I've been using the ArcadeVGA card (first version) with my arcade monitor, but I now want to use prescaling in MAME since I decided to hardware stretch my games (defeats the point of using an arcade monitor, I know
). So, I need a video card with a little more power than the ArcadeVGA for prescaling to run smoothly.
I tried using a modern nVidia 6800GT card in combination with Soft15KHz and Quickres, however I can't seem to get the resolutions working correctly. In the boot screens the monitor displays the picture split down the center, which I've read is to be expected. However, once Windows loads and the Soft15KHz drivers are supposed to kick in, the screen still remains split down the center with the right half the screen displayed on the left side of the monitor, then an area of black space, and then the left half of the screen is displayed on the right side of the monitor. This is at a resolution of 640x480 at 60Hz, as set by Quickres. Also, when I try to run arcade resolutions such as 321x240, the monitor appears to go out of sync and the image is distorted/rolling. These resolutions work fine using the ArcadeVGA, so I'm not sure what the problem is! Any suggestions?