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The original sources of MS-DOS 1.25 and 2.0, for reference purposes
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v1.25
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README.md
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README.md

MS-DOS logo

MS-DOS v1.25 and v2.0 Source Code

This repo contains the original source-code and compiled binaries for MS-DOS v1.25 and MS-DOS v2.0.

These are the same files originally shared at the Computer History Museum on March 25th, 2014 and are being (re)published in this repo to make them easier to find, reference-to in external writing and works, and to allow exploration and experimentation for those interested in early PC Operating Systems.

License

All files within this repo are released under the MIT (OSI) License as per the LICENSE file stored in the root of this repo.

Contribute!

The source files in this repo are for historical reference and will be kept static, so please don’t send Pull Requests suggesting any modifications to the source files, but feel free to fork this repo and experiment 😊.

If, however, you’d like to submit additional non-source content or modifications to non-source files (e.g., this README), please submit via PR, and we’ll review and consider.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.

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