82443GX Datasheet, PDF (34/128 Pages) Intel Corporation – Intel 440GX AGPset: 82443GX 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
71A0h/71A2h
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 82443GX Host-to-PCI
Bridge Function #0.
15:0
71A0h = When the AGP_DIS bit (PMCR[1]) is set to 0, the DID =71A0h.
71A2h = When the AGP_DIS bit is set to 1, the DID = 71A2h.
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82443GX Host Bridge Datasheet