Re: TI-H: Re: Re: Melody of TI CALC comment and questions

To: <ti-hardware@lists.ticalc.org>
Subject: Re: TI-H: Re: Re: Melody of TI CALC comment and questions
From: "Aaron Peterson" <happy_cobbler@bigfoot.com>
Date: Sat, 12 Feb 2000 19:11:30 -0800
References: <20000210171207.1373.qmail@hotmail.com>
Reply-To: ti-hardware@lists.ticalc.org


Somebody already mentioned the solution.

Find someone with the flash rom writer and desolder the chip.  Somebody
already mentioned that another chip protected some of the memory... couldn't
we remove that and replace it with some sort of generic chip.. or read that
area with another divice?
... but then we might be getting into legal issues... we would have to write
our own rom from scratch unless TI didn't say anything about that...
AP

----- Original Message -----
From: <cavanc@hotmail.com>
To: <ti-hardware@lists.ticalc.org>
Sent: Thursday, February 10, 2000 9:12 AM
Subject: Re: TI-H: Re: Re: Melody of TI CALC comment and questions


>
> I guess I didn't make it clear that I'm not insane enough or rich enough
to
> try changing it.
> Even tough it is signed you can change it.
> If you're lucky, it might be possible to change what you want to and then
> alter one byte to get it back to the right checksum.
>
>
>
> >have you tried that with a real calc? You would have to recalculate the
> >checksum
> >for that to work, and you can't do that, because it is not only
calculated,
> >it
> >is encrypted too. (signed)
> >VTI doesn't check for checksums obviosly, and then you can change a bit
as
> >you
> >want.
> >
> >//Olle
> >
> >cavanc@hotmail.com wrote:
> > >
> > > Well, this is a liittle off topic, but I know that you can change the
> >89's
> > > OS by opening up the upgrade in a text editor.
> > > I wouldn't recommend doing it though, but if any does they should only
> > > change the text shit near the end.
> > > I edited a .ROM file for virtual TI and made it so that the "calc"
will
> > > display profane messages for certain errors and other stuff.
> > > That would be fun to have on an 89.
> > > if any body fucks with your calc then it will "get pissed" at their
> >candy
> > > ass.
> > >
> > > Cavan9
> > > ______________________________________________________
> > > Get Your Private, Free Email at http://www.hotmail.com
> >
>
> ______________________________________________________
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>