2 - 1 3
2 - 1 3
2 - 1 3
2 - 1 3
2 - 1 3
A S U S T S 1 0 0 - E 3
A S U S T S 1 0 0 - E 3
A S U S T S 1 0 0 - E 3
A S U S T S 1 0 0 - E 3
A S U S T S 1 0 0 - E 3
2.5.3
2.5.3
2.5.3
2.5.3
2.5.3
Interrupt assignments
Interrupt assignments
Interrupt assignments
Interrupt assignments
Interrupt assignments
S t a n d a r d i n t e r r u p t a s s i g n m e n t s
S t a n d a r d i n t e r r u p t a s s i g n m e n t s
S t a n d a r d i n t e r r u p t a s s i g n m e n t s
S t a n d a r d i n t e r r u p t a s s i g n m e n t s
S t a n d a r d i n t e r r u p t a s s i g n m e n t s
* These IRQs are usually available forISA or PCI devices.
PCI Bus Number, IDSEL, and IRQ assignments
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#
PCIE x 16 slot
PIRQA# PIRQB# PIRQC# PIRQD#
PCIE 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#
ATI RAGE XL
PIRQE#
REQ2# GNT2#
SMBUS Controller
PIRQD#
Onboard LAN
PIRQB#
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 Compatiable Mouse Port
13
8
Numeric Data Processor
14
9
Primary IDE Channel
15
10
Secondary IDE Channel
When using PCI cards on shared slots, ensure that the drivers support
“Shared IRQ” or that the cards do not need IRQ assignments. Otherwise,
conflicts will arise between the two PCI groups, making the system
unstableand the card inoperable.
