Benson,

Its all software, but as you know the architecture of the machine requires sending data from a main memory framebuffer to the LCD, and the "normal" display interface out of the OMAP2420 is not wired up.

It does not matter what hardware actually fills that main memory framebuffer before it is sent, so at the moment I use the CPU.
In future I hope to use other weapons at our disposal, that includes the built in PowerVR, the built in IVA or even the DSP.

I was merely pointing out that 800*480 25fps graphics are possible (and lower resolutions have even higher framerates) and that liqbase allows you to see the performance at various resolutions easily.