Hi All:
I'm in Ottawa, and on my obligatory trip to the computer salvage place,
picked up an M8190 Unibus 11/84 card.
It's a 4-finger LSI board, connectors for console and likely a cabinet kit
of some sort.
I'd like to try this board, my questions are:
1. Any other support boards needed, or will this board run standalone,
presuming available RAM?
2. What kind of backplane is required? I have an 11/45 backplane but this
wouldn't do because of the extensive point-to-point wiring for the CPU
cards, etc.
3. Any way to run this is the "straight through" section of the Unibus
that exists in the high slot numbers of older Unibus' like the 11/45?
4. Is anybody else using this card successfully?
Thanks in advance,
Kevin
--
Kevin McQuiggin VE7ZD
mcquiggi(a)sfu.ca
>However, no matter what I try I can't get them (RX33's) to work when the ESDI
>controller is in place. On that note I'm giving up on this line of attack
>at least for the time being.
It sounds to me like you've got a backplane DMA continuity grant problem.
What cards are in the backplane? What slots are they in?
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology Voice: 301-767-5917
7328 Bradley Blvd Fax: 301-767-5927
Bethesda, MD, USA 20817
Hi everybody,
I made my first major equipment move today. It was a System/34 system
unit (5340), a System/36 system unit (5360), two band printers (3262), and
two tape drives (8809). About 5,000 lb. as near as I can figure. Nothing
fell over or hurt anybody- very encouraging for the next move (although
now I'm out of room!)
My biggest, burning question is this: How do you get those darn covers on
the side of the S/36 open? All it has is a little 1/4" long slot.
Probing around inside was completely fruitless. I can see a black plastic
piece inside through the slot, but pushing, pulling, lifting, or pushing
down on it doesn't do anything.
Any help would be much appreciated.
Richard Schauer
rws(a)ais.net
I am sorting out my DEC cards, figuring out which ones will be included on
my upcoming "junk sale" list. I came across a Unibus card made by Emulex,
and I can not figure out its model number!
It has two 50 pin connectors on the end, along with one red LED and a 4
place DIP switch. Near the middle of the board are two 10 place DIP
switches. Notable chips include a 2901, six 24 pin ROMs, a 40 pin DIP with
a sticker over it, and lots of glue.
What is this thing called? I would like to get a good idea before I stick
it into the sale.
William Donzelli
william(a)ans.net
>I'm in Ottawa, and on my obligatory trip to the computer salvage place,
>picked up an M8190 Unibus 11/84 card.
>
>It's a 4-finger LSI board, connectors for console and likely a cabinet
>kit of some sort.
Both connectors connect to the same cab kit... though it isn't required.
The console terminal baud rate can be set in the switches on the board,
and the on-board LEDs will display the state which would be displayed
in the cab kit LED display...
>I'd like to try this board, my questions are:
>
>1. Any other support boards needed, or will this board run standalone,
>presuming available RAM?
Memory... any qbus memory will do if all you want is to get the machine
up and running. A 2x5 to DB25 connector for the console terminal.
A console terminal. A disk interface. A QBUS system box, or an 11/84
system box (which is qbus in the first part).
>2. What kind of backplane is required? I have an 11/45 backplane but this
>wouldn't do because of the extensive point-to-point wiring for the CPU
>cards, etc.
Sorry, the board plugs into a QBUS portion of the 11/84 system box. It
will not plug into a unibus.
>3. Any way to run this is the "straight through" section of the Unibus
>that exists in the high slot numbers of older Unibus' like the 11/45?
Nope...
>4. Is anybody else using this card successfully?
In qbus machines - yes... several of my systems are 11/83s (KDJ11-B
at 18mhz, with PMI memory). I've even modified one to be running
at 20mhz (mentioned in another message) -- I call it an 11/83plus.
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
>To further complicate matters, within digital the CPU is identified
>differently based on whether it has PMI memory installed or not.
>(And, of course, it matters whether the PMI comes before or after
>the CPU in the backplane!) So, for example, you may find a 18 MHz
>CPU with non-PMI memory called a 11/73, but with PMI memory it's called
>a 11/83.
In fact... you could find the system with PMI memory, but installed
in the wrong place, and it will be identifed - by software - as an
11/73B. If you put the same memory in the right place, it will be
identified as an 11/83.
>If, indeed, you have the 11/84 capable version, you'll also need the
>KDJ11-B and the 11/84 backplane, along with PMI memory, to have a
>real 11/84 CPU.
But the board with Qbus memory in the qbus of an 11/84 system box
should work...
I've also taken one of the KDJ11-B 18mhz boards, removed the 18mhz
clock and replaced it with a 20mhz clock... the boot ROM correctly
identifies the clock speed, and the system runs rock solid...
be warned - not all boards will do so, from what I understand...
your milage may vary... etc... If you make the change and it doesn't
work, don't blame me... (save the old clock).
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
>> Actually, even though it came out of a Unibus machine, it's a Qbus CPU
>> card.
>
>I assume that you mean it's a Unibus version of the 11/73. I can't
>imagine that it would be usable in a Q bus backplane. The pinouts are
>quite different!
Nope, the KDJ11-B which plugs into an 11/84 can also be plugged into a
Qbus box and work... The fact is that the 11/84 actually has two buses,
the qbus, on which the processor and memory reside (as well as the
q-u bus converter), and the unibus, in which the rest of the options
reside.
(Yes, Tim is right about the official boards which go in specific
boxes and are marketed and sold as specific systems)
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
>So this is a Q bus card, that can be plugged into a Q bus backplane
>without smoke generation??
Sure is...
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
