845GL datasheet(56/193 Pages) INTEL

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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:

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.

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