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ExperLink (?) Stuf

	From CWH@MIT-ZERMATT.ARPA Fri May 23 21:58:50 1986
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	Date: Fri, 23 May 86 18:08 EDT
	From: Carl W. Hoffman <CWH@MIT-ZERMATT.ARPA>
	Subject: ExperLink (?) query
	To: nttlab!nojima@SU-SHASTA.ARPA, SLUG@UTEXAS-20.ARPA
	In-Reply-To: <8605230013.AA21361@ntt.junet>
	Message-Id: <860523180855.3.CWH@SNOWBIRD.LCS.MIT.EDU>
	Status: O
	    Date: Fri, 23 May 86 09:13:48 jst
	    From: Hisao NOJIMA <nttlab!nojima@su-shasta.arpa>
	    I heard there is a program for Macintosh that allows us to use single
	    Symbolics with many people  (like Time Sharing System).
	    Is there really such a program ?  (According to him, it is called
	    Experlink.  I suppose it comes from Expertelligence, but it is not
	    available in Japan.)
	I seriously doubt that there is any Macintosh program which does what you
	describe.  Turning a Symbolics machine into a true time-shared multi-user
	system would require a great deal of software to be written for the Symbolics
	machine, in addition to any code which might be running on the Macintosh.
	The Macintosh software you are referring to is probably some program which
	simply utilizes the EVAL server on the Symbolics machine or perhaps one of the
	remote login servers (TTY-LOGIN, TELNET, SUPDUP, or 3600-LOGIN).
	The remote login servers, which were greatly enhanced in Release 6, allow
	multiple terminals to be connected to one Symbolics machine so that multiple
	users can type at the machine simultaneously.  This is not the same thing as
	using the machine as a multi-user Lisp development system.  All of the
	Symbolics program development tools are currently oriented toward having only
	one Lisp programmer using the machine at a time.  Furthermore, most programs
	which utilize the window system cannot be operated remotely.  However, users
	can develop applications which allow multiple users to share the machine
	assuming that certain guidelines are followed.
	Multiple terminals can be connected to the machine by connecting ordinary
	ASCII terminals (or personal computers with terminal programs) to the serial
	ports or by connecting network virtual terminals.  For information on how to
	do this, see the documentation section titled "Remote Login".

ExperLink is a program written by Expertelligence that allows a serial
connection to the Symbolics and a MacIntosh.  Experlink requires software
on both the Symbolics and the Mac.  I have worked with it twice at trade
shows and it works rather nice.  It is NOT any kind of timeshare system.
In fact, the maximum number of ExperLinks that you can have is three (3)
because there are only 3 serial ports on the back of a 367x or 364x.

And again as mentioned previously, there is no software that provides resources
like those on a timeshare, only those provided by remote login and of the
Experlink software.  If you cannot get Experlink in Japan, try contacting
Expertelligence here in the states and request some info.  

Ralph Seibert