Groovymame Centering and HSize

[Soulchip]

Hi guys, I have followed I think all tutorials and I was able to configure all my games resolutions for all emulatores. I have a little problem with groovymame, I was able to center the screen in all games (I think so, I haven't found one that is not centered yet) but some games are getting outsize the screen in the right and left (overscan I believe)

So I followed this line to center the image

15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 192, 288, 448, 576 (original Arcade 15.7 kHz preset)

15625-16200, 49.50-65.00, 2.000, 4.700, 6.000, 0.064, 0.192, 1.024, 0, 0, 192, 288, 448, 576 (edited Arcade 15.7 kHz preset)

I have the same vallues in my ini than in this example. I actually modify mine to 6.000 and all games look centered now...

How do I make the image thinner to avoid horizontal overscan?? (vertically the image is fine)

The problem is only inside groovymame, I corrected all the resolutions for windows and all the other emulators using ArcadeOSD.

Thank you guys!

[Calamity]

You need to increase both horizontal front and back porch values, by the same amount. That will make the visible area narrower.