301467-005 Datasheet, PDF (178/426 Pages) Intel Corporation – Express Chipset

Integrated Graphics Device Registers (D2:F0)
(Intel® 82915G/82915GV/82915GL/ 82910GL GMCH Only)
R
9.1.5
9.1.6
RID2—Revision Identification (D2:F0)
PCI Device:
Address Offset:
Default Value:
Access:
Size:
2
08h
See bit description
RO
8 bits
This register contains the revision number for Device 2 Functions 0 and 1
Bit
Access &
Default
Description
7:0
RO
Revision Identification Number (RID): This field indicates the number of times
00h
that this device in this component has been “stepped” through the manufacturing
process. Refer to the Intel^® 82915G/82915P/82915GV/82910GL Express
Chipset Specification Update for the value of the Revision ID Register.
CC—Class Code (D2:F0)
PCI Device:
Address Offset:
Default Value:
Access:
Size:
2
09h
030000h
RO
24 bits
This register contains the device programming interface information related to the Sub-Class
Code and Base Class Code definition for the IGD. This register also contains the Base Class Code
and the function sub-class in relation to the Base Class Code.
Bit
23:16
15:8
7:0
Access &
Default
RO
03h
RO
00h
RO
00 h
Description
Base Class Code (BCC). This is an 8-bit value that indicates the base class
code for the GMCH.
03h = Display Controller.
Sub-Class Code (SUBCC): Value will be determined based on Device 0 GGC
register, bit 1.
00h = VGA compatible
80h = Non VGA
Programming Interface (PI)
00h = Hardwired as a Display controller.
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Datasheet