It seems none of the four Playstation 1 cores (Beetle PSX HW/Beetle PSX/Duckstation/PCSX ReARMed) support the ISO file type.
There is only an ISO image of 'Grand Theft Auto 2' available in the net, so it is not possible to play that game with Retroarch. I created a cue file, but that doesn't work, too.
There is only an ISO image of 'Grand Theft Auto 2' available in the net, so it is not possible to play that game with Retroarch. I created a cue file, but that doesn't work, too.