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-$0400 $0800-$0C00 $1000-$1400 $1800-$1C00 $2000-$2400 $2800-$2C00
+-----------+-----------+-----------+-----------+-----------+-------------+
| $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.