[Coco] SVGA monitor

Steven Hirsch snhirsch at gmail.com
Sat Oct 24 21:49:07 EDT 2009

On Sat, 24 Oct 2009, RJRTTY at aol.com wrote:

> In a message dated 10/24/2009 2:40:33 P.M. Eastern Daylight Time,
> snhirsch at gmail.com writes:
>> I have questions about that.  I bought one of these boards on eBay and
> the
>> unit I received is behaving very poorly.  It resets  randomly and will not
>> display the CoCo output.
>> Color me  unimpressed.
> It is likely the output of the coco3 is overdriving the input of
> your converter.    I have run into this problem with  other
> commercial converters.    Try putting a 75 ohm  resistor
> in series in each of the RGB lines and see if that helps.

That's possible, but I think the real issue is that this unit doesn't 
support 15.75Khz. RGB with separate V & H sync.  When I connect my Amiga 
using the composite sync output it seems fine.

I'll try padding the inputs tomorrow and see if things cooperate.



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