VAXserver 3100

From: James W. Brinkerhoff <>
Date: Thu Jan 9 15:23:00 2003

Actually, I found the MMJ cable and a 9pin RS-232 adapter (I had been given it along with the machine and some other random DEC stuff... I remembered last night as I was drifting off to sleep and found it buried in my cable collection...

Got the thing to boot too! It's a KA41-B and everything looks to be in working condition... I had to remove one of the boards (controller for the CDROM?) and reconnect 2 of the drives to the other controller to get it to see the remaining 2 drives and thus boot off DKB0 ... It boots into OpenVMS 7.0 but alas I have no knowledge of the SYSTEM password.

Does OpenVMS boot single user without a password? (I doubt it, from what I gather VMS is pretty tight security wise)

I'd rather not reinstall VMS right away since I'd like to see if I can figure out where the box originally came from, and what it was being used for... Kinda curious bout that.


On Thu, 9 Jan 2003 10:13:00 EST wrote:

> To find DEC MMJ cables, go to
> and look for keywords DEC MMJ.
> You will probably need at male-male MMJ and a female MMJ to DB9/DB25.
> AS with any serial connection, verify pins (on a DB-25) 2-7 and 3-7 (i.e.,
> make sure terminal/PC is transmitting on one line, DEC VAX is transmitting on
> the other). I usually do this with a VOM; transmit will be a strong (5-15
> VDC) signal; receive may be around 0.
> Usually you will get a >>> prompt from VAX firmware. It will accept a help
> command and you can do "show devices", then try "boot dua0:" or some other
> disk device that's listed (they are 99% devices beginning with "d").
> Of course you may get a very first product/CPU ID, then some testing
> messages. You are hoping that it progresses through the self-tests and gets
> you to the >>> firmware prompt. Often >>> will take a "help" command too.
> Often you need to send "delete" and not "backspace." Try 9600/8/N/1 settings.
> Also probe the Compaq, Montagar, and Process sites. With the VMS hobbyist
> program you can get going pretty well these days.
Received on Thu Jan 09 2003 - 15:23:00 GMT

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