Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!haven!mimsy!tove.umd.edu!folta
From: folta@tove.umd.edu (Wayne Folta)
Newsgroups: comp.sys.mac.hardware
Subject: IIci + 8Mb != more speed
Summary: Wasn't more memory in Bank B supposed to help?
Message-ID: <22499@mimsy.umd.edu>
Date: 13 Feb 90 20:32:53 GMT
Sender: news@mimsy.umd.edu
Reply-To: folta@tove.umd.edu (Wayne Folta)
Distribution: usa
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 14

We just installed 4Mb of memory in Bank B of our IIci, resulting in an 8Mb
machine.  The problem is that I was convinced by the Mac magazines that
adding memory in Bank B would decrease video RAM contention and thus speed
the IIci up.  I have found no such speed increase.

A (very) simple test: a recursive factorial function in LISP, yields the
same run times with 1-bit and 8-bit color as when we only had 4Mb.

So what's up?  Was the Bank B magic a lie?  Is my test too simple?  Was
the speedup only for graphics-intensive programs?
--


Wayne Folta          (folta@cs.umd.edu  128.8.128.8)