A89: Bug and fix to ROM dumper

To: <assembly-89@lists.ticalc.org>
Subject: A89: Bug and fix to ROM dumper
From: "Rusty Wagner" <river@gte.net>
Date: Tue, 15 Sep 1998 18:56:53 -0400
Delivered-To: assembly-89-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-89@lists.ticalc.org


Oops!  I didn't bother to realize that there would be no reason why TI would
put the 89's ROM in a module like with the 92+, as with Flash ROM there is
no need for the module's physical upgradability by replacement.  The problem
is that external ROMs (like the 92+) have a base address of $400000 and
internal ROMs (like the 89) have a base address of $200000.  This caused the
ROM dump to be incorrect.  (If you open it up in a hex editor, you will see
a nice repeating pattern though the entire file.  That wouldn't exist with a
real ROM.)  The fixed(?) version can be found at
http://home1.gte.net/river/dump.zip .
The RAM dump, however, is working perfectly.  PlusShell v0.99 Test Release 1
will be out soon and include TI-89 support.

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