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

This repo contains the original source-code and compiled binaries for MS-DOS 1.25 and MS-DOS 2.0.

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The source files in this repo are for historical reference and will be kept static, so please don’t send Pull Requests suggesting any modifications to the source files, but feel free to fork this repo and experiment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

Contributor License Agreement (CLA)

This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.microsoft.com.

When you submit a pull request, a CLA-bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.

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.