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Re: M68k add to memory is not a mistake any more

Message-ID <4F7B9B0F.6060906@SPAM.comp-arch.net> (permalink)
Date 2012-04-03 17:51 -0700
From "Andy (Super) Glew" <andy@SPAM.comp-arch.net>
Organization comp-arch.net
Newsgroups comp.arch
Subject Re: M68k add to memory is not a mistake any more
References (2 earlier) <9thhmnFdvbU1@mid.individual.net> <jlci0q$55q$1@speranza.aioe.org> <jlei2r$psb$1@gosset.csi.cam.ac.uk> <jlf554$lpv$1@speranza.aioe.org> <3c05c00c-c54f-4ce3-bc2f-a66293740d10@ms3g2000pbb.googlegroups.com>

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On 4/3/2012 12:31 PM, Quadibloc wrote:
> On Apr 3, 9:31 am, ChrisQ<blackh...@devnull.com>  wrote:
>> Assuming that any registers used are saved on int entry,
>> then restored on exit, there is no way that there can be any undefined,
>> smoke and mirrors side effects in terms of mainline code execution.
>
> In a word, no. Saving all registers on entry and restoring all
> registers on exit is what subroutines do.

Nitpicking: subroutines often (usually) have some registers and other 
state that is defined to be either smashed, unreliable, after exit (i.e. 
which needs to be caller saved if it is required to be preserved), as 
well as state, registers and, e.g. .condition codes or IEEE sticky 
flags, that may reflect the values returned.



An interrupt routine had
> better also save and restore the Program Status Word - the flags, like
> the carry and overflow bit.

An interrupt should arrange so that NO architectural register state in 
an interruptee is affected (except possibly for performance counters, 
e.g. counting number of interrupts).

It can do this by saving and restoring, or by using shadow state, 
switching register and flag sets, etc.

The latter approach can be fast, but does not scale to deeply nested 
interrupts - and also tends to slow down normal code if the shadow 
register set is in the same physical register file.  If the shadow 
register set is physically separate, and the moral equivalent of 
microcode copies between the L1 and L2 register sets...

(Note that I said "interruptee architectural register state".  Memory 
state is highly likely to be changed.)

Certain interrupts may not be so transparent - e.g. "halt waiting for 
interrupt systems", where one expects the interrupt to arrive and does 
not require all interruptee state to be preserved.  For that matter "run 
while waiting for interrupt, doing something low priority that does not 
use all registers"

I am a big advocate of there being defined code sequences that will save 
and restore all state.  Even state that did not exist at the time the 
interrupt handler was written.

