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Groups > alt.folklore.computers > #234801
| From | Rich Alderson <news@alderson.users.panix.com> |
|---|---|
| Newsgroups | alt.folklore.computers |
| Subject | Re: Just How Bad Was The Intel IAPX432? |
| Date | 2026-05-26 16:16 -0400 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <mdd4ijurknu.fsf@panix5.panix.com> (permalink) |
| References | <10v1n8r$1e4qh$1@dont-email.me> <10v2dh8$1ljrf$1@dont-email.me> <10v2j3u$1n4gq$1@dont-email.me> <10v2q1h$1ors5$1@dont-email.me> |
Lawrence =?iso-8859-13?q?D=FFOliveiro?= <ldo@nz.invalid> writes:
> On Mon, 25 May 2026 15:39:58 -0700, Peter Flass wrote:
>> My favorite misfeature was using bit-addressing instead of byte addressing.
> Now that 64-bit architectures are commonplace, I wonder why we can't have bit
> addressing instead of byte addressing. It would only cost 3 bits at the
> bottom of the address, and we have plenty to spare.
> For performance, not every instruction would need to support bit-aligned
> memory accesses -- regular loads/stores could either be defined to demand
> those bits be zero, or to ignore them. You would need special bit-aligned
> load/store instructions to take advantage of them.
Congratulations.
You have just re-invented PDP-6 byte pointers.
From 1964.
--
Rich Alderson news@alderson.users.panix.com
Audendum est, et veritas investiganda; quam etiamsi non assequamur,
omnino tamen proprius, quam nunc sumus, ad eam perveniemus.
--Galen
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Just How Bad Was The Intel IAPX432? Peter Flass <Peter@Iron-Spring.com> - 2026-05-25 07:44 -0700
Re: Just How Bad Was The Intel IAPX432? Lynn Wheeler <lynn@garlic.com> - 2026-05-25 07:54 -1000
Re: Just How Bad Was The Intel IAPX432? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-05-25 21:04 +0000
Re: Just How Bad Was The Intel IAPX432? Peter Flass <Peter@Iron-Spring.com> - 2026-05-25 15:39 -0700
Re: Just How Bad Was The Intel IAPX432? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-05-26 00:38 +0000
Re: Just How Bad Was The Intel IAPX432? Peter Flass <Peter@Iron-Spring.com> - 2026-05-25 20:41 -0700
Re: Just How Bad Was The Intel IAPX432? Rich Alderson <news@alderson.users.panix.com> - 2026-05-26 16:16 -0400
Re: Just How Bad Was The Intel IAPX432? scott@slp53.sl.home (Scott Lurndal) - 2026-05-27 18:59 +0000
Re: Just How Bad Was The Intel IAPX432? John Ames <commodorejohn@gmail.com> - 2026-05-27 12:11 -0700
Re: Just How Bad Was The Intel IAPX432? scott@slp53.sl.home (Scott Lurndal) - 2026-05-27 22:44 +0000
Re: Just How Bad Was The Intel IAPX432? Peter Flass <Peter@Iron-Spring.com> - 2026-05-27 13:06 -0700
Re: Just How Bad Was The Intel IAPX432? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-05-27 22:34 +0000
Re: Just How Bad Was The Intel IAPX432? scott@slp53.sl.home (Scott Lurndal) - 2026-05-27 22:47 +0000
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