3 ms·
would this even work? my understanding of rope memory was that the value depended partially on the strength of magnets in a certain position in a copper rope.
by dmead 10y ago
would this even work? my understanding of rope memory was that the value depended partially on the strength of magnets in a certain position in a copper rope.
what happens when the magnet becomes deplolarized? isn't the only way to ensure the bits he's got out are correct to actually inspect the copper weaves? for all we know they were tossed in the trash because they were defective
- Frenchgeek 10y ago>what happens when the magnet becomes deplolarized? I guess then you try the same thing floppy disk rescueing programs did : keep attempting to read it until you have enough data to make a stastistically significant bet. It should work pretty well since you get an analog value encoding a digital one to start with.
- dmead 10y agoI feel like there's a really good answer to this that doesn't involve taking the thing apart, but I'm no EE.
- rzzzt 10y agoMy guess is that these are ROMs and the weaving pattern determines its contents. In the second video, there's an excerpt from how the modules were made in the factory, and while the address wire is weaved systematically through all cores by two people, the programming part was done with the help of an automatic guiding arm: https://youtu.be/-BlivdwXRZU?t=57s https://youtu.be/-BlivdwXRZU?t=57s