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Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-02-20 23:36 +0000
  Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-21 08:53 +0000
    Re: M68k add to memory is not a mistake any more Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-02-21 11:07 +0100
      Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-21 12:25 -0500
      Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-02-21 19:13 +0000
        Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-21 11:38 -0800
          Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-21 16:54 -0500
            Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-21 14:39 -0800
              Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-02-21 23:23 +0000
                Re: M68k add to memory is not a mistake any more Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-02-22 09:29 +0100
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-22 02:27 -0800
                Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-02-22 13:04 +0000
                Re: M68k add to memory is not a mistake any more MitchAlsup <MitchAlsup@aol.com> - 2012-02-22 09:14 -0800
                Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-02-22 13:19 +0000
                Re: M68k add to memory is not a mistake any more Chris Gray <cg@GraySage.com> - 2012-02-22 13:41 -0700
              Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-22 10:28 -0500
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-22 08:32 -0800
                Re: M68k add to memory is not a mistake any more Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-02-23 07:36 +0100
          Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-02-22 08:15 -0800
            Re: M68k add to memory is not a mistake any more anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-02-22 16:46 +0000
            Re: M68k add to memory is not a mistake any more Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-02-23 07:47 +0100
        Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-21 19:53 +0000
          Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-02-22 00:05 +0000
          Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-02-22 08:23 -0800
            Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-22 08:49 -0800
            Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-22 18:17 +0000
              Re: M68k add to memory is not a mistake any more Stephen Fuld <SFuld@alumni.cmu.edu.invalid> - 2012-02-23 15:24 -0800
                Re: M68k add to memory is not a mistake any more timcaffrey@aol.com (Tim McCaffrey) - 2012-02-24 03:28 +0000
                Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-02-23 20:09 -0800
                Re: M68k add to memory is not a mistake any more Stephen Fuld <SFuld@alumni.cmu.edu.invalid> - 2012-02-24 08:53 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-24 19:27 +0000
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-24 13:07 +0000
                Re: M68k add to memory is not a mistake any more Stephen Fuld <SFuld@alumni.cmu.edu.invalid> - 2012-02-24 08:44 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-24 18:04 +0000
                Re: M68k add to memory is not a mistake any more Andrew Reilly <areilly---@bigpond.net.au> - 2012-02-24 21:18 +0000
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-24 21:23 +0000
                Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-02-24 09:54 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-24 18:40 +0000
                Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-02-24 11:15 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-24 20:49 +0000
                Re: M68k add to memory is not a mistake any more George Neuner <gneuner2@comcast.net> - 2012-02-24 17:22 -0500
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-24 22:39 +0000
                Re: M68k add to memory is not a mistake any more Andrew Reilly <areilly---@bigpond.net.au> - 2012-02-25 03:00 +0000
                Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-24 17:44 -0500
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-24 23:11 +0000
                Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-24 19:22 -0500
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-25 10:14 +0000
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-25 07:37 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-25 15:57 +0000
                Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-25 13:39 -0500
                Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-02-25 23:26 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-26 10:09 +0000
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-26 02:45 -0800
                Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-26 13:05 -0500
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-27 00:53 -0800
                Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-27 15:22 -0500
                Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-02-27 09:21 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-27 19:47 +0000
                Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-02-28 19:16 -0800
                Re: M68k add to memory is not a mistake any more Andrew Reilly <areilly---@bigpond.net.au> - 2012-02-29 05:07 +0000
                Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-29 10:49 -0500
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-29 10:14 +0000
                Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-02-29 08:28 -0800
                Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-02-29 08:24 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-29 16:43 +0000
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-29 09:08 -0800
                Re: M68k add to memory is not a mistake any more "Paul A. Clayton" <paaronclayton@gmail.com> - 2012-02-29 12:17 -0800
                Re: M68k add to memory is not a mistake any more Stephen Fuld <SFuld@alumni.cmu.edu.invalid> - 2012-02-27 12:23 -0800
                Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-02-28 17:12 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-29 09:09 +0000
                Re: Itanium fixed Brett Davis <ggtgp@yahoo.com> - 2012-02-27 20:33 -0600
                Re: M68k add to memory is not a mistake any more Anne & Lynn Wheeler <lynn@garlic.com> - 2012-02-25 11:15 -0500
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-25 18:10 +0000
                Re: M68k add to memory is not a mistake any more Erik Trulsson <ertr1013@student.uu.se> - 2012-02-27 08:47 +0000
