Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!sco!chapman
From: chapman@sco.COM (Brian Chapman)
Newsgroups: comp.unix.i386
Subject: Re: sysi86 system call
Message-ID: <7446@scolex.sco.COM>
Date: 13 Aug 90 19:30:32 GMT
References: <1437@hslrswi.UUCP>
Sender: news@sco.COM
Lines: 21


jean@pogo.hasler writes:

>The system call 'sysi86' from UNIX System V/386 release 3.2 allows
>to implement machine-specific functions.
>I am looking for accessing directly a parallel port (without driver)
>to read and set bits in the same way as simple in() or out() instructions.
>I would find reasonable to do it with sysi86(). sysi86() can receive
>command and arguments and I have some troubles to understand sysi86.h
>and v86.h header files.
>Has somebody experience with sysi86?

Yes there is a root only sysi86 system call:

	sysi86(SI86V86, V86SC_IOPL, 0x3000);

The 8 include files necessary are left as an exercise
for the reader.		:-)
-- 
Brian Chapman		uunet!sco!chapman
Pay no attention to the man behind the curtain!