Stephen Hoffman<p>MUDs and the ability to reload new server without dropping connections (a “hotboot”)…</p><p><a href="https://boston.conman.org/2025/02/11.2" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">boston.conman.org/2025/02/11.2</span><span class="invisible"></span></a></p><p>…reminded me of an old RSX-11M application from an aeon ago, running part of a state government. </p><p>The app was too big for the PDP-11 (a common problem, as 32KW wasn't all that much even then), so the app removed the operating system from the computer, and ran, well, standalone.</p><p>Yes, you could do that back then. </p><p>That all worked swimmingly until somebody pressed ^C control-C on their terminal session, and the terminal driver then trapped into, well, nothingness.</p><p>Since the app code was too big for the PDP-11 it was running on, that smaller PDP-11 was shut down, the bigger local PDP-11 was switched over and re-booted and the app code loaded, and the bigger PDP-11 was then powered down.</p><p>The operator then pulled the core memory out of the bigger PDP-11, walked it over to the smaller PDP-11 and plugged it into the backplane, toggled in the address of the app's main loop onto the front panel switches, and toggled “go”, and off the smaller PDP-11 went running its too-big app.</p><p>Yeah, you could do a simple form of app checkpoint-restart with core memory, given core was persistent. And yeah, a bigger PDP-11 would have been helpful.</p><p>(Yes, SC was a creative administrator of those PDP-11 boxes. Swapping core never would have occurred to me.)</p><p><a href="https://infosec.exchange/tags/digitalequipment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>digitalequipment</span></a> <a href="https://infosec.exchange/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputing</span></a> <a href="https://infosec.exchange/tags/pdp11" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pdp11</span></a> <a href="https://infosec.exchange/tags/corememory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>corememory</span></a></p>
Recent searches
No recent searches
Search options
Only available when logged in.
shakedown.social is one of the many independent Mastodon servers you can use to participate in the fediverse.
A community for live music fans with roots in the jam scene. Shakedown Social is run by a team of volunteers (led by @clifff and @sethadam1) and funded by donations.
Administered by:
Server stats:
290active users
shakedown.social: About · Status · Profiles directory · Privacy policy
Mastodon: About · Get the app · Keyboard shortcuts · View source code · v4.3.4
#corememory
0 posts · 0 participants · 0 posts today
Kevin Karhan :verified:<p><span class="h-card" translate="no"><a href="https://computerfairi.es/@mavica_again" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>mavica_again</span></a></span> <span class="h-card" translate="no"><a href="https://wandering.shop/@cstross" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>cstross</span></a></span> <span class="h-card" translate="no"><a href="https://oldbytes.space/@NF6X" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>NF6X</span></a></span> also lets be clear, <span class="h-card" translate="no"><a href="https://bitbang.social/@NanoRaptor" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>NanoRaptor</span></a></span> does <em>"Premium" <a href="https://infosec.space/tags/Shitpost" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Shitpost</span></a>|s</em> or rather <em>"<a href="https://infosec.space/tags/NextLevel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NextLevel</span></a> <a href="https://infosec.space/tags/Memes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Memes</span></a>"</em> to the point that I'd not be surprised if she makes a <a href="https://infosec.space/tags/NeoFloppy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NeoFloppy</span></a> / <a href="https://infosec.space/tags/Jaz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Jaz</span></a> / <a href="https://infosec.space/tags/Zip" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Zip</span></a> mashup and showcases a nonexistant <em>"vintage" portable SSD</em> with like old <a href="https://infosec.space/tags/ROM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ROM</span></a> chips or <a href="https://infosec.space/tags/RAM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RAM</span></a> chips...</p><ul><li>I mean, the only reason <a href="https://infosec.space/tags/ODD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ODD</span></a>'s and <a href="https://infosec.space/tags/HDD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HDD</span></a>'s ever got built is because <a href="https://infosec.space/tags/CoreMemory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CoreMemory</span></a> and other storage couldn't scale up faster.</li></ul><p>But <a href="https://infosec.space/tags/WhatIf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>WhatIf</span></a> it did?</p><ul><li><em>plays <a href="https://www.youtube.com/watch?v=AsxsQkKnmBI" rel="nofollow noopener noreferrer" target="_blank">Vsauce music</a></em></li></ul>
IT News<p>A Nibble Of Core Memory, In An SAO - Core memory, magnetised memory using tiny magnetic rings suspended on a grid of wi... - <a href="https://hackaday.com/2024/09/03/a-nibble-of-core-memory-in-an-sao/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2024/09/03/a-nibb</span><span class="invisible">le-of-core-memory-in-an-sao/</span></a> <a href="https://schleuss.online/tags/computerhacks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>computerhacks</span></a> <a href="https://schleuss.online/tags/magneticcore" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>magneticcore</span></a> <a href="https://schleuss.online/tags/corememory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>corememory</span></a> <a href="https://schleuss.online/tags/nibble" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nibble</span></a></p>
IT News<p>Inside a Mystery Aerospace Computer with [Ken Shirriff] - When life hands you a mysterious bit of vintage avionics, your best bet to identif... - <a href="https://hackaday.com/2024/06/01/inside-a-mystery-aerospace-computer-with-ken-shirriff/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2024/06/01/inside</span><span class="invisible">-a-mystery-aerospace-computer-with-ken-shirriff/</span></a> <a href="https://schleuss.online/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputing</span></a> <a href="https://schleuss.online/tags/corememory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>corememory</span></a> <a href="https://schleuss.online/tags/navigation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>navigation</span></a> <a href="https://schleuss.online/tags/signetics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>signetics</span></a> <a href="https://schleuss.online/tags/avionics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>avionics</span></a> <a href="https://schleuss.online/tags/computer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>computer</span></a> <a href="https://schleuss.online/tags/flight" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>flight</span></a></p>
