> Soooo, look to your application for answers. Quite so. I started a major project using 16F88s but quickly realised that the coding time was going to be very much shorter with an 18F. The project involved modules processing SMS strings and the 16F's single FSR and banked non-contiguous RAM made the s/w tedious and complicated to write as well as slow to execute A little forethought is time well spent 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 .