Path: utzoo!mnetor!uunet!husc6!cmcl2!nrl-cmf!ames!pasteur!ucbvax!hplabs!pyramid!voder!apple!bcase From: bcase@apple.UUCP (Brian Case) Newsgroups: comp.arch Subject: Re: Intel 432's evolves into a RISC??? Message-ID: <7246@apple.UUCP> Date: 22 Jan 88 18:23:06 GMT References: <243@spar.SPAR.SLB.COM> <2707@omepd> <1071@cpocd2.UUCP> Reply-To: bcase@apple.UUCP (Brian Case) Organization: Apple Computer Inc., Cupertino, USA Lines: 20 In article <1071@cpocd2.UUCP> howard@cpocd2.UUCP (Howard A. Landman) writes: >If anyone sees a photo of the chip, here's an easy way to tell RISC from CISC: >Identify the datapath and RAM (including register file and cache). If they >add up to less than half the chip area, it's a CISC. That's because the rest >is probably all control, and any chip that's more than half control does not >have a simple architecture. > Howard A. Landman Waaait a minute. I'm sure Howard knows what he is talking about and that his point is valid, but it is somewhat badly stated (and I am compelled to clear up the mistatement). There are other uses for chip area than data path, register file, and cache. There are bus controllers and special function units to name two. A very complex bus controller might be necessary, and it might take up significiant area, but its presence doesn't make a CISC. As technology improves, the test as Howard states it will be less and less accurate (I think). BTW, I have recently heard some people from Australia and England pronounce CISC as "kisk." Anyone know if this is the way it really "should" be pronounced. Respond by mail please....