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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.rmit.EDU.AU!goanna.cs.rmit.EDU.AU!munnari.OZ.AU!news.ecn.uoknor.edu!paladin.american.edu!europa.chnt.gtegsc.com!usenet.eel.ufl.edu!col.hp.com!sdd.hp.com!swrinde!elroy.jpl.nasa.gov!lll-winken.llnl.gov!uwm.edu!spool.mu.edu!agate!reason.cdrom.com!usenet From: "Jordan K. Hubbard" <jkh@FreeBSD.org> Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: Question: How to inportb() and outportb() ....? Date: Fri, 10 Nov 1995 18:38:15 -0800 Organization: Walnut Creek CDROM Lines: 8 Message-ID: <30A40C97.15FB7483@FreeBSD.org> References: <48016i$42a@bob.ludd.luth.se> NNTP-Posting-Host: time.cdrom.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 2.0b2 (X11; I; FreeBSD 2.1-STABLE i386) To: Peter Brevik <peterb@ludd.luth.se> Just open /dev/io, then you'll have permission to do these operations. I think we do expect you to use gcc's asm() statement to invoke the inb/outb insns directly (see X server sources for examples) and I'm not sure if there are C callable wrappers, but I could be wrong. Not a feature I use very much.. :-) -- Jordan