[Oberon] RISC simulator

[Jan de Kruyf]

Hi Chris,

Reading lessons at 2 sharp, in the hall :)

" because restarting the simulator fixes
the problem and the module compiles normally."

But then again maybe my spelling mistake caught you of guard. . . ;)

At first when they started appearing I was of your opinion, but now I opine
differently since I cannot (factual language, emperical knowledge) pinpoint
any place in the compiler source where they happen more than in other
places.

It looks something like (woolly language) a rotten memory location, but
then I do not get any complaints from linux otherwise, and I do use this
machine to the limits of available memory. It pages a lot.

I also did get memory corruption problems using Oberon-olr, which I did not
solve yet. There pieces of text file in the editor would disappear without
gving due notice, most annoying.

At the moment I have half a mind to set up project-norebo also from Peter
de Wachter to see what happens there. ( and I like the idea, it will work
well together with using emacs as an editor. At the moment I send files
across after an extensive edit.

here are the system details:

jan at janDell:~$ uname -a
Linux janDell 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u5
(2015-10-09) x86_64 GNU/Linux

I do not remember that I built the simulator for 32 bit or anything like
that. Just typed 'make' I think.

Cheers

On Sun, Nov 22, 2015 at 11:10 PM, Chris Burrows <chris at cfbsoftware.com>
wrote:

> TRAP 4 results from accessing a NIL pointer. Don't let preconceived ideas
> ("I am sure ...", "I am also sure ...") prevent you from doing a proper
> investigation of the problem. ProjectOberon is pretty good at identifying
> runtime errors. If the system reports that you are accessing a NIL pointer
> at pos 4103 in Files then you can be fairly confident that is what is
> happening,
>
> Regards,
> Chris
>
> Chris Burrows
> CFB Software
> http://www.cfbsoftware.com
>
> From: Oberon [mailto:oberon-bounces at lists.inf.ethz.ch] On Behalf Of Jan
> de Kruyf
> Sent: Sunday, 22 November 2015 5:21 AM
> To: ETH Oberon and related systems
> Subject: [Oberon] RISC simulator
>
> Hallo,
> I meant to ask for a while already:
>
> What is the reason and has anybody got a solution for TRAP 4 appearing
> after working for a while.
> Like thus:
> --------------------
>   compiling ORPJ
>   pos 4103  TRAP   4 in Files at 00005BD0
> --------------------
>
> I am sure it has nothing to do with Files.Mod because it might happen in
> any module.
> And I am also sure that it is not my code, because restating the simulator
> fixes
> the problem and the module compiles normally.
>
> thanks
>
> j.
>
>
>
>
> --
> Oberon at lists.inf.ethz.ch mailing list for ETH Oberon and related systems
> https://lists.inf.ethz.ch/mailman/listinfo/oberon
>
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