[A83] Re: TI-OS resumes

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: TI-OS resumes
From: "The one and only SUCKER ..." <sucker_pvn@hotmail.com>
Date: Wed, 22 Aug 2001 19:37:13 +0000
Reply-To: assembly-83@lists.ticalc.org


The other day it was mentioned that when a label is called,
it stores the ram location of the call xxxx in hl and the pushes
it. And ret then pops hl, increments it and then goes there,
So I though, when a prgm is executed like call prgm,
the only thing I should do is to pop hl and in hl would be
where the TI-OS in the ram or rom is working.

      SUCKER


>Wait, wait, what are you referrring to?
>
> > About the pop hl in the beginning of a prgm,
> > this isn't right. It would be 529Eh (TI-83-).
> > I was thinking for a while asm programs were
> > executed like call xxxx, but they use _exec_assmebly
>AFAIK, _exec_assembly just clears out the ram at the progstar location, and
>then calls the program.
>
>(well, actually I believe it pushes some return address onto the stack,
>and then jp's to 9327h, but that's a different story, with the same effect 
>to
>the programmer)
>
>
> > and I don't know how I should get the place in the ram
> > where this code will be executed out of a romcall...
> >
> >       SUCKER
> >
> > (next time think first???)
> >
> >
> > _________________________________________________________________
> > Get your FREE download of MSN Explorer at 
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> >
>
>
>


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Follow-Ups:

[A83] Re: TI-OS resumes

From: Peter-Martijn Kuipers <hyper@hysoft-automation.com>

[A83] Re: TI-OS resumes

From: Gavin Olson <gtolson@snet.net>