Newsgroups: comp.sys.apple2
Path: utzoo!utgpu!watserv1!maytag!daemon
From: ckirie@csg.UWaterloo.CA (Chris Irie)
Subject: GS/OS Device Driver Question
Message-ID: <1990Jul25.145501.25289@maytag.waterloo.edu>
Sender: daemon@maytag.waterloo.edu (Admin)
Organization: Computer Systems Group, U of Waterloo
Disclaimer: The opinions expressed are solely the author's.
Distribution: na
Date: Wed, 25 Jul 90 14:55:01 GMT
Lines: 27

Ahoy one and all...

I have a question regarding GS/OS Device Drivers that maybe someone
out there could answer (please?)

Here's the thing. I have noticed that whenever the GS switches
into PRODOS 8 (or out of it) that a device driver I am writing
gets reloaded into  memory. This is a problem for me because my
driver needs to maintain a certain amount of state information.

So, the question is: How do I keep my driver in memory at all times,
even when I switch into and out of PRODOS 8? 

Or is this the wrong thinking for writing a GS/OS device driver? 
Would it be better to keep the state info in an initialization file?

I'm using the MPW IIGS cross development package, writing for the 
most part in C.

Any thoughts? Thanks for reading...

-- Chris Irie  (ckirie@csg.uwaterloo.ca)

------------------
DISCLAIMER: The above thoughts are my own, and do not necessarily
            represent those of my employer.