IT News<p>What’s a Transfluxor? - In the 1967 movie The Graduate, a wise older man gives some advice to the title ch... - <a href="https://hackaday.com/2024/03/03/whats-a-transfluxor/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2024/03/03/whats-</span><span class="invisible">a-transfluxor/</span></a> <a href="https://schleuss.online/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputing</span></a> <a href="https://schleuss.online/tags/transfluxor" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>transfluxor</span></a> <a href="https://schleuss.online/tags/corememory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>corememory</span></a> <a href="https://schleuss.online/tags/parts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>parts</span></a> <a href="https://schleuss.online/tags/arma" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>arma</span></a></p>
myrmepropagandist<p>Here is a link (cued to the time where it starts) of the best and most clear explanation of how core memory works. Reading & writing a bit has many steps! </p><p>Now I want to know how modern memory works with a similar level of detail. </p><p>I always felt there was something poetic about how one must destroy this kind of memory in order to read it. Observation is never passive... to observe a system is to change it... <a href="https://sauropods.win/tags/computer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>computer</span></a> <a href="https://sauropods.win/tags/memory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>memory</span></a> <a href="https://sauropods.win/tags/history" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>history</span></a> <a href="https://sauropods.win/tags/coreMemory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>coreMemory</span></a> <a href="https://sauropods.win/tags/cs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cs</span></a></p><p><a href="https://youtu.be/AwsInQLmjXc?list=TLPQMTcxMjIwMjPAV2NFeK1Otg&t=160" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">youtu.be/AwsInQLmjXc?list=TLPQ</span><span class="invisible">MTcxMjIwMjPAV2NFeK1Otg&t=160</span></a></p>
IT News<p>Saving Apollo by Decoding Core Rope - One of our favorite retro hardware enthusiasts, [CuriousMarc], is back with the ou... - <a href="https://hackaday.com/2023/11/04/saving-apollo-by-decoding-core-rope/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2023/11/04/saving</span><span class="invisible">-apollo-by-decoding-core-rope/</span></a> <a href="https://schleuss.online/tags/apolloguidancecomputer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>apolloguidancecomputer</span></a> <a href="https://schleuss.online/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputing</span></a> <a href="https://schleuss.online/tags/coreropememory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>coreropememory</span></a> <a href="https://schleuss.online/tags/corememory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>corememory</span></a> <a href="https://schleuss.online/tags/history" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>history</span></a> <a href="https://schleuss.online/tags/agc" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>agc</span></a></p>
IT News<p>GLASNOST is a Computer That Makes Transparency A Priority - We live in a world where most of us take the transistor for granted. Within arm’s ... - <a href="https://hackaday.com/2023/07/17/glasnost-is-a-computer-that-makes-transparency-a-priority/" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2023/07/17/glasno</span><span class="invisible">st-is-a-computer-that-makes-transparency-a-priority/</span></a> <a href="https://schleuss.online/tags/computerhacks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>computerhacks</span></a> <a href="https://schleuss.online/tags/corememory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>corememory</span></a> <a href="https://schleuss.online/tags/vacuumtube" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vacuumtube</span></a> <a href="https://schleuss.online/tags/computer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>computer</span></a> <a href="https://schleuss.online/tags/glasnost" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>glasnost</span></a> <a href="https://schleuss.online/tags/soviet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>soviet</span></a> <a href="https://schleuss.online/tags/logic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>logic</span></a> <a href="https://schleuss.online/tags/gate" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>gate</span></a></p>
IT News<p>Supercon 2022: Andy Geppert is Bringing Core Memory Back - Many Hackaday readers will be familiar with the term “core memory”, likely thanks ... - <a href="https://hackaday.com/2023/05/18/supercon-2022-andy-geppert-is-bringing-core-memory-back/" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2023/05/18/superc</span><span class="invisible">on-2022-andy-geppert-is-bringing-core-memory-back/</span></a> <a href="https://schleuss.online/tags/2022hackadaysupercon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2022hackadaysupercon</span></a> <a href="https://schleuss.online/tags/magnetic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>magnetic</span></a>-corememory <a href="https://schleuss.online/tags/hackadaycolumns" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hackadaycolumns</span></a> <a href="https://schleuss.online/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputing</span></a> <a href="https://schleuss.online/tags/touchscreen" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>touchscreen</span></a> <a href="https://schleuss.online/tags/corememory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>corememory</span></a> <a href="https://schleuss.online/tags/ledarray" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ledarray</span></a> <a href="https://schleuss.online/tags/core64" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>core64</span></a> <a href="https://schleuss.online/tags/cons" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cons</span></a></p>
IT News<p>VCF East 2023: Andy Geppert Talks Core Memory - Do you know core memory? Our prehistoric predecessors would store data in the magn... - <a href="https://hackaday.com/2023/04/20/vcf-east-2023-andy-geppert-talks-core-memory/" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2023/04/20/vcf-ea</span><span class="invisible">st-2023-andy-geppert-talks-core-memory/</span></a> <a href="https://schleuss.online/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputing</span></a> <a href="https://schleuss.online/tags/vcfeast2023" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vcfeast2023</span></a> <a href="https://schleuss.online/tags/interviews" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>interviews</span></a> <a href="https://schleuss.online/tags/corememory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>corememory</span></a></p>
ExploreLive feeds
Mastodon is the best way to keep up with what's happening.
Follow anyone across the fediverse and see it all in chronological order. No algorithms, ads, or clickbait in sight.
Create accountLoginDrag & drop to upload