> Wouter, I considered, by some measurement (using basical Windows > subroutines) that NT or Win 2000 is totally useless in this > region...Timing > can differ about 100 per cent or more from time to time. I > use an old 485 > based computer with Dos for such things, but it's difiicult to do such > advice for newbees... For the newer PICs which write very fast I would expect the timing for a programming that bit-bangs the programming from the PC to be an order of magnitude worse than for a programmer that just gets the data from the PC, so even when measurements vary by 100% they would still be interesting. And I hope you don't mean to say that every newbie must keep and old (485-based, where on earth did you find that off-by-one beast ;) ) PC around just to program PICs! Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.