2. Interrupt Lines
Express5800/R120d-2M User’s Guide
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Chapter 4 Appendix
2.
Interrupt Lines
Interrupt lines are assigned as factory settings as shown below. Use this table as a reference when you add
optional devices.
•
Interrupt lines
As factory settings, interrupt lines are assigned as follows.
IRQ
Peripheral Device (Controller)
IRQ
Peripheral Device (Controller)
0
System timer
12
SM Bus
1
−
13
Numeric data processor
2
−
14
−
3
COM 2 serial port
15
−
4
COM 1 serial port
16
VGA, LAN1
5
PCI
17
LAN2, SATA
6
−
18
−
7
PCI
19
−
8
Real-time clock
20
USB
9
Microsoft ACPI Compliant System
21
USB
10
PCI
22
USB
11
Motherboard resource
23
USB