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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 link)
The onboard PCIE4 and PCIE6 slots provides one x16 Gen3 link to CPU1 and auto switches
to x8 link if PCIE3/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 link)
The onboard PCIE3 and PCIE5 slots provide one x8 Gen3 link to CPU1. These slots support
VGA cards and various server class high performance add-on cards.
2.5.6
PCI Express x8 slot (x4 link)
The onboard PCIE1 slot provides one x4 Gen2 link to Intel C612 PCH chipset.This slot
support various server class high performance add-on cards.
2.5.7
PCI slot
The PCI slot supports cards that comply with PCI 2.3 specifications.
The onboard PCIE7 supports MIO only.
2-16
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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