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Troubleshooting
Interrupt Request Lines (IRQ)
Peripheral devices can use interrupt request lines to notify CPU for the service
required. The following table shows the IRQ used by the devices on board.
IRQ#
IRQ 0
IRQ 1
IRQ 2
IRQ 3
IRQ 4
IRQ 5
IRQ 6
IRQ 7
IRQ 8
IRQ 9
IRQ 10
IRQ 11
IRQ 12
IRQ 13
IRQ 14
IRQ 15
Current Use
System ROM
System ROM
【Unassigned】
System ROM
System ROM
【Unassigned】
System ROM
【Unassigned】
System ROM
【Unassigned】
【Unassigned】
Video ROM
System ROM
System ROM
System ROM
【Unassigned】
ROBO-8710VLA User’s Manual
Default Use
System Timer
Keyboard Event
Usable IRQ
COM2
COM1
Usable IRQ
Diskette Event
Usable IRQ
Real-Time Clock
Usable IRQ
Usable IRQ
Usable IRQ
IBM Mouse Event
Coprocessor Error
Hard Disk Event
Usable IRQ
5-5