Date   : Sun, 28 Dec 2008 12:29:47 +0000
From   : robert@... (Rob)
Subject: Using stack page for temp vars

2008/12/28 Alex Taylor <zeem.uk@...>:
> 2008/12/28 Jonathan Graham Harston <jgh@...>:
>
>> I am **FED** **UP** with calling *commands from View, Diagram, ViewSheet,
>> Exmon, Art, any non-BASIC language, and things being corrupted because it's
>> trampled over space that BASIC doesn't use, thinking that nothing uses it.
>
> This is really interesting, because I think I may have been guilty of
> this (even though I was in my teens at the time). I'm not sure if this
> counts though, it was a tiny piece of machine code called from a BASIC
> program - is that the same, or does that not count because it's called
> from within BASIC?

No, that doesn't count becuase that's what the reserved bytes were for
- for use by code exclusively used from within BASIC programs,  The
problem comes when people write more "generic" routines (things like
sideways ROM/RAM tools for instance) to use that workspace, because
they might be called from within other language ROMs, where that
workspace is not available, and so they disrupt the operation of the
language concerned.