From: Johan Karlberg <wlfshmn@failure.ml.org>
  To  : ggi-develop@eskimo.com
  Date: Mon, 3 Aug 1998 21:51:15 +0200 (CEST)

Re: Paged modes...

On Mon, 3 Aug 1998 becka@rz.uni-duesseldorf.de wrote:

> 
> > Could anyone explain to me the difference between these definces in struct
> > kgi_mmio_mapping
> > 
> > #define MAP_LINEAR_LINEAR       1
> > #define MAP_LINEAR_PAGED        2
> > #define MAP_PAGED_LINEAR        3
> > #define MAP_PAGED_PAGED         4
> > 
> > I know of linerar framebuffer, with the entire framebuffer in a long
> > line... and paged framebuffers, manipulated by moving a window, if my
> > understanding is correct, wich it very well might not be.. but what are
> > the others?
> 
> There are two ways a program expects framebuffers to look, and two ways
> how they are physically realized.
> 
> The above definitions show all combinations.
> 
> This hasn't been added back to KGI from scrdrv (though I think it should
> for easy porting of sick old apps).
> 
> Scrdrv had an additional mmap area that showed a 64k paged view of the
> framebuffer (regardless of the underlying real mechanism).
> 
Does kgi allow cards with non-linear mmio framebuffers? And if so, is
there example code around?

Johan