[TUHS] UNIX Program Generic Issue 3 Successfully Resurrected

[Thalia Archibald via TUHS]

> On Apr 24, 2026, at 21:54, segaloco wrote:
> 
> I have exciting news!  Thanks to the efforts of Al Kossow, Thalia
> Archibald, and surely others, UNIX Program Generic Issue 3 as issued by
> the UNIX Support Group is not only preserved but up and running:
> 
> https://www.tuhs.org/cgi-bin/utree.pl?file=USG_PG3
> https://www.tuhs.org/Archive/Distributions/USDL/Coultier_USG_PG3/


This distribution is from 1977-04-12 and sits between UNIX V6 and PWB/UNIX 1.0.

Included with the distribution, I’ve written fully automated scripts to install the
system and run it with SIMH (https://github.com/open-simh/simh).

To install the root file system and copy the source onto a disk:
    $ pdp11 install.ini

To boot from that disk:
    $ pdp11 boot.ini

I hope to later add similar SIMH scripts to other distributions.

Beware that metadata is not preserved in the current tar. Also, my install.ini
does not extract the full set of files in src.tap to /usr/source, since it’s a
multi-part tp archive using an extended version of tp. Fixing these properly
will take some more work, so we’re releasing what we have for now.

Enjoy!
Thalia