APPENDIX
MI808 User’s Manual
61
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
IRQ1
Standard PS/2 Keyboard
IRQ3
Communications Port (COM2)
IRQ4
Communications Port (COM1)
IRQ6
Communications Port (COM3)
IRQ10
Communications Port (COM4)
IRQ11
PS/2 Compatible Mouse
IRQ12
Intel(R) Celeron(R)/Pentium(R) SM
Bus Controller
IRQ19 Standard
SATA AHCI Controller
Summary of Contents for MI808
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