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From: carlm@iplmail.orl.mmc.com (carl morris)
Newsgroups: comp.sys.dec
Subject: KA820 processor's serial lines, what use?
Message-ID: <1991Apr26.181122.12239@iplmail.orl.mmc.com>
Date: 26 Apr 91 18:11:22 GMT
Sender: carlm@iplmail (carl morris)
Organization: Martin Marietta
Lines: 10

The lab I work for recently inherited a VAX 8350 system.  Looking through
the KA820/KA825 Processor Technical Manual that came with it, one of my 
maintenance gurus came across a section (page 2-8) that references four
serial line units which are on the cpu board.  There must be some reason
for putting those ports on the board ("Hey, Bob, we got this corner left
over on the cpu board..."), anyone have any ideas?  Was it primarily for
maintenance diagnostic access, or are there some useful end-user type
uses for them?

                         Thanks for any suggestions -- Carl