A while back, someone talked about problems getting vice64x to run in 720p mode. No one ever responded and I find that I'm having the same difficulties.
If I run the xbox in 480i/p mode, vice64x works fine. I see that there's a menu option to switch to 720p mode, but when I try that, it tells me that it's not valid. As soon as I enable 720p mode on the xbox and run vice64x, the screen is filled with garbage. I've tried navigating through the menus (remembering the number of ups/downs/clicks) to try to switch to 720p. That doesn't appear to work, either.
Any thoughts at all? Vice64 seems to be ideal, but not if I have to switch the xbox back to 420p mode first.