Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!CARLETON.EDU!CURRENTM
From: CURRENTM@CARLETON.EDU (Michael Current)
Newsgroups: comp.sys.atari.8bit
Subject: Connecting Atari 800 to a video input
Message-ID: <9002170529.AA19885@ucbvax.Berkeley.EDU>
Date: 14 Feb 90 23:55:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
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In the article <13178@cbnewsd.ATT.COM> Nick DiMasi gives an explanation of the
chroma and luma outputs of the Atari XE's.  What I found surprising to read
was that the 800 has no split chroma/luma output.  I've always had the general
impression that every XE/XL/800 EXCEPT the XE Game System has the separate
video outputs, including my 130XE and my family's 800.  Maybe somebody else can
confirm this.  I believe that all but the XE GS have five outputs at the
monitor jack: audio, composite video, composite chroma and composite luma.
(And the XE GS has just audio and comp. video.)  To address the original
question, I agree that it sounds like the yellow connector is the luma, and
the black obviously the audio.  Either the white or the red should be the
composite video, which is what we're after. 
Hope this helps.  -Michael

Michael Current / currentm@carleton.edu