Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: Lawrence D'Oliveiro 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: References: <2025Mar1.125817@mips.complang.tuwien.ac.at> <2025Mar1.232526@mips.complang.tuwien.ac.at> <2025Mar2.234011@mips.complang.tuwien.ac.at> <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> 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