From: "Jerry van Dijk" <jvandyk@ibm.net>
Subject: Re: question re Ada equivalent of C function
Date: 1998/02/22
Date: 1998-02-22T00:00:00+00:00 [thread overview]
Message-ID: <01bd3f7d$43882660$4a2c5c8b@aptiva> (raw)
In-Reply-To: 34EF6CC6.28EF2D4A@stellar1.com
Talking about accessing I/O addresses,
David Fisher <frc@stellar1.com> schreef in artikel
<34EF6CC6.28EF2D4A@stellar1.com>...
> The hardware will be a Pentium; the OS will be Linux, the compiler
> (presumably) GNAT. Thing is, development is being done with Aonix 7.1 on
NT4.
As both Linux and NT are real operating systems, neither will allow you to
directly
access an IO port from a user program. By messing around with rights and
such
you might be able to pull it off using inline-assembly tricks, but at this
low level
both Linux vs NT and GNAT vs OA are incompatible.
The best solution would be if you would have a device driver for the I/O
you are
trying to access, one for NT and one for Linux.
Unless, of course, you are not trying to access any particular device
connected
to these I/O ports, but need to access I/O ports related to the machine's
operation
itself. Then there might be OS facilities to do this.
As usual when you work so close to the machine, it all depends...
--
-- Jerry van Dijk | Leiden, Holland
-- Team Ada | email: jdijk@acm.org
next prev parent reply other threads:[~1998-02-22 0:00 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-02-21 0:00 question re Ada equivalent of C function David Fisher
1998-02-21 0:00 ` Brian Rogoff
1998-02-21 0:00 ` Jerry van Dijk
1998-02-21 0:00 ` David Fisher
1998-02-22 0:00 ` Simon Wright
1998-02-22 0:00 ` Simon Wright
1998-02-22 0:00 ` Jerry van Dijk [this message]
1998-02-22 0:00 ` Robert Dewar
1998-02-22 0:00 ` Andi Kleen
1998-02-21 0:00 ` Robert Dewar
1998-02-22 0:00 ` Brian Rogoff
1998-02-22 0:00 ` Nick Roberts
1998-02-22 0:00 ` frc
1998-02-21 0:00 ` Corey Ashford
1998-02-22 0:00 ` Nick Roberts
1998-02-21 0:00 ` Robert Dewar
1998-02-22 0:00 ` Larry Kilgallen
1998-02-22 0:00 ` frc
1998-02-22 0:00 ` Linux/POSIX packages for GNAT Markus Kuhn
1998-02-22 0:00 ` Robert Dewar
1998-02-23 0:00 ` Markus Kuhn
1998-02-23 0:00 ` Robert Dewar
1998-02-23 0:00 ` Markus Kuhn
1998-02-24 0:00 ` question re Ada equivalent of C function Dale Stanbrough
1998-02-23 0:00 ` Linux/POSIX packages for GNAT Andi Kleen
1998-02-22 0:00 ` Robert Dewar
1998-02-23 0:00 ` Markus Kuhn
1998-02-23 0:00 ` Robert Dewar
1998-02-22 0:00 ` Andi Kleen
1998-02-22 0:00 ` Markus Kuhn
1998-02-22 0:00 ` Robert Dewar
1998-02-22 0:00 ` Samuel Tardieu
1998-02-23 0:00 ` Nick Roberts
1998-02-23 0:00 ` Samuel Tardieu
1998-03-05 0:00 ` Testing exception handlers James M. Darlack
1998-02-22 0:00 ` question re Ada equivalent of C function Robert Dewar
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