[Open-graphics] Open exercise in developing test logic (video)

[Timothy Miller]

On 10/2/06, Simon Persson <simper-2 at student.ltu.se> wrote:
> Hi!
>
> > So, to begin with, how about someone give me the raw timing numbers
> > for, say, 800x600 at 60.  Shortly, I'll provide a module header for the
> > video pins on the two interfaces.
>
> At the job I had this summer I played around with a virtex-II pro and tried to
> make a video controller and got something that seemed to work.
> The xilinx example files had the timing numbers needed. From there:
>
> // 800 X 600 @ 60Hz with a 40.000MHz pixel clock
> `define H_ACTIVE                800     // pixels
> `define H_FRONT_PORCH   40      // pixels
> `define H_SYNCH                 128     // pixels
> `define H_BACK_PORCH    88      // pixels
> `define H_TOTAL                 1056// pixels
>
> `define V_ACTIVE                600     // lines
> `define V_FRONT_PORCH   1       // lines
> `define V_SYNCH                 4       // lines
> `define V_BACK_PORCH    23      // lines
> `define V_TOTAL                 628     // lines

Thank you.  This is exactly what I wanted.

>
> Would the rest of the video controller be useful? Just thinking that something
> simpler than the one in svn could be useful for testing.

That's the objective.  Something simple.  If yours is simple, we could
hack it in.

I'm just about to post a module that's a template for head zero's
video signals.  Using that, you can wrap it around just about
anything.

Thanks!