Re: How to crash OS/2 1.2 & 1.3?

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#1280

From: Terry Fry
Date: Sat, 29 Aug 1992 04:48

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In article <1992Aug28.150650.719@ccsvax.sfasu.edu> z_kupkams@ccsvax.sfasu.edu writes:

>	No Problem, Just write a device Driver. Or another possible choice
>is the use an IOPL segment under 1.2 to write to the Interupt Controller.
>
>DosPortAccess under 1.x might not allow the second choice, but it's worth a
>shot.

DosPortAccess is part of the API, however it was never implemented.

Run a program that writes to a set of ports in an IOPL segment,
then call DosPortAcess restricting access to these ports, and write
again.  Nothing is going to happen, no protection fault.

I can't remember why IBM never finished its implementation, and
I havn't remmebered where I read that it doesn't do anything.

Any IBM'ers want to shed some light?

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Message-ID: <1992Aug29.044807.15808@access.digex.com>

Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!usenet.ins.cwru.edu!agate!iat.holonet.net!uupsi!psinntp!digex.com!terryfry

References: <1992Aug28.131233.26834@klaava.Helsinki.FI> <1992Aug28.150650.719@ccsvax.sfasu.edu>

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Newsgroups: comp.os.os2.programmer
Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!usenet.ins.cwru.edu!agate!iat.holonet.net!uupsi!psinntp!digex.com!terryfry
From: terryfry@access.digex.com (Terry Fry)
Subject: Re: How to crash OS/2 1.2 & 1.3?
Message-ID: <1992Aug29.044807.15808@access.digex.com>
Organization: Express Access Online Communications, Greenbelt, Maryland USA
References: <1992Aug28.131233.26834@klaava.Helsinki.FI> <1992Aug28.150650.719@ccsvax.sfasu.edu>
Date: Sat, 29 Aug 1992 04:48:07 GMT
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