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Newsgroups: comp.os.386bsd.misc
Path: sserve!newshost.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!elroy.jpl.nasa.gov!swrinde!cs.utexas.edu!geraldo.cc.utexas.edu!portal.austin.ibm.com!willcox!obiwan!bob
From: bob@obiwan.uucp (Bob Willcox)
Subject: Re: Using the sio ports for terminals w/o modem ctl signals
Organization: Bob's Place, Austin TX
References: <1872@dcsc.dla.mil>
Message-ID: <CBJnzu.6nG@obiwan.uucp>
Date: Tue, 10 Aug 1993 12:57:15 GMT
Lines: 24
What about using sio on locally attached terminals connected through
a multi-port card (BocaBoard BB1008) that only has TX, RX, RTS &
CTS signal connections (via RJ-11 connectors)? In theory (I believe)
one only really needs the TX & RX signals for local terminals (I
have been using XON/XOFF flow control with them) and ground. (In
fact, thats the only three signals I have connected through their
cables.)
Problem seems that since this board does not provide the DTR & DCD
lines I can't use the trick of wiring DTR to DCD at the computer
cable end as I have successfully done with my other serial cards
(that have full modem control lines). I have looked through the
getty and sio code (and read much of this thread) but still do not
know if setting CLOCAL will solve the problem (or, for that matter,
exactly how I can effectively set CLOCAL so that it is always on
for these ports).
Any pointers, help, advice would be greatly appreciated.
Thanks,
--
Bob Willcox ...!{rutgers|ames}!cs.utexas.edu!uudell!obiwan!bob
Phone: 512 258-4224 (home)
512 838-3914 (work)