Path: news.eternal-september.org!eternal-september.org!feeder3.eternal-september.org!i2pn.org!i2pn2.org!.POSTED!not-for-mail From: mitchalsup@aol.com (MitchAlsup1) Newsgroups: comp.arch Subject: Re: Why VAX Was the Ultimate CISC and Not RISC Date: Wed, 12 Mar 2025 00:37:53 +0000 Organization: Rocksolid Light Message-ID: <2730e60380057925095119c1b00366f8@www.novabbs.org> References: <5pkg9l-kipt.ln1@msc27.me.uk> <2025Mar3.174417@mips.complang.tuwien.ac.at> <2025Mar4.110420@mips.complang.tuwien.ac.at> <2025Mar5.083636@mips.complang.tuwien.ac.at> <9371fe9be75cdd606c876f539e1d2d78@www.novabbs.org> <0da86de26bac1912b190793512255aa4@www.novabbs.org> <5e696219dedf30d0095dfd7671a4c87f@www.novabbs.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Info: i2pn2.org; logging-data="3956677"; mail-complaints-to="usenet@i2pn2.org"; posting-account="o5SwNDfMfYu6Mv4wwLiW6e/jbA93UAdzFodw5PEa6eU"; User-Agent: Rocksolid Light X-Rslight-Posting-User: cb29269328a20fe5719ed6a1c397e21f651bda71 X-Spam-Checker-Version: SpamAssassin 4.0.0 X-Rslight-Site: $2y$10$fFvUbFhX189UCiuas8fjUe72nXuZpQotvb0JgjJmKpSiBnLg2vkca On Tue, 11 Mar 2025 19:07:08 +0000, moi wrote: > On 11/03/2025 18:15, Stephen Fuld wrote: > >> >> I wonder if the different preferences is at least partially due to >> whether the person has a hardware or a software background?  The idea is >> that when hardware guys see the instruction, they think in terms of >> register ports (read versus write), what is required of the memory >> system (somewhat different for loads versus stores), etc.  However >> software guys think of a language construct, e.g. X = Y, which is >> logically a move.  I don't know if this is right, but I think it is >> interesting. > > No, it is logically a copy. But does it copy X into Y or copy Y into X ??