ADLINK AmITX-IB-I - Manual (Page 76)

64 System Resources
B.4 Interrupt Request (IRQ) Lines
Table B-4: IRQ Lines APIC Mode
IRQ# Typical Interrupt Resource Connected to Pin
0 System Timer N/A
1 Keyboard controller N/A
2 N/A N/A
3
Serial Port 2 (COM2) / PCI /
ISA
IRQ3 via SERIRQ, IRQ3 at
ISA bus
4
Serial Port 1 (COM1) / PCI /
ISA
IRQ4 via SERIRQ, IRQ4 at
ISA bus
5
Serial Port 3, 4 (COM3,4) / PCI
/ ISA
IRQ5 via SERIRQ, IRQ5 at
ISA bus
6 N/A N/A
7 N/A N/A
8 Real-time clock N/A
9 N/A N/A
10
Serial Port 5 (COM5,6) / PCI /
ISA
IRQ10 via SERIRQ, IRQ10 at
ISA bus
11 N/A N/A
12 N/A N/A
13 Math Processor N/A
14 N/A N/A
15 N/A N/A
16
PCI-to-PCI bridge, PCI-to-USB
Host Controller
N/A
17 PCI-to-PCI bridge N/A
18 N/A N/A
19 N/A N/A
20 N/A N/A
21 N/A N/A
22 High Definition Audio Contoller N/A
23 AHCI SATA Contoller N/A