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software I2C with a pic16f628a I tried your tutorial 6 . I get Writing.. efg remove the resistor it writes it and reads it. I was thinking maybe a bad chip.
But I don't no much about I2C so I been going over your tutorial 6. I made the circuit on a solderless bread board.
that got me to thinking. Your good at that.It has to be something. You could take a ohm meter to it and check the resistance between +5 and the data line.
I have tried a 24C01 24C04 24C08. I.m powering it from the pickit2 thats the only thing different then Nigels tutorial boards. The ICSP is hooked to portb7 and portb6 so is the eeprom SDA on portb7 SDC on portb6