RE: A89: Overwriting ROM (was Re: Linux Port)

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RE: A89: Overwriting ROM (was Re: Linux Port)


I say we go over to France, find this Wormhole guys, and beat the crap
out of him if he won't tell us his secret.  There are ways to make men
talk.  Seriously, if we were to go to him or anyone else who knows, with
a legitimate project, I'm sure he'd be willing to share the info.  About
the Linux issue, I think you're right about Linux being not useful for
the Calc.  What do you think about rewriting the OS for different
functions, but optimizing it for the calc, so while it won't be
standard, it would be better than TI-OS for programs.  For math, perhaps
TI-OS could be rewritten as a program rather than an OS.  Thats kinda
farfetched, but something along those lines would be cool.  Perhaps
someone else has written m68k routines for math functions already that
we could adapt.

Mark E. Scott Jr.
mscott@dbcity.net


-----Original Message-----
From: Scott Noveck [mailto:noveck@pluto.njcc.com]
Sent: Sunday, July 18, 1999 8:43 PM
To: assembly-89@lists.ticalc.org
Subject: A89: Overwriting ROM (was Re: Linux Port)



The secret of overwriting portions of the ROM will probably never be
shared
by those of us who know it - it's too powerful.  Wormhole (one of the
French
guys) actually DID write a successful virus, and tested it himself - he
couldn't FLASH over his calc.  And his antivirus didn't work, so he
actually
had to go into his ROM hex editor (I want one of those =) and fix it. .
.
then again, I'm sure that he could have just screwed it up worse and
sent in
to TI to fix it =)

Speaking of which, FYI, my calc should be down in Fort Worth now, being
repaired by TI. . . the graphlink broke and got stuck in the linkport.
I
convinced them to send me a new calc to calc cable, too =)

There's no point in porting Linux to a TI - name one feature worth
having on
the calculator.  No Linux programs would be compatible with the calc
becuase
NOTHING is meant to work on a small 2-color LCD screen with such a weird
input system.  The kernel doesn't have anything that would benefit a
calc
with less than 400k of RAM. . .

Also, I believe that to write an entire new ROM you must write it to be
compatible with the bootloader.  A new ROM would have to be Flashed in,
not
sent via a program to overwrite the ROM. . .

    -Scott
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