Microsoft Word 1.1a Runs Natively on x64 Windows

Microsoft Word for Windows 1.1a, Native X64 Port

A developer has ported the original Microsoft Word for Windows 1.1a, codenamed Opus, to run as a native 64-bit Windows executable. The project builds the original C source and resources, replacing 16-bit assembly, segmented memory, and Win16 APIs with modern x64-compatible code. It includes a full test suite covering UI workflows like typing, formatting, and saving. The port is not an emulator but a true recompilation, preserving the original user experience.

This is not an emulator or a reimplementation using a modern editor control.
  1. acmdas

    Back in '85-6 I developed training for USDA (using Dan Bricklin's Demo) for a curses version of Word 5 that ran on 3B2s with SysV v2. I'd be very happy to see that ported to Linux or one of the BSDs.

    In fact, I'd love to see both Word and Excel '98 on one of my workstations. IMHO things went South after that.

    I had to use Windows and Office off and on with clients up to 2010 and I'm sure that Excel provided some important edge-case functionality after '98, but for me the UI went steadily to sh*t.

  2. spider-mario

    Tried to build it but it references a `cmake/GenerateMenuHelpHeader.cmake` that seems to be absent from the repository?

  3. ulfw

    A screenshot or two would have been nice

  4. BaudouinVH

    how complicated would a port to linux be ?

  5. pmkary

    Cool!

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2026-08-09