> Is there a way in MPASM to fill the memory space between my program > end and the end of physical memory with GOTO xxxx so that the program will goto > an error trapping routine when this happens? You can fill a specific number of instructions, but I don't think there is a way to fill all remaining space automatically. It would be really easy to post process the HEX file to do this however. > Do I need to be concerned with PCLATH with a 12F675 ( 1 k program memory space)? Not for GOTOs and CALLs. PCLATH still matters when modifying PCL directly. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics