Kaiser & Damm Qbus memory management boards for PDP11??

[Ragnarock]

Does anyone know what these 2 boards are in my SMS 11x machine?

Kaiser & Damm, MOT 11 D1 with ribbon cable to DB25 on back, has RAM and ROM, 6809, ROMs. CALMOT '83

Kaiser & Damm, MM07 (memory management?) 11.Aug.83

This system has a M8186 KDF11-A CPU board, 8 serial ports, SMS FDC/HD controller and a
1 meg Camintonn CMV1000 memory board in slots 15-16.

There is no data from the DB25 connected to that first board.

 

[cruff]

Do they only use the QBus for power? Doesn't look like many of the QBus signals are obviously connected in the pictures.

 

[pbirkel@gmail.com]

There's more happening on the back: https://www.rogerarrick.com/sms11x/IMG_5657_1000.jpg

Probably enough to respond to some port addresses. Looks like a specialized peripheral-support processor/controller with 10KB SRAM.

 

[Bitly]

For the MOT-11 board, first step would be to dump the ROMs and see if there are any identifiable strings.

The MM07 is doesn't seem like memory management. The KDF11-A should be able to address all of the Clearpoint memory. I would also expect two address buses, one in and one out. Certainly a curiosity.

CW

 

[pbirkel@gmail.com]

The KDF11-A should be able to address all of the Clearpoint memory. I would also expect two address buses, one in and one out. Certainly a curiosity.

Unfortunately his M8186 is missing both the KTF11-AA (Memory Management Unit) and KEF11-AA (Floating Point microcode ROM). Either someone previously harvested the MMU or the presence of the fully-populated Clearpoint memory is, well, overkill. Or that MM07 module really does something related to memory management (although it's hard to believe that developing one was a cost-saving alternative to just populating the M8186 appropriately). Complete system documented at: https://www.rogerarrick.com/sms11x/

 

[Ragnarock]

This SMS X11 machine boots a diagnostic floppy so I have hopes for this hardware - I've completely upgraded the power supplies.
The HD will not boot, just halts.
Any other of the many floppies I have just halt on boot.

 

[anasana]

Hello, please, check the 'KAISER+DAMM' diskette image, received from Ukrainian hobbyist:

KAISERDAMM.zip

Shared with Dropbox

www.dropbox.com

in archive - the .IMD image and .IMG sectors dump (1 side, 35 track, 10 x 256 bytes sectors).
PDP11 files are small and diskette label marked as:
FFFF1 BIN (Anzeige - Test)
FFFF2 BIN (Lichtkopf - Test)
FFFF3 BIN (MPU - Test)
Can it be useful for the board from this topic?
I also interested with description or name of used files structure.

 

[Steve Toner]

I see a 6850 and 1489 on the MOT 11 card, so I'm guessing that the DB-25 connector is a serial port. There's also a 6821 - I didn't trace the connections but that could mean there is more going on on the header than just an RS-232 port...

As for the MM07, it does connect to all the address lines on the QBus. I also see three 74LS175 (Quad D FF) and two 74LS174 (hex D FF) ICs. It's possible that it could be some sort of memory management board designed for 16-bit address processors (e.g. 11/03). But based on the chips I see there, it would only map a single region (or maybe two - e.g., the 74LS174s could each hold the high 6 address bits) of RAM at a time. I do seem to recall a memory expansion board for the 11/04 (Unibus) - not from DEC (but not from Kaiser & Damm either, I don't think) that would map a single 4K region of memory... Those jumpers above the 74LS175 chips that appear to connect to the 74S133 could be setting the I/O address to communicate with the device. All pure speculation on my part, so don't quote me on it