Asus M4A89GTD PRO, User Manual

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2-18 Chapter 2: Hardware information
Chapter 2
2.5.3 Interrupt assignments
Standard interrupt assignments
* These IRQs are usually available for PCI devices.
IRQ Priority Standard function
0 1 System Timer
1 2 Keyboard Controller
2 – Redirect to IRQ#9
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
IRQ assignments for this motherboard
A B C D E F G H
PCIE x16_1 – – – shared – – – –
PCIE x16_2 – – shared – – – – –
PCIE x4_1 shared – – – – – – –
PCIE x1_1 – shared – – – – – –
PCI_1 – – – – shared – – –
PCI_2 – – – – – shared – –
LAN shared – – – – – – –
Onboard 890GX Video
Controller
– – shared – – – – –
USB 3.0 Controller
(M4A89GTD PRO/USB3
model only)
– shared – – – – – –
Oncip SATA Controller – – – shared – – – –
Onboard JMB 36x SATA
Controller
– – shared – – – – –
1394 Controller – – – – – – shared –
HD Audio shared – – – – – – –