Category : Unprotects for Games and Such
Archive   : CM3000.ZIP
Filename : CM3UNP.TXT

 
Output of file : CM3UNP.TXT contained in archive : CM3000.ZIP
To unprotect Chessmaster 3000, you must have a exact duplicate of the originals
(using CopyIIPc, Teledisk, etc), Diskcopy will not work. This patch was
used on the following file:
install.exe 48290 11-13-91 12:00a

On your copied disk:

1) You need to change the attribute of install.exe. from Read-Only.
Using MS-DOS 5.0 and assuming disk 1 of Chessmaster 3000 is
in drive B:
attrib b:install.exe -R

2) Do a search for the following bytes in install.exe: (Using Norton Editor,
Debug, or your favorite editor)
91 05 40 E7 80
Replace with:
91 05 60 E7 80

3) Do a search for the following bytes in install.exe:
4C 8D 54 07 E2
Replace with:
4C 8D 74 07 E2

4) Change the attribute of install.exe back to Read-Only.
attrib b:install.exe +R

That's all. You can now install the game using this new disk. I believe
the reason diskcopy does not work is because of the Volume Label. It is
probably possible for someone to fix install so it doesn't look at the
Volume, but I have spent too long on this already. If someone absolutely
HAS to have that fixed, I can be reached on Rustie & Edie's BBS

Mike Kohler


  3 Responses to “Category : Unprotects for Games and Such
Archive   : CM3000.ZIP
Filename : CM3UNP.TXT

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/