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From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: Ada way to read/write to character file
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>Michael wants to use a serial device for (bidirectional) sequential text I/O.
>...
>> > I want to communicate with a device hanging on the RS232 port. I have
>> > to write to the device and read the answers.
>made damn sure it could be used (bidirectionally) with the character devices,
  Given timing, error conditions, dropped lines, and the likelihood of
non-text data, I wonder how often you would actually want to do
"sequential text I/O" on an RS232 port.  There's also the question of
where do you specify parity & baud rate.  It's not hard to write a
package to do buffered input and output, though it varies quite a lot
across OSes.  It may also be that the compiler vendor has supplied one
solution.