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2.5.3
Interrupt assignments
Standard Interrupt assignments
IRQ
Priority
0
1
1
2
2
-
3*
11
4*
12
5*
13
6
14
7*
15
8
3
9*
4
10*
5
11*
6
12*
7
13
8
14*
9
15*
10
* 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 and auto switches to x8 link if PCIE5 is
occupied. This slot supports VGA cards and various server class high performance add-on
cards.
2.5.5
PCI Express x8 slot (x8 Gen3 link)
The onboard PCIE5 slot provides one x8 Gen3 link. This slot supports VGA cards and various
server class high performance add-on cards.
2.5.6
PCI slot
The PCI 1 slot supports cards such as LAN, USB, and other cards that comply with PCI
specifications.
2-18
Standard function
System Timer
Keyboard Controller
Programmable Interrupt
Communications Port (COM2)
Communications Port (COM1)
--
Floppy Disk Controller
--
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
Primary IDE Channel
Secondary IDE Channel
Chapter 2: Hardware Information
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