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From: graifer@net1.UCSD.EDU (Dan Graifer)
Newsgroups: net.micro.mac
Subject: Re: Background Programs
Message-ID: <243@net1.UCSD.EDU>
Date: Tue, 26-Aug-86 14:45:06 EDT
Article-I.D.: net1.243
Posted: Tue Aug 26 14:45:06 1986
Date-Received: Thu, 28-Aug-86 01:32:05 EDT
References: <131@ndmath.uucp>
Reply-To: graifer@net1.UUCP (Dan Graifer)
Organization: U.C. San Diego
Lines: 11
Summary: How to watch modem port

In article <131@ndmath.uucp> milo@ndmath.uucp (Greg Corson) writes:
>I am interested in writing a little background program for the Macintosh to 
>handle certain types of electronic mail applications.  Unfortunately I am
>having a hard time finding out exactly how to put such a program together.
>
>...(list of questions)

Seems to me that most of what you want is being done by the DA "QDial".  You
might talk to them about it; They offer the source for the assembly code:
(415)661-7374 or 753-3002 (MacQueue).
Dan