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1994-07-28
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Newsgroups: alt.games.doom
Path: cdrom.com!barrnet.net!parc!biosci!agate!howland.reston.ans.net!cs.utexas.edu!geraldo.cc.utexas.edu!portal.austin.ibm.com!awdprime.austin.ibm.com!anson
From: anson@austin.ibm.com (Chad Anson)
Subject: Re: Does a 486DX run Doom faster than an SX?
Sender: news@austin.ibm.com (News id)
Message-ID: <CtnMu7.4EIJ@austin.ibm.com>
Date: Thu, 28 Jul 1994 14:27:27 GMT
References: <3181vf$638@usenet.ins.cwru.edu>
Organization: IBM Austin
Lines: 46
In article <3181vf$638@usenet.ins.cwru.edu>,
Thomas Fimiani <ag848@cleveland.Freenet.Edu> wrote:
>
>The 8087 family of math-coprocessors is more than an
>FPU, it is a NDP -- numeric data processor.
>
>*If* Doom makes use of the 8087, it would make a fairly
>noticable difference.
>
>The 8087 does integer & floating point calculations
>automatically, instead of through software emulation
>, which can amount to large differences in speed
>when just looking at the time to calculate (even
>up to 8-10 times faster).
>
>But without it, all *real number* calculation must
>be done through software emulation.
>
>I've got a 387 that I can plug it into a 386-SX-16
>that should be able to run Doom.
>
>I'll let everyone know if there are any speed diffs.
>
>If there are sig. speed diffs, it shows both: that Doom
>uses a math-co. & that having a math-co, even for just
>integer math (if it indeed only uses that), is faster
>with such an apparatus on your computer.
>
>tom
>--
>++ Thomas V. Fimiani ++++++++++++++++++++++++++++++++++++++++++++
>++ CLEVELAND FREENET + "Others called it want of sense, always +
>+++++++ ag848 ++++++++ to rail at what they loved."-Mandeville+
>++++++++++++++++++++++ The Fable of The Bees. +++++++++++++++
Once and for all:
DOOM does not use an FPU (aka. math coprocessor).
It never did, and never will!
-Chad
chadan@ccwf.cc.utexas.edu