Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!hacgate!ashtate!dbase!cy
From: cy@dbase.A-T.COM (Cy Shuster)
Newsgroups: comp.sys.mac.programmer
Subject: Re: How to tell if a volume is a floppy drive?
Message-ID: <696@dbase.A-T.COM>
Date: 4 Sep 90 21:55:31 GMT
References: <1517@ntmtv.UUCP> <9794@goofy.Apple.COM> <7796@gollum.twg.com> <9874@goofy.Apple.COM> <3900@wucc.waseda.ac.jp> <690@dbase.A-T.COM> <12229@hoptoad.uucp>
Reply-To: cy@dbase.UUCP (Cy Shuster)
Organization: Ashton Tate Development Center Glendale, Calif.
Lines: 19

In article <12229@hoptoad.uucp> tim@hoptoad.UUCP (Tim Maroney) writes:
>In article <690@dbase.A-T.COM> cy@dbase.UUCP (Cy Shuster) writes:
>>Always clear out your PB blocks: before every call!
>
>No offense, but I think that's terrible advice.  All you have to do is
>set the particular parameters listed as significant in the call.  The
>arrow is only deceptive in the case of ioNamePtr, which is sometimes
>listed as a left arrow only, even though you need to set it
>meaningfully on entry.

The tradeoff is between speed and upward compatibility. It's not an
issue of believing the arrow in the documentation, but also suffering
through some of the undocumented changes, and subsequently having
calls drop through into the MFS case. In my judgement, this is
more than likely Mr. Ishizaki's problem.  Note also that errors exist 
in the docs.

--Cy--
cy@dbase.a-t.com