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IRQ assignments for this motherboard
A B C D E F G H
PCIEx16_1 shared – – – – – – –
PCIEx16_2 shared – – – – – – –
PCIEx16_3 shared – – – – – – –
PCIEx16_4 shared – – – – – – –
PCIEx16_5 shared – – – – – – –
PCIEx16_6 shared – – – – – – –
Marvell9128 shared – – – – – – –
VIA1394 – shared – – – – – –
Asmedia USB3.0-1 shared – – – – – – –
Asmedia USB3.0-2 – shared – – – – – –
LAN1 (82579V) – – shared
–
– – – –
LAN2 (82574L)
–
–
– shared
– – – –
SATA Controller 1 – – shared – – – – –
SATA Controller 2 – – – – shared – – –
USB 2.0 Controller 1 – – – – – – – shared
USB 2.0 Controller 2 – – – – – – – shared
HD Audio – – – – – – shared –
IRQ Priority Standard function
0 1 System Timer
1 2 Keyboard Controller
2 - Programmable Interrupt
4 12 Communications Port (COM1)
5 13 IRQ Holder for PCI Steering
6 14 Reserved
7 15 Reserved
8 3 System CMOS/Real Time Clock
9 4 IRQ Holder for PCI Steering
10 5 IRQ Holder for PCI Steering
11 6 IRQ Holder for PCI Steering
12 7 Reserved
13 8 Numeric Data Processor
14 9 Primary IDE Channel
Standard Interrupt assignments
2-8 Chapter 2: Hardware information