I ONLY use ASH 3.0 on my 82 R.V. 19.0 and never had a crash. OShell is more like OS-Hell for the Q var thing. Too many of my basic games use Q. Of course, if u use matrices a lot, you could say the same of ASH 3.0. But, ASH seems the better choice. (Especially w/ the only '82 ASM tetris). -Larry Currie Larry1492@Juno.com Noted Author of Whack-A-Mole 2.7