Lenovo AD80582QH056003 Datenblatt Seite 126

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Features
126 Intel® Xeon® Processor 7400 Series Datasheet
7.4.3.4.6 RES4: Reserved 4
These locations are reserved. Writes to this register have no effect.
7.4.3.4.7 CDCKS: Cache Data Checksum
This location provides the checksum of the Cache Data Section. Writes to this register
have no effect.
7.4.3.5 Package Data
This section provides package revision information.
7.4.3.5.1 PREV: Package Revision
This location tracks the highest level package revision. It is provided in ASCII format of
four characters (8 bits x 4 characters = 32 bits). The package is documented as 1.0,
2.0, etc. If this only consumes three ASCII characters, a leading space is provided in
the data field.
Example: The Intel® Xeon® Processor 7400 Series utilizes the first revision of the FC-
mPGA8 package. Thus, at offset 32-35h, the data is a space followed by 1.0. In hex,
this would be 20h, 31h, 2Eh, 30h.
Offset: 2Fh-30h
Bit Description
15:0 RESERVED 4
0000h-FFFFh: Reserved
Offset: 31h
Bit Description
7:0 Cache Data Checksum
One Byte Checksum of the Header Section
00h- FFh: See Section 7.4.4 for calculation of the value
Offset: 32h-35h
Bit Description
31:24 Character 4
ASCII character or 20h
00h-0FFh: ASCII character
23:16 Character 3
ASCII character
00h-0FFh: ASCII character
15:8 Character 2
ASCII character
00h-0FFh: ASCII character
7:0 Character 1
ASCII character
00h-0FFh: ASCII character
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