"(But then I ought to be able to program it blank it out to all 0's and fin= ish it off & just not erase )" Hi Andrew - not sure exactly what you mean here but "blank" NV memory gener= ally means all 1's. If you "blank" it by writing 0's to it you probably won= 't be able to program it. Erasing will usually (always?) set the memory to = all 1's. Stephen --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .