Nostalgia – it ain’t what it used to and find a new eeprom to fit in a Commodore PET or a Rockwell AIM65.”Ģ716 (2k x8) and newer all conformed (mostly) to jedec standard.
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Please, show us how to dig those old DTL and RTL logic cards out of landfills and connect them up. And vacuum tubes! So much technology slated for the landfill waits for resurrection. I hope that someone will post an article showing us how to wind core memory and access it with an arduino! 8 x 8 should be easy enough – you could store simple passwords in a way that would resist gamma rays.Īnd if we could obtain enough mercury, we could build a mercury delay line memory device. However, kudos to the guys out there making it fly. The days of blow and go are past us – and I don’t miss them very much. I know the feeling, but it might be time to move on.
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I cannot tell you how hard it is to truck my little mistakes down to the dentist to clear them using a goodly dose of X-rays, and then have to wait for hours while they bake in the oven to anneal the damage caused by the X-rays before I can put them in the programmer and have another go.Īm I the only one that misses having to provide -12vdc or +25vdc to a part in order to program it? Why on earth would you want to throw away perfectly good EPROMS when the only alternatives are nearly free eeproms that are drop in replacements? :) When I’m testing my hand written machine language, I find I often need to change all 256 bytes of available data in my solid-ceramic case 1702 EPROMS. Posted in Tool Hacks Tagged blacklight, eprom, eraser, flourescent, uvc Post navigationĮxcellent, and I applaud resisting the urge to throw away all those windowed parts, as they have plenty of useful life in them. Of course, if you don’t need a bulk eraser you could shop some garage sales for a UV pacifier cleaner which can also erase EPROM chips. After bolting the parts into the case he added a spring-loaded timer knob and a safety switch that kills the power when the case is opened, similar to the UV exposure box we looked at yesterday.
He used parts from a fluorescent black light and acquired a new bulb that generates light in the UVC spectrum, the band which works as an eraser for the chips. Instead of buying a tool to erase two or three chips at a time he built his own bulk EPROM eraser from an old metal toolbox. Not to be confused with EEPROM, which are electronically erasable, these EPROM chips require a strong source of UV light to blank the old data before they can be written again. He found they were in possession of over a hundred Erasable Programmable Read Only Memory chips (EPROM). Belongs to a hackerspace that works hard to keep hardware from going to the landfill.