RE: LZ: Entry into ZShell
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RE: LZ: Entry into ZShell
<Don't forget, this wasn't my idea, I heard it on the list last summer ago>
Does any person experienced with hexediting, rom-dumping, and Z80 assembler
have a TI-82 as well? If you exist, maybe you could post a DASMed dump of some
of the rom?
--MZB (micahbro@msn.com)
----------
From: owner-list-zshell@lists.ticalc.org on behalf of TGaArdvark@aol.com
Sent: Sunday, May 25, 1997 10:26 PM
To: list-zshell@lists.ticalc.org
Subject: Re: LZ: Entry into ZShell
<< Someone hexedited an .85b on a computer to point a variable's address to a
special address in RAM (Yes, RAM!) that contains the address of the keyboard
handler, so in the backup, as long as you don't do anything to that
variable,
everything's normal. If you store the address of ZShell to that variable,
the
sky clouds over, everything you touch turns to brass, you're hit with
lightning, and the calc runs ZShell without the custom menu and without IM
2,
which means it can't be removed! Incidentally, that may be a way to put a
ZShell on the TI-82, if enough research can be done.
--MZB (micahbro@msn.com)
>>
We have a winner! The first feasible-looking suggestion to add asm to the 82
in several months. All you need to do is find the address of one of those
pointers in the 82 RAM (because it's not in the backup). A stroke of
brilliance. (You know what, I'd bet this has been thought of before, checked,
found inpossible, and thrown out.)