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Groups > comp.os.linux.misc > #69812
| From | John Ames <commodorejohn@gmail.com> |
|---|---|
| Newsgroups | comp.os.linux.misc, alt.folklore.computers |
| Subject | Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth |
| Date | 2025-07-21 09:32 -0700 |
| Organization | A noiseless patient Spider |
| Message-ID | <20250721093237.0000674f@gmail.com> (permalink) |
| References | <e4ucnb1I-5IIqur1nZ2dnZfqnPudnZ2d@giganews.com> <mdq622Fpaq8U1@mid.individual.net> <aZ6cnU18-N5ONOX1nZ2dnZfqn_sAAAAA@giganews.com> <sm0cy9wllph.fsf@lakka.kapsi.fi> <105fgk4$2ka5f$1@dont-email.me> |
Cross-posted to 2 groups.
On Sat, 19 Jul 2025 07:14:12 -0000 (UTC) Lawrence D'Oliveiro <ldo@nz.invalid> wrote: > > For sure it's a really limited Unix port since the target HW is the > > original PC or PC/XT. > > Which is still way more powerful than an early-1970s-vintage PDP-11, > which is what Bell Labs Unix was originally developed on, and for. Hmm, that's an interesting question, actually - the Bell Labs -11 was an 11/45, which was much faster than the original -11s, while the IBM PC was really a bit of a dog thanks to having a 16-bit architecture on an 8-bit bus and the generally poor performance characteristics of the first-generation x86 CPUs. It'd be neat to do a head-to-head shootout. I don't know if it's recorded whether the Bell Labs -11 was core or semiconductor memory (980 vs. 450 ns cycle time;) the PC at 4.77 MHz would have a cycle time of around 209 ns, but with the aforementioned 8-bit bus. As a naive approximation, that might put them anywhere from comparable to around twice the memory bandwidth for the PC...but then the 8088's instruction times are kinda abysmal even on top of that. Definitely makes one curious...
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Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth c186282 <c186282@nnada.net> - 2025-07-16 01:24 -0400
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-07-16 15:53 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth jayjwa <jayjwa@atr2.ath.cx.invalid> - 2025-07-16 12:41 -0400
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth rbowman <bowman@montana.com> - 2025-07-16 17:32 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Rich <rich@example.invalid> - 2025-07-16 17:54 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth rbowman <bowman@montana.com> - 2025-07-16 20:11 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth c186282 <c186282@nnada.net> - 2025-07-17 03:44 -0400
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Anssi Saari <anssi.saari@usenet.mail.kapsi.fi> - 2025-07-19 09:48 +0300
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-19 07:14 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-07-19 17:49 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth John Ames <commodorejohn@gmail.com> - 2025-07-21 09:32 -0700
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth scott@slp53.sl.home (Scott Lurndal) - 2025-07-21 17:08 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Peter Flass <Peter@Iron-Spring.com> - 2025-07-21 16:04 -0700
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-21 23:06 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth scott@slp53.sl.home (Scott Lurndal) - 2025-07-22 14:46 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Rich Alderson <news@alderson.users.panix.com> - 2025-07-21 16:07 -0400
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Bob Eager <news0009@eager.cx> - 2025-07-21 21:16 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth The Natural Philosopher <tnp@invalid.invalid> - 2025-07-21 22:27 +0100
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-21 22:42 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Peter Flass <Peter@Iron-Spring.com> - 2025-07-21 16:06 -0700
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth The Natural Philosopher <tnp@invalid.invalid> - 2025-07-22 10:08 +0100
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-22 22:16 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Lars Poulsen <lars@cleo.beagle-ears.com> - 2025-07-22 19:19 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth scott@slp53.sl.home (Scott Lurndal) - 2025-07-22 14:44 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Bob Eager <news0009@eager.cx> - 2025-07-22 20:55 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth scott@slp53.sl.home (Scott Lurndal) - 2025-07-22 21:08 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Bob Eager <news0009@eager.cx> - 2025-07-22 22:29 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth scott@slp53.sl.home (Scott Lurndal) - 2025-07-23 18:48 +0000
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Rich Alderson <news@alderson.users.panix.com> - 2025-07-21 16:05 -0400
Re: Hmmm ... Downloaded Xenix - But It's *41* Floppies Worth Adrian Caspersz <email@here.invalid> - 2025-07-19 11:41 +0100
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