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numbski

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The purity and color convergence on my monitor need help, and I have been trying to sort it out using the dot cross hatch screen - not good enough. I really need a blank white screen to fix up the purity and then I can move on to convergence.

I don't suppose any of these games have what I need?
 
I don't know of any boards that do an entire screen of nothing but white.
I've seen color scales, and dot cloth grids, but solid white never.
 
MK2 has pure color screens. Can't remember if it has white though. Maybe even all the Midway boards from that era do as well.

Barring that, one of these does the job: http://craftymech.com/. Or if you have an old PC handy and a Radeon card, you can feed it a PC signal with Calamity's drivers.
 
Actually, I have an old ArcadeVGA AGP card here. May have to fire that up. It is odd - the cross hatch converges well over most of the screen, but one area the green is offset upward about a line. Very bizarre.
 
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