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#pdp8

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StarPeak<p><a href="https://chaos.social/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroComputing</span></a> Meetup <span class="h-card" translate="no"><a href="https://chaos.social/@cbase" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>cbase</span></a></span><br>Freitag, 04.04. ab 19 Uhr<br>in der c-base, Rungestraße 20, 10179 Berlin</p><p>Offener <a href="https://chaos.social/tags/VintageComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>VintageComputing</span></a> Stammtisch</p><p>Bei einem Getränk reden wir über Themen von <a href="https://chaos.social/tags/Zuse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Zuse</span></a> bis <a href="https://chaos.social/tags/Amiga" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Amiga</span></a>, egal ob <a href="https://chaos.social/tags/Atari" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Atari</span></a>, <a href="https://chaos.social/tags/Commodore" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Commodore</span></a>, <a href="https://chaos.social/tags/Apple" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Apple</span></a> oder <a href="https://chaos.social/tags/PDP8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PDP8</span></a>-<a href="https://chaos.social/tags/PDP11" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PDP11</span></a> - Hauptsache alte Rechner</p>
Wolfgang Stiefmaier pdp-8/ɣ. Nein, kein verspäteter Aprilscherz. Dahinter verbirgt sich eine emulierte PDP-8, gesehen am 24C3 (2007). <a href="https://pixelfed.de/discover/tags/onepicaday?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#onepicaday</a> <a href="https://pixelfed.de/discover/tags/vintagecomputing?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#vintagecomputing</a> <a href="https://pixelfed.de/discover/tags/retrocomputing?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#retrocomputing</a> <a href="https://pixelfed.de/discover/tags/dec?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#dec</a> <a href="https://pixelfed.de/discover/tags/pdp8?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#pdp8</a> <a href="https://pixelfed.de/discover/tags/24c3?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#24c3</a>
pflegende<p><span class="h-card" translate="no"><a href="https://chaos.social/@krautspace" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>krautspace</span></a></span> </p><p>auch beim </p><p>Lounge-Gespräch am Freitag im <span class="h-card" translate="no"><a href="https://chaos.social/@bytespeicher" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>bytespeicher</span></a></span> kamen neben </p><p><a href="https://mastodon.social/tags/pdp8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pdp8</span></a> (Jubilar = 60💐 !, <a href="https://kurzlinks.de/pdp8_ls8" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">kurzlinks.de/pdp8_ls8</span><span class="invisible"></span></a> )<br>LC80 (Jubel!)<br>RISC on Gigatron (Jubiläum folgt)</p><p>wieder Thema <a href="https://mastodon.social/tags/Meshtastic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Meshtastic</span></a> <a href="https://mastodon.social/tags/LoRa" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LoRa</span></a> <a href="https://mastodon.social/tags/WAN" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>WAN</span></a> nicht zu kurz</p><p>Vielen Dank f.d. Besuch aus J!</p>
iotar<p>Everything else has FTPed over to the Minitel/PiDP8i evening stereo without any trouble apart from Floral Shoppe. A problem with the Japanese characters? I've moved a tonne of City Pop over without any issues.</p><p>Finally moved it physically with a USB drive. We might have expected this from Vektroid.</p><p><a href="https://mastodon.online/tags/vaporwave" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vaporwave</span></a> <a href="https://mastodon.online/tags/MacintoshPlus" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MacintoshPlus</span></a> <a href="https://mastodon.online/tags/FloralShoppe" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FloralShoppe</span></a> <a href="https://mastodon.online/tags/vektroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vektroid</span></a> <a href="https://mastodon.online/tags/minitel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>minitel</span></a> <a href="https://mastodon.online/tags/pidp8i" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pidp8i</span></a> <a href="https://mastodon.online/tags/pdp8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pdp8</span></a></p>
iotar<p>Makes no difference to how it looks, but I upgraded the microSD that the PiDP8/i runs on from 32GB to 256GB, which gives it some decent storage capacity in its main role as the evening stereo system.</p><p>FTPing music from my main desk PC seems to work pretty well. It's almost like a feasible solution.<br><a href="https://mastodon.online/tags/minitel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>minitel</span></a> <a href="https://mastodon.online/tags/pdp8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pdp8</span></a> <a href="https://mastodon.online/tags/pidp8i" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pidp8i</span></a> <a href="https://mastodon.online/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputing</span></a> <a href="https://mastodon.online/tags/MusicForLeisure" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MusicForLeisure</span></a></p>
