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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: Lawrence D'Oliveiro <ldo@nz.invalid> Newsgroups: comp.arch Subject: Re: Why VAX Was the Ultimate CISC and Not RISC Date: Sun, 9 Mar 2025 02:55:09 -0000 (UTC) Organization: A noiseless patient Spider Lines: 10 Message-ID: <vqivud$e6u3$1@dont-email.me> References: <vpufbv$4qc5$1@dont-email.me> <2025Mar1.125817@mips.complang.tuwien.ac.at> <vpvrn5$2hq0$1@gal.iecc.com> <2025Mar1.232526@mips.complang.tuwien.ac.at> <vq2dfr$2skk$1@gal.iecc.com> <2025Mar2.234011@mips.complang.tuwien.ac.at> <5pkg9l-kipt.ln1@msc27.me.uk> <2025Mar3.174417@mips.complang.tuwien.ac.at> <vq4qav$1dksd$1@dont-email.me> <vq5dm2$1h3mg$5@dont-email.me> <2025Mar4.110420@mips.complang.tuwien.ac.at> <vq829a$232tl$6@dont-email.me> <2025Mar5.083636@mips.complang.tuwien.ac.at> <vqdljd$29f8f$2@paganini.bofh.team> <vqdrh9$3cdrc$1@dont-email.me> <vqek6h$3fro6$1@dont-email.me> <fe70b48cd6fef0aaf89278163d8b6322@www.novabbs.org> <vqfmr4$3npgk$1@dont-email.me> <vqg04o$3p80h$1@dont-email.me> <vqgbao$3rbkh$1@dont-email.me> <9371fe9be75cdd606c876f539e1d2d78@www.novabbs.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Sun, 09 Mar 2025 03:55:10 +0100 (CET) Injection-Info: dont-email.me; posting-host="c313810d5ee9ac2155cf0a81882eea71"; logging-data="465859"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/7eGU8gp3lm5Zma/dH8wjx" User-Agent: Pan/0.162 (Pokrosvk) Cancel-Lock: sha1:/2BZEDt32kY+pY6Opd9ZMgsAgqg= Bytes: 2035 On Sat, 8 Mar 2025 03:28:49 +0000, MitchAlsup1 wrote: > Mc 68020 had instructions to access bit-fields that cross word > boundaries. And, with typical big-endian quirkiness†, the numbering was completely the opposite way round from the single-bit instructions from the earlier members of the 680x0 family. †to put it politely