
82815 GMCH
R
Datasheet
85
3.5.1.
VID1—Vendor Identification Register (Device 1)
Address Offset:
Default Value:
Attribute:
Size:
00–01h
8086h
Read-Only
16 bits
The VID1 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.
3.5.2.
DID1—Device Identification Register (Device 1)
Address Offset:
Default Value:
Attribute:
Size:
02–03h
1131h
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
15:0
Device Identification Number.
This is a 16 bit value assigned to the GMCH AGP interface device.
1131h = Device ID for Device 1.
3.5.3.
PCICMD1—PCI-PCI Command Register (Device 1)
Address Offset:
04–05h
Default:
0000h
Access:
Read/Write, Read-Only
Size
16 bits
15
10
9
8
Reserved (0)
FB2B
(Not Impl)
SERR En
7
6
5
4
3
2
1
0
Addr/Data
Stepping
(Not Impl)
Parity
Error En
(Not Impl)
Reserved
Mem WR
& Inval En
(Not Impl)
Special
Cycle En
(Not Impl)
Bus
Master En
Mem Acc
En
I/O Acc En