Re: OS/2 device drivers

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#2537

From: Jan Mikkelsen
Date: Sat, 13 Apr 1991 15:53

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In article <1991Apr09.151935.19325@lut.fi> cale@lut.fi (Antti Kirmanen) writes:
>
>I'm currently trying to write a device driver for OS/2.
>My problem is, that I should use inp and outp functions to
>communicate with a port. OS/2 programmers reference manual
>says, that I should use DosPortAccess() function call but then ...
>Program crashes allways in the first outp() or inp() call.
>I'm using Microsoft C 6.0 with OS/2 1.1
>

You need to do a "#pragma intrinsic" for inp() and outp() in your source
code.  It has been some time since I did a device driver for OS/2, but
I believe this will solve your problem.

-- 
Jan Mikkelsen
janm@dramba.neis.oz.AU or janm%dramba.neis.oz@metro.ucc.su.oz.au
"She really is."

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!spool.mu.edu!munnari.oz.au!metro!dramba!janm
From: janm@dramba.neis.oz (Jan Mikkelsen)
Newsgroups: comp.os.os2.programmer
Subject: Re: OS/2 device drivers
Message-ID: <1991Apr13.155334.24207@dramba.neis.oz>
Date: 13 Apr 91 15:53:34 GMT
References: <1991Apr09.151935.19325@lut.fi>
Organization: Dramba Holdings, Lindfield, Australia
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