07/01/2014 at 17:50
Post count: 51
this is weird. It should work almost out-of-the-box… Sorry to insist on that but did you ensure that paths are correct under the Mame section in es_systems.cfg? Do you have only one COMMAND line commented out (without the #)? Also did you try with the newest Retropie release (2.0)?
After triple checking paths and COMMAND line then just let focus on one rom for instance “karateblz” (and your roms have to be zipped). This one works for sure and requires no special bios as far as I know. If you have issue with it then it’s very likely you are not using the correct romset for this mame version.
hope this helps.