First off, I just wanted to say thank you for all the work that's gone into GroovyMame, it's truly awesome stuff and running it on a dedicated CRT has been such a sight to behold.
I really appreciate the time spent to all of those involved.
If I understand correctly, Groovymame essentially will look at the supported modes of your monitor, whether you add these values manually or use presets within your vmmaker/mame ini files.
Groovy will best try and match a similar resolution the game runs at natively, and fill your screen on the horizontal accordingly, it will not do vertical adjustments.
I'm currently using a 32" Sony Trinitron TV (NTSC) and for me the best preset seems to be using NTSC in both vmmaker and mame ini. I've tried to use arcadeOSD many times to adjust any custom modes but adjustments of the porches does nothing realtime for me, even if i hit test the screen flashes for a second but nothing is happening in the way of adjustments. This happens whether i use the NTSC preset, leave it as default, or use an arcade_15 preset so I'm a bit confused.
As I understood it, AracdeOSD will show me the supported custom modes that can work with my graphics adapter & TV, and I can tweak them to get acceptable values to plug into my modes within the mame ini (if needed)
At this point everything is pretty much centered going with the NTSC preset so I'm happy, I was just curious if I had the concept of groovymame correct, and if I was doing anything wrong when it came to adjusting geometry.
Again,
Thanks very much for this fantastic project!