title: VGA programming without using interrupt (only registers)
body: <p>I want to develop a VGA graphics driver (for Linux(Ubuntu)) with support for the basic primitives such as putpixel, drawline, fillrect and bitblt. I want to do it in protected mode. 
  I´ve been googling for a week and the following four links are the best I have found:</p>
  
  <p><a href="http://www.brackeen....vga/basics.html" rel="nofollow">http://www.brackeen....vga/basics.html</a>
  http://www.osdever.n...VGA/vga/vga.htm
  <a href="http://bos.asmhacker...sing%20bios.htm" rel="nofollow">http://bos.asmhacker...sing%20bios.htm</a></p>
  
  <p>Unfortunately, the first one uses a BIOS call so I cannot use it. The second link has lots of information on the VGA registers but no examples showing how to make them work together. The third example is a example to switch in 13h mode but i've tried it and nothing happened. Can you guys give me a hint? Thanks in advance!</p>
  
  <p>--Vincenzo</p>