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Intel
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82854 Graphics Memory Controller Hub (GMCH)
54 D15343-003
4.8.5 RID – Register Identification
This register contains the revision number of the GMCH Device #0. These bits are read only and
writes to this register have no effect.
4.8.6 SUBC – Sub Class Code Register
This register contains the Sub-Class Code for the GMCH Device #0. This code is 00h indicating a
Host Bridge 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 Device #0.
Address Offset:
Default Value:
Access:
Size:
0Ah
00h
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
the GMCH falls. The code is 00h indicating a Host Bridge.