iotar<p>Okay, the Minitel 1 is connecting to the PiDP8-i as a terminal. That wasn't something I was expecting to figure out before lunchtime.<br><a href="https://mastodon.online/tags/pdp8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pdp8</span></a> <a href="https://mastodon.online/tags/pidp8i" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pidp8i</span></a> <a href="https://mastodon.online/tags/raspberrypi" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>raspberrypi</span></a> <a href="https://mastodon.online/tags/minitel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>minitel</span></a> <a href="https://mastodon.online/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputing</span></a></p>
Space Hobo<p>I have a slightly absurd <a href="https://teh.entar.net/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroComputing</span></a> project for the <a href="https://teh.entar.net/tags/PDP8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PDP8</span></a> that I find kind of fun because it forces me to find new and novel data structures and algorithms for things. You can't Just Use A Hash Table on a system with 12-bit values, 8k of core, and no multiply. It's hilarious finding algorithms that say "this structure is good for space-constrained systems, because the main table only takes up 64kB of RAM" and realising how over spec that is.</p><p>So I was digging through disco-era algorithms and data representations, mostly. Lots of neat stuff, some overlooked gems (I have a cool variable-length four-bit text representation that I found via wikibooks). But text processing is still pretty memory-hungry, with some huge tree structures necessary for the heavy lifting, so I'm mostly building abbreviation tables and such via python scripts.</p><p>But then I found LCP arrays, which I had missed for some reason. I mean, not "some reason" but that they were actually published after my university algorithms books were written! They're not like SUPER new, but most of the work on them was done by bioinformatics nerds in the early 2000s, so I didn't really notice them until now.</p><p>They're super neat! You just create a suffix array by sorting indices into your string lexicographically (from index to the end), then you go down that in order and compare each substring to the one before it and record the length of the largest common prefix in that. Bingo! Two arrays the size of your working string, and you can do all sorts of queries on them in linear time to find valuable repeated sequences for compression tools like LZ77 or an abbreviation tool.</p><p>It really *feels* like a 1970s algorithm, but back then they were all doing this in like O(N*log(N)) via dynamic programming techniques. I may still bubble sort just to save code size...</p>
StarPeak<p><a href="https://chaos.social/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroComputing</span></a> Meetup <span class="h-card" translate="no"><a href="https://chaos.social/@cbase" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>cbase</span></a></span><br>Freitag, 06.12. ab 19 Uhr<br>in der c-base, Rungestraße 20, 10179 Berlin</p><p>Offener <a href="https://chaos.social/tags/VintageComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>VintageComputing</span></a> Stammtisch</p><p>Bei einem Getränk reden wir über Themen von <a href="https://chaos.social/tags/Zuse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Zuse</span></a> bis <a href="https://chaos.social/tags/Amiga" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Amiga</span></a>, egal ob <a href="https://chaos.social/tags/Atari" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Atari</span></a>, <a href="https://chaos.social/tags/Commodore" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Commodore</span></a>, <a href="https://chaos.social/tags/Apple" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Apple</span></a> oder <a href="https://chaos.social/tags/PDP8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PDP8</span></a>-<a href="https://chaos.social/tags/PDP11" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PDP11</span></a> - Hauptsache alte Rechner</p>
Space Hobo<p>I've been tinkering with ways to squeeze slightly more modern <a href="https://teh.entar.net/tags/InteractiveFiction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>InteractiveFiction</span></a> onto a <a href="https://teh.entar.net/tags/PDP8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PDP8</span></a> over the past year or two. I was playing with the dictionary from the <a href="https://teh.entar.net/tags/Hibernated" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Hibernated</span></a> 1 Director's Cut, which has about 650 entries, and managed to come up with a system that distinguishes all but 55 of those uniquely, and those 55 are lumped into 16 buckets. </p><p> Not a bad collision rate, especially given the side-effects of my scheme are less surprising to human players than some other approaches!</p><p>The only drawback is that it can't distinguish the diagonal directions well, but with careful command choices and some workarounds in special cases we can avoid this and still have a fairly plush-feeling vocabulary. Now I just need to work on the rest of it to see if it was worth the brainwave!</p>
