[Coco] Pristine image on coco2 and coco3 with GBS8200

[Luis Antoniosi (CoCoDemus)]

In time the Y output this circuit drives will work with any composite or
even s-video monitors/tvs. Of course as monochrome 4 degree levels only.


On Wed, Feb 6, 2013 at 1:02 PM, Luis Antoniosi (CoCoDemus) <
retrocanada76 at gmail.com> wrote:

> exact just like RGB on coco3.
>
> On Wed, Feb 6, 2013 at 12:55 PM, John W. Linville <linville at tuxdriver.com>wrote:
>
>> 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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>>
>
>
>
> --
> Long live the CoCo




-- 
Long live the CoCo