I’ve just installed a fresh image
The apps/emulators directory is empty
I transferred a rom over; Mother3.gba
I ran the first core; mgba. It worked without even having to download/move any BIOS files over
I ran the next core; gpsp. It didn’t work, as it needed a BIOS, and had a version conflict. See below.
I ran the next core; gpsp+ standalone. It worked, and also automatically had a BIOS file in the installation zip file, installed in the same directory; apps/emulators
The default location for GBA BIOS on a fresh 0.5 installation is not the same directory as the core file. By default the BIOS are all required to be installed in the /home/cpi/apps/emulators/BIOS/ directory. This is for cores that are used in Retroarch. It is defined in the config file. You can confirm and change this in the Settings>Directory>System/Bios entry in Retroarch.
The standalone gpsp+ needs the core to be in the same directory.
You will need to have gba_bios.bin in two locations:
- /home/cpi/apps/emulators/BIOS/ for gpsp (Retroarch Core)
- /home/cpi/apps/emulators/ for gpsp+ (Standalone)
As stated above, MGBA generally doesn’t need one.
Delete the retroarch gpsp core that is automatically downloaded. It is using the wrong version. You need this one: https://www.dropbox.com/sh/onjshlt5940z24b/AABNFzD0D3jKjrS40e6bmGaLa?dl=0
You can also find it here:
http://buildbot.libretro.com/nightly/linux/armv7-neon-hf/latest/gpsp_libretro.so.zip
(@guu it might be worth updating a lot of the action.config files to have the updated download location in next update)
The action.config file that automatically downloads the core is using the older location that does not work:
https://buildbot.libretro.com/nightly/linux/armhf/latest/gpsp_libretro.so.zip
Do not use this one. This is the one that got installed incorrectly by default.
I would go so far as to redownload the mgba core as it is also using the wrong file, despite working. You can find it here:
https://buildbot.libretro.com/nightly/linux/armv7-neon-hf/latest/mgba_libretro.so.zip
Let me know how you go.