Mark Rages wrote: > My plan was to write a program to disable write > protection on the boot block, change the byte, then re-enable write > protection. *Think* about it. Write protection is there to prevent writes to program memory. It's purpose would be defeated if you could disable it from the program. ****************************************************************** Embed Inc, Littleton Massachusetts, (978) 742-9014. #1 PIC consultant in 2004 program year. http://www.embedinc.com/products -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist