home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!mcsun!uknet!gdt!aber!aberfa!pcg
- From: pcg@aber.ac.uk (Piercarlo Grandi)
- Newsgroups: comp.arch
- Subject: Re: Computer architects forced to change careers. NOT!
- Message-ID: <PCG.92Sep14145823@aberdb.aber.ac.uk>
- Date: 14 Sep 92 14:58:23 GMT
- References: <1992Sep9.061933.28304@news.eng.convex.com>
- <1992Sep9.213319.7894@fasttech.uucp> <AKI.92Sep10131943@akix.UUCP>
- Sender: news@aber.ac.uk (USENET news service)
- Reply-To: pcg@aber.ac.uk (Piercarlo Grandi)
- Organization: Prifysgol Cymru, Aberystwyth
- Lines: 77
- In-Reply-To: aki@akix.UUCP's message of 10 Sep 92 21: 19:43 GMT
- Nntp-Posting-Host: aberdb
-
- On 10 Sep 92 21:19:43 GMT, aki@akix.UUCP (Aki Atoji) said:
-
- aki> Having worked with different CPU's of varying successes in market
- aki> place (i.e. NS32K, x86, 29K and 960), I would have to say that the
- aki> so called 'technological superiority' of an architecture is often
- aki> *not* the only single important item for more design wins.
-
- Applause for common sense! About the only 'superior' architecture that I
- know of that has 'won' is the Acorn ARM, which is one of the better
- designed RISCs _and_ is probably by far the most widely sold under some
- metric in some market.
-
- aki> There really are numerous factors in getting design wins and thus
- aki> more market acceptance, such as pricing, availability, marketing,
- aki> product positioning in market place, tools (compilers, emulators,
- aki> etc.), how many freebies (i.e. compilers, eval board, eval chips)
- aki> the salescreature will give to you, etc. etc (free lunches would
- aki> count too, hint, hint :).
-
- Case in point the ARM: the fact that it is well designed has had nothing
- to do with its being probably, in some sense, the most popular RISC chip
- ever. The fact that it is used in cheap home computers that are sold in
- vast consumer number probably has got more to do with it.
-
- Simplistic reasoning about the 432, the 960, or other designs, and the
- careers of their designers seem to me less than interesting.
-
- Incidentally, on the 960: fairly credible rumour has it that Intel
- deliberately throttled it both technically and marketing wise to avoid
- jeopardizing even incidentally the sales of far more profitable x86
- chips. And that it was kept going at all as insurance for the future,
- and as a way to let frustated designers let off steam.
-
- aki> [ ... more sensible and not simplistic opinions omitted ... ]
-
- aki> When 29K first came out, with it's MMU and three bus design, I'm
- aki> sure AMD's intent behind the design of the architecture was not to
- aki> be one of the most dominant RISC designs in the *embedded* market,
- aki> which it is now.
-
- And surely the Intel designers that added a sophisticated MMU to the 286
- and sophisticated paging the the 386 hoped it would not continue to run
- MSDOS forever. Many times I think that certain features in certain chips
- are put in more because of designer's pride then of any estimate of
- market demand.
-
- aki> But then again, the number of 29K shipped is likely far less than
- aki> the 68K derivatives shipped (someone have actual numbers?).
-
- These are not so important, because the count always depends on how you
- segment things by time/market. On the other hand, as you probably
- obliquely implied above, AMD claims that the number of 29k shipped for
- embedded applications dwarfs that of all workstation RISC chips.
-
- aki> However, these numbers are simply dwarfed by the number of 8051
- aki> derivatives shipped world wide.
-
- Isn't it the case that the 4004/8008 are still shipped in substantial
- numbers? A few years ago it was still true...
-
- Ah, if only success/failure were so easy to assess! It is well known
- that the AS/400 architecture/series is roaringly successful. It is less
- know that initial IBM plans targeted it for a role in which it had very
- disappointing sales, and it sold very well, taking IBM by surprise, for
- a role that they had not really positioned it for. So, was it as failure
- or a success?
-
- Maybe it was a marketing failure ("fire the architects and the
- marketdroids for getting the positioning totally wrong") and a business
- success ("rehire them because they were lucky").
-
- Napoleon used to say that the first quality he sought in his generals
- was luck, and competence was a far distant second...
- --
- Piercarlo Grandi | JNET: pcg@uk.ac.aber
- Dept of CS, University of Wales | UUCP: ...!aber-cs!pcg
- Penglais, Aberystwyth SY23 3BZ, UK | INET: pcg@aber.ac.uk
-