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Intel
®
82854 Graphics Memory Controller Hub (GMCH)
96 D15343-003
4.10.5 RID – Revision Identification Register
This register contains the revision number of the Intel
®
82854 GMCH. These bits are Read Only
and Writes to this register have no effect.
4.10.6 SUBC – Sub-Class Code Register
This register contains the Sub-Class Code for the Intel
®
82854 GMCH Device #0. This code is 80h
indicating a peripheral device.
4.10.7 BCC – Base Class Code Register
This register contains the Base Class Code of the Intel
®
82854 GMCH Device #0 Function #3.
This code is 08h indicating a peripheral device.
Address Offset:
Default Value:
Access:
Size:
08h
02h
Read Only
8 bits
Bit Descriptions
7:0 Revision Identification Number (RID): This is an 8-bit value that indicates the revision
identification number for the GMCH.
Address Offset:
Default Value:
Access:
Size:
0Ah
80h
Read Only
8 bits
Bit Descriptions
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.
Address Offset:
Default Value:
Access:
Size:
0Bh
08h
Read Only
8 bits
Bit Descriptions
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.