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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Michael S <already5chosen@yahoo.com> Newsgroups: comp.arch Subject: Re: Address bits again, Article on new mainframe use Date: Thu, 12 Sep 2024 14:19:25 +0300 Organization: A noiseless patient Spider Lines: 22 Message-ID: <20240912141925.000039f3@yahoo.com> References: <vb9r4g$2o1f$1@gal.iecc.com> <memo.20240904163805.19028V@jgd.cix.co.uk> <vbch08$1u12$1@gal.iecc.com> <vbioi5$1j26j$15@dont-email.me> <b51fd28e5d0eeeebf2844f875741beca@www.novabbs.org> <vbm610$2aolh$2@dont-email.me> <873530da43db3e0861f42ffa00aa68dd@www.novabbs.org> <vbokvu$2ptgq$1@dont-email.me> <29efc47c7a95dc8d0c1ed07c91b656c5@www.novabbs.org> <vbta24$3s352$3@dont-email.me> <vbtfs8$3sl3q$2@dont-email.me> <vbu4m5$4rjn$1@dont-email.me> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Injection-Date: Thu, 12 Sep 2024 13:19:02 +0200 (CEST) Injection-Info: dont-email.me; posting-host="795ae34dc5508363080905c3d099c810"; logging-data="248937"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+1ijeHC9Eu0KQDqnq4tW+PXNRbchNBc74=" Cancel-Lock: sha1:OaR/I1ZKqn33m1ZDoi+4mbtkgxY= X-Newsreader: Claws Mail 3.19.1 (GTK+ 2.24.33; x86_64-w64-mingw32) Bytes: 2243 On Thu, 12 Sep 2024 07:19:33 -0000 (UTC) Lawrence D'Oliveiro <ldo@nz.invalid> wrote: > On Wed, 11 Sep 2024 18:24:24 -0700, Lars Poulsen wrote: >=20 > > On 9/11/2024 4:45 PM, Lawrence D'Oliveiro wrote: =20 > >> > >> Big segments versus small segments are quite different things. =20 > >=20 > > Segments do different things. The aspect of segments that I liked > > in the 80286 ... =20 >=20 > I wasn=E2=80=99t talking about x86-style =E2=80=9Csegmentation=E2=80=9D, = which was just a > hack to extend the address space in an awkward way. I was talking > about segments within a linear address space (and I assumed Mitch > was, too). x86 Real mode segmentation is a hack to the address space. 80286 protected mode segmentation is something else. The only similarity between the two is maximal size of segment is the same.