Path: utzoo!attcan!uunet!cs.utexas.edu!rutgers!ispi!jbayer
From: jbayer@ispi.UUCP (Jonathan Bayer)
Newsgroups: comp.unix.xenix
Subject: Re: Xenix 386-AT system reboots when modem is turned off.
Message-ID: <1298@ispi.UUCP>
Date: 8 Feb 90 12:26:33 GMT
References: <1990Feb7.140354.15938@bluemtn.uucp>
Organization: Intelligent Software Products, Inc.
Lines: 34

perry@bluemtn.uucp (Perry Minyard (3MTA3)) writes:


}Im running SCO XENIX 386 2.3.3-AT using a 20MHZ 80386 "DYNA" machine with
}4 meg ram, and an 80 meg seagate drive.   I have a Hayes 9600 baud V Series
}modem attached to COM1 (tty1A).   

}If I turn the modem off while the operating system is up and running, 
}the machine does a cold boot.   This also happens on another machine which
}is a 33 mhz 80386 using the same type of serial card and modem and OS. 

}The card is a generic "SUNTEK" serial card with just one serial port.

[ deleted ]

}I also have the same type of serial card and 33mhz machine running at my office
}under SCO XENIX 386 2.3.3 (GT Version (for a SCSI drive), and it doesn't reboot
}when the modem is turned off.  All three computers, modems, and serial

[ more stuff deleted ]


It sounds like you might have a bad serial card.  Somehow the serial card is
triggering a hardware reset when the modem is turned off.  Try replacing the
serial card or even swapping it with the one at the office and see what
happens.



JB
-- 
Jonathan Bayer		Intelligent Software Products, Inc.
(201) 245-5922		500 Oakwood Ave.
jbayer@ispi.COM		Roselle Park, NJ   07204