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Posting-Version: version B 2.10.1 (Tek) 9/26/83; site vice.UUCP
Path: utzoo!linus!decvax!tektronix!tekchips!vice!angeloh
From: angeloh@vice.UUCP (Angelo Hung)
Newsgroups: net.micro.pc
Subject: 8087 incompatability
Message-ID: <53@vice.UUCP>
Date: Mon, 12-Nov-84 12:36:42 EST
Article-I.D.: vice.53
Posted: Mon Nov 12 12:36:42 1984
Date-Received: Tue, 13-Nov-84 06:49:55 EST
Organization: Tektronix, Beaverton OR
Lines: 9

Recently, I put a 8087-4 on my XT.  I ran through DOS diagnostics
without any problem.  However, a small benchmark (about 10 lines
in basic) showed no sign of improvement in speed.  The benchmark
primarily consists of square root, exponential, and sin/cos.  It
took 400 seconds for w/ and w/o 8087.  Is it because BASIC
interpreter works much slower than those math operations?  Or it
is because 8087 compatability problem?  Or even it is simply a
bad chip?  Does anyone out there experience same sort of problems?
I appreciate it if somebody can give me some suggestions?