Gravis Ultrasound 'Classic' jumper settings
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JP2 - GAMEPORT
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E = Enable D = Disable 


Base Address Jumper Block 4 5 6 7 
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210 OFF ON  ON  ON    :||| 
220 ON  OFF ON  ON    |:|| 
230 OFF OFF ON  ON    ::|| 
240 ON  ON  OFF ON    ||:| 
250 OFF ON  OFF ON    :|:| 
260 OFF ON  ON  OFF   |::| 


All other jumper blocks 
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ON OFF ON OFF |:|: