>I wonder if you could get away with a 16C7X-JW for the prototypes, then >shift to the flash parts when available. I'm doing exactly that. The only feature not implemented is use of the internal EE, and codespace checksum on powerup to determine validity. Andy ================================================================== Eternity is only a heartbeat away - are you ready? Ask me how! ------------------------------------------------------------------ andy@rc-hydros.com http://www.rc-hydros.com - Race Boats andy@montanadesign.com http://www.montanadesign.com - Electronics ==================================================================