After a bit of a struggle, I finally got DMA to work well enough that I get a stable image at 1024x768:
http://downloads.qi-hardware.com/people/werner/ubb/vga/ubb-dma-tstimg.jpg Note the absence of the horizontal stretching near the right edge I had before DMA: http://downloads.qi-hardware.com/people/werner/ubb/vga/ubb-vga-1024x768-33Hz.jpg Here's a screenshot of a real-life application, taken on my PC and displayed by my Ben: http://downloads.qi-hardware.com/people/werner/ubb/vga/ubb-dma-web.jpg The steep angle is an attempt to avoid the substantial darkening I get at the top of the screen. Somehow my camera and the monitor seem to be conspiring in the production of this effect ... Full disclosure: only 1024x768 looks good at the moment. 800x600 has a lot of artefacts and 640x480 even locks up the DMA controller, requiring a reboot to fix it. - Werner _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
