INES Mapper 013

iNES Mapper 013 is used to designate the CPROM board.

 Here are Disch's original notes:
 ========================
 =  Mapper 013          =
 ========================
 
 
 aka:
 --------------------------
 CPROM
 
 
 Example Game:
 --------------------------
 Videomation
 
 
 Notes:
 --------------------------
 This mapper uses 16k of CHR-RAM.  CHR-RAM is swappable.
 It also has bus conflicts!
 
 
 
 Registers (**BUS CONFLICTS**):
 --------------------------
   $8000-FFFF:  [.... ..CC]
     C = Select 4k CHR (RAM) page @ $1000-1FFF
 
 
 
 CHR Setup:
 --------------------------
 
       $0000   $0400   $0800   $0C00   $1000   $1400   $1800   $1C00 
     +-------------------------------+-------------------------------+
     |             { 0 }             |             $8000             |
     +-------------------------------+-------------------------------+