Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!uunet!world!boris
From: boris@world.std.com (Boris Levitin)
Newsgroups: comp.sys.mac.misc
Subject: Re: Mac IIsi and the "Coprocessor not installed" Error
Message-ID: <1990Dec19.004209.16124@world.std.com>
Date: 19 Dec 90 00:42:09 GMT
References: <581@caslon.cs.arizona.edu> <obNE2TW00WBK01jpdO@andrew.cmu.edu>
Organization: The World @ Software Tool & Die
Lines: 15

gd1a+@andrew.cmu.edu (Glen M. Devries) writes:

>PseudoFPU totally eliminates the "coprecessor not installed" error, with
>a tremendous sacrifice in speed. It's about box states that using
>PseudoFPU is 100 times slower than a 68881, which is in turn slower than
>the 68882 coprocessor on Apple's adaptor board. As an si owner, I have
>been using PseudoFPU temporarily. Once third party companies show more
>si expansion products, I will definitely buy a real coprocessor of some
>sort.
>                                                -Glen

Check out PSI Integration's adaptors.  An 030 PDS one WITH the FPU installed
is $100 (educational) while a model which also has a slot for PSI's Cache-It
$300 (ed) RAM cache costs $135 (ed) or $199 (non-ed).  PSI is at
(800)622-1722 (my only relationship with the company is as a client).