#Bad Pentium Processors..
21-Nov-94 19:21:45
Sb: #Bad Pentium Processors..
Fm: Byron J. Davis 74444,3670
To: Jim Lammers 73261,66
Hi Jim,
Oh, there is a major (MAJOR) glitch in the pentium. It is definately not fun.
Here's another way to check you numeric processor for those of you who don't
own SPSS:
If you are running Windows, you can test your Pentium chip
using the Calculator in the Windows "Accessories" group.
Just bring up the Calculator and enter the following
keystrokes exactly as shown here:
4195835/3145727=*3145727=
If you get 4195835, you're OK. If you get 4195579, you have
a Pentium with a bad numeric processor. Any program that
uses the numeric processor's double-precision floating-point
division will give the wrong answer for this particular
problem with the Pentium chip, but not with a 486 or 386. It
seems that it is possible that Intel corrected the problem for
the more recently released Pentium machines, but I haven't heard
of a report yet of a Pentium that doesn't do this.
Byron