- December 2017
- April 2017
- June 2016
- February 2016
- November 2015
- January 2015
- August 2014
- July 2014
- May 2014
- March 2014
- February 2014
- January 2014
- November 2013
- August 2013
- June 2013
- May 2013
- April 2013
- March 2013
- February 2013
- December 2012
- November 2012
- September 2012
- June 2012
- April 2012
- March 2012
- February 2012
- January 2012
- December 2011
- November 2011
- September 2011
- July 2011
- June 2011
- May 2011
- March 2011
- January 2011
- October 2010
- June 2010
- May 2010
- April 2010
- March 2010
- February 2010
- January 2010
- December 2009
- September 2009
- July 2009
- June 2009
- May 2009
- March 2009
- September 2008
- April 2008
- December 2007
- June 2007
- June 2005
- September 2004
- May 2002
- October 2001
- August 2001
Patches for old DOS games
I really like to play around with old DOS games, especially through DOSBox. Although the DOSBox devs have done an excellent job and yours truly has even submitted a few patches to this wonderful open source product, there are still some games that remain troublesome because of bugs in the games themselves. If I've managed to locate and fix the defective code in the game, you'll find the patch on this page. Just download the patch, place it inside the game directory and run it (only once). Your game will then be patched and should work inside DOSBox.
The patches exist as small binary files (with a large description embedded) or as self-executing files for Windows. If you download the patch files themselves, you'll need to run them through my Patcher tool.
Note: You won't find the actual games here. They are not mine to distribute.
Bill and Ted's Excellent Adventure
Fixes a crash at the barfight in 1878.
- patch file for use with Patcher.
- executable version runs directly from Windows.
Delta V - CD version
This game's copy protection routine misfires on NT-based systems (Windows 2000, XP and Vista) even when run under DOSBox. Whether it does so or not depends on your time zone setting. This replacement executable disables that part of the copy protection (but not all -- you still need an original copy of the game). In order to use it, you will need to copy the CD to your hard drive, replace D.EXE with the one in the ZIP file below and and mount the copied CD in DOSBox.
Ghostbusters 2
Fixes a freeze in the intro when digitised sound is enabled.
- patch file for use with Patcher.
- executable version runs directly from Windows.
Omnicron Conspiracy
DOSBox does not properly call INT16/AH=01 (and INT16/AH=00) for a keystroke, which causes Omnicron Conspiracy to freeze at the intro screen. This little wrapper program fixes that. Just place OMNICRON.COM in the game directory and start the game using OMNICRON.COM instead of OMNICRON.EXE.
Note: There are two versions of Omnicron Conspiracy. One is published by Epyx, the other by ImageWorks. The latter requires the fix of INT16/AH=00, while the former doesn't (although it doesn't hurt). This has been added in version 1.1 of the patch. For more information, also check the blog posts:
- wrapper program for use inside DOSBox. Assembly language (DOS Debug) source code is also available.
PC Paint 3.1
This program does some unnecessary checks on the installation of a mouse driver. It could be fixed by relocating DOSBox' mouse driver handler, but that's overkill. You might as well use this simple patch for the executable or the TSR. The TSR is slightly less convenient as you need to run it in your DOSBox session before running PCPaint and it takes up 304 bytes of memory, but it will work for other versions of the program as well as other programs that do the same thing.
- patch file for use with Patcher.
- executable version runs directly from Windows.
- TSR program for use inside DOSBox. Assembly language (DOS Debug) source code is also available.