70
2 System Board
Assigned Device Interrupts
Assigned Device Interrupts
Input/Output Controller Hub Interrupts
Device
REQ/
GNT
ID
IDSEL
AD[xx]
Chip-set Interrupt Connection
INTA
INTB
INTC
INTD
CS4280 Audio Controller
0
5
21
—
A
—
—
USB Controller
1
—
—
—
—
—
—
A
AGP slot
—
0
16
A
B
—
—
PCI 32-bit slot #1
5
6
22
C
D
A
B
PCI 32-bit slot #2
4
8
24
A
B
C
D
PCI 32-bit slot #3
3
9
25
D
A
B
C
PCI 32-bit slot #4 (SCSI
controller on some models)
2
10
26
C
D
A
B
PCI 32-bit slot #5 (LAN card)
1
11
27
B
C
D
A
1.
The USB interrupt is connected within the ICH to intD.