A89: Re: Stupid Question

To: <assembly-89@lists.ticalc.org>
Subject: A89: Re: Stupid Question
From: "Miles Raymond" <m_rayman@bigfoot.com>
Date: Mon, 22 Feb 1999 17:12:19 -0600
Delivered-To: assembly-89-outgoing@towerguard.unix.edu.sollentuna.se
Delivered-To: assembly-89@lists.ticalc.org
Reply-To: assembly-89@lists.ticalc.org


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