From owner-freebsd-hackers@FreeBSD.ORG  Wed May 30 17:22:53 2007
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Date: Wed, 30 May 2007 11:22:36 -0600 (MDT)
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To: rmgls@wanadoo.fr
From: "M. Warner Losh" <imp@bsdimp.com>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: direct I/O access
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Open "/dev/io" and you should be able to do what you want.

How you do this in assembler, I'll leave to others.

Warner