PocketMatrix

There are some benchmarks listed here: .

From the numbers it looks like it has a graphics chip that is helping with a number of the GDI ops. The stretchblt isn't being accelerated and is actually much slower than the speed of an iPaq so I would imagine reading/writing to the SRAM onboard the graphics chip via the CPU is slow.

You could verify this quite easily measuring memcpy/memset to the buffer returned by GXBeginDraw.

Let us know what you find out.

I could do that... If I had a e310. That's the problem: I only own a Casio E-125 and a Jornada 720. I don't have access to any other device.

From the benchmark it seems obvious that access to the frame buffer is really slow. Thanks for the info.