Interrupt Request Lines (Irq) - IBASE Technology IB903F User 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
IRQ 0
IRQ 1
IRQ 3
IRQ 4
IRQ 6
IRQ 6
IRQ 8
IRQ 12
IRQ 13
IRQ 16
IRQ 16
IRQ 17
IRQ 17
IRQ 18
IRQ 18
IRQ 18
IRQ 18
IRQ 18
IRQ 19
IRQ 19
Function
System timer
Standard 101/102-Key
Communications Port (COM2)
Communications Port (COM1)
Communications Port (COM3)
Communications Port (COM4)
System CMOS/real time clock
PS/2 Compatible Mouse
Numeric data processor
High Definition Audio Controller
PCI standard PCI-to-PCI bridge
Standard Enhanced PCI to USB Host Controller
Standard Enhanced PCI to USB Host Controller
High Definition Audio Controller
Standard Open HCD USB Host Controller
Standard Open HCD USB Host Controller
Standard Open HCD USB Host Controller
Standard Open HCD USB Host Controller
PCI standard PCI-to-PCI bridge
AMD SATA Controller (IDE Mode)
IB903F User's Manual
APPENDIX
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