On Sat, Sep 18, 2004 at 12:21:33PM +0200, Lucian Muresan wrote:
> Ville Syrj�l� wrote:
> >
> >Do you know if there's some real the difference between composite and 
> >scart-composite?
> >
> 
> I presume there is no difference on pin 4 of the HD-15 
> (http://dzeus.student.utwente.nl/g400/win2kfaq.html#scart_rgb), and I 
> think on the original Matrox cable adaptor for composite and S-video, 
> it's the same pin that is wired to the yellow composite plug. So there 
> might be a difference on the other pins when setting "Composite or 
> S-video" (I think this is the windows Powerdesk setting that actually 
> corresponds to the the directfb matrox-cable=composite setting), to get 
> S-video signal, but I can't test this as I don't have a S-video capable 
> TV (no S-video mini-DIN, no S-video capable SCART wiring), but anyway, 

Yes, DirectFB composite == Windows Composite / S-Video.

> even so, the yellow composite plug from the original Matrox adapter 
> always carries composite signal. It even might be that the sync signal 
> in the RGB configuration actually carries composite, too, and the TV 
> only uses sync out of that signal, when properly set into RGB mode.

That's how I think it works too. The only thing that keeps bothering me is 
that I don't know what scart-composite does differently and I don't have 
the equipment to analyze the signals.

On G450/G550 the situation is different though. It uses vsync as the sync 
signal in scart-rgb mode.

-- 
Ville Syrj�l�
[EMAIL PROTECTED]
http://www.sci.fi/~syrjala/


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