INES Mapper 193

 Here are Disch's original notes:  
 ========================
 =  Mapper 193          =
 ========================
 
 
 Example Game:
 --------------------------
 Fighting Hero (Unl)
 
 
 
 Registers:
 ---------------------------
 Regs at $6000-7FFF = no SRAM
 
 Range,Mask:   $6000-7FFF, $6003
 
 
   $6000:  CHR Reg 0
   $6001:  CHR Reg 1
   $6002:  CHR Reg 2
   $6003:  PRG Reg
 
 
 CHR Setup:
 ---------------------------
 
       $0000   $0400   $0800   $0C00   $1000   $1400   $1800   $1C00 
     +-------------------------------+---------------+---------------+
     |           <<$6000>>           |    <$6001>    |    <$6002>    |
     +-------------------------------+---------------+---------------+
 
 PRG Setup:
 ---------------------------
 
       $8000   $A000   $C000   $E000  
     +-------+-------+-------+-------+
     | $6003 | { -3} | { -2} | { -1} |
     +-------+-------+-------+-------+