PDP-11/93 Console Pinout and model rev.

From: Doc <doc_at_mdrconsult.com>
Date: Fri Apr 12 01:39:59 2002

On Thu, 11 Apr 2002, Doc Shipley wrote:

> Does anyone have the pinout for the db25 console port? Assuming that
> the 25-pin bulkhead connector marked "Console" is a serial console port?

  Well, with some help from Emanuel and an old post by Douglas Gwyn, I
figured out that the 11/93's console is a "standard" RS232 serial port.
The bulkhead DIP switches were set such that the console port was
disabled, which threw me for a while, and one of my DB25-MMJ adapters
has died, which threw me off for a _long_ while, but I finally got a
boot monitor, and then brought up the OS. RSX-11M+
  Drat. I was hoping for Windows 2000.

  Damn thing didn't come with ethernet, either.

> Also, I understand that a M8981-AA is a 2M board
and a -BA is a 4M > board. How do I find out which?

  Boot monitor says 4M, but I had already figured that out from the
little barcode sticker on the BA23. It says "*11Z93-BA*"

  So will this guy boot from Tim Shoppa's RT-11 CD?


        Doc, who is thrilled beyond belief
Received on Fri Apr 12 2002 - 01:39:59 BST