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| [[Category:iNES Mappers|155]] | | #REDIRECT [[MMC1]] |
| [[iNES Mapper 155]] is assigned to games that require the MMC1A variant of the [[MMC1]]. Unlike MMC1B and MMC1C, MMC1A lacks the WRAM disable bit in the PRG bank register ($E000-$FFFF). Games that use this mapper write values between $10 and $1F to the PRG bank register, write to WRAM at $6000-$7FFF, and require the write to succeed.
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| According to the database shipped with Nestopia 1.4.0, these two Famicom games require this behavior:
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| * Tatakae!! Ramen Man: Sakuretsu Choujin 102 Gei (闘将！！拉麺男 炸裂超人一○二芸) ([http://bootgod.dyndns.org:7777/profile.php?id=3736 NesCartDB])
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| * The Money Game (ザ・マネーゲーム) ([http://bootgod.dyndns.org:7777/profile.php?id=3458 NesCartDB])
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| Either this was done as a copy protection mechanism or the programmers just weren't aware that later MMC1 revisions would add a bit for disabling WRAM.
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| Technically, these two games are on [[SxROM|SKROM and SJROM]], and so theoretically this mapper should not have to implement any of the boards that repurpose PRG or CHR pins (SE-, SH-, SN-, SO-, SU-, SX-ROM). However, it is probably still wise to pay attention to the caveats said [[MMC1|here]] and [[iNES Mapper 001|here]].
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