AXIOMTEK SHB101 Series, User Manual, Page: 31 / 85

SHB101
LGA775 SBC User’s Manual
Hardware Description 25
4.5 Interrupt Controller (IRQ) Map
The SHB101 Series is a 100% PC compatible control board. It consists of 16 interrupt request
lines, and four out of them can be programmable. The mapping list of the 16 interrupt request
lines is shown as the following table.
IRQ Parity check error
IRQ0 System Timer Output
IRQ1 Keyboard
IRQ2 Interrupt rerouting from IRQ8 through IRQ15
IRQ3 Serial port #2
IRQ4 Serial port #1
IRQ5 PCI Device Share
IRQ6 Floppy Disk Controller
IRQ7 Parallel port
IRQ8 Real time clock
IRQ9 ACPI Controller
IRQ10 PCI Device Share
IRQ11 PCI Device Share
IRQ12 PS/2 Mouse
IRQ13 Math coprocessor
IRQ14 SATA Primary (Legacy Mode)
IRQ15 SATA Secondary (Legacy Mode)