Pentium Bug !!! Method to find it !

Pentium Bug !!! Method to find it !

Post by Solon Luigi Lu » Sat, 10 Dec 1994 04:55:10



Hoe to find if you have bugged Pentium chip ...

run Windows

start the CALCULATOR-Program

try this: 4195835 / 3145727 * 3145727
The result should be = 4195835 (simple)

If you have a *ed-up Pentium chip the result will be: 4195579 !!!
(A slight difference of just 256 ... [who cares =)])

The best thing is: Intel must exchange your faulty Pentium Chip !

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Pentium Bug !!! Method to find it !

Post by !Productio » Mon, 12 Dec 1994 01:41:58




Quote:

>Hoe to find if you have bugged Pentium chip ...

>run Windows

>start the CALCULATOR-Program

>try this: 4195835 / 3145727 * 3145727
>The result should be = 4195835 (simple)

>If you have a *ed-up Pentium chip the result will be: 4195579 !!!
>(A slight difference of just 256 ... [who cares =)])

That may just be a bug in Calculator, as I don't think it uses the FPU.  
(It works on a 386SX, so I'm pretty sure it doesn't, anyway.)  Calculator
is full of bugs : 3.11 - 3.1 = 0, for example.

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Pentium Bug !!! Method to find it !

Post by Carl Laurence Gonsalv » Mon, 12 Dec 1994 04:58:48






>>Hoe to find if you have bugged Pentium chip ...

>>run Windows

>>start the CALCULATOR-Program

>>try this: 4195835 / 3145727 * 3145727
>>The result should be = 4195835 (simple)

>>If you have a *ed-up Pentium chip the result will be: 4195579 !!!
>>(A slight difference of just 256 ... [who cares =)])

>That may just be a bug in Calculator, as I don't think it uses the FPU.  
>(It works on a 386SX, so I'm pretty sure it doesn't, anyway.)  Calculator
>is full of bugs : 3.11 - 3.1 = 0, for example.

What was posted above *does* sound like the Pentium FDIV bug. Perhaps the
Calculator detects an FPU and uses it if present? Heck, perhaps the Windows
API does this.

The secon bug (the 3.11-3.1=0 bug) is actually caused by a bug in the
Windows API. Something about it returning the wrong number of significant
digits or something. There's a work around for it too. The calculator that
comes with Win'95 uses such a work-around.

Incidently, has anyone heard anything about the other Pentium bug? The
multi-threading problem when using a write-back cache?

--
     Carl Laurence Gonsalves - Computer Science, University of Waterloo

           "I think not," said Rene Descartes, and vanished.

 
 
 

Pentium Bug !!! Method to find it !

Post by Nicole A. Mc Nich » Mon, 12 Dec 1994 05:36:35




: >
: >Hoe to find if you have bugged Pentium chip ...
: >
: >
: >run Windows
: >
: >start the CALCULATOR-Program
: >
: >try this: 4195835 / 3145727 * 3145727
: >The result should be = 4195835 (simple)
: >
: >If you have a *ed-up Pentium chip the result will be: 4195579 !!!
: >(A slight difference of just 256 ... [who cares =)])

: That may just be a bug in Calculator, as I don't think it uses the FPU.  
: (It works on a 386SX, so I'm pretty sure it doesn't, anyway.)  Calculator
: is full of bugs : 3.11 - 3.1 = 0, for example.

Hahha..Windows! From the people who brought you EDLIN!