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- Newsgroups: comp.sys.intel
- Path: sparky!uunet!cs.utexas.edu!news.uta.edu!utarlg.uta.edu!b645zjx
- From: b645zjx@utarlg.uta.edu (STEPHEN HUFNAGEL)
- Subject: Re: Can 16MHz 80387 be installed in a 33MHz 80386 system?
- Message-ID: <23DEC199201000791@utarlg.uta.edu>
- News-Software: VAX/VMS VNEWS 1.41
- Sender: news@utagraph.uta.edu (USENET News System)
- Nntp-Posting-Host: utarlg.uta.edu
- Organization: The University of Texas at Arlington
- Date: Wed, 23 Dec 1992 07:00:00 GMT
- Lines: 15
-
- >: > I have been told that you can install a 16MHz '387DX in a coprocessor
- >: > socket to work with a 33MHz '386DX and it will work ok (running Math
- >: > instructions at the 16MHz rate). I am not convinced. Has anyone done
- >: > this? How does it work? Are their any jumpers that must be set?
-
- This will only work if the systems mother board is designed to do it.
- I had a 20 MHz 386 with a 16 MHz 387 socket (at the time there was no 20 Mhz
- 387) about four years ago, but the 387 socket had its own 16 MHz clock.
-
- Unlike the main processors you must NEVER run a 80x87 faster than the rated
- speed.
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