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From: hedrick@topaz.rutgers.edu.UUCP
Newsgroups: comp.unix.wizards,comp.unix.questions
Subject: Re: Baud-sensing 'getty'
Message-ID: <15288@topaz.rutgers.edu>
Date: Sun, 4-Oct-87 01:18:18 EDT
Article-I.D.: topaz.15288
Posted: Sun Oct  4 01:18:18 1987
Date-Received: Sun, 4-Oct-87 07:45:15 EDT
References: <7440@steinmetz.steinmetz.UUCP> <267@usl>
Organization: Rutgers Univ., New Brunswick, N.J.
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Xref: utgpu comp.unix.wizards:4332 comp.unix.questions:3926
To: elg@usl.uucp

I don't recall anyone mentioning that 4.3's getty seems to have code
in it to detect the speed automatically based on how a CR gets
mangled.  It claims to be able to detect speeds from 300 to 9600.  The
particular patterns may depend upon how the modems are set and the
serial controller used, but on every machine we have tried, the
pattern is consistent for the given machine.  Similar schemes have
worked for us on the DEC-20, Pyramid (BSD), and on our Cisco terminal
servers.  I can't swear that the 4.3 code works, since our dialups are
all on terminal servers now, but as of a couple of years ago the
Pyramid getty autobauded correctly, and they seem to be using the 4.3
code.