A pretty good attempt at a fairly basic CPU emulation, although the user interface could definately use some improvement. Given such a limited set of possible commands, a pointer-driven QWERTY keyboard layout is somewhat unwieldy, and being able to express values in hexadecimal would be preferable to binary. Don't expect to be able to figure out how to use this without first reading the instructions on divby0.net, as it's very unclear from playing the level.