On Feb 10, 2006, at 10:06 AM, David VanHorn wrote: > The chip has proper home values in EE, indicating that it did > get proper comms with the PC, and should have homed to the > programmed address. > Are there any known circumstances where a PIC CPU will run but fail to accurately read the EEPROM? Undervoltage or slightly overvoltage, for example? (one would hope BOD would prevent UV problems, but...) BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist