Microsoft Word for Windows 1.1a, Native X64 Port

A developer has created a fully functional native x64 port of Microsoft Word for Windows 1.1a (codenamed Opus), converting the original 16-bit application to run as a 64-bit Windows executable without using emulation or reimplementation. The project rebuilds the original Word source code with modern replacements for outdated 16-bit assembly and Win16 platform components, and includes a complete test suite covering runtime, data structures, UI workflows, and file operations. The code is available on GitHub with build instructions for Windows 10/11 systems using Visual Studio 2022 and CMake.