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PCI Configuration Space Map
Table 36. PCI Configuration Space Map
Bus
Number (hex)
Device
Number (hex)
Function
Number (hex) Description
00 00 00 Intel 82443BX (PAC)
00 01 00 Intel 82443BX (PAC) A.G.P. bus
00 07 00 Intel 82371EB (PIIX4E) PCI/ISA bridge
00 07 01 Intel 82371EB (PIIX4E) IDE bus master
00 07 02 Intel 82371EB (PIIX4E) USB
00 07 03 Intel 82371EB (PIIX4E) power management
00 0B 00 Audio/multimedia controller
00 0D 00 PCI expansion slot 1 (J4D2)
00 0E 00 PCI expansion slot 2 (J4D1)
00 0F 00 PCI expansion slot 3 (J4C1)
00 10 00 PCI expansion slot 4 (J4B1)
Interrupts
Table 37. 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 Diskette drive controller
7 LPT1*
8 Real time clock
9 Reserved
10 USB/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