Re: A83: Re: Program Help/External Programs/SOS Concepts.

To: <assembly-83@lists.ticalc.org>
Subject: Re: A83: Re: Program Help/External Programs/SOS Concepts.
From: "Dan E" <jfsmi@geocities.com>
Date: Tue, 16 Mar 1999 09:12:14 -0500
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
Delivered-To: assembly-83@lists.ticalc.org
Reply-To: assembly-83@lists.ticalc.org


Yes you can use rom calls in libraries and yes you can also call your own
program from the library (the program stays @ $9327 even when you use
library calls).  Why you would want to do this I'm not sure, because that
would mean that any program using that library routine would have to have
that code in their program...

-Dan


>
>Can you use ROM calls in SOS libraries?  Or could you call a routine to
your
>current program from a library if you knew the exact location?  For example
if
>you had a routine right underneath the SOS header stuff you'd know the
exact
>address of the routine.  This could be a simple computational routine (with
>some manipulation of the stack) that would then in turn call or JP a
routine
>in the library.
>
>Brandon
>Sterner
>
>In a message dated 3/15/99 8:13:36 PM Eastern Standard Time,
joewing@usmo.com
>writes:
><< You can't use insertmem/deletemem because SOS makes the VAT data
somewhat
> incorrect.
> It is possible to use calls and jumps with relative addressing, I believe
>ZShell
> manages to do this, but it uses more memory and takes more time. You could
do
> this by having your main program set up the necessary calls in a safe
memory
> area.
> Anyway, there is a good way of adding free memory to the end of your
program.
> Check out the source to SQRXZ, it uses a this method.
>
> Joe Wingbermuehle
> http://joewing.calc.org >>
>