IBASE IB704 - Manual (Page 47)

APPENDIX
IB704 User’s Manual 43
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 PIC2 (IRQ8-15)
IRQ3 Serial Port #2
IRQ4 Serial Port #1
IRQ5 For PCI
IRQ6 Floppy Disk Controller
IRQ7 Parallel Port #1
IRQ8 Real Time Clock
IRQ9 For PCI
IRQ10 For PCI
IRQ11 For PCI
IRQ12 PS/2 Mouse
IRQ13 Coprocessor
IRQ14 Primary IDE