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From: ken@argus.UUCP (Kenneth Ng)
Newsgroups: comp.arch
Subject: Re: The 360 was a design landmark  (360 vs vax)
Message-ID: <1027@argus.UUCP>
Date: Mon, 31-Aug-87 14:02:22 EDT
Article-I.D.: argus.1027
Posted: Mon Aug 31 14:02:22 1987
Date-Received: Fri, 4-Sep-87 06:49:20 EDT
References: <855@tjalk.cs.vu.nl> <2683@hoptoad.uucp> <916@haddock.ISC.COM> <26623@sun.uucp>
Organization: NJ Instit. of Tech: TEIES Project
Lines: 21

In article <26623@sun.uucp>, petolino%joe@Sun.COM (Joe Petolino) writes:
> * The architecture does not acknowledge the existence of caches.  There are
>   no restrictions on storing into instruction words, no restrictions on
>   virtual address mappings, no separation of code and data pages.  All these
>   things conspire to make cache consistency a true headache.

Look up Discontigious Shared Segments under VM.  This forces program
code into a read only status.  It also permits several machines to share
the same copy of programs, providing a  major boost in performance.

> One final word about the ASCII vs EBCDIC debate.  You can enter ANY of the
> 128 ASCII codes from a standard ASCII keyboard. 

Provided you don't have a terminal server or something doing funny things
to certain characters like control-q, control-s, delete, control-c,
control-d, control-x, control-p, and null.


Kenneth Ng: Post office: NJIT - CCCC, Newark New Jersey  07102
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