I tried to warn you guys when Cowering was boasting about this in MESS and for me to fix my emulator :P

I said you'd break a ton of games, just to display d4s' "not for sale" screen on his unofficial translation.

You either do this one right, and spend the several months running real hardware tests to reverse the underlying math algorithm, or you leave those delays out. Otherwise you are asking for trouble.

Reference with all the technical background on just how complex the mul / div delays really are: