MS-DOS v1.25, v2.0, v4.0 Source Code - just released on Github!!

[nikola-wan]

https://github.com/microsoft/MS-DOS/tree/main

this was announced on The Register Fri 26 Apr 2024:
https://www.theregister.com/2024/04/26/ms_dos_4_open_source

including a beta release of Multitasking DOS 4.0!

 

[Ruud]

That was already announced HERE.

 

[nikola-wan]

Sorry for the repost.