IBASE MB961 - Manual (Page 74)

APPENDIX
70 MB961 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
IRQ0 System Timer Output
IRQ1 Keyboard
IRQ3 Serial Port #2
IRQ4 Serial Port #1
IRQ5 Serial Port #3 & Serial Port #4 & Parallel Port #1
IRQ6 Reserved
IRQ7 Reserved
IRQ8 Real Time Clock
IRQ9 Microsoft ACPI-Compliant System
IRQ10 Intel(R)6 Series /C200 Series Chipset Family SMBus
Controller-1C22
IRQ12 PS/2 Mouse