Datasheet

90 Datasheet

4.9.5 RID – Revision Identification Register

Address Offset: 08h

Default Value: 02h

Access: Read Only

Size: 8 bits

This register contains the revision number of the Intel 855GM/GME GMCH Device #0. These

bits are Read Only and Writes to this register have no effect.

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.

4.9.6 SUBC – Sub-Class Code Register

Address Offset: 0Ah

Default Value: 80h

Access: Read Only

Size: 8 bits

This register contains the Sub-Class code for the Intel 855GM/GME GMCH Device #0. This code

is 80h indicating Other Peripheral device.

Bit Descriptions

7:0 Sub-Class Code (SUBC): This is an 8-bit value that indicates the category of Peripheral device into

which the GMCH Function #1 falls. The code is 80h indicating Other Peripheral device.

4.9.7 BCC – Base Class Code Register

Address Offset: 0Bh

Default Value: 08h

Access: Read Only

Size: 8 bits

This register contains the Base Class code of the Intel 855GM/GME GMCH Device #0 Function

#1. This code is 08h indicating Other Peripheral device.

Bit Description

7:0 Base Class Code (BASEC): This is an 8-bit value that indicates the Base Class Code for the GMCH.

This code has the value 08h, indicating Other Peripheral device.