free play

Recently I've been asked to make a couple free play patches for games @twistedsymphony wanted to run at his arcade parties. In general they allow the attract mode to run until you press a start button. Also if you abandon a game, it will return to attract mode. Save those tubes! I thought some...

So I wanted to be able to enable / disable free-play regardless of the rom's view on the matter, and since all roms are set to default to play with coins, some people have suggested a button in place of the "Bolt" Next to the coin return. I like the idea in principle, but as another person...