Excuse my ignorance, but what exactly happens if u dont do the timing fix? Will it crash? And do all 1200s need it? What can I do to check if an a1200 needs it ? There was some game but I forgot...
That game is Mad Professor Mariarti. Let it run into the intro (don't press fire to start the game) and it will freeze somewhere quite soon (highscore screen iirc).
Without the fixes you'll get freezes in some games (with 1D4 and 2B board revisions):
http://www.ianstedman.co.uk/Amiga/amiga_hacks/A1200_Mobo_fix/a1200_mobo_fix.html
