Pci Configuration Space Map; Interrupts - Intel AL440LX Product Manual

Technical Reference

PCI Configuration Space Map

Table 34.

PCI Configuration Space Map

Bus Device
Number (hex) Number (hex)
00 00
00 01
00 07
00 07
00 07
00 07
00 0D
00 0E
00 0F
00 10

Interrupts

Table 35.

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 LPT2 (Plug and Play option) / audio / user available
6 Floppy drive
7 LPT1*
8 Real time clock
9 Reserved
10 User available
11 Windows Sound System* / user available
12 Onboard 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
52
Function
Number (hex) Description
00 Intel 82440LX (PAC)
00 Intel 82371AB (PIIX4 ) A.G.P. bus
00 Intel 82371AB (PIIX4 ) PCI/ISA bridge
01 Intel 82371AB (PIIX4 ) IDE bus master
02 Intel 82371AB (PIIX4 ) USB
03 Intel 82371AB (PIIX4 ) power management
00 PCI expansion slot 1 (J4D2)
00 PCI expansion slot 2 (J4D1)
00 PCI expansion slot 3 (J4C1)
00 PCI expansion slot 4 (J4B1)