Path: utzoo!attcan!uunet!tank!ux1.cso.uiuc.edu!uwm.edu!cs.utexas.edu!news-server.csri.toronto.edu!utgpu!watserv1!watcgl!jvkelley
From: jvkelley@watcgl.waterloo.edu (Jeff Kelley)
Newsgroups: comp.sys.m68k
Subject: Re: 68882 Exception Handling
Keywords: 68882, exceptions, floating point
Message-ID: <13789@watcgl.waterloo.edu>
Date: 14 Mar 90 18:31:52 GMT
References: <1641@cernvax.UUCP> <68@demott.COM>
Reply-To: jvkelley@watcgl.waterloo.edu (Jeff Kelley)
Distribution: comp
Organization: U. of Waterloo, Ontario
Lines: 15

In article <68@demott.COM> kdq@demott.COM (Kevin D. Quitt) writes:
>
>    You must also use FSAVE/FRESTORE if, as a result of your activity in
>the interrupt routine, a different process will be running than the one
>when you entered. 

Is this still the case if the "different process" will not be using
the fp coprocessor?  That is, if we assume the operating system knows
which processes will use the coprocessor and which will not, is it
possible to perform an FSAVE/FRESTORE only when context switches
occur (directly or indirectly) between processes using the coprocessor?

--
Jeff Kelley    National Research Council of Canada, Ottawa
   uunet!watmath!watcgl!jvkelley  	tel:   (613) 990-5924