Minty<p><a href="https://mastodon.social/tags/vintage" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vintage</span></a> <a href="https://mastodon.social/tags/computer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>computer</span></a> <a href="https://mastodon.social/tags/DEC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DEC</span></a> <a href="https://mastodon.social/tags/PDP8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PDP8</span></a> <a href="https://mastodon.social/tags/advertisement" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>advertisement</span></a> </p><p>The PDP-8 is a 12-bit minicomputer that was produced by Digital Equipment Corporation (DEC). It was the first commercially successful minicomputer, with over 50,000 units being sold over the model's lifetime</p><p>Release date - March 22, 1965</p><p>Introductory price - $18,500, equivalent to about $150,100 in 2019</p>
Stefan Wolfrum :mastodon:<p><span class="h-card" translate="no"><a href="https://oldbytes.space/@kenshirriff" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>kenshirriff</span></a></span> <span class="h-card" translate="no"><a href="https://social.tchncs.de/@rzbrk" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>rzbrk</span></a></span> Ohhh, thanks so much for answering, Master Ken! Made my day! 🤩🙏 So, the PDP-8/e is still there in the exhibition? Cool! Wouldn‘t that be a nice project with <a href="https://mastodon.social/tags/CuriousMarc" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CuriousMarc</span></a>, making it run again? 😉 <a href="https://mastodon.social/tags/pdp8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pdp8</span></a> <a href="https://mastodon.social/tags/pdp8e" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pdp8e</span></a></p>
Stefan Wolfrum :mastodon:<p><span class="h-card" translate="no"><a href="https://social.tchncs.de/@rzbrk" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>rzbrk</span></a></span> Look what I found in my photo library – photos of a <a href="https://mastodon.social/tags/pdp8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pdp8</span></a>/e and a <a href="https://mastodon.social/tags/pdp11" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pdp11</span></a>/20 I took in 2013 at the <a href="https://mastodon.social/tags/ComputerHistoryMuseum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ComputerHistoryMuseum</span></a> in Palo Alto! 😍<br>I wonder if <span class="h-card" translate="no"><a href="https://oldbytes.space/@kenshirriff" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>kenshirriff</span></a></span> could tell us more about these, if they’re still there today and if they actually work?!</p>
Jan<p><span class="h-card" translate="no"><a href="https://mastodon.social/@metawops" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>metawops</span></a></span> <br>The <a href="https://social.tchncs.de/tags/pdp8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pdp8</span></a> was discontinued in 1979. We are both "late to the party"! 😂 </p><p>I am currently very busy with RL things. But it would be awesome to exchange and to explore this beautiful machine together!</p><p>And I also plan to visit the Computer Museum in Stuttgart and to see a "real" PDP-8 at least once in my life:<br><a href="https://www.f05.uni-stuttgart.de/informatik/fachbereich/computermuseum/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">f05.uni-stuttgart.de/informati</span><span class="invisible">k/fachbereich/computermuseum/</span></a></p>
Stefan Wolfrum :mastodon:<p><span class="h-card" translate="no"><a href="https://social.tchncs.de/@rzbrk" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>rzbrk</span></a></span> Yeah! 🤩 I‘d say „welcome to the club“ but I was late to the party and built my own <a href="https://mastodon.social/tags/PiDP8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PiDP8</span></a> kit just a few weeks ago. Love programming it via the front switches in octal machine code! 🤓 <br>The 3D printed stand (designed by Dan Novak) can be downloaded from my account at <a href="https://mastodon.social/tags/MakerWorld" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MakerWorld</span></a> here 👉 <a href="https://makerworld.com/en/models/561418#profileId-480815" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">makerworld.com/en/models/56141</span><span class="invisible">8#profileId-480815</span></a><br><a href="https://mastodon.social/tags/3dprinting" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>3dprinting</span></a> <a href="https://mastodon.social/tags/pdp8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pdp8</span></a></p>
Minty<p><a href="https://mastodon.social/tags/computer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>computer</span></a> <a href="https://mastodon.social/tags/DEC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DEC</span></a> <a href="https://mastodon.social/tags/DigitalEquipmentCorporation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DigitalEquipmentCorporation</span></a> <a href="https://mastodon.social/tags/PDP8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PDP8</span></a> <a href="https://mastodon.social/tags/vintage" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vintage</span></a> <a href="https://mastodon.social/tags/SpaceWar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceWar</span></a> </p><p>Digital Equipment Corporation PDP-8/I running Space War by David Gesswein at VCF East XVII</p>