[Coco] Generating 6847 syncs.....

[Phill Harvey-Smith]

On 28/03/2016 19:01, Neal Crook wrote:
> Is it possible that there is noise (or other SI effect like a reflection )
> on the HS leading to double-clocking? That might tie in with a greater
> susceptibility on "busy" images. You could try a filter on HS followed by a
> schmitt trigger before driving the CPLD.

I did wonder about that, I've tried putting a 33R inline with FS as a 
start but will try with HS as well.

Cheers.

Phill.

-- 
Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric !

"You can twist perceptions, but reality won't budge" -- Rush.