=>There's another Unix simulator around, too - it was posted to this group =>by Dave Madden last november, and should be =>on ftp.sics.se as well (though I can't see it there). It needs C++ and X, =>and I still have a copy, though it would probably be better to look to =>Dave for any updates first. Hi. I'm still here, but haven't had much time to do PIC-related stuff recently. I've put the simulator Adrian mentioned up for anon ftp from: iii.net:/pub/pub-site/dhm/picsim.tar.gz I compiled it today with g++-2.6.2 and X11R6 and it still worked; I think I was using g++-2.5.4 and X11R5 back in November when I was last working actively on it. Several people took copies back then, but I only heard from one or two people, and only that they were having trouble compiling it (with older versions of g++ or AT&T c++). I haven't done any more on it because I'm trying to think of elegant ways to handle some tough issues; it's not specifically PIC-related, so I won't waste your time with it, but if anyone wants to discuss simulator design, I'd be glad to hear from you. Regards, d.