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- Path: nntphost.dur.ac.uk!nntp
- Newsgroups: comp.sys.amiga.advocacy,comp.sys.amiga.misc
- Subject: Re: Walker vs. the $999 7200/75 w/4xCD!
- Message-ID: <4jrdpv$nbe@mercury.dur.ac.uk>
- From: M D Sergeant <M.D.Sergeant@durham.ac.uk>
- Date: 2 Apr 1996 14:32:31 GMT
- References: <eraugust-2803960910170001@sbdsk0838.sbrc.hac.com>
- <1350.6662T1401T2752@mbox.vol.it> <4jpcr3$6ni@valour.pem.cam.ac.uk>
- Organization: University of Durham, Durham, UK
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-
- cbrown@armltd.co.uk (Chris Brown) wrote:
- >In article <1350.6662T1401T2752@mbox.vol.it>,
- >Fabio Bizzetti <bizzetti@mbox.vol.it> wrote:
- >>
- >>1-2 years and RISC will return in the garage: where it _always_ has
- >>been.
- >
- >Your assertion is silly.
- Really silly.
-
- >>Untill someone makes 5ns main ram (!) and RISC's can go out again, untill
- >>we get BiCMOS technology for CPU's and at 700Mhz and 20 millions of transistors
- >>CISC wins again in any case.
- >
- >Huh? You are aware that one of the purest RISC designs around today is
- >the DEC Alpha, right? It's also the fastest commercially available
- >microprocessor by a *long* way.
- Right again.
-
- >>Sorry, but the future is for CISC processors (as programming structure) with
- >>as many parts as possible implemented in RISC architecture.
- >
- >This is bad because putting the translation logic on the front to
- >RISCify the instruction stream will slow the processor down,
- >complicate its design and lengthen the pipeline (P6 has something
- >crazy like 14 pipeline stages. Missing a branch is pretty catastrophic
- >for it).
- Actually the future is probably in VLIW processors that rely on the compiler to
- produce long words with multiple instructions, so that there needs be no
- piplining prediction phase slowing everything down. HP are working on these for
- their PA8000. This technology was invented (sort of) by Turing in 1946. See the
- april issue of Byte for more information.
-
- Matt.
-
- --
- m.d.sergeant@dur.ac.uk Computer Science Project:
- Matthew Sergeant GUI for LOLITA
- University of Durham (And wow, is it ever gooey)
-
-