device
IRQ 4294967243 AMD PSP 10.0 Device
IRQ 39 AMD Audio CoProcessor
IRQ 39 High Definition Audio Controller