Re: TI-H: Changing the ROM

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: Changing the ROM
From: Grant Stockly <gussie@alaska.net>
Date: Fri, 4 Sep 1998 15:02:34 -0800 (AKDT)
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <199809041531.LAA32588@dns1.yml.com>
Reply-To: ti-hardware@lists.ticalc.org


It would work fine.  But you don't know how to program for the screen,
keypad, or anything.  Try disassembling the rom.  maybe that will work.

Grant

>I just had a thought, what if you'd replace the rom of your TI-85 with a
>ram ic
>and copy the rom to the ram? It would be possible to change error codes,
>messages, complete routines and you could even program the calc with your own
>program (of course then you cannot use the calc anymore, unless you make the
>program similar to the original one.) This can be done easily if you put a ram
>on top of the rom (like the internal mem exp.) and you use a switch to select
>either ram or rom. This however is just an idea, but i'll probably try this
>within a week or so. Please let me hear what you think about
>this.
>Later,
>
>Neil
>
>
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References:

TI-H: Changing the ROM

From: marcel groenendijk <groenendijk@backpackers.com>

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