From: becka@rz.uni-duesseldorf.de
  To  : ggi-develop@eskimo.com
  Date: Mon, 3 Aug 1998 17:36:03 +0200 (MET DST)

Re: Paged modes...

> 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).

CU, Andy

-- 
Andreas Beck              |  Email :  <Andreas.Beck@ggi-project.org>