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From: henry@utzoo.UUCP (Henry Spencer)
Newsgroups: net.micro.68k,net.micro
Subject: Re: MC68881 Floating-point performance times
Message-ID: <4773@utzoo.UUCP>
Date: Wed, 12-Dec-84 15:08:51 EST
Article-I.D.: utzoo.4773
Posted: Wed Dec 12 15:08:51 1984
Date-Received: Wed, 12-Dec-84 15:08:51 EST
References: <263@oakhill.UUCP>
Organization: U of Toronto Zoology
Lines: 22

> ...  Anyone having times for transcendentals (including square
> root) for the National NS32081 would you please post them to me?
> If there is enough interest in comparing both chips, I will post
> a timing contrast on the net.

Would anyone outside Motorola who has actually seen a 68881 please post
word to that effect?  Many people have seen 32081s (well, 16081s before
the Great Renumbering).

For that matter, I note that the 68881 timings appear to have been
calculated, rather than measured -- the line-eater bug got the early part
of the intro, so I'm not certain -- and thus should be taken with a large
bag of salt.  Real Soon Now chips *ALWAYS* look better than ones that are
already available...

I don't doubt that the 68881 is going to be a superior chip, especially
since it has full IEEE functionality instead of the drastic subset that
the National chip implements.  I just wish Motorola would stop talking
about it and start selling it.
-- 
				Henry Spencer @ U of Toronto Zoology
				{allegra,ihnp4,linus,decvax}!utzoo!henry