Path: utzoo!mnetor!uunet!husc6!tut.cis.ohio-state.edu!mailrus!nrl-cmf!ames!pasteur!ucbvax!carleton.EDU!BARMSTRO
From: BARMSTRO@carleton.EDU (Pod Stolom Consulting)
Newsgroups: comp.os.vms
Subject: Regarding KA820 asynch comm ports on an VAX 8250
Message-ID: <8803211600.AA01467@ucbvax.Berkeley.EDU>
Date: 17 Mar 88 18:23:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 23

I had this same set of questions myself when I wanted to connect a dial-in
modem to our 8250 for RDC. The KA820 is the CPU's I/O interface, which seems
reasonable enough since the console is part of this module. The three lines
above the console are called Synchronous Line Units and are devices are
TCA0, TCB0, and TCC0.  They are not standard devices as far as SYSGEN is
concerned -- to connect them, issue the commands: 
                                               
	SYSGEN> CONNECT SLU=1	! connects TCA0
	SYSGEN> CONNECT SLU=2	! connects TCB0
	SYSGEN> CONNECT SLU=3	! connects TCC0

I got all this information from my field rep.  I couldn't find any mention
of them in the documentation set.

+-----------------------------------------------------------------------+
| Borden Armstrong                               Computer Center        |
| System Manager and                             Carleton College       |
| Academic Programmer/Analyst                    1 North College Street |
|                                                Northfield, MN  55057  |
| barmstro@carleton.edu                                     U. S. A.    |
| ...!umn-cs!stolaf!agnes!ccnfld!barmstro        (507)663-4277          |
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