> So, in the end, I guess neither one of us, has come any closer to understanding
> the true nature of the encryption,

It's unlikely to be state based like the fd1094, unless Razoola has kept that quiet. However the key could be just as big. Whats _really_ funny is that figuring out the encryption is very unlikely to make it possible to figure out the keys, you'll need access to all the boards.

The downside is you could potentially encrypt one game so that it will run on another working board, but getting eproms to replace the mask roms will cost more than buying a board & you could already do it with the phoenix roms anyway.

Doing something in a half arsed way definately does put people off doing it for real, I don't play games in MAME so getting it to run is my only motivation. Any of the PSX games that are added by someone else are ignored. Yes I can be an arsehole like razoola, but at least I admit it :-)

smf