The following are the Dip Switch settings based off of MAME 0.180 source code.
 
Use this information at your own risk!  The information was parsed from the MAME source code and could contain errors as to the state, order or descriptions of what the switches do.  If you find an error, please let me know on the Contact Us form and I will work on correcting the issue. 
 
 
 
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Manufactured by bootleg, Released in 1983
ROM Version: Mario Bros. (Japan, bootleg)
Print
Dip Switch:SW1
12345678FunctionOption
OffOff      Lives3*
OnOff      4
OffOn      5
OnOn      6
  OffOffOff   Coinage1 Coin/1 Credit*
  OffOnOn   1 Coin/2 Credits
  OnOffOff   1 Coin/3 Credits
  OnOnOff   1 Coin/4 Credits
  OnOffOn   1 Coin/5 Credits
  OnOnOn   1 Coin/6 Credits
  OffOffOn   2 Coins/1 Credit
  OffOnOff   3 Coins/1 Credit
     Off  2 Players Game1 Credit
     On  2 Credits*
      OffOffBonus Life20k 50k 30k+*
      OnOff30k 60k 30k+
      OffOn40k 70k 30k+
      OnOnNone
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