Homepage › Forums › RetroPie Project › Everything else related to the RetroPie Project › NeoGeo not working in 3.0 › Reply To: NeoGeo not working in 3.0
yeah you can create it and use this as a template to what you need to put in the actual file itself.
https://github.com/ssilverm/PiMAME/blob/master/.gngeo/gngeorc