[Coco] RGB2VGA DE0-Nano Programming Help - Resolved

Steven Hirsch snhirsch at gmail.com
Sat Aug 1 08:59:14 EDT 2015


On Sat, 1 Aug 2015, Zippster wrote:

> Leftmost column missing in 80 column?
>
> I don’t think it’s the monitor, or the RGB2VGA board.

You can try playing with the code.  Here's a snippet of a note Luis sent 
me on the subject last fall:

-----------------------

you can change the front porch and top border in the
genlock.vhd:

        if (shrink = '0') then
            front_porch <= 128;
        elsif (apple2 = '0') then
            front_porch <= 202;
        else
            front_porch <= 184;
        end if;

(change) 184 to 200 and test it.

---------------------

This solved the same issue for me, albeit with an older version of the 
FPGA code.

Steve


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