Adi Linden wrote... >Is there a good migration guide or something that outlines the differences >between the 16F and 18F devices (apart from studying that datasheet). You might want to look at Microchip application note AN716, "Migrating Designs from PIC16C74A/74B to PIC18C442": http://www.microchip.com/1010/suppdoc/appnote/all/an716/index.htm Much of what's in there should apply to 16F-to-18F migration as well. Dave D. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads