[Coco] Last video I promise... :)

[Luis Antoniosi (CoCoDemus)]

also, are you using 1% for the 75 ohms resistors ?

Luis Felipe Antoniosi



On Fri, Nov 28, 2014 at 8:02 PM, Richard Goedeken <
Richard at fascinationsoftware.com> wrote:

> Hi Luis,
>
> Thank you so much for designing the awesome video converter and making all
> the
> plans available.  I built one up yesterday and hooked it up to my Coco 3,
> and
> it works, but there is some noise in the video output and the colors are
> not
> exactly right.  Can you help me get it working?
>
> I uploaded a video which shows the problems very well.  It's raw mpeg2ts
> (AVCHD) at 1080i 60hz from my video camera; the file is about 131MB.  I
> didn't
> want to upload it to youtube which would crush the resolution and frame
> rate.
>  You should be able to view it with VLC or mplayer or similar:
>
> http://www.fascinationsoftware.com/media/Coco3-RGBVGA.mts
>
> In the video, I turn the 10k potentiometer up and down to show how it
> affects
> the colors.  You can see that there are some rolling bands of noise in the
> brightness values of the pixels.  And many of the colors seem to be the
> same
> shade.
>
> The test screen output (when the Coco is turned off) is perfect, so the
> problem is with the input section.  I wasn't sure exactly which build of
> your
> FPGA code I should use.  And I've never used FPGA tools before, so there
> was a
> little bit of a learning curve in installing the tools and using them.
> But I
> ended up with the latest git clone from the github repo (as of yesterday),
> and
> I used the Quartus programmer tool to write the output_file.jic into the
> serial eeprom loader memory.  Should I have used a different version?  Do I
> need to compile the fpga code?  It looks from your repo that you update the
> SOF and JIC files with every commit, so I assume that means I don't need to
> compile the project if I don't make any of my own changes.
>
> Any ways, thanks again for this great product, and I hope I can get it
> working
> here.
>
> Richard
>
> On 11/11/2014 05:03 PM, Luis Antoniosi (CoCoDemus) wrote:
> > It's all here:
> >
> > https://sites.google.com/site/tandycocoloco/rgb2vga
> >
> >
> > Luis Felipe Antoniosi
> >
> >
> >
> > On Tue, Nov 11, 2014 at 7:23 PM, Mark McDougall <msmcdoug at iinet.net.au>
> > wrote:
> >
> >> On 12/11/2014 2:42 AM, Luis Antoniosi (CoCoDemus) wrote:
> >>
> >>  Let's say: everytime you add a switch and a if condition the code
> splits
> >>> in
> >>> two and the fpga seems to execute both. It's all parallel. It's hard to
> >>> understand...
> >>>
> >>
> >> Is the code public? I can attempt to explain it if you're interested?
> >>
> >> 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
> >>
> >
>
> --
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>