> I want my pic to switch between 3 different programs saved in a eeprom. > To do this I was thinking in (perhaps) microprocessor mode. > Where can I find huge information about this mode? Um, the manual? Are the 3 programs small enough so that they could all fit into the internal memory together? Even if this takes a bigger PIC, that would be simpler than providing the external memory and messing around with microprocessor mode. By the way (if I recall right) only some 17 and 18 series PICs can do microprocessor mode. ******************************************************************** Olin Lathrop, embedded systems consultant in Littleton Massachusetts (978) 742-9014, olin@embedinc.com, http://www.embedinc.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.