//OLED screen test and OLED frame328 
   with or without SD-MMC Card Shield 
  are compatible in Gizduino 328, plus and X.

Read this:

 ChangeLog:(Sample codes)
 06/02/14 - @egizmoMehatronix Central 
          - SD library Modified and additional codes
            for gizDuino + and X.
      
           
 For gizDuino 328:(UnComment the two define ports
            if you are using the gizDuino 168/328 ONLY)
            
 For gizDuino + or X: Same procedure in + and X 
            if you want to use them. 
            
Go to the *selection of gizDuino Boards to use.

//Add the "SD" modified library - 06/02/14 to

Arduino - 1.0.5>Libraries>Paste(Replace) SD.