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From: john@chinet.UUCP (John Mundt)
Newsgroups: comp.unix.wizards,comp.unix.questions
Subject: Re: Baud-sensing 'getty'
Message-ID: <1675@chinet.UUCP>
Date: Sat, 3-Oct-87 22:44:05 EDT
Article-I.D.: chinet.1675
Posted: Sat Oct  3 22:44:05 1987
Date-Received: Wed, 7-Oct-87 03:22:14 EDT
References: <7440@steinmetz.steinmetz.UUCP> <267@usl>
Reply-To: john@chinet.UUCP (John Mundt)
Organization: Chinet - Public Access Unix
Lines: 33
Xref: mnetor comp.unix.wizards:4669 comp.unix.questions:4387

In article <267@usl> elg@usl (Eric Lee Green) writes:
>in article <7440@steinmetz.steinmetz.UUCP>, davidsen@steinmetz.steinmetz.UUCP (William E. Davidsen Jr) says:
>> In article <467@devon.UUCP> paul@devon.UUCP (Paul Sutcliffe Jr.) writes:
>> |In article <1336@dasys1.UUCP> manes@dasys1.UUCP (Steve Manes) writes:
>> |> Does anyone have, or has anyone played with writing, a getty that
>> |> eliminates tty users having to cycle through gettydefs with a hardware
>> |> break?  My system will soon be traveled by folks who won't have a clue
>> 
>
>[various ideas about using CRs for auto-bauding, using CRs for
> cycling thru baud rates, etc.]
>--
>Eric Green  elg@usl.CSNET       from BEYOND nowhere:
>{ihnp4,cbosgd}!killer!elg,      P.O. Box 92191, Lafayette, LA 70509
>{akgua,killer}!usl!elg        "there's someone in my head, but it's not me..."

I hacked getty to wait on CR's sent to it before it output anything,
and it works fine.  The only problem, of course, is getting the users
to bang away at the return key until the modem cycles to the right
speed.  Not to hard to program, since you just put it in a loop where 
it listens for two characters and if neither are carriage returns, it
moves to the next speed.

The important part is to keep getty from outputting the login message
until the right speed has been established.  Failure to do this tends
to lock the receiving terminal because it interprets the incoming
garbage as being legitimate screen control codes.  My WYSE50 is
especially guilty of this.

John Mundt
Teachers Aide, Inc.        !ihnp4!chinet!teachad!fred
---------------------------
My opinions reflect that of the company 'cause I *OWN* it!