Subject: Re: Does anyone have the specs for wiring DEC MMJs
To: Gregg C Levine <>
From: Johnny Billquist <bqt@Update.UU.SE>
List: port-vax
Date: 02/23/2005 17:49:22
On Wed, 23 Feb 2005, Gregg C Levine wrote:

> Hello from Gregg C Levine
> As of two days ago, I now have here a VAX Station 3100 Model 76. It
> looks like the one that Chuck McManis has photos of, on his website,
> but is definitely different in that mine will be run using a serial
> console as opposed to wearing a monitor and keyboard. I'll probably
> pull the frame buffer out of the unit.
> That being stated, I was able to identify the ports on the machine's
> back, and naturally the serial port is a DEC MMJ. Now the question:
> Does anyone have the specifications for wiring a DEC MMJ? I have a
> computer who's wearing the usual serial port on his back, and I need
> to create a cable that's got an RS232 connector on one end and a DEC
> MMJ on the other. Incidentally the computer who will be posing as the
> console will be a Compaq Portable III.

Very quick googling gave this:


Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email:           ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol