Here is PFBA: the Portable FBA.

This version of FBA is maintained by Cpasjuste, and is multiplatform (Vita, RPi, Linux...), with optimisations for ARM devices.

Key configuration is adapted to Pandora, so all 4 buttons are mapped to Arcade buttons (5th and 6th buttons are letters O and P).
Insert Coins is mapped to "Select"
Start is mapped to "Start".

By default, pfba looks for roms in appdata/pfba/roms but you can add alternative path: after 1st start, edit pfba/pfba.cfg to select alternate roms path.

History log
=========
Build 06
-----------
* Using latest sources
* Version is completly new
* Using gl4es and gles2 backend

Build 05
-----------
* Never released

Build 04
-----------
* Compile with LTO to get back to build02 level of performances
* Audio frequency can be selected now in Emulation option (44,22 and 11kHz)
* Fixed QuickBrowse key issues

Build 03
-----------
* Fixed sound for the 1st game
* Fixed audio lag
* Fixed analog control (using left nub)
* Menu is now SPACE
* Added QuickBrowse in roms browser (so pressing 0..9 A..Z do something).
* Some games are not compatible with ASM m68k core, so it's disabled for them

Build 02
----------
* Repackaged

Build 01
-----------
* Initial build
* Pandora port use SDL2/GL

A thread is open here: https://pyra-handheld.com/boards/threads/pfba.82425/