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2.5.3
Interrupt assignments
Standard Interrupt assignments
IRQ
Priority
0
1
1
2
2
-
3*
4*
12
5*
13
6
7*
15
8
3
9*
4
10*
5
11*
6
12*
7
13
8
14*
15*
* These IRQs are usually available for ISA or PCI devices.
2.5.4
PCI Express x16 slot (x16 Gen3 link)
The onboard PCIE6 slot provides one x16 Gen3 link. This slot supports VGA cards and
various server class high performance add-on cards.
2.5.5
PCI Express x8 slot (x4 Gen3 link)
The onboard PCIE3 slot provides one x4 Gen3 link. This slot supports various server class
high performance add-on cards.
2.5.6
PCI slot
The PCI4 and PCI5 slots support cards such as LAN, USB, and other cards that comply with
PCI specifications.
2-14
Standard function
System Timer
Keyboard Controller
Programmable Interrupt
Communications Port (COM1)
--
--
System CMOS/Real Time Clock
ACPI Mode when used
IRQ Holder for PCI Steering
IRQ Holder for PCI Steering
PS/2 Compatible Mouse Port
Numeric Data Processor
Chapter 2: Hardware Information
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