12/25/94: Pentium FDIV Instruction by Delphi, | Category: Delphi - General Information | 1 comment - (Comments are closed)

Pentium FDIV Instruction

91097 25-DEC 03:09 General Information
Pentium FDIV Instruction
From: PAGAN To: ALL

Forwarded from SKEPTIC listserv:

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Date: Sat, 24 Dec 1994 18:52:01 -0500
From: Garrison Hilliard
Subject: Pentium

Q&A: THE PENTIUM FDIV BUG

Q: How many Pentium designers does it take to screw in a light bulb?
A: 1.99904274017, but that’s close enough for non-technical people.

Q: What do you get when you cross a Pentium PC with a research grant?
A: A mad scientist.

Q: What’s another name for the “Intel Inside” sticker they put on
Pentiums?
A: The warning label.

Q: What do you call a series of FDIV instructions on a Pentium?
A: Successive approximations.

Q: Complete the following word analogy: Add is to Subtract as Multiply
is to:
1) Divide
2) ROUND
3) RANDOM
4) On a Pentium, all of the above
A: Number 4.

Q: What algorithm did Intel use in the Pentium’s floating point divider?
A: “Life is like a box of chocolates.” (Source: F. Gump of Intel)

Q: Why didn’t Intel call the Pentium the 586?
A: Because they added 486 and 100 on the first Pentium and got
585.999983605.

Q: According to Intel, the Pentium conforms to the IEEE standards 754 and
854 for floating point arithmetic. If you fly in aircraft designed using
a Pentium, what is the correct pronunciation of “IEEE”?
A: Aaaaaaaiiiiiiiiieeeeeeeeeeeee!

TOP TEN NEW INTEL SLOGANS FOR THE PENTIUM
—————————————————————————

9.9999973251 It’s a FLAW, Dammit, not a Bug
8.9999163362 It’s Close Enough, We Say So
7.9999414610 Nearly 300 Correct Opcodes
6.9999831538 You Don’t Need to Know What’s Inside
5.9999835137 Redefining the PC — and Mathematics As Well
4.9999999021 We Fixed It, Really
3.9998245917 Division Considered Harmful
2.9991523619 Why Do You Think They Call It *Floating* Point?
1.9999103517 We’re Looking for a Few Good Flaws
0.9999999998 The Errata Inside

For those skeptical of Intel…
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1 comment to Pentium FDIV Instruction

  • pucc_unknown

    91100 25-DEC 22:56 General Information
    RE: Pentium FDIV Instruction (Re: Msg 91097)
    From: DBREEDING To: PAGAN

    > Forwarded from SKEPTIC listserv:
    >
    > ————————- snip ————————-
    > Date: Sat, 24 Dec 1994 18:52:01 -0500
    > From: Garrison Hilliard
    > Subject: Pentium
    >
    > Q&A: THE PENTIUM FDIV BUG

    Yeah, I’d seen this one.. It really is hilarious what these computer
    types can come up with. There’s a lot of wit amongst the crow.

    I would suppose that stuff like this might have had some effect in causing
    Intel to decide they better go ahead and replace all defective units.

    BTW, I saw an article in the Sunday Business supplement to one of our
    newspapers where Intel has authorized a Silicon Valley jewelry maker to
    make jewelry out of defective Pentium (and 486) chips. They make earrings,
    necklaces and bracelets. If I remember correcty the jewelry sells for around
    $20 – $30. According to the article this is a little less than the $385 each
    the good Pentiums sell for (and that’s in lots of 1,000 or more).

    — David Breeding –
    CompuServe : 72330,2051
    Delphi : DBREEDING

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