Lars Brinkhoff

What have you been working on?

It was a game engine for Space Travel.

It ought to be spelled K ERNI NG.

Feel the relief of not having systemd around.

It was Devin Monnens. He's also in touch with Len Berger, the original programmer, and will interview him soon.

I have opened a pull request for Open SIMH to add support for the display. The game code is also there, in the PDP8/test directory. github.com/open-simh/si...

A missile approaching a UFO.

The game runs on PDP-8 emulators now.

GitHub - PDP-5/ICBM: DECUS 5-277: ICBM (1970) - game by Len Berger DECUS 5-277: ICBM (1970) - game by Len Berger. Contribute to PDP-5/ICBM development by creating an account on GitHub.

Thanks for the offer! It turns out someone already transcribed it. I put it here: github.com/PDP-5/ICBM

Not quite. The IMLAC PDS-1 is a single-user minicomputer. A workstation predecessor before the term workstation was coined. (...or was it? I have seen it used with Englebart's NLS.)

A game for the PDP-5. Help me type it. svn.so-much-stuff.com/svn/trunk/pd...

Hundreds of DECtapes being processed. icm.museum/blog/?p=241

Original CompuServe computer room, 1969. DEC PDP-10 (KA), MA-10 memory cabinets (16K 36 bit words each), RD-10 drum (for swapping), RP02 disk drives, oodles of DECtapes for offline customer storage.

Original CompuServe computer room, 1969. DEC PDP-10 (KA), MA-10 memory cabinets (16K 36 bit words each), RD-10 drum (for swapping), RP02 disk drives, oodles of DECtapes for offline customer storage.
x.com/hkb73/status...

It was really due to Hans Hübner finding a set of floppies and imaging them.

ICM (@icm@mastodon.sdf.org) Attached: 1 video 1971 “freeway” game written at University of Washington for the IMLAC PDS-1 Did it inspire Frogger? #retrogaming #vintagecomputing #retrocomputing

Here it is running on a real IMLAC PDS-1D. mastodon.sdf.org/@icm/1147460...

The display code was written for the earliest "Alpha machine" model of the IMLAC PDS-1, for which no documentation or other code survives. Zachary Harper recently figured out how it works from reading the listing, and ported it to the standard "Graphics machine" model.

YouTube video by Lars Brinkhoff Imlac PDS-1 game: FREEWAY CROSSING PROGRAM (1971)

Irrgang retained a listing for the game, which has been transcribed. Here is the game running on an emulator. www.youtube.com/watch?v=fj6-...

The Freeway Crossing game was written by Michael Irrgang in 1971, for the IMLAC PDS-1 computer. He made it for Earl Hunt, who was going to use it to measure reaction times in a psychology study. The game play is similar to the arcade game "Frogger" from 1981.

Professor Farnsworth saying GoodNeWS everyone!

After fighting with QEMU, I finally managed to compile the sources of UniPress Emacs 2.20.
It's really cool to see it working, but I can't type yet due to the keyboard issue that breaks nearly all the NeWS applications.

Thanks for working on it! Preserved software is nice, but it's not doing any good if it's not running.

YouTube video by Tridora-CPU Playing a Pascal Version of Rogue on the Tridora-CPU

(hat tip @larsbrinkhoff.bsky.social )

Someone ported TOPS-20 Rogue to FreePascal.
www.youtube.com/watch?v=6yK7...

h0a h0a

GitHub - larsbrinkhoff/emacs-history: Historical Emacs Software Preservation Historical Emacs Software Preservation. Contribute to larsbrinkhoff/emacs-history development by creating an account on GitHub.

Find the rest of the collection here: github.com/larsbrinkhof...

Floppy disk with UniPress Emacs V2.20.

New addition to the Emacs collection: UniPress Emacs V2.20 from 1989.

Rev up the turtles!

YouTube video by RetroBytes I have a PDP-10 Mainframe in my Living room

I've spent the last few months putting this one together, it's been the most fascinating of rabbit holes. The PDP-10 may not be the best know of mainframes, but it's been hugely influential on the world of computing we have now. youtu.be/ybO6bPcRmlY

March 22 marks the 60th anniversary of the introduction(*) of the Digital Equipment Corporation PDP-8, which more or less introduced the "minicomputer" as a new category of computer. It cost a mere $18,000 and fit on a desk, and while it was a small, simple computer, it became extremely popular.

Charles Corderman’s computer This is an atypical post, being chiefly about the history of a rather obscure computer that was built in 1960 out of repurposed PDP parts, but it needs to be written somewhere lest it be forgotten.…

New info about the PDP-3/CASINO just dropped. cp4space.hatsya.com/2025/03/18/c...

RFC 301 says the new host BBN-1D would come online "shortly subsequent to this move", which was to take place March 4, 1971.

You could say it was out of scope.

The PDP-1 and Arpanet | Details | Hackaday.io <p>We spent the last four days investigating how we can bring our PiDP-1 on Arpanet. Yes, really. Because (1) there is some major history there, and (2) there&apos;s a major new project from Lars Brin...

A piece about the PDP-1 and the Arpanet, written by @oscar-ceds.bsky.social. hackaday.io/project/2025...