Re: A89: Writing to Flash ROM


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Re: A89: Writing to Flash ROM




I wonder when are we going to see the first virus for TI89?
;)

BTW, I think keeping such sources "secret" will not help at all. 
There is no security with obscurity. I think the best thing to avoid
problems is to make information widely available to *any* user. 

I remember how virus things started in the old PC world - undocumented
BIOS and interrupt functions and relatively few real tools to explore
the situation.

--JS

On Wed, Jun 07, 2000 at 08:22:44AM +0200, Zeljko Juric wrote:
|
|Hi!
|
|> Thanks to all who responded.  I did finally write to
|> the flash rom by following what Zeljko Juric
|> suggested.  I did not get my specific program to work
|> because the flash protection cannot be disabled in the
|> area that I was writing to.  (The block that the first
|> part of the AMS code is in also contains the
|> certificate.  I figure that TI doesn't want people to
|> erase that block with the block erase command.)  Olle
|> Hedman was correct when he said that corrupting this
|> block could ruin the calc.  But gladly we don't have
|> to worry about that :-)
|
|I strongly recommend for anybody who succeeded to write
|anything into the Flash ROM to keep source of such 
|routines exclusively for internal purposes, and not to
|release them to the public. Giving such sources to the
|public is equal like giving an atomic bomb to an idiot.
|These sources may be misused disasterously!!!
|
|Zeljko Juric




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