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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 (slot location 5) and 4 (slot location 3) slots provides one x16
Gen3 link to CPU1 and auto switches to x8 link if PCIE1/3 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 PCIE1 (slot location 6), 2 (slot location 5), 3 (slot location 4) and 4
(slot location 3) 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 PCIE5 (slot location 2) provide one x4 Gen2 link to Intel C602 PCH.
This slot support various server class high performance add-on cards.
ASUS Z9PA-D8
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
2-17
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