Description

This item is from the PC Hardware FAQ, by Willie Lim and Ralph Valentino with numerous contributions by others. (v1.25).

2.12 How can I tell if my Pentium has the FDIV bug?

If you purchased your Pentium in 1994 or earlier, chances are near 100% that it has the problem. Purchasing it after this date does not guarantee a bug free CPU. The problem existed in all speed grades.

The program:

ftp://ftp.intel.com/pub/IAL/pentium/    - executable
ftp://ftp.intel.com/pub/IAL/pentium/    - instructions

is Intel's official program to identify CPUs with the FDIV bug. This program uses the CPU ID register to compare against the list of known buggy Pentiums rather than attempting to reproduce the bug through software, so it should be accurate even if the OS has a software FDIV patch already in place.

 

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• prev: 2.11 What is the floating point (FDIV) problem with the Pentium?
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• next: 2.13 How do I get a replacement for my buggy Pentium?

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