On Mon, 2005-11-28 at 18:10 +0000, Tony Houghton wrote:
> In <[EMAIL PROTECTED]>, Mark Adams wrote:
> 
> > I've successfully generated a WSS waveform using a Matrox G550 simply
> > by creating the appropriate bit pattern on a tiny surface at the top
> > of the screen.  The problem is, however, that TVs look for the
> > waveform on the composite input, even when in RGB mode.  With the G550
> > you can create a nice composite signal that includes WSS but when you
> > try to do RGB, you're stuck because (AFAIK), you can't generate
> > composite video at the same time as RGB.
> 
> Can you get a PAL (or NTSC) RGB signal from the second head complete
> with support for interlaced field syncing? I thought that only worked
> with S-Video or Composite.

I'm pretty sure that's what I've got going on my setup with a Matrox
G450 with a home-made RGB cable from the second head. The picture is
perfect in terms of interlacing on a CRT TV.

Unless someone convinces me otherwise!

;)

Cheers,

Laz


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