Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!longway!std-unix
From: guy@auspex.uucp (Guy Harris)
Newsgroups: comp.std.unix
Subject: Re: Standards Update, IEEE 1003.1: System services interface
Message-ID: <624@longway.TIC.COM>
Date: 5 Apr 90 17:58:11 GMT
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From: guy@auspex.uucp (Guy Harris)


>(``What are split baud rates?'' the American reader is asking.

Which is kind of amusing; they were put into one of the "termios"
section drafts at the suggestion of a Canadian, and the person who
initially put them in there was a US citizen who was quite aware that
UNIX (a system most if not all of whose original creators were also US
citizens) used to support them....

UNIXes with a V7-flavored tty driver (V7 itself, BSD) supported them;
the people who did the S3 tty driver decided not to include support for
them.

It seems that much newer hardware doesn't support them - serial port
chips don't seem to allow the input and output baud rate to be set
separately - but older hardware did.  Do systems sold in Europe have
serial port chips that support split baud rates?

Volume-Number: Volume 19, Number 54