how to emulate
Master System Mark iii
MegaDrive
SEGA CD
in 3 different cores for 3 different overlays set per core global
Rename the core file.
Example:
- genesis_plus_gx_sms_libretro for Sega Master System
- genesis_plus_gx_scd_libretro for Sega CD
Maintain genesis_plus_gx_libretro for Mega Drive.