Mapper Support

[lukexor]

The current mapper support allows playing ~85% of NES released titles. There are still several hundred games that can't be played on TetaNES. This issue tracks progress towards increasing mapper support.

There are over 260 mappers and sub-mappers but some of them only support a single game. While complete mapper support would be great, the following lists some of the more common mappers to target first.

Many of these mappers are variants of other mappers with slightly different behavior and so a good starting point is to read the NES documentation for it (https://www.nesdev.org/wiki/Category:INES_Mappers) and use an existing mapper as a template to start from. It's an exercise left to the developer to find ROMs to test the mapper with.

When choosing to take on implementing a mapper, please create or find an issue for it to assign to yourself. This issue can then be updated with in-progress work.

Please also try to adopt a similar style and ordering of methods as existing mappers for consistency.

• [x] Mapper 000 - NROM (247 titles) (bce39fb)
• [x] Mapper 001 - SxROM/MMC1B/C (680 titles) (bce39fb)
• [x] Mapper 002 - UxROM (272 titles) (fbe3afe)
• [x] Mapper 003 - CNROM (156 titles) (6d98eef)
• [x] Mapper 004 - TxROM/MMC3/MMC6 (600 titles) (6bb87e5)
• [x] Mapper 005 - ExROM/MMC5 (25 titles) (2564a3a)
• [x] Mapper 007 - AxROM (75 titles) (c7046d4)
• [x] Mapper 009 - PxROM/MMC2 (11 titles) (4198718)
• [x] Mapper 010 - FxROM/MMC4 (3 titles) (32690b6)
• [x] Mapper 011 - Color Dreams (34 titles) (8294f91)
• [ ] Mapper 013 - CPROM (1 title)
• [ ] Mapper 016 - Bandai (15 titles)
• [ ] Mapper 018 - Jaleco (15 titles)
• [ ] Mapper 019 - Namco 163 (19 titles)
• [ ] Mapper 021 - VRC4a/VRC4c (2 titles)
• [ ] Mapper 022 - VRC2a (2 titles)
• [ ] Mapper 023 - VRC2b/VRC4e (10 titles)
• [x] Mapper 024 - VRC6a (1 title) (fd2075d)
• [ ] Mapper 025 - VRC4b/VRC4d (6 titles)
• [x] Mapper 026 - VRC6b (2 titles) (fd2075d)
• [ ] Mapper 032 - Irem (6 titles)
• [ ] Mapper 033 - Taito (9 titles)
• [x] Mapper 034 - BNROM/NINA-001 (5 titles) (22c97e2)
• [ ] Mapper 064 - RAMBO-1 (5 titles)
• [x] Mapper 066 - GxROM/MxROM (17 titles) (14ab2d3)
• [ ] Mapper 068 - After Burner (4 titles)
• [ ] Mapper 069 - FME-7/Sunsoft 5B (15 titles)
• [x] Mapper 071 - Camerica/Codemasters/BF909x (16 titles) (2b3e22e)
• [ ] Mapper 079 - NINA-03/NINA-06 (16 titles)
• [x] Mapper 155 - MMC1A (2b3e22e)
• [ ] Mapper 206 - DxROM/Namco 118/MIMIC-1 (45 titles)

[tedsteen]

You can check BNROM/MINA-001 here, it works like a charm!