I assumed you were referring to a PS3 emulator as well, which functions with isos, and you shouldn't rely solely on original discs; I don't know much about PS4 emulators, but it seems they're likely in development.
I assumed you were referring to a PS3 emulator as well, which functions with isos, and you shouldn't rely solely on original discs; I don't know much about PS4 emulators, but it seems they're likely in development.