Asus P5MT-MX/C - Manual (Page 37)

ASUS P5MT-MX/C 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.
Description INTA INTB INTC INTD REQ# GNT#
PCI slot 1 PIRQE# PIRQF# PIRQG# PIRQH# REQ0# GNT0#
PCI slot 2 PIRQG# PIRQH# PIRQE# PIRQF# REQ1# GNT1#
PCI E x16 slot PIRQA# PIRQB# PIRQC# PIRQD#
PCI E x 8 slot PIRQA# PIRQB# PIRQC# PIRQD#
Onboard USB controller 0 PIRQA#
Onboard USB controller 1 PIRQB#
Onboard USB controller 2 PIRQC#
Onboard USB controller 3 PIRQD#
USB 2.0 EHCI controller PIRQA#
Onboard IDE port PIRQC#
Onboard SATA port PIRQD#
Onboard Graphics Controller PIRQE# REQ2# GNT2#
SMBus Controller PIRQD#
Onboard LAN PIRQB#
When using PCI cards on shared slots, ensure that the drivers support
“Share IRQ” or that the cards do not need IRQ assignments; otherwise,
conflicts will arise between the two PCI groups, making the system
unstable and the card inoperable.
Standard interrupt assignments
PCI Bus Number, IDSEL, and IRQ assignments