Re: A89: Help

To: assembly-89@lists.ticalc.org
Subject: Re: A89: Help
From: Xavier VASSOR - The Doors Team <doors@altern.org>
Date: Thu, 22 Oct 1998 19:06:38 +0100
Delivered-To: assembly-89-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <3.0.5.32.19981021154422.007c6100@pop.netaddress.com >
Reply-To: assembly-89@lists.ticalc.org


>    move.w   #4,-(a7)               
>    lea      string(pc),a0          
>    move.l   a0,-(a7)
>    move.w   #50,-(a7)              
>    move.w   #25,-(a7)              
>    jsr      tios::DrawStrXY        
>    add.l    #10,(a7)                 ----> this will add 10 to the value
pointed to by a7, but we want to add 10 to a7, so do:
	lea	10(a7),a7	;optimised
or	add.l	#10,a7

BTW, the code:
    lea      string(pc),a0          
    move.l   a0,-(a7)
can be optimised to:
	pea	string(pc)


Xavier VASSOR
---The Doors Team
E-mail:xvassor@mail.dotcom.fr
Doors Homepage: http://doorshome.home.ml.org
ICQ:10241721

References:

A89: Help

From: Paco <pacster@usa.net>

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