Bought my stick not too long ago along with Pelican adapter and wanted to use it with MAME (which works GREAT by the way). The default button layout is kind of all over the place so I made a custom file. Here’s the file if anyone wants it.
Just place it in your ‘ctrlr’ folder and select it with whatever version of MAME you use.
The defaults are the six far right buttons and top and bottom 4 (they’re the same) for NeoGeo games.
If you want me to add something else, just ask and I’ll update the file. Enjoy.