From: Geert Uytterhoeven <Geert.Uytterhoeven@cs.kuleuven.ac.be>
  To  : ggi-develop@eskimo.com
  Date: Mon, 31 Aug 1998 20:35:07 +0200 (CEST)

Re: XF68_FBDEV XF86Config help

On Sun, 30 Aug 1998, Sengan Baring-Gould wrote:
> Geert Uytterhoeven wrote:
> > On Thu, 27 Aug 1998, Sengan Baring-Gould wrote:
> > > Cool. Are there some "standard ioctls'" out there? (like the Amiga
> > > has a blitter to rectangle blits and draws must be already supported)
> >
> > The Amiga blitter isn't used at all. It's slow anyway.
> 
> Well... it wasn't on my Amiga 500 (7.14 Mhz 68000 is a _little_ slower)...
> I guess Amigas are somewhat different 9 years later...

Starting with '030, it was faster to run the utility `cpublit'. If `cpublit' is
active, all aligned block copies are done using the CPU. Only `fancy stuff'
(unaligned blits) are left for the blitter.

Since fbcon-{afb,ilbm} don't need unaligned accesses, it doesn't make sense to
use the blitter.

Greetings,

						Geert

--
Geert Uytterhoeven                     Geert.Uytterhoeven@cs.kuleuven.ac.be
Wavelets, Linux/{m68k~Amiga,PPC~CHRP}  http://www.cs.kuleuven.ac.be/~geert/
Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium