- Microsoft open-sources "the earliest DOS source code discovered to date" Ars Technica
- Transcribing The Source Of The First DOS For The IBM PC Hackaday
- DOS 1.00 source code is opened by Microsoft Adafruit
- The Nostalgic Software That Made Microsoft Huge Is Now Open Source For Anyone To Use bgr.com
- Microsoft finally open sources DOS 1.0 - and it's so much more than the code ZDNET








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