Hi Dave,

I figured that would be the solution; the best solution of course is to have a driver that can support 24bit ;) I probably wouldn't use this display with either of the PXA's mentioned simply because I couldn't take full advantage of the depth.


On 12/19/05, Dave Hylands <dhylands@gmail.com> wrote:
Hi Chris.

>  The problem is that it's a 24bit display. From my understanding (please
> correct me if I'm wrong) the PXA255 can handle up to 16bit color. I use the
> PXA27x and run a 18bit and that's pretty much the maximum color depth.
>  If someone knows a way around this, I'd be uninterested to hear their
> thoughts.

The "simple" solution would be to map the 16 bits out to 24. Normally
the 16 bits is arranged as a 5-6-5. I'd tie the least significant bits
of each 8 bit color to the most significant bit (that way you get a
true black and a true white).

Any other solution (using some kind of hardware lookup table would
require custom software that doesn't presently exist, since indexed
color is almost always of the 8bit -> 24 bit variety.

Dave Hylands
Vancouver, BC, Canada

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Chris Clough
Chief Hardware Architect
Key Devices, Inc.