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You can buy core memory kits [1] for adding core memory to an arduino. They only give 8x4 but you could get to "cordmp" with a five-bit encoding ;-) The vendor
by ocfnash 6y ago
You can buy core memory kits [1] for adding core memory to an arduino. They only give 8x4 but you could get to "cordmp" with a five-bit encoding ;-)
The vendor, with whom I have absolutely no affiliation except for exchanging a few emails a several years ago, based his kits on a project that I did with a friend a long time ago [2].
It was a fun project that had interesting analog and digital sides to it.
[1] https://www.tindie.com/products/kilpelaj/core-memory-shield-for-arduino/ https://www.tindie.com/products/kilpelaj/core-memory-shield-...
[2] https://corememoryshield.com/ https://corememoryshield.com/
- rnestler 6y agoOh very nice thanks :) It would feel a bit like cheating though to just buy a ready made kit ;) I wonder how they assemble the cores and the wires efficiently, because that was always the most painful part when working with the cores. Edit: Typos
- ocfnash 6y agoThreading the cores is indeed quite fiddly. I think back in the day, large numbers of seamstresses pivoted into manufacturing core memory!
- hazeii 6y agoIf I recall correctly, the weaving was often done in Malta as it was the only place where the carpet weavers had fingers nimble enough to do it. (edit) a bit of digging around turned up an article [0] showing women building core memory for the Apollo Guidance Computer. [0] https://www.amusingplanet.com/2020/02/that-time-when-computer-memory-was.html https://www.amusingplanet.com/2020/02/that-time-when-compute...
- EvanAnderson 6y agoThere's some really good core assembly footage in this old Sperry-Rand film: https://youtu.be/s39Dzei2Z2I?t=92 https://youtu.be/s39Dzei2Z2I?t=92