i've noticed a MAJOR issue with 1964 while running in fullscreen mode. If something pop-ups on your desktop (like a virus warning), 1964 will attempt to go to window mode, but will instantly switch back to fullscreen mode. The problem is the emulator will not be able to exit fullscreen mode (ive tried alt-enter, alt-f4, ctrl-alt-delete, alt-tab, escape, ext). Also, all the function keys (f1-f12) stop working so i cant even save. When this happens, i usually have to shut down my entire computer to end 1964. Its getting REALLY annoying, its happened to me 3 times now. Hope this is fixed in 1.0