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From: alan@shodha.dec.com ( Alan's Home for Wayward Notes File.)
Newsgroups: comp.unix.ultrix
Subject: Re: Decserver Question
Summary: Associateing LAT ports with /dev/ttys
Message-ID: <225@shodha.dec.com>
Date: 21 Jun 89 16:34:02 GMT
References: <3264@buengc.BU.EDU>
Organization: Digital Equipment Corp. - Colorado Springs, CO.
Lines: 48

In article <3264@buengc.BU.EDU>, marco@buengc.BU.EDU (Marco Zelada) writes:
> Problem statement:
> 
> 	I want to make a GPX station running Ultrix 3.0 use a PS printer that 
> has been configured off of a decserver.
> 
> 	a) 	I have created the PRINTCAP entry for the new printer in which 
> 		I tell lpd the LAT device and LAT port on which the PS printer 
> 		is connected.

	In Ultrix V3.0 there are two ways of associating a terminal
	server port with a special device.  One limits it's use to lpd
	and the other makes the port available for general access.
	They are:

	    1.  :ts=terminal-server: and :op=port-name:  This tells
		lpd how to connect to the port.

	    2.  The -h option on lcp(8) will let associate a lat
		port with a special device file.  For example:

			lcp -h /dev/tty00:TS1:TS1_1

		This lets anything that can open /dev/tty00 write
		to and read from the terminal server port.
> 
> 	c)	Now I need to make a node under /dev for the new printer, 
> 		however, I can not figure out how to create the node and give
> 		ultrix enough information about the LAT device and port number
> 		when I create the node. I have tried MAKEDEV and mknode, but I 
> 		always get an errors from them. Besides, I do not understand 
> 		where to include the LAT device address and port number if I am
> 		using these commands.

	The device name for LAT ttys is lta#.  So for the first set
	of 16 LAT ports you'd use MAKEDEV lta0.   If you included
	LAT support during the installation of V3.0 it should have
	created one set for you.  Unless you have other comm devices
	on the system they will ordinarly start at tty00.  You can
	use file(1) to determine what device a special is associated
	with.
> 
> Question:
> 
> 	What am I doing wrong ?

	In c) you mentioned getting errors from the MAKEDEV.  What
	were the errors?