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Date:      Wed, 05 May 1999 02:40:45 -0700
From:      Amancio Hasty <hasty@rah.star-gate.com>
To:        Doug Rabson <dfr@nlsystems.com>
Cc:        CyberPsychotic <fygrave@tigerteam.net>, freebsd-hackers@FreeBSD.ORG, tech@openbsd.org
Subject:   Re: io ports reading/writing 
Message-ID:  <199905050940.CAA06889@rah.star-gate.com>
In-Reply-To: Your message of "Wed, 05 May 1999 10:18:23 BST." <Pine.BSF.4.05.9905051016150.411-100000@herring.nlsystems.com> 

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Very early on for 386bsd I implemented ioperms in the kernel mostly for
X servers however later on the XFree86 team decided that was not 
a good approach due to the crazy way that vga controllers were being
design with sparse memory mapped io ports. Not sure how linux
handles the later case and I doubt that it does.

	Cheers

-- 

 Amancio Hasty
 hasty@star-gate.com




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