Rolling Thunder 2, Namco 1990   Pinout = JAMMA
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Dip Sw.
-------      1  2  3  4  5  6  7  8 
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Test         -                        Normal 
             +                        Test
Alwasy OFF      -  -  -  -  -  -  -   Always OFF

              
Turning the option sw. No. 1 "ON" enter the test mode where the game pricing
or other settings are changed.