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Warren Toomey 8f8cc64d10 I've added tad and sza to the a7out simulator, and I also added some

code to place command-line arguments into the simulated memory. I'm
trying to write my own version of cat so I can compare mine to the
real one. Right now there's a bug when simplecat has two arguments.
Zero and one arguments are OK! Saving so I have a backup before proceeding.

2016-02-26 20:56:31 +10:00

misc

I've got a few system calls working: open, close, write, exit along with the

2016-02-25 18:12:57 +10:00

scans

Remind people to put in the page numbers and filenames!

2016-02-26 17:35:58 +10:00

src/cmd

Hand-typed version of the cat source code with my own comments to

2016-02-25 06:56:04 +10:00

tools

I've added tad and sza to the a7out simulator, and I also added some

2016-02-26 20:56:31 +10:00

LICENSE

Initial commit

2016-02-24 07:56:18 +10:00

README.md

Document the notes/ dir.

2016-02-25 07:40:04 +10:00

README.md

pdp7-unix

This is a project to resurrect Unix on the PDP-7 from a scan of the original assembly code done by Norman Wilson.

Right now the scans are in the Unix Archive at http://www.tuhs.org/Archive/PDP-11/Distributions/research/McIlroy_v0/ as the files 0*.pdf. We now need to convert these to machine-readable assembly code, write tools such as an assembler, a filesystem creation tool, and write from scratch missing things like a shell, ls etc.

scans holds the unmodified OCR versions of the scanned files

src/cmd holds the modified source code of the user-mode programs

src/sys holds the modified source code of the kernel

tools holds the source for the tools written to assist the project

misc holds miscellaneous notes and information

Languages

Assembly 81.1%

Perl 13.5%

Limbo 2.3%

C 1.8%

Makefile 1.2%