Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!helios!eemips!loh
From: loh@eemips.tamu.edu (Kou-Hung Loh)
Newsgroups: comp.sys.hp
Subject: Using the Serial Port
Message-ID: <10155@helios.TAMU.EDU>
Date: 16 Nov 90 19:33:54 GMT
Sender: usenet@helios.TAMU.EDU
Organization: Texas A&M University, College Station
Lines: 19

I need someone help me to configure the built-in serial port on
a HP9000/300.  I am planning to connect a "listen-only" circuit
board to this port to receive commands from the workstation.
I have implemented this connection on a VECTRA PC by using its
COM1 port configfured to: (9600bps, 8bits, 1stop bit, no parity)
, and now I like to switch to the workstation.
There is one device file called "serial9" addressed to that port
in /dev/rmb (major number:1 , minor number:0x090004).  But when
I cated a text file redirecting to this file, I found nothing happened.
I know I may need to use "stty" to set termio, and I just don't know
how to do it properly.

Any comments/suggestions will be highly appreciated.

Lawrence Loh
Department of Electrical Engineering
Texas A&M University
(Voice) (409)845-7486
(Fax)   (409)845-7161