Dunno if everyone has seen this, but there is a fairly new 990 web page up by David PItts, who has written a simulator and cross-development tools for Linux and Windows. It might be interesting to take something like this, or M.E.S.S. or one of the other simulators, and reimplement the DX10 4A dev tools. Maybe somebody might even still have them around somewhere. Hmmm. http://www.cozx.com/~dpitts/ti990.html later, jbdigriz