APPENDIX
48
MI801 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
IRQ2
Interrupt Cascade
IRQ3
Serial Port #2
IRQ4
Serial Port #1
IRQ5
Reserved
IRQ6
Reserved
IRQ7
Reserved
IRQ8
Real Time Clock
IRQ9
Reserved
IRQ10
Serial Port #4
IRQ11
Serial Port #3
IRQ12
PS/2 Mouse
IRQ13
80287
IRQ14
Primary IDE
Summary of Contents for MI801
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Page 14: ...INSTALLATIONS 10 MI801 User s Manual JP8 Clear CMOS Setting JP8 Setting Normal Clear CMOS...
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