Post AutsRyGSwGOKCrCfOS by katt@ak.kazuma.family
(DIR) More posts by katt@ak.kazuma.family
(DIR) Post #AutqgNfL5vol8Ha5HU by foone@digipres.club
2025-06-07T21:39:27Z
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I wonder what'd happen if you replaced the oscillator of a 486 with a programmable one. Like, turbo already existed, but could you just smoothly ramp a 486 from 50mhz down to half a kHz?It'd be neat to see what breaks and when
(DIR) Post #AutqwEKlYeRUp8W2Bk by cinebox@masto.hackers.town
2025-06-07T21:41:51Z
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@foone setting where the clock only ticks when you press the turbo button
(DIR) Post #AutrAyIZSXllR0WBf6 by slaeshjag@bitbang.social
2025-06-07T21:44:54Z
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@foone it wasn't a 486, but I remember a forum post from way back in prehistory, when someone would downclock an IBM PC down and down until it stopped working. It did reach a few 100 kHz iirc
(DIR) Post #AutrKwDe2t29sgxyme by n_dimension@infosec.exchange
2025-06-07T21:46:45Z
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@foone ...immerse in mineral oil before attempting.
(DIR) Post #Auts4OyBzufq56PwZc by skaverat@skaverat.net
2025-06-07T21:54:51Z
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@foone need 250Hz? Just PWM the oscillator between 0Hz and 500Hz.The duty cylcle controlled by another oscillator, of course
(DIR) Post #AutsRyGSwGOKCrCfOS by katt@ak.kazuma.family
2025-06-07T21:59:38.263858Z
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@foone like with a knob sticking out the front of the case? that'd be quite funny
(DIR) Post #Autsie7L6BTYdysyiu by wonka@chaos.social
2025-06-07T22:02:13Z
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@foone is there any dynamic memory inside that would get flaky below a certain frequency?
(DIR) Post #AuttxhUCxJB7OFKC5A by h0m54r@mastodon.social
2025-06-07T22:16:00Z
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@foone istr Adrian Digitalbasement tried this, albeit with an XT rather than a 486 and in a narrower range https://youtu.be/dt1eSXpo1SA
(DIR) Post #Autyup1YyMgjfeNC7s by phloggen@expressional.social
2025-06-07T23:11:31Z
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@foone Been there, done that, used a HP8657A I got cheap of eBay, lots of fun.
(DIR) Post #Auu99OmLpk2K9pqajQ by foone@digipres.club
2025-06-08T01:06:18Z
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@raven667 oh yeah
(DIR) Post #Auvw6F0UnZ3btUXz9c by cinebox@masto.hackers.town
2025-06-08T21:49:29Z
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@foone also, having done literally this with an FPGA, you need really smooth frequency transitions to not screw everything up (probably the PLLs getting confused? Idrk)I had to rent a big expense analog signal generator and even then it would lock up if I spun the knob too fast