21 Feb
2012
21 Feb
'12
4:19 p.m.
On 02/21/2012 06:39 PM, Kelly D. Leavitt wrote:
I have a PDP 11/03 that used to be part of the startup
for an 11/780 at
the University of Arkansas at Fayettville. The 780 has long ago been
scrapped.
*sniffle*
So, the 11/03 has the following boards:
M8017-AA : DLV11-E/EC Single-line async control module (Replaces
M8017,M8017-YB) Renamed DLVE1
M7940 : DLV11 Serial Line Unit (SLU, Async)
M7944 : MSV11-B 4-Kword 16-bit MOS RAM
M7946 : RXV11 RX01 8" floppy disk controller
M9400-YE : Bootstrap terminator
All good. Make sure you have ROMs on the REV11-E (M9400-YE). I
don't recall if they're typically socketed or not.
I also have the RX01 drive. So, other than media, what
other options do
I need to get this running as an 11/03? Where is the best place to get
some basic media images? Is it possible to create boot media on the 8"
drives I have connected to my PC using IMAGEDISK, 22DISK or the
catweasel?
You should be able to create usable RX01 disks (which are ordinary
SS/SD, IBM 3740-compatible format disks) with a standard 8" drive if you
have a way to control it. I've not done this with a PC, but I'd imagine
the tools you mentioned should work fine. Personally I use an RX02
connected to a PDP-11 running 2.11BSD, so I just FTP a disk image over
and dd it to the drive. (haven't even had to do that in a while, since
I rarely use floppies on PDP-11s)
As far as what other stuff you need, you're good except for memory.
Even RT11SJ (the "single job" monitor) (v5.3) appears to require 16kw of
memory, at least from my tests awhile back.
In practical terms all you'll really be able to run on that machine
is RT-11. I'm not saying that as if it's a bad thing, mind you. You
can get RT-11 boot disk images for the simh emulator; those are "raw"
disk images which you can write directly to a floppy (assuming RX01 vs.
RX02) and they'll work. If you have trouble finding that stuff, let me
know and I'll make one up for you quickly.
I know a lot of these questions are answered out
there, but I've not
seen (yet) a simple step by step to get one of these running.
That's because you're supposed to just KNOW! ;) (yeah, that's the
way it seems...the only way I "just know" is because I got my first one
a few decades ago, and was lucky enough to get all the documentation!)
I have the opportunity to get a couple of memory
boards also:
M8044-DB 32K, 16-BIT RAM for LSI-11
M8044-DE 32K, 16-BIT RAM for LSI-11
So, will these work with this 11/03? It seems they will, but I was
looking for verification.
Yes, they should be fine.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA