Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucsd!usc!apple!dlyons
From: dlyons@Apple.COM (David A. Lyons)
Newsgroups: comp.sys.apple2
Subject: Re: GS/OS Device Driver Question
Message-ID: <43410@apple.Apple.COM>
Date: 27 Jul 90 23:16:20 GMT
References: <1990Jul25.145501.25289@maytag.waterloo.edu> <43374@apple.Apple.COM>
Distribution: na
Organization: Apple Computer Inc, Cupertino, CA
Lines: 25

>In article <1990Jul25.145501.25289@maytag.waterloo.edu> ckirie@csg.UWaterloo.CA (Chris Irie) writes:
>>I have a question regarding GS/OS Device Drivers that maybe someone
>>out there could answer (please?)
>>[...]
>>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? 

I wrote earlier:

DL>The "restartable" bit is bit 15 of your device_characteristics word.
DL>Set that, and make sure your driver is prepared to be started again

Chris wrote me back to say that didn't work.  OOPS!

The correct bit location for a regular device driver's "restartable" bit 
is bit 11, not 15, of the device characteristics.  (It's bit 15 for a
supervisory driver.  My mistake.)
-- 
David A. Lyons, Apple Computer, Inc.      |   DAL Systems
Apple II Developer Technical Support      |   P.O. Box 875
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