AMD Phenom 8650 Triple-Core HD8650WCGHBOX User Manual

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Rev. 3.16 February 2008

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PkgTyp[3:0] is from CPUID Fn8000_0001_EBX. This field specifies the package type as defined 
in the BIOS and Kernel Developer’s Guide (BKDG) for AMD Family 10h Processors, order 
#31116, and is used to index the appropriate string tables from Table 3.

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NC[7:0] is from CPUID Fn8000_0008[ECX]. This field identifies how many physical cores are 
present as defined in the BIOS and Kernel Developer’s Guide (BKDG) for AMD Family 10h 
Processors, order #31116, and is used to index the appropriate strings from Table 4 on page 9, 
Table 5 on page 9, Table 6 on page 10, and Table 7 on page 10.

The name string is formed as follows:

1. Translate Model[6:0] into an ASCII value (Model), model numbers will range from 01-99. Model 

numbers less than 10 should include a leading zero, e.g., 09.

2. If Model[6:0] = 00h, skip steps 3 through 6 and program the name string as follows:

If Pg[0] = 0, Name string = AMD Engineering Sample

Else If Pg[0] = 1, Name string = AMD Thermal Test Kit

3. Else select the appropriate string tables based on PkgTyp[3:0] from Table 3

4. Index into the referenced tables using String1[3:0], String2[3:0], and NC[7:0] to obtain the 

String1 and String2 values.

5. If String1 is an undefined value skip step 6 and program the name string as follows:

6. Else concatenate the strings with the two character ASCII translation of Model[3:0] from step 1 to 

obtain the name string as follows:

If String2 is undefined, Name string = String1, Model

Else, Name string = String1, Model, String2

0h

1h

2h-Fh

Reserved

Reserved