Date: Wed, 27 Mar 1996 09:18:33 +0200 (SAT) From: John Hay <jhay@mikom.csir.co.za> To: zeek@primenet.com (John Reynolds) Cc: questions@freebsd.org Subject: Re: read/write to hardware ports from user code Message-ID: <199603270718.JAA25315@zibbi.mikom.csir.co.za> In-Reply-To: <199603270612.XAA01998@localhost.primenet.com> from "John Reynolds" at Mar 26, 96 11:12:47 pm
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> > > > Subject says it all. I have a program that works with a "homemade" PC > I/O card and would like to get it to run under FreeBSD as well. I've gotten > it to run under MS-DOG, OS/2, and Linux thus far and I know this kind of > thing had to have already been done by somebody in FreeBSD land. > > I'm looking for the equivalent of the "ioperm" system call (under Linux) > which gives programs permission to write to a range of address and the > routines "inb" and "outb" which read and write a byte to a given hardware > port. All the searches under the FreeBSD Web page, man pages, and include > files have come up with nil. :( > Just open "/dev/io" in read/write mode. (You have to have the right permissions for that.) John -- John Hay -- John.Hay@csir.co.za
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