Article View: comp.arch
Article #20347Re: Intel/MIPS Dhrystone ratio
From: Brian bcase Case
Date: Thu, 16 Mar 1989 19:20
Date: Thu, 16 Mar 1989 19:20
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1592 bytes
>RISC is indeed a technology window, driven largely by the amount of >stuff you can fit in a chip. Look at what is being added now that you >can fit more than a simple CPU core in a chip: > > Floating Point RISCs can have floating point; floating-point is not CISCy. > 29000 null-terminated-string handling instructions There's only one, and it is *QUITE* simple. Even if it shouldn't be there, this is does not support what Nick says. > Choice of endian-ness This adds about 2 gates to the design. > Caches; in fact with extremely complex, multi-mode capabilities ??? This might have some effect on the instruction set, but the effect should not be to make the basic instructions go slow. > Fully associative address translation caches This is architecturally neutral. > Harvard architecture This is simply required for performance, regardless of the instruction set. > Multiprocessor capability I don't see how adding multiprocessor capabilities makes a RISC into a CISC. None of this stuff is inconsistent with RISC. These are not CISCy things. If you are going to complain, make your complaints valid.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!portal!cup.portal.com!bcase From: bcase@cup.portal.com (Brian bcase Case) Newsgroups: comp.arch Subject: Re: Intel/MIPS Dhrystone ratio Message-ID: <15901@cup.portal.com> Date: 16 Mar 89 19:20:32 GMT References: <1552@vicom.COM> <15690@cup.portal.com> <1562@vicom.COM> <37196@bbn.COM> Organization: The Portal System (TM) Lines: 25