Newsgroups: comp.sys.ibm.pc
Path: utzoo!utgpu!cunews!bcars8!bnrgate!bigsur!bcars53!mussar
From: mussar@bcars53.uucp (G. Mussar)
Subject: Re: 8087 Coprocessor
Message-ID: <1990Jul17.172422.161@bigsur.uucp>
Sender: news@bigsur.uucp (Usenet)
Organization: Bell-Northern Research, Ottawa, Canada
References: <1990Jul11.172043.525@bigsur.uucp> <673@mtune.ATT.COM>
Date: Tue, 17 Jul 90 17:24:22 GMT

In article <673@mtune.ATT.COM> klh@mtune.ATT.COM (Ken Hinds) writes:
>Well, I have a dual speed 8088 micro processor in my Leading Edge 
>Model D and I have added an 8087 math coprocessore but, it is listed
>as an 8087-2  which implies dual speed... Sorry I don't recall the
>manufacturer but, I'm sure you could find it if you ask for it specifically.
>
>==============================================================
>Kenneth Hinds         
>AT&T DSG Lincroft,NJ 
>UUCP:  ...!att!mtune!klh                 

Sorry, close, but no cigar. An 8087-2 does not signify a dual speed part. The
suffix indicates the maximum rated speed of the part. Of course you can run 
them slower than maximum rated speed if you wish.

   8087      -  5 MHz
   8087-2    -  8 MHz
   8087-1    - 10 MHz

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