Thanks Nick,
Yes it helps, because this verifies that I'm on the right track.  This is what 
I was planning to do in lieu of a kernel function, because I couldn't see a 
way in the code to do it directly.
--Glen

On Friday 11 November 2005 3:06 am, Nick Bane wrote:
> > Is there a way to easily construct a second frame buffer that can be
> > swapped with the first one?  How then would one switch between frame
> > buffers? --Glen
>
> If you look at the sources for the sa1100 framebuffer you can see that
> it is possible to manipulate the relevant memory in the driver though
> there is no provision for it.
>
> You can switch framebuffers using virtual consoles as one can with
> alt-f[n] as one can on a standard pc style install. I have a pxa270
> development system doing just that.
>
> Alternatively you can read/write the file /dev/fb0. For rapid switching
> you would probably want to mmap the data and memcpy the framebuffer to
> application malloc'd ram.
>
> Hope that helps.
>
> Nick Bane
>
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