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GitHub – DOS 1.0: Transcription of Tim Paterson's DOS Printouts

Hacker News · Apr 29, 2026, 11:25 AM

Key takeaways

  • Tim Paterson's DOS listings, containing source code of 86-DOS 1.00 kernel, various PC-DOS 1.00 pre-release kernels and utilities, and the Microsoft BASIC-86 Compiler runtime library.
  • The DOS-related portions have been transcribed and turned into compilable source code.
  • The original scans, in PDF and PNG formats, are available at https://archive.org/details/paterson_listings.

Tim Paterson's DOS listings, containing source code of 86-DOS 1.00 kernel, various PC-DOS 1.00 pre-release kernels and utilities, and the Microsoft BASIC-86 Compiler runtime library.

The DOS-related portions have been transcribed and turned into compilable source code.

1_transcription (download) - transcription of the listings, essentially the raw printer output 2_printed_files (download) - the original files that were printed, extracted from the raw printer output above 3_source_code (download) - compilable source code extracted from the printed files above If you just want to browse the source code or compile/assemble it, choose 3_source_code. The original scans, in PDF and PNG formats, are available at https://archive.org/details/paterson_listings.

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