Re: Ev86 mode and Linux

Juhani Rautiainen (
Thu, 11 Dec 1997 16:09:27 +0200 (EET)

On Thu, 11 Dec 1997, Yuri Per wrote:

> > I don't think the extended-v86 mode is documented well enough for it to
> > be used. It seems to do much of what the current kernel v86 mode support
> > does, except in hardware rather than in software. However, it probably
> > doesn't do it quite the same way, and as the interfaces are "Appendix H"
> > from Intel, it's hard to find out about them..
> >
> > Linus
> Extended-v86 mode is fully documented in "Pentium(R) Pro Family
> Developer's Manual, Volume 3: Operating System Writer's Manual"
> available at
> Yuri Per

This is what Robert Collins said in his article (and I think that
he references the same document):

-- snip --
Even though Intel finally documented VME, many details were incorrect or
left out.
-- snip --

Collins' article can be found at