UMZE

Useful keys:
F12: reset
F9: pause
F8: arrow down ("pound sign" on MZ-800 keyboard)
Home: blank key
Page up: GRAPH
Page down: ALPHA
End: BREAK/ESC
When screen gets corrupted, resize/maximize window to redraw it again.
For better performance results, disable JRA (Java plug-in) if installed. Applet uses native Java 1.1.8 that seems to be much faster than newer Java2 implementations :-(