A small tool to view real-world ActivityPub objects as JSON! Enter a URL
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to the server to view the underlying object.
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"litepub": "http://litepub.social/ns#",
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"id": "https://infosec.exchange/users/HoffmanLabs/statuses/114060140162047803",
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"content": "<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\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><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=\"tag\">#<span>digitalequipment</span></a> <a href=\"https://infosec.exchange/tags/retrocomputing\" class=\"mention hashtag\" rel=\"tag\">#<span>retrocomputing</span></a> <a href=\"https://infosec.exchange/tags/pdp11\" class=\"mention hashtag\" rel=\"tag\">#<span>pdp11</span></a> <a href=\"https://infosec.exchange/tags/corememory\" class=\"mention hashtag\" rel=\"tag\">#<span>corememory</span></a></p>",
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"en": "<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\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><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=\"tag\">#<span>digitalequipment</span></a> <a href=\"https://infosec.exchange/tags/retrocomputing\" class=\"mention hashtag\" rel=\"tag\">#<span>retrocomputing</span></a> <a href=\"https://infosec.exchange/tags/pdp11\" class=\"mention hashtag\" rel=\"tag\">#<span>pdp11</span></a> <a href=\"https://infosec.exchange/tags/corememory\" class=\"mention hashtag\" rel=\"tag\">#<span>corememory</span></a></p>"
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