A credit mode only available when the appropriate set chip has been used to select the credits per coin (token) amount. By selecting a non-zero number for the credit amount, the token credit mode can be selected in self test, while selecting a zero disables the credit mode. If the game was in token credit mode before using the set chip to change the credit amount to zero, the game defaults to Montana-style credit mode when powered up. (Refer to Montana-style credit.)
