Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!umich!yale!cs.utexas.edu!uunet!proto!joe
From: joe@proto.COM (Joe Huffman)
Newsgroups: comp.os.msdos.programmer
Subject: Re: Using mice with C w/o machine language
Summary: Zortech has a function to call for this.
Message-ID: <1403@proto.COM>
Date: 24 Aug 90 09:06:34 GMT
References: <1990Aug23.215002.8771@uokmax.uucp>
Organization: Prototronics; Sandpoint, Idaho
Lines: 19

In article <1990Aug23.215002.8771@uokmax.uucp>, gene@uokmax.uucp (Gene E. 
 Johannsen) writes:
> This vector has to be in the es:dx registers when this interrupt is called.  
> How in a C program can I make these registers point to a C routine?

You can't do it without a helper function.  Zortech has the msm_XXXX family
of functions.  One of which will install your interrupt.  You could also
do it with the int86x() function.  Be careful though.  In this case it 
can't be a standard C function.  The return must be an IRET, not a RET.
the msm_ function puts a 'wrapper' around your 'C' function with an IRET
in the proper place...

Some other compilers have a special interrupt declared function type.


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