Microsoft 'Re-Open Sources' MS-DOS on GitHub

An anonymous reader quotes Microsoft's Developer blog:
In March 2014, Microsoft released the source code to MS-DOS 1.25 and 2.0 via the Computer History Museum. The announcement also contains a brief history of how MS-DOS came to be for those new to the subject, and ends with many links to related articles and resources for those interested in learning more.

Today, we're re-open-sourcing MS-DOS on GitHub. Why? Because it's much easier to find, read, and refer to MS-DOS source files if they're in a GitHub repo than in the original downloadable compressed archive file.... Enjoy exploring the initial foundations of a family of operating systems that helped fuel the explosion of computer technology that we all rely upon for so much of our modern lives!

While non-source modifications are welcome, "The source will be kept static," reads a note on the GitHub repo, "so please don't send Pull Requests suggesting any modifications to the source files."

"But feel free to fork this repo and experiment!"