Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!samsung!umich!terminator!home.merit.edu!jgs
From: jgs@home.merit.edu (John Scudder)
Newsgroups: comp.sys.mac.misc
Subject: Re: Mac Vs. Windows? (sorry)
Message-ID: <1991Jun5.164421.653@terminator.cc.umich.edu>
Date: 5 Jun 91 16:44:21 GMT
References: <674648116.0@blkcat.FidoNet> <4799@gmdzi.gmd.de> <1991May29.200007.9448@vlsisj.uucp>
Sender: usenet@terminator.cc.umich.edu (usenet news)
Organization: Merit Network, Inc.
Lines: 37

In article <1991May29.200007.9448@vlsisj.uucp> seiler@vlsisj.uucp (%) writes:
>In article <4799@gmdzi.gmd.de>, strobl@gmdzi.gmd.de (Wolfgang Strobl) writes:
>|> Charlie.Mingo@p4218.f421.n109.z1.FidoNet.Org (Charlie Mingo) writes:
>|> 
>|> >mariusk@Lise.Unit.NO (Marius Kjeldahl) writes:
>|> 
>|> >MK> 1. Usually RAM is faster than ROM, thats why they incorporate things
>like 
>|> >MK> shadowram and so on.
>|> 
>|> >     RAM may be slightly faster than ROM in the MS-DOS world, but on Macs
>the 
>|> >opposite is true. ...
>|> 
>|> How that? What kind of ROMs are used in Macs?
>
>I am surprised that RAM is faster than ROM in the IBM clone world.  What type of
>ROM's do IBM clones use?  The types are:

[ lots of good stuff about ROMs deleted ]

>Bruce Seiler
>seiler@compass-da.com
>Disclaimer: Just because my parent company sells ROM's amd other IC's to Apple
>        and PC chip sets to IBM doesn't PROVE I know what I'm talking about.

Perhaps a contributing factor to this "RAM is faster than ROM" myth is
the practice of some Plus and SE accelerators of copying the ROMs into
accelerator RAM.  The RAM is presumably faster than the ROMs in this
case since it sits on a 32-bit bus instead of a 16-bit bus as the ROMs
do.

--John
-- 

** John Scudder ** Merit/NSFNET ** jgs@merit.edu ** no amusing quote **
**            Disclaimer:  I speak for myself, not Merit.            **