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From: russotto@eng.umd.edu (Matthew T. Russotto)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Please ask for your cooperation (Re: How to tell if a volume is ...?)
Message-ID: <1990Sep8.144027.25403@eng.umd.edu>
Date: 8 Sep 90 14:40:27 GMT
References: <696@dbase.A-T.COM> <1990Sep6.181239.1181@efi.com> <3917@wucc.waseda.ac.jp>
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Organization: College of Engineering, Maryversity of Uniland, College Park
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In article <3917@wucc.waseda.ac.jp> 60d006@wucc.waseda.ac.jp (Kazuaki Ishizaki) writes:
>
>Thank you for your reply and kindness.
>And I successed in judging if a volume is AppleShare.
>
>But I have trouble in judging if a volume is TOPS. So, I know that
>MacEnvy is able to do it and MacEnvy's document is written it's
>method. And I try it by this method. But I fail to do it.
>That is why maybe I try it under TOPS-J. 
>                                     ^^
>Then I ask for your cooperation. I want to know between TOPS and TOPS-J.
>But my friends don't have TOPS. So if you have TOPS and cooperate me,
>Please E-Mail to me. And I ask that you try to execute my test program.

I think the way MacEnvy does it is it looks up the driver reference number
it finds in the parameter block, then finds the name for that driver.  If
it is a TOPS disk, the driver name will be '.Tops'.  (I don't know what
Tops-J would have as a driver name-- I'd be surprised if it is different)