C3/CyrixIII/WinChip Controller ver0.08b
This tool modifies VIA C3/CyrixIII and IDT WinChip processor's configuration, such as vender string, family ID, model ID and stepping ID , on real-mode DOS. Moreover, BF (Bus Clock Frequency Ratio) of C3/CyrixIII could be changed.
Please execute this tool under self-commitment.
!!! CAUTIONS !!!
C3 Nehemiah has vulnerability in Another Instruction Set (AIS).
This tool disables the AIS when the AIS is enabled.
However, newer version should be used because previous version of this tool always enables the AIS !
This tool is not for config.sys, but for command prompt.
Please apply some freewares such as DRVEXEC which execute non-config.sys program in config.sys.
*** Programs ***
* TO_INTEL.COM - Change vender string to "GenuineIntel"
* BACK_VIA.COM - Back to original vender string of "CentaurHauls"
* C3SETUP.EXE - See below.
*** Usage of C3SETUP.EXE ***
1. Type "C3SETUP" and press [Enter].
2. Following its indication, customized C3SET.COM will be resulted.
3. You can use the C3SET.COM on command prompt.
Otherwise, some optional functions are available using command-line options.
*** Options ***
TO_INTEL.COM and BACK_VIA.COM don't have any options.
C3SETUP.EXE has following options.
(h=hexadecimal b=binary c=characters)
/V"cccccccccccc" : Change vender string (require quotation marks)
/VI : Disguise vender string as "GenuineIntel"
/VC : Overwrite vender string as "CentaurHauls"
/V : Change to original vender string (CentaurHauls)
/Fh : Change family ID
/Mh : Change model ID
/Sh : Change stepping ID
/D : View BF bit of C3/CirixIII (using LongHaul/PowerSaver)
/Dbbbb : Change BF3-0 for Samuel, Samuel2 and Ezra (LongHaul)
/Dbbbbb : Change BF4-0 for Nehemiah and Ezra-T (PowerSaver)
/H : Hide text
/P : Skip processor check (then, don't use /V/F/M/S and /D)
/I : Force using VIA's instructions (then, don't use to WinChip)
For example,
> C3SETUP M /D0010 [Enter]
> C3SET [Enter]
It changes Bus Clock Frequency Ratio to x4.0 (for Samuel, Samuel2 and Ezra).
Ezra-T and Nehemiah require 5-digits including upper 0.
For further imformation, see "C3SETUP /O" and "C3SETUP /F"
KAZZEZ
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