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From: karcher@toron.waisman.wisc.edu
Newsgroups: comp.sys.dec
Subject: RE: KA820 processor's serial lines, what use?
Message-ID: <26APR91.19245964@toron.waisman.wisc.edu>
Date: 27 Apr 91 00:24:59 GMT
References: <1991Apr26.181122.12239@iplmail.orl.mmc.com>
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Organization: MIT PLASMA FUSION CENTER
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In a previous article, carlm@iplmail.orl.mmc.com (carl morris) wrote:
>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?

These are real live serial ports you can do anything you want with. The
following VMS SYSGEN commands will make them appear.

	SYSGEN> CONNECT SLU=1
	SYSGEN> CONNECT SLU=2
	SYSGEN> CONNECT SLU=3
	SYSGEN> CONNECT SLU=4

They will then appear as TCA0, TCB0, TCC0, TCD0.

Carl Karcher                          Internet: KARCHER@WAISMAN.WISC.EDU
Waisman Center                        Bitnet:   KARCHER@WISCMACC
University of Wisconsin-Madison       PSTnet:   (608) 263-5896