>Tell me more - I will start coding on it first time tomorrow to demonstarate >a prototype at my custumer tuesday... Use the 16C77 docs, unless you are doing something with the internal EE or I2C master mode, or such similar upgrades. I develop my code on a '77 emulator (Tech Tools) and then it is only the config fuses to change for the '877. I'm not using '87x-specific features (yet). Andy ================================================================== Andy Kunz Life is what we do to prepare for Eternity ------------------------------------------------------------------ andy@rc-hydros.com http://www.rc-hydros.com - Race Boats andy@montanadesign.com http://www.montanadesign.com - Electronics ==================================================================