We hook up two Soviet era ferrite core memory planes obtained on eBay. And they still work! The 4k core plane is likely from a Saratov-2 core stack: https://rusue.com/cemetery-of-soviet-computers/ The 1k plane is likely from an M-4 memory stack, see: http://www.mirebs.com/fozu/ru/_mod_ru.html This would have been used in several military computers says Ralph Mirebs, the author of the web site. Full schematic of the setup I use in this video: https://www.curiousmarc.com/computing/core-memory Previous video explaining core memory: https://www.youtube.com/watch?v=AwsInQLmjXc Our sponsor for PCBs: https://www.pcbway.com/ Support the team on Patreon: https://www.patreon.com/curiousmarc Buy shirts on Teespring: https://teespring.com/stores/curiousmarcs-store Learn more on the companion site: https://www.curiousmarc.com/ Contact info: null