I have had a problem with mame ever since I started back in 2001.
On Horizontal scrolling games, I get a line that scrolls up the screen every few seconds. It has happened with every version of mame, Computer and that I have used. I have started building my cab and it still does it with that. It is more noticable on Pacland. It has been doing my head in for 8 years now, I need to get to the bottom of it. Any ideas??