Reply To: How can I use core-specific button remapping for Retroarch emulators? 3.0 beta 2

[Floob]

It looks like this may be slightly bugged in the existing retroarch version in RetroPie:
https://github.com/libretro/RetroArch/issues/1593
http://blog.andressm.org/new-retroarch-features-2/

You could do this with manual configs by the look of it (in first link above), but I’d be tempted to wait for an updated version.

In the short term you could remap per system as opposed to per core?