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Lars Brinkhoff

@larsbrinkhoff.bsky.social

Messages from an alternative universe where the PDP-10 is alive and well.

141 Followers  |  59 Following  |  156 Posts  |  Joined: 20.10.2023  |  2.3735

Latest posts by larsbrinkhoff.bsky.social on Bluesky

Jus sayin, @symbo1ics.bsky.social
www.reddit.com/r/oscillosco...

31.10.2025 07:19 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I know it isn't, but I harbor a secret fantasy that the BESM-6 was a Soviet clone of the PDP-6. It would have been a sweet alternative reality.

22.10.2025 06:47 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Marge Piercy's book Woman on the Edge of Time.  Corner lifted to show "PDP-10" on page 221.

Marge Piercy's book Woman on the Edge of Time. Corner lifted to show "PDP-10" on page 221.

This book has an important message!

15.10.2025 07:42 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

DEC introduced sixels first with the VT220, later with graphics terminals like the VT340. This was around 20 years after the LINC. Arguably sixels only became cool a few years ago when people rediscovered them and added support to terminal emulators.

14.10.2025 07:41 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Description of the LINC instruction DSC, display character.  It draws 2x6 points.

Description of the LINC instruction DSC, display character. It draws 2x6 points.

The LINC had sixels before they were cool.

13.10.2025 07:21 β€” πŸ‘ 5    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
Spacewar running on a LINC emulator.

Spacewar running on a LINC emulator.

Spacewar on the LINC was early and small.

06.10.2025 08:48 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

Leeloo, is that you?

30.09.2025 11:50 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
HAKMEM

#MIT AI memo 239 "HAKMEM" now comes with the original files from PDP-10 backup tapes.
dspace.mit.edu/handle/1721....

04.09.2025 06:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I wonder if the pie menu was put there by Don Hopkins? Probably.

02.09.2025 11:00 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Let me take this opportunity to express my admiration for your witty user name, g000001.

30.08.2025 08:57 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Preview
GitHub - MITDDC/eine-1975-1981: Source code and related files for the text editor EINE from 1975-1981 Source code and related files for the text editor EINE from 1975-1981 - MITDDC/eine-1975-1981

Code for EINE, the first Emacs clone, has appeared.
github.com/MITDDC/eine-...

30.08.2025 07:12 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 1

[x] I'm ready for the ARPANET.

29.08.2025 11:03 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Project MAC, I assume.

28.08.2025 08:16 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Which time-sharing operating systems can be run via emulation today? Β· Time Reshared

A list of 39 timesharing systems that are available now for running on emulators. timereshared.com/os-list/

24.08.2025 13:05 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Cover of the book PiDP-10 "a mainframe in my living room" by Andrew Barron.

Cover of the book PiDP-10 "a mainframe in my living room" by Andrew Barron.

A new book about the PiDP-10, and what you can do with it. www.qsl.net/zl3dw/PiDP-1...

24.08.2025 03:53 β€” πŸ‘ 7    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0

I gather in telecom, mainframe - or main distribution frame in full - is still in use meaning something like chassis.

19.08.2025 07:01 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

What have you been working on?

12.07.2025 15:18 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

It was a game engine for Space Travel.

11.07.2025 15:08 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

It ought to be spelled K ERNI NG.

09.07.2025 05:08 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Feel the relief of not having systemd around.

04.07.2025 05:10 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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...

01.07.2025 05:30 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
A missile approaching a UFO.

A missile approaching a UFO.

The game runs on PDP-8 emulators now.

30.06.2025 07:49 β€” πŸ‘ 24    πŸ” 1    πŸ’¬ 1    πŸ“Œ 3
Preview
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

28.06.2025 06:36 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

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.)

28.06.2025 06:34 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 1

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

27.06.2025 19:29 β€” πŸ‘ 8    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
Archiving DECtapes – INTERIM COMPUTER MUSEUM

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

27.06.2025 17:25 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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.

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...

27.06.2025 10:34 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

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

27.06.2025 08:06 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
ICM (@icm@mastodon.sdf.org) Attached: 1 video 1971 β€œfreeway” 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...

27.06.2025 06:56 β€” πŸ‘ 8    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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.

27.06.2025 06:56 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

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