Date   : Wed, 24 Oct 2007 15:26:57 +0200
From   : anders.carlsson@... (Anders Carlsson)
Subject: OT was Re: UM1233 TV modulators...

Pete Turnbull wrote:

> Normally the signal is indeed monochrome,

Is there a good reason why this is the case? Is the video signal inside the 
computer splitted into luminance and chrominance and at one point (inside 
the RF modulator?) merged together? How about the RGB signal, I would expect 
that is the main signal that is converted to composite video/RF. The only 
practical reason I can see is in case the BBC Micro can be used on a NTSC 
display that won't display colours correctly, and the colour burst was 
removed from the monochrome composite to cause as little disturbance as 
possible.

Regards

-- 
Anders Carlsson