Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!claris!apple!han
From: han@apple.UUCP (Byron Han, fire fighter)
Newsgroups: comp.sys.mac
Subject: Serial Drivers (RAM and ROM)
Message-ID: <7312@apple.UUCP>
Date: 2 Feb 88 16:14:44 GMT
Organization: Communication Tools Group - Apple Computer, Inc.
Lines: 17
Keywords: be good please

With regards to the serial drivers...  it is a VERY good idea to close your
serial driver when you are finished.  In other words, using RAMSDopen and
RAMSDClose are strongly recommended.  It is cheesy to leave the drivers open
when your application terminates.  Using the ROM driver does not allow you
to close it without causing people to become sad  :-(

So,  1 - try and use the RAM based drivers
     2 - try not to directly open driver's by refnum (-6, -7, -8, -9)
          use their name if at all possible (.Ain, .Aout, .Bin, .Bout)
     3 - always always always close the RAM based serial driver when
           quitting your application.  There is a means to insure that
           DTR stays high when closing the serial driver.  Documented in
           IM IV.
-- 
------------------------ Byron Han,  Communications Tool ----------------------
     Apple Computer, Inc.  20525 Mariani Ave, MS 27Y  Cupertino, CA 95014
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