Re: A89: Just a question
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Re: A89: Just a question
It is as far as I know only possible with HW1 calcs.
(If you don't have access to ti:s secret key for signing roms, wich we don't.)
It is though in HW1 calcs possible to "unlock" the flash, so you can send
commands to it, and then order it to erase itself, or blocks of it, and then to
write to it. This is no easy thing to do.
There is hints on how to do it in 89hw.txt at my page http://alh.dhs.org/ti89/
You also need the pdf about the flash chip, to know how to communicate with it.
(can be found on the same page)
Johan Borg, who wrote the doc sais he have sucsessfully unlocked it. I have
though not sucseeded in my efforts. (don't know why, and havn't had any large
motivation in trying that hard..)
The guys behing Archive Utils should know best though, since they use it in AU.
//Olle
Matt Waters wrote:
>
> A bunch of various people and myself are attempting to replace the crappy
> TI-OS on the 89 with a faster, smaller, and more UNIX-like operating system.
> Problem is, we have no idea how to write to the protected memory where the
> TI-OS lives. Although I'm pretty sure that there isn't a soul outside of TI
> who knows how to do this, I figured that if there is anyone who knows how to
> do it, he probably subscribes to this list.
>
> P.S. If anyone knows of a good C tutorial for the 89, please send me the URL
> to it. Thank you.
> ________________________________________________________________________
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