IBASE Technology IB898, User Manual

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APPENDIX
44 IB898 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 System timer
IRQ 3 Nuvoton Communications Port (COM2)
IRQ 4 Nuvoton Communications Port (COM1)
IRQ 8 High precision event timer
IRQ 11 Intel(R) Pentium(R) processor N- and J-series /
Intel(R) Celeron(R) processor N- and J-series
Platform Control Unit - SMBus Port - 0F12
IRQ 16 Intel(R) Pentium(R) processor N- and J-series /
Intel(R) Celeron(R) processor N- and J-series PCI
Express - Root Port 1 - 0F48
IRQ 17 Intel(R) Pentium(R) processor N- and J-series /
Intel(R) Celeron(R) processor N- and J-series PCI
Express - Root Port 2 - 0F4A
IRQ 18 Intel(R) Pentium(R) processor N- and J-series /
Intel(R) Celeron(R) processor N- and J-series PCI
Express - Root Port 3 - 0F4C
IRQ 19 Intel(R) Pentium(R) processor N- and J-series /
Intel(R) Celeron(R) processor N- and J-series PCI
Express - Root Port 4 - 0F4E
IRQ 19 Intel(R) Pentium(R) processor N- and J-series /
Intel(R) Celeron(R) processor N- and J-series AHCI
- 0F23
IRQ 22 High Definition Audio Controller