I wonder if there is a nice and easy to use x86 simulator like the MARS simulator for MIPS [1]? Some place where I can run (step through) little x86 assembly programs study their effect of the each register.<p>[1] <a href="http:&#x2F;&#x2F;courses.missouristate.edu&#x2F;KenVollmar&#x2F;MARS&#x2F;" rel="nofollow">http:&#x2F;&#x2F;courses.missouristate.edu&#x2F;KenVollmar&#x2F;MARS&#x2F;</a>