Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cwjcc!gatech!ncar!tank!oddjob!rfl
From: rfl@oddjob.uchicago.edu (Bob Loewenstein)
Newsgroups: comp.sys.mac.programmer
Subject: serial question
Message-ID: <5727@tank.uchicago.edu>
Date: 9 Oct 89 18:40:38 GMT
Sender: news@tank.uchicago.edu
Reply-To: rfl@oddjob.UChicago.EDU (Bob Loewenstein)
Organization: U of Chicago - Astronomy & Astrophysics
Lines: 15


I have a program where I use the serial driver at 19200 baud. I
set the size of the internal buffer to a large block so that I don't
miss any transmissions while I'm not reading the port (64 bytes, the
default, is too small). My problem is this: If someone using the program
decides to open up some terminal emulator desk accessory, or switches
via multifinder to another program that wants the port, when they
switch back to my application, always my buffer is no longer used and
the default is back; sometimes it screws things up altogether and
causes a bomb.

How can I manage the port for these user switches? If I knew when they
returned to my program, I could reinitialize the port. 

Any comments would be appreciated.