Microsoft Just Released MS-DOS Source Code!
The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes - microsoft/MS-DOS
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Did they use source control of any kind back then?
Soke vrsions of DOS used a VCS named Source Library Manager, SLM, aka Slime. Later, it became Microsoft Delta, and eventually SourceSafe, then they switched to SourceDepot, which was a flavor of Perforce.
Wow ok, thanks!