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-25 12:37 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-25 21:42 +0000
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-26 21:00 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-27 09:48 +0000
                Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-02-27 12:01 +0000
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-27 06:02 -0800
                Re: M68k add to memory is not a mistake any more Andrew Reilly <areilly---@bigpond.net.au> - 2012-02-28 02:04 +0000
                Re: M68k add to memory is not a mistake any more Robert Wessel <robertwessel2@yahoo.com> - 2012-02-27 20:58 -0600
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-27 06:00 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-27 14:05 +0000
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-27 09:37 -0800
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-27 11:31 -0800
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-27 11:46 -0800
                Re: M68k add to memory is not a mistake any more "Paul A. Clayton" <paaronclayton@gmail.com> - 2012-02-27 17:46 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-27 19:42 +0000
                Re: M68k add to memory is not a mistake any more Bernd Felsche <berfel@innovative.iinet.net.au> - 2012-02-28 08:22 +0800
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-28 06:39 -0800
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-28 08:26 -0800
                Re: M68k add to memory is not a mistake any more MitchAlsup <MitchAlsup@aol.com> - 2012-02-28 08:45 -0800
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-28 08:58 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-28 17:24 +0000
                Re: M68k add to memory is not a mistake any more Andrew Reilly <areilly---@bigpond.net.au> - 2012-02-29 00:19 +0000
                Re: M68k add to memory is not a mistake any more Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-02-29 09:27 +0100
                Re: M68k add to memory is not a mistake any more Bernd Felsche <berfel@innovative.iinet.net.au> - 2012-02-29 17:17 +0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-29 09:03 +0000
                Re: M68k add to memory is not a mistake any more Andrew Reilly <areilly---@bigpond.net.au> - 2012-02-29 10:39 +0000
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-29 13:10 +0000
                Re: M68k add to memory is not a mistake any more Andrew Reilly <areilly---@bigpond.net.au> - 2012-02-29 23:08 +0000
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-29 23:36 +0000
                Re: M68k add to memory is not a mistake any more George Neuner <gneuner2@comcast.net> - 2012-03-01 15:32 -0500
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-03-01 20:52 +0000
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-28 13:15 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-28 22:28 +0000
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-28 16:13 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-29 10:04 +0000
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-29 10:26 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-29 18:28 +0000
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-29 11:24 -0800
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-29 19:32 +0000
                Re: M68k add to memory is not a mistake any more Bernd Felsche <berfel@innovative.iinet.net.au> - 2012-03-01 03:37 +0800
                Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-29 12:14 -0500
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-29 18:02 +0000
                Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-29 13:44 -0500
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-29 19:24 +0000
                Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-29 16:22 -0500
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-29 22:41 +0000
                Re: M68k add to memory is not a mistake any more mrs@kithrup.com (Mike Stump) - 2012-03-05 08:46 +0000
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-03-05 09:27 +0000
                Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-03-27 22:13 +0000
                Re: M68k add to memory is not a mistake any more Andrew Reilly <areilly---@bigpond.net.au> - 2012-03-27 22:59 +0000
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-03-28 11:11 +0100
                Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-03-28 18:09 +0000
                Re: M68k add to memory is not a mistake any more Andrew Reilly <areilly---@bigpond.net.au> - 2012-03-28 22:29 +0000
                Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-04-02 15:53 +0000
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-04-03 11:06 +0100
                Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-04-03 15:31 +0000
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-04-03 12:31 -0700
                Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-04-03 17:51 -0700
                Re: M68k add to memory is not a mistake any more Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-04-04 10:23 +0200
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-04-04 13:54 -0700
                Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-04-04 15:22 -0700
                Re: M68k add to memory is not a mistake any more "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-04-04 16:11 -0700
                Re: M68k add to memory is not a mistake any more jacko <jackokring@gmail.com> - 2012-04-04 19:24 -0700
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-04-05 11:01 -0700
                Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-04-04 13:07 +0000
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-04-04 07:17 -0700
                Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-04-04 20:38 +0000
                Re: M68k add to memory is not a mistake any more timcaffrey@aol.com (Tim McCaffrey) - 2012-04-06 21:24 +0000
                Re: M68k add to memory is not a mistake any more kenney@cix.compulink.co.uk - 2012-04-07 04:21 -0500
                Re: M68k add to memory is not a mistake any more Tom Gardner <spamjunk@blueyonder.co.uk> - 2012-04-07 11:28 +0100
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-04-07 08:57 -0700
                Re: M68k add to memory is not a mistake any more Morten Reistad <first@last.name> - 2012-04-10 11:13 +0200
                Re: M68k add to memory is not a mistake any more Tom Gardner <spamjunk@blueyonder.co.uk> - 2012-04-10 13:55 +0100
                Re: M68k add to memory is not a mistake any more timcaffrey@aol.com (Tim McCaffrey) - 2012-04-10 16:44 +0000
