Re: Any new instructions in a i486?

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Article #10958

#10958

From: Jay Finger
Date: Tue, 15 Dec 1992 15:54

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In article <1992Dec15.042513.23969@gandalf.ca> dperks@gandalf.ca (Dave Perks) writes:
>Is it also possible that since the Intel 486 supports supervisor-mode write
>protection, it is is used to allow something like copy-on-write?  If NeXT Step
>was designed to use this then the kernel would require fairly major changes.

Yep, NeXTstep (and maybe Mach in general, somebody correct me if I'm wrong)
uses copy-on-write all over the place.  The programmers' references
mention copy-on-write in many places (at least the 2.x documentation does,
but that's for a 680[34]0).

-- 
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Jay Finger - finger@convex.com        | Convex Computer Corp
CONVEX System Integration and Support | 3000 Waterview Parkway
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Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!uwm.edu!linac!convex!finger
From: finger@convex.com (Jay Finger)
Subject: Re: Any new instructions in a i486?
Message-ID: <1992Dec15.155425.25217@convex.com>
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References: <edm.724366309@wrs.com> <1992Dec15.014650.24209@grebyn.com> <1992Dec15.042513.23969@gandalf.ca>
Date: Tue, 15 Dec 1992 15:54:25 GMT
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