Intel VS440FX - PCI Configuration Space Map; Interrupts

VS440FX Motherboard Technical Product Specification
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2.4 PCI Configuration Space Map
Table 11. PCI Configuration Space Map
Bus
Number (hex)
Device
Number (hex)
Function
Number (hex) Description
00 00 00 Intel 82440FX (PMC) Host bridge
00 07 00 Intel 82371FB (PIIX3 ) PCI/ISA bridge
00 07 01 Intel 82371FB (PIIX3 ) IDE Bus Master
00 07 02 Intel 82371FB (PIIX3 ) USB
00 13 00 PCI Expansion Slot: J2D1
00 11 00 PCI Expansion Slot: J2D2
00 0F 00 PCI Expansion Slot: J2E1
00 0B 00 PCI Expansion Slot: J2F1
2.5 Interrupts
Table 12. Interrupts
IRQ System Resource
NMI I/O Channel Check
0 Reserved, Interval Timer
1 Reserved, Keyboard Buffer Full
2 Reserved, Cascade Interrupt from Slave PIC
3 COM2*
4 COM1*
5 Audio if present, else user available
6 Floppy Drive
7 LPT1*
8 Real Time Clock
9 Audio if present, else user available
10 User available
11 Audio if present, else user available
12 Onboard Mouse Port if present, audio if present, else user available
13 Reserved, Math Coprocessor
14 Primary IDE if present, else user available
15 Secondary IDE if present, audio if present, else user available
* Default, but can be changed to another IRQ