Interrupts; Pci Interrupt Routing Map - Intel Motherboard Raptor AT Installation Manual

Intel motherboard installation guide
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Raptor AT – Installation Guide
Bus #
Device #
00
14
00
0E

Interrupts

IRQ
System Resource
NMI
I/O channel check
0
Reserved, interval timer
1
Reserved (keyboard)
2
Reserved (cascade)
3
COM2*
4
COM1*
5
User Available
6
Floppy Drive
7
LPT1*
8
Real time clock
9
User Available
10
User Available
11
User Available
12
PS/2 mouse port (if present, else user available)
13
Reserved (math coprocessor)
14
Primary IDE (if present, else user available)
15
Secondary IDE (if present, else user available)
*Default, but can be changed to another IRQ

PCI Interrupt Routing Map

PIIX4
IDSEL
Signal
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
Ethernet
USB
46
Function #
00
00
PIRQA
AD26
INTC
AD27
INTB
AD29
INTA
AD31
INTD
AD25
INTA
-
Description
PCI expansion slot 4
82559ER Ethernet
PIRQB
PIRQC
INTD
INTA
INTC
INTD
INTB
INTC
INTA
INTB
PIRQD
INTB
INTA
INTD
INTC
INTD

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