JLS1:
Hi Stimmer800x600 is great work many thanks
Kamil
P.S. is possible 640x480 with some colors ?
I don't think 640x480 with 2 bits per pixel will be possible unfortunately. 640x480x3bpp is definitely impossible as there is not enough memory. With 2bpp there is enough memory but not enough speed. I got 640x480 working by using the SPI hardware but there is only one fast SPI channel on the Due.
What might be possible is a 640x480 overlay on a much lower resolution background. I've attached a screenshot of one of my experiments, this is 640x480 over an 80x60 grid of background colours (although the timing is all wrong at the moment). This isn't so useful for graphics demos, but could be good if I added text and fonts because it would give some control over text background colour. But I don't know if I can get it working well enough yet.
