Development Release #1 is an early pre-release build of Microsoft Windows 1.0. It was compiled in May 1984 and was demonstrated on the Tandy 2000 personal computer.
Background
The Tandy 2000 was an Intel 80186-based computer. Since the 80186 processor was not fully compatible with the IBM PC and compatibles, this created compatibility issues dividing it from other machines of the time.
The version of Windows demonstrated here is one that was specifically designed for the Tandy 2000 personal computer, including the Intel 80186 processor and also the high resolution graphics (640x400 screen resolution at 16 colors) used by the machine itself.
Files
This build was launched from a file called DEMO.BAT
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.
This build also predates NE and uses the .MOD
extension as the main executable format.
The files here are as follows:
BOXES.MOD
/BOXES.RES
: Color demoCALC.MOD
/CALC.RES
: Calculator applicationCLIP.MOD
/CLIP.RES
: ClipboardCOMMAND.COM
: Microsoft MS-DOS command interpreterCONFIG.BIN
: System configuration fileCURSOR.MOD
: Cursor routinesDEMO.BAT
: Used to launch the Microsoft Windows demonstrationDISPLAY.MOD
: Display driver fileFONT.RES
: Font resourcesGDI.MOD
: GDI (Graphics Device Interface) system fileGDI16.MOD
: GDI (Graphics Device Interface) 16-bit system fileGDI8.MOD
: GDI (Graphics Device Interface) 8-bit system fileKERNEL.MOD
: Microsoft Windows kernel system fileKEYBOARD.MOD
: Keyboard system fileKEYNAMES.BIN
: Input translation table lookup fileMB.EXE
: Module bootMOUSE.MOD
: Mouse driver filePUZZLE.MOD
/PUZZLE.RES
: Puzzle sample applicationREVERSI.MOD
/REVERSI.RES
: Reversi sample applicationSAMPLE.MOD
/SAMPLE.RES
: Sample ApplicationSHELL.MOD
/SHELL.RES
: "DOS Window" shell applicationTEST.MOD
: Test executable fileTIMER.MOD
: System timer driver fileWINDOWS.MOD
/WINDOWS.RES
: Microsoft Windows User component