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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 PCIE6 provide one x16 Gen3 link to CPU1. This slot support VGA cards and
various server class high performance add-on cards.
2.5.5
PCI Express x8 slot (x8 link)
The onboard PCIE1 and PCIE2 provides two x8 Gen3 link to CPU1.
2-16
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
Standard function
Chapter 2: Hardware information
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