math coprocessors

From: Pete Turnbull <>
Date: Mon Apr 6 19:33:37 1998

On Apr 6, 17:15, Max Eskin wrote:
> Subject: Re: math coprocessors
> [Autocad not requiring math coprocessor]
> Well, version 12 for Dos, which is what I have, seems to require it.
> It refuses to start up, quitting with "80x87 required, but not
> present". Whoever said it doesn't, maybe you have a lower version.
> If so, which and what's it like? I would certainly be interested in
> an older version, such a 7 or 8.

Even fairly old versions require a maths copro. Some of my then-colleagues at
Acorn Computers were involved in negotiations with Autodesk in 1987, to get it
ported to the ARM architecture. AD ported Autosketch quite quickly, because it
doesn't need a maths copro, but they refused to port AutoCad, because they
insisted a maths coprocessor was essential (despite the fact that the software
routines available outperformed some contemporary maths processors).

Pete						Peter Turnbull
						Dept. of Computer Science
						University of York
Received on Mon Apr 06 1998 - 19:33:37 BST

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