MAME button issues

[dziactor]

Hey all, need some help.

Running a I-Pac Ultimate board and having some issues with Mame. I have a 4 player setup and when I open notepad the buttons and joystick keys work perfectly.

When I open Mame and try some 4 player buttons player 3 joystick doesn't work. On some games, player 2 start doesn't seem to work and same with some of the buttons. On G.I Joe player 2 start didn't work either. I would turn on my Bluetooth keyboard and click the letter to start and it would.

Not sure what to do. Any help is appreciated.

[Titchgamer]

They are probably not mapped in mame.
Open the controls menu and map all the controls that should sort your problem.