[Coco] CoCo 3 to RBG...

[Steve Batson]

Forgive me if I missed the answer to all of this....I've been away on vacation, there's been multiple threads about the topic and I'm not sure what my next step should be...

Remember, I purchased the card, built the appropriate CoCo to CGA cable,  and couldn't get it to work from CoCo to my LCD Monitor with a SVGA connector. I have not built the circuit offered combine the sync signals yet. I basically have 2 questions:

1) Has anyone got it working without the extra circuit?
2) Is it working well using just the board and the extra circuit?

I'm a bit confused with all the stuff on this topic so far on multiple threads.

Thanks.

Steve
 


On Jul 22, 2011, at 6:45 PM, gene heskett wrote:

> On Friday, July 22, 2011 09:36:09 PM mike delyea did opine:
> 
>> Sorry I am not an electronics whiz by any stretch of the imagination but
>> - When hooking the coco to an Amiga 1080 monitor I used a 74ls02 to
>> combine HSYNC and VYSNC.  This gave me perfect 80 column text on the
>> 1080.  Looking back on my notes, this hack only provides composite
>> sync.  Maybe this helps.
>> 
> I never had a 1080 or a 1084 myself, I had a maggy 8CM515, buckets sharper.
> 
> Little known trivia bit:  The honest to goodness Commode-door monitor cable 
> actually had a 74LS02 to do exactly that, encapsulated into the molded 
> backshell of that DB23 connector.  I know, I carved 2 of them open 
> carefully with a dremel and replaced the chip when it got blown.  Not even 
> commie's tech folks would admit to that, preferring instead to sell yet 
> another $29.95 cable, or worse yet, a $159.95 genlock board.
> 
> I am glad you reminded me of that, it is also quite do-able.
> 
> BTW, that isn't true composite, but its close enough for most of the girls 
> we go with if you don't mind a wee bit of horizontal jitter in the top 2 or 
> 3 lines of the video.
> 
> Cheers, gene
> -- 
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Steve Batson
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