82443BX Datasheet, PDF (36/132 Pages) Intel Corporation – Host Bridge/Controller

Register Description
3.3.1
3.3.2
VID—Vendor Identification Register (Device 0)
Address Offset:
Default Value:
Attribute:
Size:
00–01h
8086h
Read Only
16 bits
The VID Register contains the vendor identification number. This 16-bit register combined with
the Device Identification Register uniquely identify any PCI device. Writes to this register have no
effect.
Bit
Description
15:0
Vendor Identification Number. This is a 16-bit value assigned to Intel. Intel VID = 8086h.
DID—Device Identification Register (Device 0)
Address Offset:
Default Value:
Attribute:
Size:
02–03h
7190h/7192h
Read Only
16 bits
This 16-bit register combined with the Vendor Identification register uniquely identifies any PCI
device. Writes to this register have no effect.
Bit
Description
Device Identification Number. This is a 16 bit value assigned to the 82443BX Host-to-PCI
Bridge Function #0.
15:0
7190h = When the AGP_DIS bit (PMCR[1]) is set to 0, the DID =7190h.
7192h = When the AGP_DIS bit is set to 1, the DID = 7192h.
3-10
82443BX Host Bridge Datasheet