Asus P5LD-MR User Manual Page 37

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ASUS P5LD-MR 2-17
2.5.3 Interrupt assignments
IRQ Priority Standard Function
0 1 System Timer
1 2 Keyboard Controller
2 Re-direct to IRQ#9
3 11 Communications Port (COM2)*
4 12 Communications Port (COM1)*
5 13 IRQ holder for PCI steering*
6 14 Floppy Disk Controller
7 15 Printer Port (LPT1)*
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 PS/2 Compatible Mouse Port*
13 8 Numeric Data Processor
14 9 Primary IDE Channel
15 10 Secondary IDE Channel
* These IRQs are usually available for ISA or PCI devices.
Standard interrupt assignments
PCI Bus Number, IDSEL, and IRQ assignments
Description INTA INTB INTC INTD REQ # GNT#
IDE Controller PIRQC#
SATA Host Controller PIRQD#
SMBus Controller PIRQD#
USB UHCI Host controller #1 PIRQE#
USB UHCI Host controller #2 PIRQF#
USB UHCI Host controller #3 PIRQC#
USB UHCI Host controller #4 PIRQD#
USB EHCI Host controller PIRQE#
BCM5753A #1 PIRQA#
BCM5753A #2 PIRQB#
PCI slot 1 PIRQG# PIRQF# PIRQE# PIRQH# REG0# GNT0#
PCI slot 2 PIRQF# PIRQE# PIRQH# PIRQG# REG1# GNT1#
PCI E x 8 slot PIRQA# PIRQB# PIRQC# PIRQD#
PCI E x 16 slot PIRQA# PIRQB# PIRQC# PIRQD#
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