MAMEWorld Forums - EmuChat - Mame Arcade Cab - some but not all games upside down

HI

I'm almost finished setting up mame on an arcade cab using groovymame as the starting point and then mamewah as the front end.

All roms are there and seem to load fine but some are upside down. Checked the vertical ones and seems to be around half. Not checked many horizontal games but have found at least one which is upside down and would expect many more.

I've got the vertical games to display full screen rather than with a border so in mame.ini have norotate set to 1. (ie I physically rotate the monitor when I want to play vertical games).

Looking on line it seems like the solution is to add a game.zip.cfg file for the games which need flipping back right way up ie by 180 degrees with the text:

video_rotation = 1

But this doesn't change anything.

I don't understand why some games are fine and some upside down and seems to be no common factor but assume something must be driving this.

Regardless of what's causing it, I'm happy to add a file for each game that's upside down to correct it, so wondering what am I doing wrong please and how can I get these games to display the correct way up.

A global solution would also be ideal but I guess in order for it to work it needs to only apply to some of the games not all and can't see how that could work until I could find out what's causing it in the first place.

Any help and advice very much appreciated.