Developer Markus95 has leveraged the PS2 iso functionality of hacked PS4s to run ports of emulators (PGen and QuickNES Retroarch core, respectively). As he mentions himself, these ports are not native PS4 code, but running within the PS2 emulator on the console, and will soon be made obsolete by the expected (hopefully soon?) release of Retroarch for the PS4.
Nonetheless, it’s always great to have options.
The issue with using the iso format for your emulator needs is that you have to go through a bit of re-packaging in order to add your roms. As the developer explains:
HowTo: Megadrive/Genesis and NES emulators (PS2 ports) on PS4
unpack Megadrive-Genesis_(PS2).pkg or Roms_NES_Installer.pkg (for Genesis and NES emulators respectively) with FAKE_PKG_Generator
in the resulting folder, grab disc01.iso
Open that disc01.iso with CDGenPS2 v3, where you’ll find a “ROMS” folder
Put all your roms in that folder
Recreate the iso file, name it disc01.iso
Recreate the fpkg with your newly created disc01.iso file, and set the same password (00000000000000000000000000000000).
For the NES emulator, you also need to do the following things for your first install of the homebrew:
Once the Roms_NES_Installer.pkg fpkg is created, install it on your hacked PS4 through the debug settings menu like any other fpkg
Once installed, run Roms Nes Installer on the PS4
From the menu, go to Cdfs:/, then in the “ROMS” folder
Check all your roms (X button on your pad for each one of them)
Once all roms are selected, press “R1” and “copy”
Go back to the main menu, select MC0:/ or MC1:/ then do “paste”
Leave the “Installer” app
Only then can you install the Retroarch_Nes.pkg
If you’re willing to go through that fairly heavy process, initial reports of the release are that these emulators work pretty well 🙂
Download Megadrive/Genesis and NES emulators for PS4