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Date:      27 Nov 2002 14:19:01 +1030
From:      "Daniel O'Connor" <doconnor@gsoft.com.au>
To:        Peter Jeremy <peter.jeremy@alcatel.com.au>
Cc:        Jason Andresen <jandrese@mitre.org>, "freebsd-stable@FreeBSD.ORG" <freebsd-stable@FreeBSD.ORG>
Subject:   Re: nvidia  tv-out
Message-ID:  <1038368940.9582.54.camel@chowder.gsoft.com.au>
In-Reply-To: <20021127032509.GA77914@gsmx07.alcatel.com.au>
References:  <20021121164650.421c9b9a.martin@gumucio.com> <86fztpn5zk.fsf@number6.magda.ca> <3DE2359D.8000101@mitre.org> <20021127032509.GA77914@gsmx07.alcatel.com.au>

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On Wed, 2002-11-27 at 13:55, Peter Jeremy wrote:
> On 2002-Nov-25 09:37:17 -0500, Jason Andresen <jandrese@mitre.org> wrote:
> >I got TV-out working on my GeForce 4 using the following config:
> >
> >Option "TwinView"
> >Option "SecondMonitorHorizSync"  "30-50"
> >Option "SecondMonitorVertRefresh" "60"
> >
> >Option "TwinViewOrientation"  "Clone"
> >
> >in Section "Screen"
> 
> The horizontal sync value looks dodgy.  A standard NTSC TV set
> uses 60Hz vertical and 15.750kHz horizontal with 2:1 interlace
> (50Hz and 15.625KHz for PAL).  Trying to run an ordinary TV
> at 30-50kHz horizontal stands a high risk of destroying the
> horizontal output transformer and associated components.

Assuming that the cards TV out driver will even bother looking at that
value..

The card probably totally ignores the refresh rate for TV out.

-- 
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 9A8C 569F 685A D928 5140  AE4B 319B 41F4 5D17 FDD5


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