Re: A89: Starting out assembly, need help

To: assembly-89@lists.ticalc.org
Subject: Re: A89: Starting out assembly, need help
From: Daniel7073@aol.com
Date: Wed, 2 Dec 1998 20:19:39 EST
Delivered-To: assembly-89-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-89@lists.ticalc.org

In a message dated 12/02/1998 5:05:21 PM Pacific Standard Time,
TurboSoft@aol.com writes:

> so lf l push four words onto the stack, then before the end of the program l
>  need to 
>  add #8,a7
>  like that?
>  Also, what's the difference between
>  move.w #3,d0
>  and
>  move.w \3,d0
>  do they do the same thing?

Correct, youneed to change the stack pointer back to where it was before, or
your function/program will return to some weird address.  This is because the
rts instruction looks on the stack for the address to go to.
move.w #3,d0  moves the number 3 into d0.
move.w \3,d0 would be used in a macro to move the third parameter to the macro
into d0

Daniel Imfeld

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