Intel a Ariane

["Ales ZIKA, Ing., FU Pelhrimov" <Ales.Zika@pel.cb.ds.mfcr.cz>]

	Tak jsem prosel archivy a nasel jsem vystrizek z Intel Secrets (mam 
pocit, ze se neco z nej objevilo kdysi i v teto konferenci), tyka se 
doby, kdy byla objevena chyba Pentia s nezpracovanim vyjimky pri 
preteceni aritmetiky.
	Uvadi se tam sice, ze Ariane spadla kvuli neosetrene vyjimce 
propcesoru, ale neni jasne (aspon me), zda to byla prave tato a jestli 
to vubec byl Intel Pentium.

It might be interesting to note that a launch failure of the Ariane 5
rocket, which happened less than a minute into the launch, was traced to
behavior around an overflow condition (in this case, it was software,
not hardware, that was the problem). One of the computers on board had a
floating point to integer conversion that overflowed, but because the
overflow was not handled by the software the computer did a dump of its
memory. Unfortunately, this memory dump was interpreted by the rocket as
instructions to its rocket nozzles. Result--boom! 


                              Ales Zika
                              Pelhrimov

                              E-mail : Ales.Zika@pel.cb.ds.mfcr.cz