Marechiare wrote: > Just code self-check part the way it won't burn anything > in case it gets corrupted. You have no way of knowing what it might do if it gets corrupted. Having the suspect code check itself is frankly a silly idea. > And, yes, bootloader with a checksum > probably would be a better choice. Just probably? ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .