Evening Gentlemen!
As soon as I discovered the existence of groovymame, I traded my nvidia card for an ATI one! However, after setting everything up, I have a problem that I'm unable to solve.
Since I run Hyperspin, I configured Vmmaker to generate magic modelines. However, it also generated some (non magic) modelines which mess the screen up when used. (the left and right parts of the screen are inverted). I used ArcadeOSD to set one of the magic modelines as desktop mode (which works fine) BUT Groovymame reverts back to one of the non magic modelines. How come is this? Isn't GroovyMame supposed to switch to the best resolution available for the game?
I enclose vmmaker and groovy ini files.
Any help is greatly appreciated!
EDIT: I forgot my graphics card details:
Ati Radeon 9250 PCI -> J-PAC -> Hantarex 9000
I also added a picture where you can see what the 'split screen' looks like