A89: Re: Direct Input and Other Questions

To: <assembly-89@lists.ticalc.org>
Subject: A89: Re: Direct Input and Other Questions
From: "Blake Johnson" <johns627@tc.umn.edu>
Date: Sat, 27 Feb 1999 20:04:34 -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


I was getting a similar problem.  In part of my code, if I simply changed a
label and recompiled, my program would give an address error.  The wierd
thing was that when I used the debugger to see what was going on, some
instructions had been changed to "jsr $0".  Changing the label back and
recompiling, I ran the debugger again and the same instructions were
correct.  For instance, it would now say "jsr gray4lib::on" or jsr with an
address that was not zero.  Could this be a problem with a68k?

--Blake Johnson

>if I add a call at the top of the loop,
>let's say bsr MoveSprite, that Moves the sprite up one pixel, I either get
>an address error or the sprite would not move.

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