Windows 1.0/Development Release 5

File:Windows 1 dr5 ms-dos-executive.png

MS-DOS Executive

Windows Developer Release 5 (known as DR5) is an alpha version of Windows 1.x.

There are sample application to demonstrate the "power" of windows.

• Graph & Chart application
• Font application
• Clock
• Puzzle game
• Reversi game

To install DR5 you will need PCem or an equal IBM AT/XT emulator. Also DR5 only run on MS-DOS up to Version 2.x.

System requirements

Hercules Graphics Adapter support

Windows 1.0 DR5 includes drivers for Hercules Graphics Adapter (HGA), however the installator doesn't provide an option to choose and installs Color Graphics Adapter (CGA) drivers by default (ibmcolor.cin and ibmcolor.din). To install Hercules drivers you may either edit INSTALL.BAT installation file or install DR5 with default CGA drivers and replace them with HGA drivers later.

To change drivers Windows installs by default open INSTALL.BAT file and replace

<math>copy a:ibmcolor.cin %1\windows\test\cursor.exe copy a:ibmcolor.din %1\windows\test\display.exe</math>

with

copy a:hercules.cin %1\windows\test\cursor.exe copy a:hercules.din %1\windows\test\display.exe