Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!fernwood!portal!cup.portal.com!Azog-Thoth
From: Azog-Thoth@cup.portal.com (William Thomas Daugustine)
Newsgroups: comp.sys.dec
Subject: M7847 16k Unibuss memory questions
Message-ID: <43481@cup.portal.com>
Date: 19 Jun 91 23:55:46 GMT
Distribution: na
Organization: The Portal System (TM)
Lines: 27


About a week or so ago, I posted that I needed help in bringing
my PDP-11/34a back to life. With my description as I know it, the
many people who responded suggested that I had a memory addressing
problem. Better late than never, I looked at it today, and need
help on setting a 16k memory model, so itll live at 0x0000.

In a brilliant flash of ignorance, I stupidly thought, for some reason,
that memory didnt need to live in a specific address range... (majik!)
Anyways, I need some help in setting the DIP switch pack(s) for an 
M7847 module so itll live at the first address, and the first available
CSR (if I need to even set the CSR?). This is going to be the only 16k
module in the machine, I want to bring it up in a minimal configuration
before I go messing with it. I do have 8 other memory boards, for a 
total of 144k, but I dont wish to use these. Eventually, when I can
be sure that the minimum is working, Ill put in a 128kw memory module,
and free up that many slots (even free up a whole backplane! 9 modules,
9 slots!)

Thanx 

Billy D'Augustine
Azog-Thoth@cup.portal.com

PS: in a side question: what is the model number of the Floating Point
Unit thatll run in an 11/34a? And does it need to live in a specific
slot, such as the next slot from the main processor cards?