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845GL 数据表(PDF) 53 Page - Intel Corporation

部件名 845GL
功能描述  Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)
PDF  193 Pages
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制造商  INTEL [Intel Corporation]
网页  http://www.intel.com
标志 INTEL - Intel Corporation

845GL 数据表(HTML) 53 Page - Intel Corporation

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Intel® 82845G/82845GL/82845GV GMCH Datasheet
53
Register Description
3.5.1.5
RID
Revision Identification Register (Device 0)
Address Offset:
08h
Default Value:
See table below
Access:
RO
Size:
8 bits
This register contains the revision number of the GMCH Device 0.
3.5.1.6
SUBC
Sub-Class Code Register (Device 0)
Address Offset:
0Ah
Default Value:
00h
Access:
RO
Size:
8 bits
This register contains the Sub-Class Code for the GMCH Device 0.
3.5.1.7
BCC
Base Class Code Register (Device 0)
Address Offset:
0Bh
Default Value:
06h
Access:
RO
Size:
8 bits
This register contains the Base Class Code of the GMCH Device 0.
Bit
Description
7:0
Revision Identification Number (RID).
This is an 8-bit value that indicates the revision identification
number for the GMCH Device 0.
82845G and 82845GL GMCH
01h = A1 Stepping
03h = B1 Stepping
82845GV GMCH
01h = A1 Stepping
Bit
Description
7:0
Sub-Class Code (SUBC).
This is an 8-bit value that indicates the category of Bridge into which the
GMCH falls.
00h = Host Bridge.
Bit
Description
7:0
Base Class Code (BASEC).
This is an 8-bit value that indicates the Base Class Code for the
GMCH.
06h = Bridge device.



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