[Coco] WIP - RGB2VGA 800x600

[CoCo Demus]

You forgot about the "digitizing incoming video" part which is 640x200 in
64 colors.

Also, since coco3 is tied to NTSC subcarrier frequency I must do the same
if I want stable pixels. In my case 388/55*64 Mhz

Look my article: https://sites.google.com/site/tandycocoloco/rgb2vga



On Wed, Oct 28, 2015 at 7:08 AM, tim franklinlabs.com <tim at franklinlabs.com>
wrote:

>    OK, now my curiosity is flaring. You can generate the 800x600 (60Hz)
>    timing with a 40Mhz clock. Why is your clock so fast?
>
>    Reference: [1]http://tinyvga.com/vga-timing/800x600@60Hz
>
>      On October 28, 2015 at 9:03 AM Cocodemus <retrocanada76 at gmail.com>
>      wrote:
>      Also the board now is locked at 228mhz, in quartus 13.0 i always got
>      bad timing with jittering pixels. On 13.0 it run at 114mhz
>      Sent from my iPhone
>      > On Oct 28, 2015, at 1:33 AM, Mark McDougall
>      <msmcdoug at iinet.net.au> wrote:
>      >
>      >> On 28/10/2015 6:28 PM, CoCo Demus wrote:
>      >>
>      >> This is due to QuartusII 15.0 be able to generate a better and
>      optimized
>      >> code.
>      >
>      > Cite your source???
>      >
>      > Regards,
>      >
>      > --
>      > | Mark McDougall | "Electrical Engineers do it
>      > | <http://members.iinet.net.au/~msmcdoug> | with less resistance!"
>      >
>      > --
>      > Coco mailing list
>      > Coco at maltedmedia.com
>      > https://pairlist5.pair.net/mailman/listinfo/coco
>      --
>      Coco mailing list
>      Coco at maltedmedia.com
>      https://pairlist5.pair.net/mailman/listinfo/coco
>
> References
>
>    1. http://tinyvga.com/vga-timing/800x600@60Hz
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
>