Without having to learn Japanese, there are just a few cases where this keys are used as such in some games. It might still be viable for keyboard-less users.
With that in mind, i have modified the original PR to match current code base. I also added OPT1 and OPT2 keys as alternate as these keys are used as Select and Start at least for the Super Mario Bros. port.
This is in response to this PR : https://github.com/libretro/px68k-libretro/pull/81
Without having to learn Japanese, there are just a few cases where this keys are used as such in some games. It might still be viable for keyboard-less users.
With that in mind, i have modified the original PR to match current code base. I also added OPT1 and OPT2 keys as alternate as these keys are used as Select and Start at least for the Super Mario Bros. port.