[Coco] TRS-80 Tandy Color Computer CoCo 3 RGB Video Cable

[Gene Heskett]

On Sunday 22 July 2007, Steve Ostrom wrote:
>Sorry, Derek, your "grrr" would be directed toward me, but I'd be more than
>happy to send the cable to anyone who would be willing to reverse engineer
>it, if possible.  Maybe Mark Marlett would be interested, but he might have
>a similar cable he sells from Cloud-9.  Let me know if anyone would like to
>borrow this cable for awhile.
>
>-- Steve --
>
One of the things I recall was that for the amiga, there was a ttl buffer chip 
actually hidden in the db23 (thats right, its not a db25) connector at the 
computer end of the cable.  It buffered the sync signals cuz if the amiga's 
agnus chip saw all 5 of those 75 ohm loads, it would shut itself down.  More 
than 1 amiga 2000 shipped with a genlock card in it for video cuz folks 
thought that was the only way to get video out of one.

IIRC there was a similar rigging with buffering in a cable I once used with a 
coco3 to drive a multisync with, but no idea where it got off to now.  I 
faintly recall the multisync needed a 6 pin din connector.  Or was it the 
8CM515, I can't recall for sure now, so I think I'll go back to bed....

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
I know how to do SPECIAL EFFECTS!!