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Appendix B
Embedded AMD-K6™ Processors BIOS Design Guide
23913A/0—November 2000
Preliminary Information
Function: 8000_0003h
EAX
EBX
ECX
EDX
6465_6D69h
6520_6169h
6E65_7478h
6E6F_6973h
7365_636F
2
h
0072_6F73
2
h
0000_0000h
0000_0000h
6563_6F72h
3
726F_7373h
3
0000_0000h
0000_0000h
6563_6F72h
726F_7373h
0000_0000h
0000_0000h
Function: 8000_0004h
EAX
EBX
ECX
EDX
0000_0073h
0000_0000h
0000_0000h
0000_0000h
0000_0000h
0000_0000h
0000_0000h
0000_0000h
0000_0000h
0000_0000h
0000_0000h
0000_0000h
0000_0000h
0000_0000h
0000_0000h
0000_0000h
Function: 8000_0005h
EAX
EBX
ECX
EDX
Reserved
0280_0140h
2002_0220h
2002_0220h
Reserved
0280_0140h
2002_0220h
2002_0220h
Reserved
0280_0140h
2002_0220h
2002_0220h
Reserved
0280_0140h
2002_0220h
2002_0220h
Function: 8000_0006h
EAX
EBX
ECX
EDX
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Reserved
Reserved
0100_4220h
Reserved
Reserved
Reserved
0xx0_4220h
4
Reserved
Function: 8000_0007h
EAX
EBX
ECX
EDX
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Reserved
Reserved
Reserved
0000_0007h
1
Notes:
1. Low-power versions only. Reserved on standard-power version.
2. Extended functions 8000_0002h, 8000_0003h, and 8000_0004h each return part of the processor name string. Some AMD-K6-2E pro-
cessors may have the following name string: function 8000_0002h, ECX = 322D_296Dh and EDX = 6F72_5020h, and function
8000_0003h, EAX = 7373_6563h and EBX = 0000_726Fh.
3. Extended functions 8000_0002h, 8000_0003h, and 8000_0004h each return part of the processor name string. Some AMD-K6-IIIE+
processors may have the following name string: function 8000_0002h, ECX = 492D_296Dh and EDX = 5020_4949h, and function
8000_0003h, EAX = 6563_6F72h and EBX = 726F_7373h.
4. Extended function 8000_0006h returns the processor L2 cache information. For the AMD-K6-2E+ processor Model D, ECX =
0080_4220h. For the AMD-K6-IIIE+ processor Model D, ECX = 0100_4220h.
Table 39.
CPUID Values Returned by AMD-K6™ Processors (continued)
Function
Register
AMD-K6E
Processor
(Model 7)
AMD-K6-2 &
AMD-K6-2E
Processors
(Model 8)
AMD-K6-
III
Processor
(Model 9)
AMD-K6-2E+ &
AMD-K6-
III
E+
Processors
(Model D)