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Difference between revisions of "MBC1 (Game Boy mapper)"
Torchickens (talk | contribs) (Created page with "{{Image}} '''MBC1''' is a licensed Game Boy chip and Game Boy mapper by Nintendo and Sharp, with memory bank controller support. It is among the first Game Bo...") |
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*[[The Legend of Zelda: Link's Awakening]] | *[[The Legend of Zelda: Link's Awakening]] | ||
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<ref>[https://gbhwdb.gekkio.fi/cartridges/mbc1.html Game Boy hardware database]</ref> | <ref>[https://gbhwdb.gekkio.fi/cartridges/mbc1.html Game Boy hardware database]</ref> | ||
Revision as of 17:53, 15 December 2021
MBC1 is a licensed Game Boy chip and Game Boy mapper by Nintendo and Sharp, with memory bank controller support.
It is among the first Game Boy mapper chips; for basic games (and graphics, performance) before the release of the Game Boy Color. As only 32KiB of ROM can be accessed at a time, the MBC1 (Memory Bank Controller-1) is used to access 16KiB areas in banks beyond that position (so 2:4000 would map to 0x8000) and so on.
Certain games such as Alleyway do not require the MBC; they can only access up to 1:4000-1:7FFF; which is the last offset of their ROM size; 32KiB).
In order to change ROM banks in a game that supports the MBC, the Game Boy CPU will act as if it is writing the contents of the accumulator (a) to 0x2000-0x3FFF in the ROM; in order to change to the bank matching the hexadecimal value in the accumulator.
Some Game Boy games/software with this chip use different wiring for an external RAM mode (known as MBC1-M), and this might be why games like Pokémon Red and Green Versions can have save battery functionality (usually from a button cell), as opposed to other means of saving progress like a password. MBC1/MBC1-M supports external RAM/save files between 2KiB-8KiB (for the largest 8KiB/32768 bytes, this can be split using four SRAM banks in blocks of 0x2000 bytes size each).
Even though MBC1 was designed originally for the Game Boy, later MBC1 games have Game Boy Color enhancements such as Tetrix DX.
Nintendo-published games with this mapper
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- Balloon Kid
- The Bugs Bunny Crazy Castle
- Donkey Kong (Game Boy)
- Donkey Kong Land
- Donkey Kong Land 2
- Donkey Kong Land III
- Game & Watch Gallery
- Game Boy Gallery
- James Bond 007
- Kirby's Dream Land
- Killer Instinct
- The Legend of Zelda: Link's Awakening
- Yoshi
- Mario's Picross
- Mole Mania
- Nintendo World Cup
- Pokémon Red and Green Versions
- Super Mario Land
- Super Mario Land 2
- Tetris Attack
- Tetris DX
- Wario Land: Super Mario Land 3
- Yoshi's Cookie
Game Boy Wars and Game Boy Wars Turbo also use this mapper, but were published by Hudson, however Nintendo also own rights to the Wars series.
External links
