Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!uwm.edu!rpi!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!emory!ogicse!littlei!omepd!omews35!colwell
From: colwell@omews35.intel.com (Robert Colwell)
Newsgroups: comp.arch
Subject: Re: Plessy 250
Message-ID: <6199@omepd.UUCP>
Date: 26 Nov 90 16:20:57 GMT
References: <183201@<1990Nov15> <3300217@m.cs.uiuc.edu>
Sender: news@omepd.UUCP
Reply-To: colwell@omews35.UUCP (Robert Colwell)
Organization: Intel Corp., Hillsboro, Oregon
Lines: 21

In article <3300217@m.cs.uiuc.edu> gillies@m.cs.uiuc.edu writes:
>
>"Capability-Based Computer Systems", by Henry Levy, Digital Press,
>1984.
>
>This book has a chapter on the protection scheme in Plessy/250.  This
>is a very good book if you're interested in capabilities -- it is the
>only source I've seen that fully explains the implementation of
>several capability-based systems (most conference papers have holes
>and gaps in the explanations).

It's also a good example of the "classic" computer architecture book, which
covers mechanisms and bit positions with absolutely no regard to how
expensive these mechanisms will be to implement nor what their performance
implications would be.  I think it would be a good exercise to read this
book and then Patterson/Hennessy; quite a contrast in attitudes and styles.

Bob Colwell  mipon2!colwell@intel.com  503-696-4550
Intel Corp.  JF1-19
5200 NE Elam Young Parkway
Hillsboro, Oregon 97124