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- From: lindsay+@cs.cmu.edu (Donald Lindsay)
- Newsgroups: comp.arch
- Subject: Re: IBM AS/400 is the world's slowest computer
- Message-ID: <BzsIFK.EMF.2@cs.cmu.edu>
- Date: 25 Dec 92 00:52:31 GMT
- Article-I.D.: cs.BzsIFK.EMF.2
- References: <1992Dec22.204313.29024@rchland.ibm.com> <Bzs3zn.43H.2@cs.cmu.edu> <1992Dec24.203452.22045@beaver.cs.washington.edu>
- Sender: news@cs.cmu.edu (Usenet News System)
- Organization: School of Computer Science, Carnegie Mellon
- Lines: 21
- Nntp-Posting-Host: gandalf.cs.cmu.edu
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- kolding@cs.washington.edu (Eric Koldinger) writes:
- >The AS/400 uses a tagged memory-system and tagged registers to
- >protect capabilities (or pointers, as they call them). There are
- >also a number of operations that only take place on capabilities.
- >This makes it rather unlikely that they'd use a stock micro-processor
- >from the workstation group.
-
- I don't think that RPG programmers deal with capabilities, so, the
- stock microprocessor needs only a stock RPG.
-
- What other languages are of importance on the AS/400? What is the OS
- written in, and are capabilities actually explicit at the source
- level?
-
- My experience with software-based capabilites has been positive, so
- it's not clear to me, offhand, that a stock RS/6000 is out of the
- question.
-
-
- --
- Don D.C.Lindsay Carnegie Mellon Computer Science
-