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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Lawrence D'Oliveiro <ldo@nz.invalid> Newsgroups: comp.arch Subject: Re: Byte Addressability And Beyond Date: Wed, 1 May 2024 06:32:17 -0000 (UTC) Organization: A noiseless patient Spider Lines: 13 Message-ID: <v0snlh$30rmc$2@dont-email.me> References: <v0s17o$2okf4$2@dont-email.me> <v0s744$l3v$1@gal.iecc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Wed, 01 May 2024 08:32:17 +0200 (CEST) Injection-Info: dont-email.me; posting-host="ad302c900c5acc5104cba5a9dbf60c1f"; logging-data="3174092"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19pBo12PdZGhGPH/IBQ2gtW" User-Agent: Pan/0.155 (Kherson; fc5a80b8) Cancel-Lock: sha1:NL3wcRUbDsr5grCdnzhxT8taopE= Bytes: 1467 On Wed, 1 May 2024 01:49:56 -0000 (UTC), John Levine wrote: > Until the PDP-11, all byte addressed machines were bigendian. Despite a > lot of looking, I have never found an explanation of why DEC made the > PDP-11 littlendian. As I previously mentioned, little-endian just makes more sense. Unfortunately, when their Fortran compiler implemented 32-bit integers (in software), they got the words the wrong way round. The VAX was like a 32-bit extension of the PDP-11, and it was consistently little-endian everywhere.