Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!tut.cis.ohio-state.edu!pt.cs.cmu.edu!b.gp.cs.cmu.edu!Ralf.Brown@B.GP.CS.CMU.EDU
From: Ralf.Brown@B.GP.CS.CMU.EDU
Newsgroups: alt.msdos.programmer
Subject: Re: Int 3
Message-ID: <25b5c63d@ralf>
Date: 18 Jan 90 12:35:57 GMT
Sender: ralf@b.gp.cs.cmu.edu
Organization: Carnegie Mellon University School of Computer Science
Lines: 17
In-Reply-To: <D1R7N=@rpi.edu>

In article <D1R7N=@rpi.edu>, skeeve@pawl.rpi.edu (Sean C. Cox) wrote:
}
}  Int 3 sets a breakpoint for program execution, useful for debugging, but
} not much else (I can't think of anything at least). When your program

Turbo Pascal versions 1 through 3 used INT 3 to implement Control-Break
checking when enabled by the {$U+} compiler directive.	An INT 3 would be
inserted after the code for each statement, and the interrupt handler would
check the keyboard, aborting or returning as appropriate.

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"How to Prove It" by Dana Angluin              Disclaimer? I claimed something?
14. proof by importance:
    A large body of useful consequences all follow from the proposition in
    question.