Nintendo Campus Challenge 1991 - Mapper 555 Not Supported.

[Akan9021]

Hello. Are MAME mapper implementations useful for you? It supports Mapper 555.

Here's the relevant code: https://github.com/mamedev/mame/blob/63fdf58bac60f72cd64eeeee1af6eb7d43bcc301/src/devices/bus/nes/event.cpp#L172

The No-Intro ROM can be launched with this command: mame.exe nes -cart "Z:\Nintendo Campus Challenge 1991 (USA) (Competition Cart) [b].zip" ("To play, press start on controller 2" - assigned to the number 2 key itself by default).