pub fn board_to_mapper(board: &str) -> Option<u16>Expand description
Resolve a UNIF MAPR board name to its iNES mapper id, or None if the
board is unknown / not implemented by RustyNES.
Matching is case-insensitive and tolerant of the standard UNIF vendor
prefixes (NES-, HVC-, UNL-, BMC-, BTL-) — "NES-NROM" and
"NROM" both resolve to mapper 0. The table is the RustyNES-implemented
subset (porting an unimplemented board would only fail later in dispatch);
it is not the full UNIF board universe.