How compatible is a 28xx EEPROM with its equivalent 27xx EPROM?
They are pin-compatible, but can one drop a 2864 in the place of a 2764, for example?
I wrote two different 28C64s and tested them in place of a 2764 (in a C64 cartridge) and they seem to work but are definitely unstable.
So, not sure if I have flaky 2864s or if they're not electrically compatible.
discuss both original and modern hardware for the bbc micro/electron
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