
========================
=  Mapper 225          =
========================

Example Games:
--------------------------
52 Games
58-in-1
64-in-1


Registers:
---------------------------

  $5800-5803:  [.... RRRR]  RAM  (readable/writable)
                (16 bits of RAM -- 4 bits in each of the 4 regs)
  $5804-5FFF:    mirrors $5800-5803

  $8000-FFFF:  A~[.HMO PPPP PPCC CCCC]
    H = High bit (acts as bit 7 for PRG and CHR regs)
    M = Mirroring (0=Vert, 1=Horz)
    O = PRG Mode
    P = PRG Reg
    C = CHR Reg


CHR Setup:
---------------------------

               $0000   $0400   $0800   $0C00   $1000   $1400   $1800   $1C00 
             +---------------------------------------------------------------+
CHR Mode 0:  |                             $8000                             |
             +---------------------------------------------------------------+


PRG Setup:
---------------------------

               $8000   $A000   $C000   $E000  
             +-------------------------------+
PRG Mode 0:  |            <$8000>            |
             +-------------------------------+
PRG Mode 1:  |     $8000     |     $8000     |
             +---------------+---------------+
