Reply To: My Retropie Bartop Home › Forums › RetroPie Project › Peoples Projects › My Retropie Bartop › Reply To: My Retropie Bartop 02/08/2016 at 14:54 #116494 lamaman1971Participant Hi – sorry about the late reply. I use the following, all with the default MAME mappings Player 1 Start & Coin Player 2 Start & Coin 6 x Action buttons Happ Trackball Joystick All into an iPac2 controller. Works fine with SNES, Neogeo etc – not had any problems with it yet. Enjoying RetroPie R3 using Pi3 and IPAC-2. Happ Controls and Trackball in a custom Bartop with a VGA 4:3 monitor. Primarily used for MAME with a little UAE thrown in.