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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 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 ...
Liliputing

Microsoft releases source code for MS-DOS 4.0 (and Multitasking DOS)

A decade after releasing the source code for MS-DOS 1.1 and MS-DOS 2.0, Microsoft has open sourced a (slightly) more recent operating system: MS-DOS 4.0. First released in 1988, you can now download ...
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 ...
Electronic Design

Now and Then: Get Your Copy of MS-DOS

How was DOS part of the PC revolution? Is DOS still around? What did Bill write a long time ago? Remember the DOS prompt? DOS stands for disk operating system. The latest announcement is a blast from ...
TechSpot

Microsoft releases MS-DOS 4.0 source code and floppy images through an open-source license

TL;DR: Microsoft will likely never release the original source code of Windows into the wild, but the company is clearly interested in sharing important episodes of its software development history.
ZDNet

Microsoft finally open sources DOS 1.0 – and it’s so much more than the code

Before “Micro Soft” became Microsoft, Bill Gates wrote BASIC interpreters. Microsoft’s first shipping operating system was a Unix distro called Xenix. Then, in 1980, Microsoft got its shot at the big ...