[A83] Re: call vs. bcall()

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: call vs. bcall()
From: "Pieter Van Nuffel [aka SUCKER]" <sucker_pvn@hotmail.com>
Date: Mon, 23 Dec 2002 22:18:31 +0000
Reply-To: assembly-83@lists.ticalc.org


>First of all...
>
>Bjump is 2 bytes larger than bcall.
>bjump = call $0050 \ .dw xxxx
>
>also, bjump resets the stack pointer, and does other stuff like that.  It 
>puts the calc into a state where it can safely return from an app.

That sounds nice... But is my logic of "the last instruction of the actual 
call is always 'ret', so if I jump (even bjump) to it is exactly the same, 
it doesn't matter where the actual 'ret' is executed" ? I know that it's 
alright with a regular Ti-83, but what about the layout of the 83+'s system 
that prevents this kinda usage?

Or doesn't anybody care or just don't know what it really does... ?


      SUCKER [Pieter Van Nuffel]

P.S. Yeah I can get pretty annoying when I am thinking about such stuff!

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Follow-Ups:

[A83] Re: call vs. bcall()

From: Gavin Olson <gtolson@comcast.net>