[Coco] CoCo 2 Factory Composite Video RE'd

theczar7 theczar7 at gmail.com
Mon Dec 15 16:29:46 EST 2014


My D board displays artifact colors. Just added connector at rf input. Has been constant all these years!



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<div>-------- Original message --------</div><div>From: "John W. Linville" <linville at tuxdriver.com> </div><div>Date:12/15/2014  1:14 PM  (GMT-05:00) </div><div>To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> </div><div>Subject: Re: [Coco] CoCo 2 Factory Composite Video RE'd </div><div>
</div>On Mon, Dec 15, 2014 at 03:56:54PM -0200, Daniel Campos wrote:
> 2014-12-15 15:03 GMT-02:00 John W. Linville <linville at tuxdriver.com>:
> >
> > The modulator on the CoCo 1 is different, it just receives composite
> > video from a MC1372 directly on the motherboard.  All that is needed
> > to get composite video from a CoCo1 is an amplifier, and in many
> > cases you can skip that and just wire-in a connector.
> >
> > John
> >
> 
> 
> Not so simple, for both methods, unless you are not going to use artifact
> colors. The know mod schematic (using two 2N2222) for CoCo1 works, but
> artifact colors became pink and green, instead of orange and blue.

YMMV -- I have a CoCo1 with just a wire for composite video, and it
displays artifact colors as expectd.

-- 
John W. Linville	 Someday the world will need a hero, and you
linville at tuxdriver.com	 might be all we have.  Be ready.

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