> 2. My code must be protected to the extent possible, at least from my own > factory overseas Sounds like you need to use a different factory. Why do you need code protection so desperately? I've done a lot of PIC projects, and this rarely comes up. Even if I gave out HEX files on a silver platter, it would still take a lot of work to figure out what is going on and reconstruct source code that can be meaningfully changed. What kind of product is this? How many will be shipped? How long will these remain "current"? ******************************************************************** Olin Lathrop, embedded systems consultant in Littleton Massachusetts (978) 742-9014, olin@embedinc.com, http://www.embedinc.com -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads