Datasheet

108 Datasheet

4.10.5 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. 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.

4.10.6 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 a peripheral device.

Bit Description

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

falls. The code is 80h indicating other peripheral device.

4.10.7 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

#3. This code is 08h indicating a 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.