GLOBAL AMICI Computer Hardware 2807700 User Manual
APPENDIX
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.
service required. The following table shows the IRQ used by the devices
on board.
Level Function
IRQ0
IRQ0
System
Timer
Output
IRQ1 Keyboard
IRQ2 Interrupt Cascade
IRQ3
IRQ2 Interrupt Cascade
IRQ3
Serial
Port
#2
IRQ4
Serial
Port
#1
IRQ5 Reserved
IRQ6
IRQ6
Floppy
Disk
Controller
IRQ7
Parallel
Port
#1
IRQ8
Real
Time
Clock
IRQ9 Reserved
IRQ10 Reserved
IRQ11 Reserved
IRQ12 PS/2 Mouse
IRQ13 80287
IRQ14 Primary IDE
IRQ15 Secondary IDE
IRQ10 Reserved
IRQ11 Reserved
IRQ12 PS/2 Mouse
IRQ13 80287
IRQ14 Primary IDE
IRQ15 Secondary IDE
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2807700 User’s Manual