[Coco] rgb2vga rolling video

[Matthew Stock]

Thank you!  For some reason, I didn't get some of the earlier email.  I had
tried all of the dip switches to no result (well, no impact on the
rolling).  I'll take a look at the vsync and walk it backwards.  I'll let
you know if that resolves the issue.

Thanks again,

Matt



On Wed, Jan 8, 2020 at 6:57 PM CoCo Demus <retrocanada76 at gmail.com> wrote:

> don't forget the dip switches...
>
> On Mon, Jan 6, 2020 at 8:22 AM Ed Snider <zippster278 at gmail.com> wrote:
>
> > Also check connections on the output side for vsync if all looks good on
> > input
> > to the FPGA board header.
> >
> > - Ed
> >
> > > On Jan 6, 2020, at 10:18 AM, Ed Snider <zippster278 at gmail.com> wrote:
> > >
> > > Sounds like your vertical sync isn't getting through.  Check your
> CoCo's
> > vsync output,
> > > ribbon cable, connections, etc to ensure vsync is getting to the
> RGB2VGA
> > board
> > > and dev board header.
> > >
> > > - Ed
> > >
> > >> On Jan 6, 2020, at 10:04 AM, Matthew Stock <stock at bexkat.com> wrote:
> > >>
> > >> [ trying again with the proper email address ]
> > >>
> > >> Hello all,
> > >>
> > >> The holidays have given me a little time to tinker with the CoCo, and
> I
> > >> recently took the opportunity to order the RGB2VGA board that's up on
> > OSH
> > >> Park.  Soldered it up today and it looks great... except that the
> > display
> > >> is rolling vertically.  I've tried a couple of different monitors with
> > the
> > >> same result.  The test block screen looks solid and good, and so I
> > suspect
> > >> it's an issue with the CoCo 3 I have it attached to.  Anyone have any
> > >> suggestions on how to fix it?  I was going to start diving into the
> VHDL
> > >> and doing some debugging, but since I'm more of a Verilog person I
> > figured
> > >> I'd ask here and see if this issue has been seen and resolved
> before.  I
> > >> looked in my email history and nothing jumped out.
> > >>
> > >> Thanks for any assistance!
> > >>
> > >> Matt
> > >>
> > >
> >
> >
> > --
> > 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
>