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

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

Microsoft makes 86-DOS 1.00 open source on its 45th birthday

History painstakingly preserved.

Microsoft releases earliest known DOS source code

DOS, Microsoft is releasing the earliest known source code listings – transcribed from yellowed continuous printouts.
Radio Free Europe/Radio Liberty

Suspected Russian Hackers Behind Massive Breach Accessed Microsoft's Source Code

Suspected Russian government hackers behind a massive intrusion of government and private company networks were able to gain access into Microsoft’s source code, a key building block for software or ...
Ars Technica

Microsoft open-sources Bill Gates’ 6502 BASIC from 1978

On Wednesday, Microsoft released the complete source code for Microsoft BASIC for 6502 Version 1.1, the 1978 interpreter that powered the Commodore PET, VIC-20, Commodore 64, and Apple II through ...

Microsoft Open Sources Some of the Earliest MS-DOS Code

Microsoft today announced the release of the source code for he 86-DOS 1.00 kernel, which is among the earliest code for what became MS-DOS.