IBASE SE-92 - Manual (Page 60)

52 SE-92 User 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
IRQ3 Serial Port #2
IRQ4 Serial Port #1
IRQ5 SMBus Controller
IRQ8 Real Time Clock
IRQ19 SATA AHCI Controller