Windows 1.0/Development Release 2

**Development Release #2**

Kernel version	1.0
CPU architecture	x86 (16-bit)
Compile date	June 1984

Development Release #2 is a pre-release build of the Microsoft Windows 1.0 operating system, compiled sometime in June 1984. Only the Tandy 2000 variant of this build is currently known to exist, however, a PC-compatible variant of this build would've been shipped as well.

Overview

This build, respectively its Tandy 2000 variant, was demonstrated at the Boston Computer Society meeting in June 1984.^[1] Just like the previous, this build was launched from a file called DEMO.BAT, and was ran from a single 5,25" floppy disk.

The Clipboard application was not included in the demonstrated build. It is currently unknown why it was removed.

File list

File list (as seen in the DOS Window)

BOXES.MOD/BOXES.RES - Boxes application (color demo)
CALC.MOD/CALC.RES - Calculator application
COMMAND.COM - Microsoft MS-DOS command interpreter
CONFIG.BIN - The system configuration file
CURSOR.MOD - The Cursor Routines file
DEMO.BAT - A batch file used to launch the Microsoft Windows demonstration
DISPLAY.MOD - Display driver
FONT.RES - Font resources
GDI.MOD - GDI (Graphics Device Interface) system file
KERNEL.MOD - Microsoft Windows kernel system file
KEYBOARD.MOD - Keyboard system file
KEYNAMES.BIN - Input translation table lookup file
MB.EXE - Module boot
MOUSE.MOD - Mouse driver
PUZZLE.MOD/PUZZLE.RES - Puzzle application
REVERSI.MOD/REVERSI.RES - Reversi application
SAMPLE.MOD/ SAMPLE.RES - Sample application
SHELL.MOD/SHELL.RES - "DOS Window" shell application (later became MS-DOS Executive (MSDOS.EXE)
TIMER.MOD - System timer driver
WINDOWS.MOD/WINDOWS.RES - Microsoft Windows User component