Re: A89: Re: Stupid Question

To: assembly-89@lists.ticalc.org
Subject: Re: A89: Re: Stupid Question
From: Ben Rodgers <bentensai@yahoo.com>
Date: Mon, 22 Feb 1999 19:28:43 -0800 (PST)
Delivered-To: assembly-89-outgoing@towerguard.unix.edu.sollentuna.se
Delivered-To: assembly-89@lists.ticalc.org
Reply-To: assembly-89@lists.ticalc.org


How do you  know how much to add to the stack?




---Miles Raymond <m_rayman@bigfoot.com> wrote:
>
> 
> Load Effective Address = lea
> 
> The 10 in front of the (a7) loads the address of a7 plus an offset
of 10
> into a7.  As to which one is more efficeint, I assume that lea is,
since it
> is used most often for restoring the stack.
> 
> -Miles Raymond      EML: m_rayman@bigfoot.com
> ICQ: 13217756       IRC: Killer2        AIM: MRayMan
> http://www.bigfoot.com/~m_rayman/
> 
> -----Original Message-----
> From: Daniel Walls <flinn@mindspring.com>
> To: assembly-89@lists.ticalc.org <assembly-89@lists.ticalc.org>
> Date: Sunday, February 21, 1999 11:53 PM
> Subject: A89: Stupid Question
> 
> 
> >Which is more efficient for cleaning up the stack...
> >
> >add.l #10,a7
> >      ..or..
> >lea 10(a7),a7
> >
> >and I know they both do the same thing,
> >but how does lea(a7),a7 work?  I know what it does,
> >but what does it mean?
> >
> >Lazy way to 68k,
> >- Daniel Walls
> >flinn@mindspring.com
> 
> 
> 

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