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drhelius / Gearsystem

Sega Master System / Game Gear / SG-1000 emulator for macOS, Windows, Linux, BSD and RetroArch.
https://x.com/drhelius
GNU General Public License v3.0
250 stars 45 forks source link

Janggun Mapper #46

Closed carmiker closed 2 years ago

carmiker commented 2 years ago

Currently, Gearsystem does not properly support the Janggun mapper, used by Janggun-ui Adeul.

As luck would have it, I documented the mapper at smspower a few months ago: https://www.smspower.org/Development/Mappers#JanggunMapper

You can also see my implementation of it in C here: https://gitlab.com/jgemu/cega/-/blob/master/core/cega_sms.c#L286

drhelius commented 2 years ago

That's awesome, thanks for pointing out, I will definitely implement it.