okay here it is
open nulldc
(dont run any roms)
menu:
options / select plugins /
go down to the bottom where it says "Maple(input/saves plugins" and select the joystick option at the very bottom. (Port A)
click okay
go back to options /select plugins
now the 2 drop down boxes under the joystick option should be lit up. put both of those on the only option avaible.
hit okay once more.
go back to the options menu.
scroll down to maple
select port A
put a check next to u360 joystick
and then go to config.
set the config for the anaolog only (not digital)
and you can also set your buttons as well.
works for me, hopefuly it works for you. let me know
btw: if the joystick option under maple menu doesnt show up, try restarting the emulator.