First off, are talking about the EPROM on the CPU board or are we talking about the EEROMs on the program memory board.?
I have had some problems with the EEPROMs using Wayne's (ZL2BKC) reader/writer.? ?I have several EEPROM boards and have rewritten them all - one seems to work after writing, but fails some time later (days) - my conclusion is that one of the EEPROMs have a problem.? I have written the particular board multiple times with the same result (erased and rewritten).? What I have not done is to try to overwrite the EEPROM without erasing it.? Not sure of Wayne's code will do that, but I will eventually get back to the project and try to see if I can do that.
Cheers!
Bruce
