Reply 20 of 28, by Horun
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cyclone3d wrote on 2020-12-03, 23:53:Even having the same size EEPROM as the board you are working on doesn't always work properly. Some boards want specific types o […]
Even having the same size EEPROM as the board you are working on doesn't always work properly. Some boards want specific types of EEPROMs.
Just get a few of each size like you have listed and that should cover most everything.
Then when you run into something that doesn't work you can go searching to figure out exactly what you need.
A lot of the older boards (486 and below) used EPROMs... so there isn't necessarily an easy way to tell exactly what EEPROM will work without trial and error. Chances are that if there are BIOS mods or upgrades for specific boards, somebody else will have already figured it out.
Agree !! There is no magic little group of eeproms that will cover from 286 thru socket 775. Many old 286 and 386 need a true UV EPROM of exact type unless someone found the magic type that will work thru trial-n-error.
Once you get above Slot1/SlotA and soc370 you start running into PLCC types and they vary as much as DIPS... just my opinion 😀
Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun