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From: corrie@serss0.fiu.edu (vaalpens)
Newsgroups: comp.sys.mac.hardware
Subject: Re: why larger SIMMS in bank B on IIci ?
Message-ID: <3009@kluge.fiu.edu>
Date: 24 Mar 91 22:14:17 GMT
References: <4140@ac.dal.ca>
Sender: news@kluge.fiu.edu
Organization: Florida International University, Miami
Lines: 34

In article <4140@ac.dal.ca> ireland@ac.dal.ca writes:
>Hi. I just read in the April MacWorld that one ought to put
>the larger capacity SIMMS in bank B on a IIci for maximum
>performance.  I have a 5 meg IIci and haven't yet checked to
>see if I'm following this rule. Could someone explain the
>reasoning behind this.  How much difference in speed is one
>likely to observe?  Thanks,
>
>Keith Conover
>ireland@ac.dal.ca

Keith,
   I remember reading a while back when the IIci-s came out that the reason
for this was two-fold:
   1- when using the built in monitor-card the IIci uses memory in bank A
      which tends to cause slow performance when using only the normal finder
      which places global variables in bank A as well.
   2- Solution:  using multifinder, globals are placed in Bank B, and the
      onboard video-card still uses bank A to store its stuff.  Because of
      the memory management being used, you do not need to install memory
      quite restrictedly as you once had to, so you can decide how much
      memory should be used for the onboard video-card (Bank A),
      and how much is available for applications, globals, etc... (Bank B).

At least that's what I remember about the article.  You may want to look
at MacUser/MacWorld issues around the time the IIci was actually released,
or shortly thereafter.

Corrie
-------
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Cornelius J. van der Merwe   |   Computer Support Specialist
corrie@fiu.edu    (internet) |   UCS, Florida International University
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