It has never locked up my calc, I have rom 1.2 MTNBIKE560@aol.com wrote: > l don't know about anyone else but is sqrxz locking up anyone else's ti-86? > l have rom 1.2. it seems that after switching virtual screen to NO (which l > couldn't figure out what this did anyway) l could play for a few more seconds > before it locked up the graph screen with random pixels, locked up, and > turned off. what's up with this?