INES Mapper 077

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 =  Mapper 077          =
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 Example Game:
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 Napoleon Senki
 
 
 Notes:
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 This mapper uses an 8 KiB SRAM to provide both 6 KiB of CHR-RAM and
  four-screen mirroring.
 
 Registers: (** BUS CONFLICTS **)
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   $8000-FFFF:  [CCCC PPPP]
     C = CHR Reg (2k @ $0000)
     P = PRG Reg (32k @ $8000)
 
 
 CHR Setup:
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 CHR-RAM is fixed at $0800-$1FFF.  CHR-ROM is swappable at $0000:
 
    $0000-$07FF $0800-$0FFF $1000-$17FF $1800-$1FFF $2000-$27FF  $2800-$2FFF
   +-----------+-----------+-----------+-----------+-----------+-------------+
   | $8000,ROM |  {1},RAM  |  {2},RAM  |  {3},RAM  |  {0},RAM  |Internal VRAM|
   +-----------+-----------+-----------+-----------+-----------+-------------+
 
 When making an emulator, you do not need to care about the specific order of
  the CHR-RAM banks: just provide 10KiB from $0800-$2FFF.