Liliputing

Microsoft releases MS-DOS source code to GitHub

Four years after working with the Computer History Museum to release the source code for MS-DOS, Microsoft is “re-open-sourcing” its command line operating system from the ’80s. This time the company ...
InfoQ

Microsoft and IBM Release MS-DOS 4.0’s Source Code under the MIT License

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. In this episode, Thomas Betts chats with ...
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 and IBM release source code for one of the weirdest versions of MS-DOS

That screenshot seems to be MS-DOS 5.0 or later. How many end users had hard drives when 4.0 was released? Click to expand... We had a 20MB hard drive in a PC-XT clone made by Sanyo which was running ...
Hackaday

Microsoft Updates MS-DOS GitHub Repo To 4.0

We’re not 100% sure which phase of Microsoft’s “Embrace, Extend, and Extinguish” gameplan this represents, but just yesterday the Redmond software giant decided to grace us with the source code for MS ...
Ars Technica

Microsoft open-sources infamously weird, RAM-hungry MS-DOS 4.00 release

Microsoft has open-sourced another bit of computing history this week: The company teamed up with IBM to release the source code of 1988’s MS-DOS 4.00, a version better known for its unpopularity, ...
HotHardware

Microsoft's MS-DOS Goes Open Source Three Decades After Release, Heads To GitHub

At the risk of dating myself, I cut my teeth on MS-DOS (after moving on from the Commodore 64, that is), the command-line interface operating system that predated Windows. MS-DOS first arrived in the ...
PC World

Microsoft made DOS 4.0 open-source, but not everyone is happy

Microsoft and IBM’s DOS operating system is an important milestone in the history of personal computing, and it’s just as important that we can dig into it and see what makes it tick. That’s part of ...
PC World

Microsoft publishes MS-DOS, Word for Windows source code

Microsoft arguably built its business on MS-DOS, and on Tuesday the software giant and the Mountain View, CA-based Computer History Museum took the unprecedented step of publishing the source code for ...
Computerworld

FORMAT C: — MS-DOS source code ‘free’ (as in lite-beer)

Iain Thomson eyes the future: Retro-computing fans got a treat…when Microsoft donated the source code of MS DOS 1.1 and 2 to the…CHM, along with the first version of Word for Windows. … The code isn’t ...
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.