Intel Pentium Bug: Workaround (1st lvl cache)

Ralf Rudolph (rrudolph@ARTIFEX.DE)
Tue, 11 Nov 1997 13:26:28 +0100

Hi everyone,
I just confirmed that disabling the 1st Level Cache (as someone suggested here) in the BIOS (if it offers that option) makes at least Windows NT 4.0 immune against the F0-attack. You can leave the 2nd level Cache enabled.

Of course, this makes NT run at a crawl..

PS: This is a F0-Bug-hack written in Delphi 3.0, for those of us who prefer pascal over C :)

program F0Bug;
uses windows;
begin
asm
db $f0,$0f,$c7,$c8;
end;
end.

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| Ralf Rudolph, Dipl.-Inf. (FH)
| Artifex Editorial Services GmbH, Germany
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