TECH Signal 484
Microsoft Word for Windows 1.1a, Native X64 Port
A native x64 port of Microsoft Word for Windows 1.1a allows the historic 16-bit application to run as a 64-bit Windows executable.
Engineers can now execute the legacy Word binary on modern 64-bit Windows without relying on emulation or virtual machines. The port provides a concrete example of translating Win16 code to x64, illustrating how to handle segmented memory, assembly entry points, and Win16 API adaptations. It also supplies a test suite that validates compatibility, offering a reference for similar legacy-software migration efforts.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
The port translates original 16-bit assembly and segmented memory handling to x64-safe C/C++ while preserving the original source as a reference.
Building the port requires Visual Studio 2022 with the C++ desktop workload, a Windows 10 or Windows 11 SDK, CMake 3.25 or newer, and PowerShell.
Automated tests cover startup, UI workflows, data structures, and command tables to verify that the ported executable behaves like the original Word.
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