[Coco] Help with RGB cable

[Marcus Vinicius Garrett Chiado]

Thank you very much, Rob. I recently bought a *real* 1084S (a D-II
model) and will try to use my actual cable with it for it has
composite sync already. As soon as I pick the monitor up, I will let
you know.

:-D



2007/3/26, coco at yourdvd.net <coco at yourdvd.net>:
> Unless I am mistaken, The Apple II GS monitor requires a composite sync
> while the coco 3 outputs individual horizontal and vertical sync. You
> can generate this by using a 74LS02. Connect the CoCo's H and V syncs
> to the inputs of one of the NOR gates. The output of that gate becomes
> negative composite sync. Run that into both inputs of another NOR gate
> and the output of that gate becomes postive composite sync. Connect the
> inputs of the other two unused gates to ground and leave their outputs
> open. You can draw power for the NOR gates from the joystick port, or a
> battery with a 5v regulator or a 5v wal-wart, etc.
>
> IF YOU NEED A SCHEMATIC, LET ME KNOW, I CAN EMAIL IT TO YOU.
>
> ROB