I've got a file for Super Bowl with the same option for Freeplay as for the Bally games.
Set the dipswitches for the max. credits both on and the credits are never lower than 1.
I have no way to test this myself.
Is there someone who is willing and able to burn his own eproms en test this on his game?
This was done in co-operation with the guys from PinMame.
Maybe some more Bell Games are to follow.
Please send me a PM if you are willing help.
Peter
www.inkochnito.nl