10 minutes of optimistically lamenting on a silly purchase VLOG 178

No worries. Early days for me. Good start but could do with a storage scope to see what's happening! 12 other things prioritised too. You'll understand! The delay idea is brilliant. Works really creatively with the limitations. Was even thinking how low passing the wet signal purely for musicality also means yer Nyquist comes down, so sample rate can drop and give you a longer delay time... I'll send over some notes 👍

hahaha i will not give in too easy :D :D itll come to life soon ha

Look Mum No Computer

very interesting stuff mitch! how is yours going??? how far are you in haha sounds cool!!!would be good to swap notes and thanks for thw awesome links! i printed out the pdp 8 i didnt think of that to be honest i would have thought it would have been slightly sdifferent but the pinout does look exactly like what i have!! madness thanks a lot!

Look Mum No Computer

Seems it's from a Seratov-2, Soviet PDP-8 clone. Maybe you'll have some luck with these schematics https://ia802907.us.archive.org/21/items/bitsavers_decpdp8pdpcsJun70_3007115/PDP-8_Memory_Schematics_Jun70_text.pdf

When this thing will end up on a display shelf, I suggest to label it as "Soviet macro SD card" ;)

Dixbit

This is so awesome! I’m (slowly) working on a similar thing, weaving my own (smaller!) core planes from scratch. You’re right, it is a really silly project! But thats why its fun. Hopefully we’ll be able to help each other on the way. My idea is to use a single plane as a drum trigger sequencer then stack cores to output parallel binary to a DAC for pitch CV. Because it’s RAM you can address it in fun ways, unlike a linear sequencer. You have so many bits and planes though I think a LinnDrum style sampler *could* be possible! I’m not a computer guy so a lot of this is new to me. The trickiest bit in my estimation is the intricate timing of the logic circuits. Core memory is weird and there’s a loads of different ways to do it - 3 wire/4wire etc. You’ll have to figure out which way your stack was designed. I really hope all the wires are intact because finding and fixing one would be a nightmare. I see everyone’s suggested CuriousMarc, his videos are great. There’s quite a bit of great NASA/MIT documentation from Apollo. The address selection switching diagrams here may give you some clues while reverse engineering that diode array! https://www.ibiblio.org/apollo/Documents/agcis_4_erasable.pdf This guy made an Arduino core memory shield and shared the schematic. Pretty interesting to see how he made it work with modern components. https://jussikilpelainen.kapsi.fi/wordpress/?p=213 This also - http://madrona.ca/e/coremem/index.html Real excited to see if you can get this working!