Standard interrupt assignments, Irq assignments for this motherboard, Asus pc-dl deluxe motherboard 2-15 – Asus AP1720-E1 User Manual
Page 41
ASUS PC-DL Deluxe motherboard
2-15
Standard Interrupt Assignments
IRQ
Priority
Standard Function
0
1
System Timer
1
2
Keyboard Controller
2
N/A
Programmable Interrupt
3*
11
Communications Port (COM2)
4*
12
Communications Port (COM1)
5*
13
Sound Card (sometimes LPT2)
6
14
Floppy Disk Controller
7*
15
Printer Port (LPT1)
8
3
System CMOS/Real Time Clock
9*
4
ACPI Mode when used
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.
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.
IRQ assignments for this motherboard
INTA#
INTB#
INTC#
INTD#
PCI slot 1
IRQ_F#
IRQ_G#
IRQ_H#
IRQ_F#
PCI slot 2
IRQ_G#
IRQ_H#
IRQ_E#
IRQ_F#
PCI slot 3
IRQ_G#
IRQ_E#
IRQ_F#
IRQ_F#
PCI slot 4
IRQ_E#
IRQ_F#
IRQ_G#
IRQ_F#
PCI slot 5
IRQ_F#
IRQ_G#
IRQ_H#
IRQ_F#
AGP Pro slot
IRQ_A#
IRQ_B#
—
—
Onboard USB controller #1
IRQ_A#
—
—
—
Onboard USB controller #2
IRQ_D#
—
—
—
Onboard USB controller #3
IRQ_C#
—
—
—
Onboard USB controller #4
IRQ_A#
—
—
—
Onboard USB 2.0 controller
IRQ_H#
—
—
—
Onboard LAN controller (Intel 82547EI)
IRQ_F#
—
—
—
Onboard RAID controller (Promise 20378R)
IRQ_H#
—
—
—
Onboard IDE controller
IRQ_C#
Onboard SATA controller (ICH5R)
IRQ_C#
—
—
—
Onboard 1394 controller (TSB43AB22A)
IRQ_E#
—
—
—
Onboard audio controller (AD1985)
IRQ_B#