PS VITAIt needs add dip switch setting/enter service mode. Can't continue in Dodonpachi Daioujou and can't change the setting now.
data is located at "ux0:/data/pfba"
default rom path is "ux0:/data/pfba/roms/"
rom path can be changed in "ux0:/data/pfba/pfba.cfg"
preview images can be put in "ux0:/data/pfba/previews/rom-name.png"
in the ui: START = gui options + default rom configuration
in the ui: SELECT = selected rom configuration
in game: SELECT+START = menu
in game: SELECT+L = saves states
in game: SELECT+SQUARE = service switch
in game: SELECT+TRIANGLE = 1P+2P switch
in game: SELECT+LEFT/RIGHT = change shader
in game: SELECT+UP/DOWN = change scaling