5 Feb
2012
5 Feb
'12
9:24 p.m.
Glen,
Thanks, once again proves I have eyes and cannot see.. I had these manuals
but did not see (read thoroughly).
Any info on the SLU for a MVII or MicroVAX 3800 in a BA215? These
are the SLU's I have. I also have a Fluke meter, paper and pencil as well
and
will prpbably ring out the cables and connectors.
Thanks again,
Dan Snyder
Butler, PA USA
----- Original Message -----
From: "Glen Slick" <glen.slick at gmail.com>
To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
Sent: Sunday, February 05, 2012 3:39 PM
Subject: Re: PDP 11/83 SLU - pin outs for J1 and J2
On Sun, Feb 5, 2012 at 8:57 AM, Daniel Snyder
<ddsnyder at zoominternet.net>
wrote:
I have looked high and low it seems for documents
that detail
the pinout of J1 on a KDJ11-B cpu module. The manual I have
shows that J1 is the SLU connection and J2 is for baud rate and
status LED's. I have SLU's for MicroVAX II's and 3800's. Both
of these have the right pin counts but by no means indicates the pinout
is compatible. Pinout diagrams would prevent me from letting out the
magic
smoke on my only 11/83 CPU module.
Some references:
http://www.bitsavers.org/pdf/dec/pdp11/1173/EK-KDJ1B-UG_KDJ11-B_Nov86.pdf
Page 2-3, Figure 2-2, Pin Assignments for Connectors J2 and J3
Page 2-4, Table 2-2, J2 and J3 Connectors
http://www.bitsavers.org/pdf/dec/pdp11/1184/EK-1184A-TM-PR2_May85.pdf
Page E-2, To J1 on KDJ11-B (CPU) <-> CONSOLE DIST BOARD
http://www.bitsavers.org/pdf/dec/qbus/EB-23144-18_QbusIntrfs_1983.pdf
Page 284, 4. Pin out on the 2x5 pin connector block on the DLV11-J
Pin 2, Pin 5, Pin 9 Signal ground tied together, Connect to DB25 Pin 7
Pin 3 TRANSMIT DATA+ Connect to DB25 Pin 2 RXD
Pin 4 TRANSMIT DATA- Tied to signal ground (is this correct?)
Pin 7 RECEIVE DATA- Tied to signal ground
Pin 8 RECEIVE DATA+ Connect to DB25 Pin 3 RXD
Pin 10 +12V Connect (through resistor) DB25 Pin 20 DTR
Page 285, Figure 7, BC21B-05 Modem Cable