82845GL datasheet(53/193 Pages) INTEL

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Intel® 82845G/82845GL/82845GV GMCH Datasheet

3.5.1.5

RID

—Revision Identification Register (Device 0)

Address Offset:

08h

Default Value:

See table below

Access:

Size:

8 bits

This register contains the revision number of the GMCH Device 0.

3.5.1.6

SUBC

—Sub-Class Code Register (Device 0)

Address Offset:

0Ah

Default Value:

00h

Access:

Size:

8 bits

This register contains the Sub-Class Code for the GMCH Device 0.

3.5.1.7

BCC

—Base Class Code Register (Device 0)

Address Offset:

0Bh

Default Value:

06h

Access:

Size:

8 bits

This register contains the Base Class Code of the GMCH Device 0.

Bit

Description

7:0

Revision Identification Number (RID).

This is an 8-bit value that indicates the revision identification

number for the GMCH Device 0.

82845G and 82845GL GMCH

01h = A1 Stepping

03h = B1 Stepping

82845GV GMCH

01h = A1 Stepping

Bit

Description

7:0

Sub-Class Code (SUBC).

This is an 8-bit value that indicates the category of Bridge into which the

GMCH falls.

00h = Host Bridge.

Bit

Description

7:0

Base Class Code (BASEC).

This is an 8-bit value that indicates the Base Class Code for the

GMCH.

06h = Bridge device.

82845GL Datasheet(PDF) 53 Page - Intel Corporation

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