Re: A82: Galaxian bug......not found???

To: assembly-82@lists.ticalc.org
Subject: Re: A82: Galaxian bug......not found???
From: Barubary <darkstar_usa@pipeline.com>
Date: Sun, 19 Apr 1998 18:13:48 -0700
Delivered-To: assembly-82-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-82@lists.ticalc.org


>Barubary-  Are you sure the Galaxian bug is caused by the use of that 
>display routine? I thought it was but now I'm not so sure. I replaced 
>the routine with ROM_CALL(DISP_GRAPH) which required changes throughout 
>the source, but still the bug occured. I originally thought the display 
>screen routine was the cause of the bug, but that was mainly based on 
>the fact that the routine was the last common link between Orzunoid and 
>Galaxian. But it could be something else. Tonight I'll check the sources 
>for anything similar. Could it be the highscore routine?
>  Sam

ANYTHING that writes past GRAPH_MEM+767 WILL cause problems...  you need
to scan the source code checking to see how far it can possibly write into
RAM.

-- Barubary

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