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From: page@ulowell.UUCP
Newsgroups: comp.sys.amiga
Subject: Re: Compute!'s goof + more info on A2000
Message-ID: <1038@ulowell.cs.ulowell.edu>
Date: Sat, 14-Feb-87 13:45:14 EST
Article-I.D.: ulowell.1038
Posted: Sat Feb 14 13:45:14 1987
Date-Received: Sun, 15-Feb-87 05:44:48 EST
References: <1028@ulowell.cs.ulowell.edu> <510@linus.UUCP>
Reply-To: page@ulowell.cs.ulowell.edu (Bob Page)
Distribution: world
Organization: University of Lowell
Lines: 23

sdl@linus.UUCP (Steven D. Litvintchouk) wrote in article <510@linus.UUCP>:
>>  Can you say real-time digitizer?  Custom (1024x1024x24) Graphics?
>>  Upgraded Denise & Paula?  Sure.  I knew you could.
>
>How could better graphics be accessible from software, since the
>highest-res graphics mode defined for the Amiga is 640 x 400?
>Wouldn't AmigaDOS, Intuition, etc., have to be changed as well?

They don't have the restrictions, the hardware does/did.  Note there's
a PAL Amiga - it runs the same software, only the custom chips are
different.

You'll notice that the structures for graphics, intuition, layers, etc,
use 8-bit values for lookup tables?  Why, when the chips only support
5 (6 if you count H&M) planes?  Because future chips may support more!

Applications software may not work if developers did naughty things like
put information in those upper two bits (shades of 68000 -> 68020!),
but I doubt you'll see many (if any!) like that.

..Bob
-- 
Bob Page,  U of Lowell CS Dept.      ulowell!page,  page@ulowell.CSNET