Appendix C Irq - NEC Express5800/R120b-1 User Manual

Appendix C
IRQ
The factory-set interrupt requests are listed below. Find an appropriate one to install an optional
device.
Interrupt Request
The factory-set IRQs are assigned as follows:
IRQ
0 System timer
1
2
3 COM 2 serial port
4 COM 1 serial port
5 PCI
6
7 PCI
8 Real-time clock
9 ACPI Compliant System
10 PCI
11 Motherboard resource
Peripheral Device
(Controller)
−
−
−
IRQ Peripheral Device (Controller)
12 SM Bus
13 Numeric data processor
14
15
16 VGA, LAN1
17 LAN2, SATA
18
19
20 USB
21 USB
22 USB
23 USB
−
−
−
−