Hi, I have just recently migrated from PIC16F877 to PIC18F452. When I try programming my PIC18F452 using MPLAB(v6.4), I am forced to program till 7FFF memory location. Any value less than that returns a 'Failure'. This consumes a lot of time. The programmer I am using is 'PICSTART Plus Firmware Version 3.0.0.' Kindly advice Leo Jose --------------------------------- Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it! -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.