[Coco] Will this build-your-own s-video board work for CoCo 3?

Christopher Hawks chawks at dls.net
Wed Mar 9 07:57:04 EST 2011

gene heskett said the following on 03/09/2011 12:58 AM:
> On Wednesday, March 09, 2011 01:56:25 AM Rick Taylor did opine:
>> So how would one go about getting one of those scan doubler boxes?
> I am surprised that Roy hasn't chimed in by now.  However, the last I
> remember, he was a bit behind.
> ISTR Chris Hawks has something similar.  Chris?  Roy?

	I can reply, but, I'll soon be late for work.

	You can _almost_ use the Neobitz board with a Coco3. As Steve mentioned, the 
Coco3 outputs separate horizontal and vertical sync and the board expects 
combined. The chip in use (same as mine) can use the separate signals. You just 
need to remove the pullup from the unused input and connect the other signal 
there. The other possible problem is that the horizontal sync timing causes the 
left few characters in 80 column mode to be cut off. The HAWKSoft adapter has 
circuitry to adjust the timing. Easily added to the Neobitz, if needed.

	I'll write more, if needed after work.

Christopher R. Hawks
I never really understood how there could be things that would drive you
insane just because you knew them until I ran into Windows.
	-- Peter da Silva

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