Windows 1.0 Tandy 2000 builds

Windows 1.0 "Tandy 2000" build is an early pre-release version of Windows 1.0 that was demonstrated on the Tandy 2000 Personal Computer.

Files
The pre-release version launched from a file called  and was intended to be run from a single floppy disk. This loaded a copy of Windows with several sample applications which could easily be loaded from there.

While versions of Windows for the IBM PC and compatibles generally used the  file extension for executable program files, this pre-release instead used the   extension for most executable files.