( Jaleco SS8806) (Japanese Jaleco titles such as Baseball 3).( Bandai mapper) ( Gundam Wing, Dragonball Z).( Color Dreams mapper) ( Crystal Mines/ Exodus (the boulderdash clone not the ultima game), Pesterminator, King of Kings, Menace Beach/ Sunday Funday).MMC4 (enhanced MMC2 in Family War and Fire Emblem).MMC2 ( Punch-Out!! with and without Mike Tyson).( FFE F3K) (more Front Far East copier games).AOROM ( Rare titles such as Battletoads).( FFE F4K) (Front Far East copier similar to Konami VRCs).( MMC5) ( Castlevania 3, Uncharted Waters, some Koei titles). MMC3 ( Super Mario Brothers 3, Mega Man 3, Crystalis).CNROM ( Gradius, Solar Wars, Panesian titles).Mapper 0 refers to a 16 KB or 32 KB program ROM and an 8 KB graphics ROM connected directly to the cartridge edge. The multiplex with 7 is actually implemented as an OR gate and serves to make sure that the game engine is always available in $C000-$FFFF and that reset and interrupt vectors are always available in $FFFA-$FFFF. Writes to the program area $8000-$FFFF will load a new value into the register and subsequently to the most significant bits of the ROM's address bus, mapping a 16 KB bank into $8000-$BFFF. | 128 kilo by 8 bit ROM D7-D0+- to 2A03 data bus Other mappers are more complex but operate on similar principles. Similar concepts are present in the sideways ROM mods for BBC microcomputers. Mapper hardware is present in most cartridges to provide more address lines under software control so as to allow more than 32 KB of ROM to be accessed. The NES PPU has 14 address lines and 8 data lines to the cart edge. The NES's 6502-compatible 2A03 CPU has only 16 address lines and 8 data lines, and addresses $0000-$4017 are mapped to NES internal hardware. "Mapper" is iNES's term for a set of NES cartridge boards that behave in a similar fashion.
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