Asus P5B SE - Motherboard - ATX - Interrupt Assignments

2-20 Chapter 2: Hardware information
2.5.3 Interrupt assignments
* These IRQs are usually available for PCI devices.
IRQ Priority Standard function
0 1 System timer
1 2 Keyboard controller
2 – Re-direct to IRQ#9
3 12 IRQ holder for PCI steering*
4 13 Communications port (COM1)*
5 14 IRQ holder for PCI steering*
6 15 Floppy disk controller
7 16
Printer Port (LPT1)*
8 3 System CMOS/Real Time Clock
9 4
ACPI*
10 5
SMBus Controller*
11 6 IRQ holder for PCI steering*
12 7 PS/2 compatible mouse port*
13 8 Numeric data processor
14 9 Primary IDE channel
15 10 Secondary IDE channel
IRQ assignments for this motherboard
A B C D E F G H
PCI1
– – – – – used – –
PCI2
– – – – – – shared –
PCI3
– – – – – – – shared
PCIEX16_1
shared – – – – – – –
PCIEX1_1
shared – – – – – – –
PCIEX1_2
– shared – – – – – –
PCIEX1_3
– – shared – – – – –
On-board ESATA, SATA_RAID
(JMB363)
– shared – – – – – –
On-board PRI_IDE
– shared – – – – – –
On-board HD Audio
– – – – – – shared –
On-board GbLAN
shared – – – – – – –
USB 2.0 EHCI#1
– – – – – – shared
USB12 OBCI#1
– – – – – – shared
USB34 OBCI#2
– – – shared – – – –
USB56 OBCI#3
– – shared – – – – –
USB 2.0 EHCI#1
– – shared – – – – –
USB78 OBCI#4
– shared – – – – – –
USB910 OBCI#5
shared – – – – – – –
SATA1, SATA2 (ICH8)
– – – shared – – – –
SATA3, SATA4 (ICH8)
– – – shared – – – –
Standard interrupt assignments