I am a newbie about pi and retropie and I would like to use the Mame2010 emulator, but it is impossible to me enter into the menu to config the controllers. I mean, when the game is started I push the L2 button to show the in-game Menu (input (General)…) but I have no way to enter in this option to configure the controls.
I push all the button on my keyboard and my ps3 controller and I cannot enter. In the other version of mame emulators I can enter without problems. Do I need to configure a button specifically in retroarch.cfg?
Thanks in advance and sorry for my bad english ^^.