>AIUI the 16C84 was microchips first electrically erasable part > and was very popular among hobbyists at the time It was exactly why I switched from OTP and expensive UV- erasable windowed 68HC micros (and to some extent micros which required an EPROM for s/w) to the 16F84 Joe ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2015.0.5577 / Virus Database: 4213/8572 - Release Date: 11/14/14 --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .