Too complex to go into details but I recently discovered it was possible to make a VGA to RGB SCART lead by splicing the two types together with the addition of an apparently simple circuit. The circuit combines the separate VGA H and V sync output to give the composite sync RGB SCART uses.
It's this sync combiner circuit I'm interested in. There are two versions I've found:-
The latter is derived from a larger DIY Dreamcast VGA Box circuit also featured there and found at several other places online too.
Has anyone here made a cable like this using either of the above designs or some other. There is a suggestion in one place that you can even get away with simply connecting the VGA H and V sync outputs together, grounding them with a resistor (no value given) and use that for the composite sync.
Sounds too easy to me but I know nothing about this really so I'm looking for practical advice.
It's this sync combiner circuit I'm interested in. There are two versions I've found:-
The latter is derived from a larger DIY Dreamcast VGA Box circuit also featured there and found at several other places online too.
Has anyone here made a cable like this using either of the above designs or some other. There is a suggestion in one place that you can even get away with simply connecting the VGA H and V sync outputs together, grounding them with a resistor (no value given) and use that for the composite sync.
Sounds too easy to me but I know nothing about this really so I'm looking for practical advice.
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