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9.3
PCI Interrupt Routing
Table 37
PCI Interrupt Routing Map
PIRQ
PCIe BUS INT Line
APIC Mode IRQ IGD
SDVO HDA
PCIe Bridge 0
PCIe Bridge 1 PCIe Bridge 2
PCIe Bridge 3
PCIe Root
Port 0
PCIe Root
Port 1
PCIe Root
Port 2
PCIe Root
Port 3
A
INTA
16
x
x
x
x
2
x
3
x
4
x
5
x
x
x
x
B
INTB
17
x
3
x
4
x
5
x
2
C
INTC
18
x
4
x
5
x
2
x
3
D
INTD
19
x
5
x
2
x
3
x
4
E
20
F
21
G
22
H
23
Note
2
Interrupt used by single function PCI Express devices (INTA).
3
Interrupt used by multifunction PCI Express devices (INTB).
4
Interrupt used by multifunction PCI Express devices (INTC).
5
Interrupt used by multifunction PCI Express devices (INTD).
