> Anyway, I loaded it on a 877 and will see tonight if it works. It may not work. The 16F874 has unique RAM at F0h - FFh, whereas the 16F877 has this region aliased to 70h - 7Fh. If the code doesn't use RAM from F0h - FFh and doesn't screw eith the RP1 bit in STATUS (bad programming practise, but there seems to be no shortage of bad programmers), it should work. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.