console pinout?

From: Greg Linder <fluke_at_mcs.net>
Date: Thu May 6 19:46:36 1999

        Here's the pinout of the not-quite RJ-45 connector on the vax
(In DECspeak it is known as an MMJ port.) Also, if you are intending to
hook a terminal to a VAXstation, you need to plug the terminal into the
port with the printer on it, not the two arrors. I'm not sure about a
2000, but I know this is the case on the 3100. It's 9600 8N1, if I
remember correctly.
        On my 3100 I popped it open and installed a proper RS-232 DB-25
out the back soldered right onto the board. It was worth it, as I don't
have to worry about any silly adapters.
        The following was actually sent to the Port-VAX NetBSD mailing
list by Gunnar Helliesen. This pinout is correct, as I this is what I have
used for my MMJ-based machines.

                -----Attachment-----

 Pin # Signal name CCIT # Mnemonic
-----------------------------------------------------------
    1 Data Terminal Ready 108.2 DTR
    2 Transmit Data 104 Tx
    3 Signal Ground 102 SG
    4 Receive Common --- RxC
    5 Receive Data 103 Rx
    6 Data Set Ready 107 DSR


When viewing the MMJ plug (i.e. the thingy attached to the end of the
cable) from below (opposite side of the "lip"), pin # 1 is the leftmost
pin. Like this:


          --------------------
----------| DTR 1 -|
          | Tx 2 -|
          | SG 3 -|
          | RxC 4 -|---
          | Rx 5 -| |
----------| DSR 6 -| |
          -----------------------




                ---End attach---



                Enjoy,
                Greg Linder
                fluke_at_mcs.net
Received on Thu May 06 1999 - 19:46:36 BST