Excuse me for ambiguous terminology.  It's historical to use various terms
interchangeably.

> > I have one more doubt, what is the term raster console, could you give me 
> > some information.

framebuffer
    == linear display memory
    == raster console
    == bitmap display console

Any of them solely means that it's distinct from PC display technology.

Toru Nishimura/ALKYL Technology