Function new_m349 

pub fn new_m349(
    prg_rom: Box<[u8]>,
    chr_rom: Box<[u8]>,
    mirroring: Mirroring,
) -> Result<SimpleBmc, MapperError>

Mapper 349 (BMC-G-146 NROM/UNROM/NROM-256 multicart).

Errors

MapperError::Invalid on a bad PRG/CHR size.