From: Jon Steinhart <jon@fourwinds.com>
To: The Unix Heritage Society mailing list <tuhs@tuhs.org>
Subject: Re: [TUHS] Early Linux and BSD
Date: Tue, 21 Jan 2020 09:25:34 -0800 [thread overview]
Message-ID: <202001211725.00LHPYOO3282464@darkstar.fourwinds.com> (raw)
In-Reply-To: <CANCZdfph+LJhxS=ir68Kzi0ft-Pb+mtpMEFSYk5duVcSLcVsRw@mail.gmail.com>
Warner Losh writes:
>
> On Tue, Jan 21, 2020, 10:18 AM Jon Steinhart <jon@fourwinds.com> wrote:
>
> > Lars Brinkhoff writes:
> > > Jon Steinhart wrote:
> > > > The 32032 made sense for the workstation division based on the data
> > sheets.
> > > > But, it turned out to be extremely buggy, and unlike the 68K I don't
> > recall
> > > > the ability to look at and patch the state of the microcode.
> > >
> > > Did you have the ability to look at and patch the state of 68000
> > > microcode? How?
> >
> > My memory is very very very fuzzy on this. I seem to recall that microcode
> > state was pushed onto a stack in certain cases, and that it was possible to
> > fix some problems there for certain weird cases relating to memory
> > management.
> > That's all that I remember about it as that's not the part of things that I
> > was working on, just heard grumbles from other folks about it.
> >
>
> This isn't for the two cpu design to allow instructions to be restarted
> after a page fault.
>
> Warner
>
> Jon
No, this was using a 68020 with the PMMU.
next prev parent reply other threads:[~2020-01-21 17:26 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-17 16:01 [TUHS] On the origins of Linux - "an academic question" Arrigo Triulzi
2020-01-17 16:53 ` Warner Losh
2020-01-17 17:08 ` Arrigo Triulzi
2020-01-17 17:25 ` Brantley Coile
2020-01-17 19:59 ` Arno Griffioen
2020-01-18 3:50 ` Theodore Y. Ts'o
2020-01-18 4:19 ` [TUHS] Early Linux and BSD (was: On the origins of Linux - "an academic question") Greg 'groggy' Lehey
2020-01-18 15:25 ` Larry McVoy
2020-01-18 16:19 ` reed
2020-01-19 2:49 ` Theodore Y. Ts'o
2020-01-19 3:12 ` Greg 'groggy' Lehey
2020-01-19 3:47 ` [TUHS] Early Linux and BSD Warren Toomey
2020-01-19 3:51 ` Greg 'groggy' Lehey
2020-01-19 3:58 ` [TUHS] Early Linux and BSD (was: On the origins of Linux - "an academic question") Greg 'groggy' Lehey
2020-01-19 13:25 ` Theodore Y. Ts'o
2020-01-19 13:48 ` Clem Cole
2020-01-20 3:32 ` Greg A. Woods
2020-01-20 3:51 ` George Michaelson
2020-01-20 3:59 ` [TUHS] Early Linux and BSD Jon Forrest
2020-01-20 17:19 ` [TUHS] Early Linux and BSD (was: On the origins of Linux - "an academic question") Clem Cole
2020-01-20 17:49 ` Warner Losh
2020-01-20 19:00 ` Clem Cole
2020-01-20 18:04 ` Larry McVoy
2020-01-20 18:09 ` David Barto
2020-01-20 18:34 ` [TUHS] Early Linux and BSD Arthur Krewat
2020-01-20 19:18 ` [TUHS] Early Linux and BSD (was: On the origins of Linux - "an academic question") Clem Cole
2020-01-20 19:46 ` Jon Steinhart
2020-01-20 20:15 ` Clem Cole
2020-01-21 6:58 ` [TUHS] Early Linux and BSD Lars Brinkhoff
2020-01-21 14:30 ` Clem Cole
2020-01-21 17:17 ` Jon Steinhart
2020-01-21 17:22 ` Warner Losh
2020-01-21 17:25 ` Jon Steinhart [this message]
2020-01-21 18:43 ` Clem Cole
2020-01-21 18:44 ` Clem Cole
2020-01-21 19:14 ` Warner Losh
2020-01-21 20:27 ` Clem Cole
2020-01-22 0:14 ` [TUHS] Early Linux and BSD (was: On the origins of Linux - "an academic question") Greg A. Woods
2020-01-21 0:44 ` Bakul Shah
2020-01-20 19:09 ` Theodore Y. Ts'o
2020-01-20 19:51 ` Clem Cole
2020-01-20 23:04 ` Greg A. Woods
2020-01-21 0:13 ` Warner Losh
2020-01-21 23:45 ` Greg A. Woods
2020-01-18 15:30 ` [TUHS] On the origins of Linux - "an academic question" Larry McVoy
2020-01-17 23:11 ` Andrew Warkentin
2020-01-17 23:20 ` Rob Pike
2020-01-17 23:38 ` Brantley Coile
2020-01-18 0:23 ` Wesley Parish
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