A83: Re: Filesystem-scanner

To: <assembly-83@lists.ticalc.org>
Subject: A83: Re: Filesystem-scanner
From: "David Phillips" <david@acz.org>
Date: Thu, 1 Feb 2001 11:52:53 -0700
References: <08bf95808170121NET015S@hetnet.nl>
Reply-To: assembly-83@lists.ticalc.org


It's ram.  It's all write-able (i.e. unprotected), and there isn't very much
of it.  So it isn't really feasible or possible on the 83.  On the 83+, you
can just archive everything, and if the ram gets corrupted, load it back
into ram from the archive.  On the 86, it is sometimes possible to restore
from a crash, because the vat is stored on page 6, which isn't normally
swapped into usable ram.  There is a checksum of the memory that the OS uses
to know whether or not to reset when recovering from a program misbehaving.
And there are at least a couple programs to protect against crashes and even
resets.  Sorry, not possible on the 83, because the 83 just plain (ok, won't
say it considering it is the A83 list).

> Most of the time when my calc crashes, I've seen that the variables in ram
> are behaving strange, variables that *are* >1meg big, same name used
twice,
> etc.
>
> Most of these things are caused by assembly programs...
>
> Even some strange thing: I don't know why it happens.
> Store a string into a list, so it's automaticly updating the numbers, then
> start Ion, the link between the string part and the list-var will we
> broken, but it still allocates memory...

References:

A83: Filesystem-scanner

From: "Henk Poley" <HPoley@DDS.nl>