[Coco] CoCo 1/2 to VGA?

[Michael Graham]

So wait, does that mean you'd be able to get component video out of a 
late model CoCo 2 with a few video amps?  I'd like to try that.  I mean, 
I doubt it'd work on a modern LCD TV or anything, but I have a CRT TV 
and a CRT monitor that can both take low-resolution component video and 
display it quite well.  The monitor could probably do it even if it 
isn't quite at the right standard (it's a Sony PVM and has lots of 
adjustments).

-Michael

On 03/08/2013 12:12 PM, John W. Linville wrote:
> On Thu, Mar 07, 2013 at 12:43:13AM -0600, camillus Blockx wrote:
>> Well the rf modulater works with composite video. You can take that signal
>> after amplified it and end it to 75 Ohm to feed your a/v device. Look on
>> google to find schematic for amp. Know for shure there is one that works on
>> coco 2. Used it on my coco 2 myself.
> That is true on the CoCo1, but not really true on the CoCo2.  On the
> CoCo2, the Y, R-Y, and B-Y signals from the 6847 go to the modulator.
> The MC1372 inside the modulator combines them into the NTSC RF signal.
>
> The CoCo1 uses an MC1372 as well, but only to generate NTSC composite
> video which is then fed to a separate RF modulator.  That is why it
> is easier to convert a CoCo1 to composite video out than it is to do
> so for a CoCo2.
>
> John