[PSP] ms0: and ef0: on PSP GO

[DocMAX]

RetroArch tries to load retroarch.cfg from ms0: instead of ef0:

[DocMAX]

anyone?

[RobLoach]

I don't have a PSP, so I can't effectively test this. Pushed up a quick change over at https://github.com/libretro/RetroArch/pull/6599 .

[shoddydev]

hello. I ran into this problem today while trying to run Retroarch on the PSP Go. I found a way around it. You can use a Hex Editor such as HXD, load up the 81_libretro.pbp core in it and search for the ms0 string. You will have to modify the values of ms (6d 73) to ef which is 65 66. Search for all instances of ms0 and change it to ef0. there should be 3 instances. Then you do that for all the other cores too or just the emulator you want to run. Like if you just want to test a Sega CD game, just modify the picodrive core.

[cazrep]

hello. I ran into this problem today while trying to run Retroarch on the PSP Go. I found a way around it. You can use a Hex Editor such as HXD, load up the 81_libretro.pbp core in it and search for the ms0 string. You will have to modify the values of ms (6d 73) to ef which is 65 66. Search for all instances of ms0 and change it to ef0. there should be 3 instances. Then you do that for all the other cores too or just the emulator you want to run. Like if you just want to test a Sega CD game, just modify the picodrive core.

This solved my issue when trying to get TempGBA working. Great suggestion. I will also add that I am also using a PSP GO and the default save directory in Retro Arch for PSP 1.7.7 is still ms0 instead of the required ef0 for this generation of devices. This is noticed when trying to save the configuration files in the interface and an error with display at the top of the screen "Failed to save in ms0:"

[redthing1]

I also have this issue.

[andreigrigoruta]

Also have this issue, it tries to save to ms0 instead of ef0. Running latest build.

[LibretroAdmin]

@fjtrujy Any ideas here?

[fjtrujy]

This is still happening, RA has hardcoded the path ms0 for loading by default the RA config. I don’t have a PSP go, and actually I never used the elf0 unit.

I don’t know if there is a runtime way of getting the proper unit where the configuration need to be saved/loaded

let’s keep the issue open

[VorgonBattlecruiser]

Exactly the same thing is happening to me on RA 1.15.0. Cant save my configuration without an expandable storage card.

[MateusBMP]

The ARK-4 project use some specific bits to detect the current device:

But, in a more specific case, we can use the function sceIoOpen with the PSPSDK to check if the file exists:

We can check, in some step, if ms0:/PSP/RETROARCH/ exists and, if not, change to ef0:/PSP/RETROARCH/:

Or we can check the current device to use ms0 or ef0, but I think it's less efficient.