Article View: comp.sys.atari.st
Article #26058Re: Emulating Amiga with ST and vice-versa
From: sansom
Date: Fri, 03 Apr 1987 16:16
Date: Fri, 03 Apr 1987 16:16
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1622 bytes
In article <1175@spice.cs.cmu.edu> mjp@spice.cs.cmu.edu (Michael Portuesi) writes:
>As far as emulating the ST with the Amiga, that would be tough as
>well. The hardware for the two machines support displays rather
>differently. The Amiga uses a bit-plane oriented approach, the ST
>uses a linear arrangement...
The ST's display does, in fact, use memory mapped bit-planes. The number of
planes it uses is, of course, dependent on the screen resolution. Low
resolution (320 x 200, 16 colors) uses four bit planes _interleaved_ in
memory (not linear), medium resolution (640 x 200, 4 colors) uses two bit
planes, and high resolution (640 x 400, 2 "colors") uses one bit plane
(which is, in effect, a linear arrangement).
-Rich
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/// Richard E. Sansom TRW Electronics & Defense Sector \\\
\\\ {decvax,ucbvax,ihnp4}!trwrb!sansom Redondo Beach, CA ///
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watnot!watmath!clyde!rutgers!ucla-cs!sdcrdcf!trwrb!sansom From: sansom@trwrb.UUCP Newsgroups: comp.sys.atari.st Subject: Re: Emulating Amiga with ST and vice-versa Message-ID: <1748@trwrb.UUCP> Date: Fri, 3-Apr-87 11:16:46 EST Article-I.D.: trwrb.1748 Posted: Fri Apr 3 11:16:46 1987 Date-Received: Sun, 5-Apr-87 09:52:17 EST References: <1175@spice.cs.cmu.edu> Reply-To: sansom@trwrb.UUCP (Richard Sansom) Organization: TRW EDS, Redondo Beach, CA Lines: 19