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Microsoft finally open sources DOS 1.0 - and it's so much more than the code

Follow ZDNET: Add us as a preferred source on Google. PC-DOS 1.00 would lead to Microsoft becoming computing's top dog Microsoft continues to embrace open source. The source code and annotations ...
Ars Technica

Microsoft surprises MS-DOS fans with remake of ancient text editor that works on Linux

Last month, Microsoft released a modern remake of its classic MS-DOS Editor, bringing back a piece of computing history that first appeared in MS-DOS 5.0 back in 1991. The new open source tool, built ...
Ars Technica

Microsoft open-sources “the earliest DOS source code discovered to date”

I always thought it stood for Disk Operating System. I was fucking around with it back in the early 80's after I got out of the Navy, and had taken some BASIC courses. I wrote a program to find out ...