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34 lines
1.5 KiB
Markdown
34 lines
1.5 KiB
Markdown
# pdp7-unix
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## About
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pdp7-unix is a project to resurrect Unix on the PDP-7 from scans of the original assembly
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code done by [Norman Wilson](http://www.cs.toronto.edu/~norman/pers/index.html). The scans of PDP-7 Unix are in the [Unix Archive](http://www.tuhs.org/) at
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[http://www.tuhs.org/Archive/PDP-11/Distributions/research/McIlroy_v0/](http://www.tuhs.org/Archive/PDP-11/Distributions/research/McIlroy_v0/)
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as the files 0*.pdf.
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## Current Status
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Update early March 2016: We've written an assembler, most of a user-mode
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simulator and commented several source files. We now have these utilities
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running: cat, cp, chmod, chown, chrm and ls.
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Things to do: write a filesystem creation tool, write a shell, write the
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missing utilities, try to bring the system up on a PDP-7 system. We have
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a real PDP-7 and [SimH](http://simh.trailing-edge.com/) as target platforms.
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## Source Tree
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The code in the original scans are (c) Novell who own the rights to the Unix
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source code. Everything that didn't come from the scanned files is GPLv3.
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* /scans holds the unmodified OCR versions of the scanned files
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* /src/cmd holds the modified source code of the user-mode programs
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* /src/sys holds the modified source code of the kernel
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* /src/other holds PDP-7 source code which did not come from the scanned files
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* /tools holds the source for the tools written to assist the project
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* /misc holds miscellaneous notes and information
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* /pdp7parse holds a Java parser for pdp7 source code
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