INES Mapper 200

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 Here are Disch's original notes:  
 ========================
 =  Mapper 200          =
 ========================
 
 Example Games:
 --------------------------
 1200-in-1
 36-in-1
 
 
 Registers:
 ---------------------------
 
 
   $8000-FFFF:  A~[.... ....  .... MRRR]
     M = Mirroring (0=Vert, 1=Horz)
     R = PRG/CHR Reg
 
 
 CHR Setup:
 ---------------------------
 
       $0000   $0400   $0800   $0C00   $1000   $1400   $1800   $1C00 
     +---------------------------------------------------------------+
     |                             $8000                             |
     +---------------------------------------------------------------+
 
 
 PRG Setup:
 ---------------------------
 
      $8000   $A000   $C000   $E000  
     +---------------+---------------+
     |     $8000     |     $8000     |
     +---------------+---------------+