Feature Request SGB/GBC Mix

[rtomasa]

I've noticed the following scenario (which I assume match with real hardware behaviour) when playing The Legend of Zelda: Link's Awakening DX:
GB Model = SGB
The game runs in SGB resolution, uses SGB game bezels, and it is displayed using DMG 4 palette colors.
GB Model = GBC
The game runs in GBC resolution, do not use SGB bezels, and it is displayed using GBC palette.

I'm wondering if it would be feasible to force any GBC game to run in this way:
GB Model = SGB
The game runs in SGB resolution, uses SGB game bezels, and it is displayed using GBC palette.

[Augusto7743]

good feature

[endrift]

SGB and GBC are inherently incompatible. Using SGB borders in GBC games is done in emulators by running in SGB mode until it uploads a border, then rebooting in GBC mode and keeping that border. I will probably add that at some point, but it's not the same thing as a hybrid mode.

[majutsushi]

I noticed that the standalone mGBA has an option to configure a model as "Super Game Boy Color (SGB + CGB)", which allows Link's Awakening to run in the way mentioned above (at least after applying a patch). There doesn't seem to be a way to enable this mode in the libretro core though. I'm not sure if this is using a full "hybrid" mode or the rebooting approach, but it seems to be working fine. It would be great if this could be supported in the libretro core as well, but I have no idea what would be required to make this work.