32bit DOS development with Open Watcom

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32-bit compilation tutorial for Open Watcom.

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DOS

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2026-10-10

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1. ▲
   Open Watcom V2 github.com

   tool category #dos link ↗

   GitHub fork which is actively maintained and is ported to 64-bit Windows and Linux.

   
2. ▲
   Open WatCom github.com

   site category #cpp link ↗

   Watcom C, C++, and Fortran cross compilers and tools. [Sybase Open Watcom Public License]

3. ▲
   Open Watcom web.archive.org

   site category #dos link ↗

   Formerly commercial C/C++ development environment for 16- and 32-bit DOS and Windows. The current official version is 1.9. A GitHub fork is also available. Used for Doom I-II, Warcraft I-II, Duke Nukem 3D, Full Throttle, Dark Forces and Retro City Rampage.

4. ▲
   80x86 16-bit Compiling How-to by Alexei A. Frounze alexfru.narod.ru

   site category #dos link ↗

   16-bit compilation tutorial for Borland/Turbo C/C++ and Open Watcom. Goes into depth of memory addressing and memory models.

5. ▲
   How to build DOS COM files with GCC by Chris Wellons nullprogram.com

   site category #dos link ↗

   Build process of Chris Wellons's DOS Defender game using DJGPP. Goal was to create a 32-bit 80386 COM executable.

6. ▲
   32Lite web.archive.org

   site category #executable-packing link ↗

   Compression tool for executable files created with Watcom C/C++ compiler.

DOS › Tutorials and programming resources > Compiling: “32-bit compilation tutorial for Open Watcom.”