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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 PCIE2 and PCIE4 provide two x16 Gen3 link to CPU2; the onboard PCIE6
provide one x16 Gen3 link to CPU1. These slots support VGA cards and various server class
high performance add-on cards.
2.5.5
PCI Express x8 slot (x8 link)
The onboard PCIE3 provides one x8 Gen3 link to CPU1.
2.5.6
PCI Express x8 slot (x4 link)
The onboard PCIE1 provides one x4 Gen3 link to CPU1.
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
- Quick Links:
- Memory Configurations
- Jumpers
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