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Re: Creator3D resolution switching



On Fri, 6 Apr 2018 18:11:40 +0100
Julian Coleman <jdc%coris.org.uk@localhost> wrote:

> I wonder about the first line, especially "0x0008 0x0180
> 0x0033" (ffbreg.h has the definitions of the values).  The
> documentation that I have doesn't explain all the values and
> combinations, but I would expect that first (UCL) to be 0x0108 (we
> don't change the first byte - it is set by the PROM).  If that's not
> the problem, it might be in our programming of composite sync instead
> of separate sync.  I'm not sure how to determine the correct settings
> for that though, and the current code is really only tested with
> monitors that are known to work with Sun framebuffers and a few
> others.

Oh well, I got hold of a second hand monitor with VGA input and that
works as expected. I think the VGA to HDMI adapter I was using was not
behaving correctly with this framebuffer. 


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