Datasheet

Register Description
56 Intel
®
82845G/82845GL/82845GV GMCH Datasheet
3.5.1.11 SVID—Subsystem Vendor Identification Register (Device 0)
Address Offset: 2C–2Dh
Default Value: 0000h
Access: R/W-Once
Size: 16 bits
This value is used to identify the vendor of the subsystem.
3.5.1.12 SID—Subsystem Identification Register (Device 0)
Address Offset: 2E–2Fh
Default Value: 0000h
Access: R/W-Once
Size: 16 bits
This value is used to identify a particular subsystem.
3.5.1.13 CAPPTR—Capabilities Pointer Register (Device 0)
Address Offset: 34h
Default Value: E4h
Access: RO
Size: 8 bits
The CAPPTR provides the offset that is the pointer to the location of the first device capability in
the capability list.
Bit Description
15:0
Subsystem Vendor ID (SUBVID)—R/WO. This field should be programmed during boot-up to
indicate the vendor of the system board. After it has been written once, it becomes read only.
Bit Description
15:0
Subsystem ID (SUBID)—R/WO. This field should be programmed during BIOS initialization. After it
has been written once, it becomes read only.
Bit Description
7:0
Pointer Address. This field provides an address that is the offset of the first capability ID register
block. For the GMCH, the first capability is the Product-Specific Capability that is located at offset
E4h.