IBASE ET860 - Manual (Page 42)

APPENDIX
36 ET860 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 1 Standard PS/2 Keyboard
IRQ 3 Communications Port (COM2)
IRQ 4 Communications Port (COM1)
IRQ 5 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 8 High precision event timer
IRQ 11 Communications Port (COM3)
IRQ 11 Communications Port (COM4)
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 SDA Standard Compliant SD Host Controller
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