On Sun, Apr 24, 2011 at 03:13:35AM -0300, Werner Almesberger wrote: > This is what it does: > > http://downloads.qi-hardware.com/people/werner/ubb/vga/qvga-out.ogg > http://downloads.qi-hardware.com/people/werner/ubb/vga/ubb-vga-screenshot.jpg > > (This shows the Jlime desktop. The friendly gentleman in the background > image may be the Muffinman.) > > This is what it looks like: > > http://downloads.qi-hardware.com/people/werner/ubb/vga/ubb-vga-top.jpg > http://downloads.qi-hardware.com/people/werner/ubb/vga/ubb-vga-conn.jpg > http://downloads.qi-hardware.com/people/werner/ubb/vga/ubb-vga-bottom.jpg > > And here is how it works: > > http://projects.qi-hardware.com/index.php/p/ben-blinkenlights/source/tree/master/ubb-vga/ > > The "VGA" is if course a li^W^Wmarketing. The horizontal resolution is > nowhere near real VGA (it's equivalent to 160-320 pixels), but the > timing is almost correct. > > Color depth is one bit per color. I used all but one signal, so one > could add one more bit to, say, green. One could probably free another > bit by multiplexing HSync and VSync. > > The program does a number of evil things, including the disabling of > interrupts and the display refresh, to gain memory bandwidth and to > have more predictable timing.
Very sweet indeed :) > > - Werner > > _______________________________________________ > Qi Hardware Discussion List > Mail to list (members only): [email protected] > Subscribe or Unsubscribe: > http://lists.en.qi-hardware.com/mailman/listinfo/discussion _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
