Install libretro-beetle-pce-fast by entering the following commands in the terminal:
sudo apt update sudo apt install libretro-beetle-pce-fast
Libretro wrapper for the Beetle PCE FAST core
This wrapper makes Beetle PCE FAST core API compatible with libretro, thus allowing its use with libretro frontends, such as RetroArch. . This core emulates the TurboGrafx-16 Entertainment SuperSystem, originally known in Japan as the PC Engine. It also emulates the TurboGrafx-CD (CD-ROM²). . Beetle PCE FAST is based in the Mednafen "pce_fast" module, so it has some tricks to speed up the hardware emulation, but with some loss in accuracy.