Dreamcast VGA

[downsouth420]

I have a third party VGA adapter for my Dreamcast. I love it, but of course not every game supports VGA. While I do know I could just patch certain games to work, the games I want to play don't have patches available. Is there a way I could add some kind of switch to fool my DC into displaying regular video through the VGA adapter?

[NFG]

In most cases I've found that you can trick the game into displaying in VGA by leaving the VGA box in RGB mode, and switching to VGA a few seconds into the boot process.  Some games check the VGA status often and it's harder to trick those. 

Bangagioh was a really hard game to fool, but when I finally got it going the game was 1/4 sized in a corner of the screen, with garbage tiles scattered around the rest of the screen.