INTEL Pentium 1

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Olympusman
Posts: 5090
Joined: Sun Jan 15, 2012 12:31 pm

INTEL Pentium 1

Post by Olympusman »

INTEL Pentium 1.jpg
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

PeteM
Posts: 180
Joined: Sat Jan 05, 2019 12:06 am
Location: West Coast, USA

Re: INTEL Pentium 1

Post by PeteM »

Apparently there's a real bug in there (or at least that famous floating point error) . . .

Didier_Micro
Posts: 40
Joined: Sat Nov 21, 2020 1:48 pm
Location: Bailly Near Versailles

Re: INTEL Pentium 1

Post by Didier_Micro »

Hello,

For my part I can't see the bug despite the quality of the photo :)

As a reminder or information read from Wikipedia :
An exemple of the bug :
4,195,835.0 / 3,145,727.0 = 1.333820449136241000 (correct),
4,195,835.0 / 3,145,727.0 = 1.333739068902037600 (wrong).

Also : the bug was only on some models of the processor.
Pentium family processors with a clock frequency > 100 MHz were corrects.

Regards
Didier

rjlittlefield
Site Admin
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Location: Richland, Washington State, USA
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Re: INTEL Pentium 1

Post by rjlittlefield »

https://en.wikipedia.org/wiki/Pentium_FDIV_bug -- a very interesting discussion.

--Rik

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