gene.heskett at verizon.net
Sat May 27 18:17:20 EDT 2006
RJRTTY at aol.com wrote:
> In a message dated 5/27/06 2:51:00 P.M. Eastern Daylight Time,
> vchester at setec-cr.com writes:
>> I'm still wanting to run Roy's VGA AND Chris' Svid adapters at the same
>> time, and keep a Coco standard RGB output in reserve. That makes three video
>> outs using the single RGB header. Only two would be used simultaneously. But
>> since I'm planning on putting it all into a PC case, I don't want to have to
>> open 'er up and pull cables to switch from one to another.
>> Would it be possible to have three sets of transistors Q5, Q6 & Q7 (with
>> their resistors of course) one set each to drive the two adapters and the
>> one Coco standard RGB simultaneously? What about Hsync and Vsync? Would
>> these need separate drivers as well? How?
> It would be easier to clip the input resistors on either my converter or
> on chris' S-video converter then you could connect them both at the
> same time. The sync signals can be combined without any modifications.
That, depending on the lengths of the cables, could lead to some
interesting edge effects. With short cables, with short being defined
as less than say 5 feet, it will probably be ok.
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