For anyone interested in the libretro core of PicoDrive, I have updated the original post of this thread
Quick Instructions:
- ssh to GS and issue:
curl -sL https://github.com/pleft/picodrive/releases/download/v1.92-gameshell/picodrive_libretro_gameshell_v1.92.tar.gz | tar -xvz --directory ~/.config/retroarch/cores/
- Launch the Retroarch from the menu,
- “Load core”: choose “picodrive_libretro_gameshell_v1.92”
- “Load content”: browse to your sega roms directory and pick a rom to play