A92: Addressing mode

To: assembly-92@lists.ticalc.org
Subject: A92: Addressing mode
From: Sudan Christoph <e98csuda@eif.ch>
Date: Mon, 29 Mar 1999 12:47:37 +0200
Delivered-To: assembly-92-outgoing@towerguard.unix.edu.sollentuna.se
Delivered-To: assembly-92@lists.ticalc.org
Reply-To: assembly-92@lists.ticalc.org


I've just a question concerning the addressing modes.
I already asked  Keith Kirton. He told me tat there 
must be a bug in the compiler A68k. If someone is 
able to give me an answer, pleas read the following
explication.

My problem concern the indexed addressing mode with
a data register:

	LEA (A5,D7.w),A5

The compiler isn't able to create the right object
code!

A little program for illustrate it:
;****************************
	xdef _main
	xdef _comment
_main:
	LEA (A5,D7.w),A5
	Move.w (A5),D4
	Move.w D4,D5
	RTS
_comment:
	dc.b "TryOut",0
	END
;****************************

Look at the following object code created by the A86k.exe:

;ooooooooooooooooooooooooooooooooooo
  ç      è         é   Kù    
8:Nu4I`üVersuch   ï  _main
         _comment     A5,D7.w 
            ò
;ooooooooooooooooooooooooooooooooooo

I know it's absolutely normal that nobody understand it
(without an object code list and hex editor!!) . The only
thing possible to read are the labels _main and _comment 
and the file name VERSUCH.ASM (-> normal!?), and finaly the
expression A5,D7.w. It's evident, this expression can't be 
object code.

If somebody know to fix this bug please mail me!

Thank you for your patience.

Sudan Christoph
e-mail: e98csuda@eif.ch

If you prefer it, you can mail me in French or German too:)

Follow-Ups:

Re: A92: Addressing mode

From: Laurent Desnogues <ldesnogu@tif.ti.com>

Re: A92: Addressing mode

From: jean-baptiste-andre canazzi <Jean-Baptiste-Andre.Canazzi@epita.fr>

Re: A92: Addressing mode

From: Keith Kirton <kkirton@acex.com>

Re: A92: Addressing mode

From: Cliff Biffle <cbiffle@safety.net>