Hello Brian, > You may be interested to know that recent versions of CCS PCM include > the following built in functions: > > read_program_eeprom(address) > write_program_eeprom(address,data) Thanks for telling that, as CCS doesn't send email to users telling what's on the newer versions. But I think US$99,00 for the upgrade is a bit high for a couple of functions I could develop with little efforts,if I found out what's wrong with my code, that's it... :( Anyway, nobody was able to find what's wrong with my functions? I've checked a lot of times and it seens perfectly right for me. I have the code protection *off* in my PIC16F877 and tried with that Flash Program Memory Write *on* AND *off* with no sucess... Best regards, Brusque