Path: utzoo!attcan!uunet!husc6!bloom-beacon!mit-eddie!bbn!rochester!cornell!batcomputer!sun.soe.clarkson.edu!nelson
From: nelson@sun.soe.clarkson.edu (Russ Nelson)
Newsgroups: comp.sys.ibm.pc
Subject: Re: help needed with device driver chai
Message-ID: <1082@sun.soe.clarkson.edu>
Date: 17 Jun 88 17:54:15 GMT
References: <39500014@pyr1.cs.ucl.ac.uk>
Reply-To: nelson@sun.soe.clarkson.edu (Russ Nelson)
Organization: Clarkson University, Potsdam, NY
Lines: 17

In article <39500014@pyr1.cs.ucl.ac.uk> awylie@pyr1.cs.ucl.ac.uk writes:
>
>can someone out there tell me how to find the beginning of the DOS device
>driver chain? I have been looking in memory and can see the external drivers
>loaded after the first memory control block. However the chain pointers in
>the driver headers point backwards! I can find my external drivers (NANSI
>etc) by eye, and chain back into the DOS area, but what I cant do is find
>a pointer to the head of the chain. Any help is appreciated.

I suggest that you don't fiddle with the device chain.  Freemacs used to
fiddle with it, and I could never get it to work correctly under the
various and sundary versions of MS-DOS used around the world.

Fiddling with the device chain is best left to a program like pmap.  You
should certainly never build it into a user program...
-- 
Despise Ronald Reagan now--avoid the rush.