[Open-graphics] Sample VGA translation code, for nanocontroller

[Mark]

Timothy Normand Miller wrote:
> On 9/6/07, Petter Urkedal <urkedal at nbi.dk> wrote:
>> (One last observation:  VGA code is embarrassingly parallel, unless
>> memory access is the real bottleneck.  If we were to add an interrupt
>> context, then I think we could almost as easily have 2 or 4 symmetric
>> contexts (threads) instead.  I'm just pointing it out for now, since
>> dealing with resource sharing may however prevent us from exploiting the
>> parallelism, and I don't know if this is any useful in 3D mode.)
> 
> I had considered that idea but then rejected it when I considered
> certain cases of the nanocontroller processing DMA command packets.
> There, we're only doing one thing (decoding commands), and we need the
> throughput to be efficient.
> 
Is there any chance you could pound out a quick code sample for the DMA 
case?  Since the nanocontroller has to be able to support both this and 
the VGA translation, I'd find it helpful to have an example for both. 
If you have time, etc., of course.