Neo Geo button mapping in MAME

[Dazz]

Ok, I thought I saw a thread long long ago about how to map your joystick in MAME differently when Neo Geo games were launched.  Using the ctrlr files or something like that.

I have searched and most threads are fairly old on this topic and mention .ini files which MAME does not use anymore.  Could someone give me some guidance on how I would map Neo Geo game buttons with the below setup?  Neo Geo would be using 7, 4, 5, 6.

.123
.456
7

Any help or guidance would be greatly appreciated!

Thanks!

[Hoopz]

It's in the Wiki:

The most driving reason to make your own ctrlr file probably is also NeoGeo games and a control panel with a 7 button layout. The 7 button layout is a way to have the Street Fighter II 6 button rectangle physical layout & NeoGeo's 4 button in a (curved) line physical layout. However, to use the two different layouts, the buttons need to be reassigned depending on which game is being played. This can be done by making the changes once with the ctrlr file, or by making the changes many times (once for each NeoGeo game) with the standard method.

Details here:  http://wiki.arcadecontrols.com/wiki/Ctrlr_file