Path: utzoo!attcan!uunet!mcsun!hp4nl!dnlunx!dnlts!nugteren
From: nugteren@pttrnl.nl
Newsgroups: comp.sys.mac.programmer
Subject: How can I keep my application memory resident ???
Message-ID: <56297.27285b80@pttrnl.nl>
Date: 26 Oct 90 14:51:27 GMT
Organization: PTT Research Neher Laboratories, The Netherlands
Lines: 14

I have written a trackball driver (in Lightspeed C) for the MacII that allows 
connection of a MSDOS trackball to the serial port of the Mac. It works fine as
an application, but now I want to put it in the background as an interrupt
handler. I thought the easiest way to do this is to build it on the ROM serial
driver, use asynchronous calls and specify a routine in my program as the
completion routine. I already tried this and it works very well as long as my
program is active (which means I have to put a "while(1){}" at the end of my
main!!). As soon as the Mac leaves my main() it throws the program away.

So what the problem really boils down to is:How can I keep my program resident?

I would greatly appreciate any tips or advice,

Nils