Intel i7-2600 CM8062300834302S User Manual

134

Datasheet, Volume 2

This register contains the revision number for Device 2 Functions 0. These bits are read 
only and writes to this register have no effect.

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.

7:4

RO-FW

0h

Uncore

Revision Identification Number MSB (RID_MSB)
Four MSB of RID. Refer to the 2nd Generation Intel

Specification Update for the value of the RID register. 

3:0

RO-FW

0h

Uncore

Revision Identification Number (RID)
Four LSB of RID. Refer to the 2nd Generation Intel

Specification Update for the value of the RID register. 

23:16

RO-V

03h

Uncore

Base Class Code (BCC)
This is an 8-bit value that indicates the base class code.
03h indicates a Display Controller.

15:8

RO-V

00h

Uncore

Sub-Class Code (SUBCC)
00h = VGA compatible

7:0

RO

00h

Uncore

Programming Interface (PI)
00h indicates a Display Controller..