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Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!emory!kd4nc!n4hgf!wht
From: wht@n4hgf.Mt-Park.GA.US (Warren Tucker)
Newsgroups: comp.unix.xenix.sco,comp.dcom.modems
Subject: Re: need modem control lines info
Message-ID: <238@n4hgf.Mt-Park.GA.US>
Date: 20 Nov 90 02:58:33 GMT
References: <1990Nov19.151422.3584@bagend.uucp>
Reply-To: wht@n4hgf.Mt-Park.GA.US (Warren Tucker)
Followup-To: comp.unix.xenix.sco
Organization: Amateur Radio Station N4HGF
Lines: 29

In article <1990Nov19.151422.3584@bagend.uucp> jan@bagend.uucp (Jan Isley) writes:
>
>I need some information on controling and determining the status of
>modem control lines with SCO SYSV/386.  More precisely, I need to:
>
>1. Set DTR on.
open the tty line
>2. Set DTR off.
close the line

This is the only way to manipulate the DTR line.

>3. Set RTS on.
>4. Set RTS off.

These are not directly manipulable.

>5. Determine the state of CD.
>6. Determine the state of CTS.
These are not readable.

You could accomplish these goals by hacking a "public source" driver
such as FAS, but the standard driver, as is true with all standard
System V and BSD drivers, ye are lost.

 
--------------------------------------------------------------------
Warren Tucker, TuckerWare emory!n4hgf!wht or wht@n4hgf.Mt-Park.GA.US
ANSI C should have been named D, or Son of C