Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cwjcc!tut.cis.ohio-state.edu!bloom-beacon!apple!tecot
From: tecot@Apple.COM (Ed Tecot)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Notification Manager at Boot
Message-ID: <26330@apple.Apple.COM>
Date: 24 Feb 89 21:15:35 GMT
References: <2430@ilium.cs.swarthmore.edu>
Distribution: na
Organization: Apple Computer Inc, Cupertino, CA
Lines: 15

In article <2430@ilium.cs.swarthmore.edu> jackiw@swatsun.UUCP () writes:
>Now if I try "Checking for Specify
>Functionality" ala TN#156, by comparing trap 0x5E (NMInstall)'s address
>to trap 0x9F (UnImplementTrap), the comparison FAILS under old systems,
>where the Notification Manager is undefined. 
>
>Q: HOW DO I TELL IF I CAN USE IT DURING MY INIT, SO I CAN CONFIGURE MY
>FUTURE BEHAVIOR APPROPRIATELY?

You've got the right idea.  I suspect that you are using GetTrapAddress
instead of NGetTrapAddress.  By doing so, you are finding that BitSet, which
is TOOLBOX trap 0x5E is installed.  NMInstall is an OS trap.  The correct call
is NGetTrapAddress(0x5E, OSTrap).

						_emt