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- From: davidsen@ariel.crd.GE.COM (william E Davidsen)
- Newsgroups: comp.arch
- Subject: Re: What's in a name?
- Message-ID: <1992Jul24.170249.26032@crd.ge.com>
- Date: 24 Jul 92 17:02:49 GMT
- References: <1992Jul16.005016.25778@microsoft.com> <l6bu58INN4d1@spim.mips.com> <1992Jul17.220112.20995@microsoft.com> <1992Jul20.092822.7666@spool.cs.wisc.edu> <1992Jul21.040216.13502@primerd.prime.com>
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- Reply-To: davidsen@crd.ge.com (bill davidsen)
- Organization: GE Corporate R&D Center, Schenectady NY
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-
- In article <1992Jul21.040216.13502@primerd.prime.com>, danw@hobbes.prime.com (Dan Westerberg) writes:
-
- | If we were to say to our customers that their software would no longer be
- | compatible with a new machine, we would quickly lose our installed customer
- | base. At that time, it would make sense for a customer to begin investigating
- | the benefits/tradeoffs associated with switching operations to an alternative
- | hardware platform (be it another proprietary system or a Unix system).
-
- Dan makes a great point here, backward compatibility is only an issue
- if you are running proprietary software. For the person who has source
- to his software, compatibility within an o/s (like UNIX) means
- recompilation. To someone who is running software without source (most
- commercial packages), the cost of changing processors is far higher. The
- cost of upgrading the o/s may be pretty high, too.
-
- Backward compatibility is very much a customer issue. As long as the
- cost of the total system hardware and software is lower through backward
- compatibility, the customer will want it.
-
- And to the extent that this affects purchasing decisions and forces
- processors to comform to user's wishes, it's an architectural issue.
- Perhaps we've beaten it to death, though.
- --
- bill davidsen, GE Corp. R&D Center; Box 8; Schenectady NY 12345
- It never ceases to amaze me that otherwise rational people, able to
- understand calculus, compound interest, and the income tax form, can
- continue to believe that poker is a game of chance.
-