On Thu, 2001-12-13 at 11:24, K=FCbek Tony wrote:
> Hi,
> stumled onto this little tidbit of information:
> http://web.mit.edu/bunnie/www/proj/anatak/xboxmod.html
>=20
> Apparently there is an ( look at the image ) 16CLC63A next to the
> flash contaning the bios.
>=20
> My guess it does de-cryption of the bios 'on the fly'.

From the article

A fellow at U Texas (identity kept anonymous) points out to me that MS
gave a talk at their university, and the speaker said that they did
implement some security measures to foil hackers that try to run a
different OS on the XBOX. The speaker mentioned something about
desoldering three chips. One is most likely the FLASH. My guess is if
this information is true, there is a PIC 16LC63A microcontroller right
next door to the FLASH...I wouldn't be surprised if the PIC
microcontroller monitors the FLASH to make sure the right sequence of
operations happens, and halts the processor if something is amiss. The
third chip...well, no guesses on that one yet. Hopefully it's not the
nVIDIA MCPX. :-) The speaker at this talk also indicated that the kernel
on the XBOX is a much-stripped-down Win2k derivative (from 12 MB to
around 23kB).


>=20
> Any other takers ?
>=20
>=20
> /Tony
>=20
> --
> http://www.piclist.com hint: PICList Posts must start with ONE topic:
> [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads
>=20

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