[Coco] Pristine image on coco2 and coco3 with GBS8200

John W. Linville linville at tuxdriver.com
Wed Feb 6 12:55:02 EST 2013


On Wed, Feb 06, 2013 at 12:15:06PM -0500, Luis Antoniosi (CoCoDemus) wrote:
> Here is the circuit:
> 
> pic.twitter.com/nIwx3GeR <http://t.co/nIwx3GeR>
> 
> You will need:
> 
> 4x 2n4401
> 3x 1K Ohm resistor
> 1x 4.7K Ohm resistor
> 1x 150 Ohm resistor
> 2x 75 Ohm resistor
> 
> It drives YCbCr in 480i. So, don't expect your brand new TV will be capable
> of handling it. None of my HD Tv weren't.
> 
> Again, thanks to Daniel Campos who shared this circuit with me. I modified
> it to get the signals direct from the MC6847 instead.
> 
> Felipe

Cool!  I suspected that something like that would work, but hadn't
gotten around to trying.  I'm guessing that one drawback is that
artifact colors don't work -- correct?

John
-- 
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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