Looking for help with vertical scrolling

[dheck]

I am not sure what information I need to provide to get help with my issue.  I built my cabinet a while ago and I am just now getting around to fixing all of the bugs.  My issue is that when I play games like TMNT or any horizontal game it displays just fine.  It's when I try to play games like PACMAN or Galaga that I get constant vertical scrolling. 

I am using GROOVYMAME with an HD4350 graphics card.

I have this converter sending the signal from my computer to a Sony 27" Trinitron.

http://www.jasnet.com.br/products/vgaconverter/vgaconvv1_eng_v1.html

I have used this guide here to install all the necessary drivers and display resolutions.

http://geedorah.com/eiusdemmodi/forum/viewtopic.php?pid=1016#p1016

Can anyone help me out here?  If you need more information please let me know.

Thanks!


   

[Calamity]

You don't mention what monitor preset you're using. In case it's generic_15, change this in mame.ini:

 monitor custom
 crt_range0  15625-15750, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 192, 256, 448, 576