                Re: M68k add to memory is not a mistake any more Robert Wessel <robertwessel2@yahoo.com> - 2012-04-10 13:03 -0500
                Re: M68k add to memory is not a mistake any more timcaffrey@aol.com (Tim McCaffrey) - 2012-04-10 19:11 +0000
                Re: M68k add to memory is not a mistake any more Tom Gardner <spamjunk@blueyonder.co.uk> - 2012-04-10 19:09 +0100
                Re: M68k add to memory is not a mistake any more anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-04-08 14:47 +0000
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-04-07 19:20 +0100
                Re: M68k add to memory is not a mistake any more Anne & Lynn Wheeler <lynn@garlic.com> - 2012-04-04 09:55 -0400
                Re: M68k add to memory is not a mistake any more timcaffrey@aol.com (Tim McCaffrey) - 2012-04-04 14:33 +0000
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-04-04 07:57 -0700
                Re: M68k add to memory is not a mistake any more timcaffrey@aol.com (Tim McCaffrey) - 2012-04-04 22:46 +0000
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-04-04 10:04 +0100
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-04-03 12:24 -0700
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-04-04 09:53 +0100
                Re: M68k add to memory is not a mistake any more MitchAlsup <MitchAlsup@aol.com> - 2012-03-28 15:50 -0700
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-03-29 11:21 -0700
                Re: M68k add to memory is not a mistake any more MitchAlsup <MitchAlsup@aol.com> - 2012-03-30 11:58 -0700
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-04-03 12:39 +0100
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-03-29 11:43 +0100
                Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-04-02 16:41 +0000
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-04-03 11:09 +0100
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-03-29 06:53 -0700
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-04-03 11:17 +0100
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-04-03 06:15 -0700
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-04-03 15:03 +0100
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-04-03 07:57 -0700
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-04-04 12:48 +0100
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-04-03 07:11 -0700
                Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-04-04 09:59 +0100
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-03-28 12:24 -0700
                Re: M68k add to memory is not a mistake any more Andrew Reilly <areilly---@bigpond.net.au> - 2012-02-29 00:26 +0000
                Re: M68k add to memory is not a mistake any more "Marven Lee" <marven10@gmail.com> - 2012-03-05 10:46 +0000
                Re: M68k add to memory is not a mistake any more Morten Reistad <first@last.name> - 2012-03-01 14:16 +0100
                Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-02-27 11:51 +0000
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-27 06:06 -0800
                Re: M68k add to memory is not a mistake any more MitchAlsup <MitchAlsup@aol.com> - 2012-02-27 08:39 -0800
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-27 09:33 -0800
                Re: M68k add to memory is not a mistake any more Thomas Womack <twomack@chiark.greenend.org.uk> - 2012-02-27 19:20 +0000
                Re: M68k add to memory is not a mistake any more MitchAlsup <MitchAlsup@aol.com> - 2012-02-27 14:36 -0800
                Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-27 15:29 -0500
                Re: M68k add to memory is not a mistake any more Quadibloc <jsavard@ecn.ab.ca> - 2012-02-27 15:57 -0800
                Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-27 20:42 -0500
                Re: M68k add to memory is not a mistake any more Robert Wessel <robertwessel2@yahoo.com> - 2012-02-27 21:04 -0600
                Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-03-27 22:35 +0000
                Re: M68k add to memory is not a mistake any more Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-03-28 09:52 +0200
                Re: M68k add to memory is not a mistake any more Rick Jones <rick.jones2@hp.com> - 2012-03-28 23:14 +0000
                Re: M68k add to memory is not a mistake any more Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-03-29 13:16 +0200
            Re: M68k add to memory is not a mistake any more "Marven Lee" <marven10@gmail.com> - 2012-02-23 11:57 +0000
              Re: M68k add to memory is not a mistake any more Bernd Felsche <berfel@innovative.iinet.net.au> - 2012-02-24 00:26 +0800
    Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-21 02:51 -0800
      Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-21 11:14 +0000
        Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-21 03:36 -0800
          Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-21 11:39 +0000
            Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-21 03:55 -0800
              Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-21 12:34 +0000
                Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-21 15:02 -0800
        Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-21 03:48 -0800
          Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-21 11:57 +0000
            Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-21 05:20 -0800
              Re: M68k add to memory is not a mistake any more nmm1@cam.ac.uk - 2012-02-21 13:43 +0000
              Re: M68k add to memory is not a mistake any more Stephen Fuld <SFuld@alumni.cmu.edu.invalid> - 2012-02-21 10:04 -0800
        Re: M68k add to memory is not a mistake any more Michael S <already5chosen@yahoo.com> - 2012-02-21 05:46 -0800
          Re: M68k add to memory is not a mistake any more Anne & Lynn Wheeler <lynn@garlic.com> - 2012-02-21 09:57 -0500
            Re: M68k add to memory is not a mistake any more MitchAlsup <MitchAlsup@aol.com> - 2012-02-21 08:54 -0800
              Re: M68k add to memory is not a mistake any more Anne & Lynn Wheeler <lynn@garlic.com> - 2012-02-21 14:27 -0500
          Re: M68k add to memory is not a mistake any more EricP <ThatWouldBeTelling@thevillage.com> - 2012-02-21 13:15 -0500
    Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-02-21 19:36 +0000
      Re: M68k add to memory is not a mistake any more timcaffrey@aol.com (Tim McCaffrey) - 2012-02-23 01:49 +0000
        Re: M68k add to memory is not a mistake any more ChrisQ <blackhole@devnull.com> - 2012-02-26 17:45 +0000

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