NetNews Usenet Archive 1992 #31/NN_1992_31.iso/spool/comp/sys/apollo/4178

Text File | 1992-12-24 | 1.8 KB | 41 lines

Newsgroups: comp.sys.apollo
Path: sparky!uunet!nwnexus!lampi
From: [e-mail] (Michael Lampi)
Subject: Re: Need info on old DSP90 card
Message-ID: <[e-mail]>
Keywords: DSP90, Systech, MTI
Sender: [e-mail] (System Security Officer)
Organization: Northwest Nexus Inc. [phone]
References: <MSX=[e-mail]>
Date: Thu, 24 Dec 1992 06:32:41 GMT
Lines: 28

[e-mail] (Andrew F Gunnesch) writes:

>I was going through some old boards in my drawer here and came across
>one that has me stumped:  It's made by systech, and is labelled as
>MTI 900/1600  50-000004-9.  The numbers lead me to believe that it is
>an old tape controller card.  It has a single 50-pin connector at the
>top along with 10 LEDs, a 5-pin socket labelled J2, and a normal/diag
>switch.  It also has 4 separate 8 switch DIPs on-board.  Anybody know
>what this beast is?  The 800/1600 led me to believe low density tape
>controller, but it's not a Pertec interface (needs 2 cables, not 1).
>Help!
>--

Sounds like you hit a real treasure trove! This choice jewel is a
Multibus board that should have associated with it a black rack-mount
style panel chock full o'DB-25 connectors. This panel should have
either 8 or 16 such connectors, and a ribbon cable hanging out one
end. The cable plugs into the Multibus board. There is a round power
cable that plugs into the J2 connector. The LEDs display a nifty
pattern when everything is properly connected and the board has gone
through its self-test.

Ok, so what is it? It is a serial port multiplexer. This was the same
board that Danford first used for its SEU products on DSP-80's, etc.
--
Michael Lampi         [e-mail]
MDL Corporation       15301 NE 90th Street, Redmond, WA 98052
                      [phone]    [phone] FAX