Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!haven!sylvester!brett
From: brett@sylvester (Brett S Bourbin)
Newsgroups: comp.sys.atari.st
Subject: Re: ST Resolution vs. Amiga Resolution
Message-ID: <3068@haven.umd.edu>
Date: 31 Jan 89 19:50:08 GMT
References: <8901261651.AA12611@ucbvax.Berkeley.EDU> <2141@brahma.cs.hw.ac.uk>
Sender: news@haven.umd.edu
Reply-To: brett@sylvester (Brett S Bourbin)
Organization: University of Maryland, College Park
Lines: 23

In article <2141@brahma.cs.hw.ac.uk> neil@cs.hw.ac.uk (Neil Forsyth) writes:
>In article <8901261651.AA12611@ucbvax.Berkeley.EDU> WILLIAMS@UCF1VM.BITNET (Erik Williams) writes:
>>
>>The ST's maximum resolution in color is 640x320 with a maximum color pallette
>>of 4096 colors in Medium res and 16 million colors in low resolution (mind you
>>, you have to do some major tweaking with TOS to do this).  High resolution
>>monochrome is 640x480, and is paper white with black.

Ok, I *guess* I can understand 640x320 and 640x480 resolutions by extending
the screen lines to take up the top and bottom of the display.  What I don't
understand is how you can get 4096 and 16M colors out of a machine that
has 3 bit RGB registers?  I can only get 512 MAXIMUM out of the ST, and that
is with horizontal interrupts.  Also, since when can the ST hardware handle
more than 4 bitplanes?


--Brett S Bourbin
 __  __   _  __  _  Instructional Computing Programs -- Univ of Maryland
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