21 Aug
2015
21 Aug
'15
8:54 a.m.
From: Ethan Dicks
That looks like a great haul.
We're talking about the guy on eBay whom I posted a pointer to a couple of
days back, the one with large lots of QBUS CPUs, memory, DLV11s, etc?
I hope they are working cards.
All the ones I've gotten from the guy above which I was able to test (couldn't
test, e.g. the RK05 cards 'cause I don't have a working RK05 yet) were OK -
QBUS memory, 11/23's, etc.
Noel
21 Aug
21 Aug
11:13 a.m.
Hi,
On Fri, Aug 21, 2015 at 11:54:52AM -0400, Noel Chiappa wrote:
I picked up a bunch of the boards too. My results have been mixed, but
for the price and description, I expected some wouldn't work.
1x M8028 - DLV11-F SLU works.
1x Plessey 32kW memory, works.
2x M8186-YA - KDF11-AA, works.
4x M8192 - KDJ11 (AA or AB?) -- two work, two fail POST, with LEDs lit.
4x MMS1132-N3-128 Motorola 128kW memory - undetermined if works.
1x MMS1102-34 Motorola 32kW memory - undetermined if works.
I haven't figured out the jumpers on the Motorola memory boards yet.
As provided, if I plug one in with the KDF11-AA, I fail to even get
an ODT prompt.
I picked up a chassis with bridged 2x8 and 2x12 Qbus backplanes in it
at a hamfest (with a good KDF11-AA and 4xM8044s), so my goal is to
make a pair of small working 11/23 or 11/73 systems. So far, I've got
PDP11GUI successfully running memory tests using microODT via the SLU and
a Windows PC, enough to test out the hardware as per above.
1) I was hoping I could boot XXDP or RT11 from an RX33/RQDX3. The RX33/RQDX3
works in my 11/53, but so far I'm not having much luck with the KDF11 above.
I picked up a M9058 RQDX3 signal distribution board on e-bay from seller efi
(he has one more listed). It's only got one jumper on it, labelled RX50,
which I have in the non-RX50 position. Since none of this has a bootstrap,
I run the bootstrap from ROM provided by a Dilog SCSI card here, but typing
"DU" or "DU0" at the * prompt spins the floppy ever-so-briefly, then
kicks
out an error about no boot media found. Suggestions? Maybe I should try
other bootstrap?
2) I could use PDP11GUI, or other tools to load XXDP via the SLU. If anyone
has already done this and wants to talk to me about it, I welcome some help.
I'm a little confused about what should work and what should not work, with
just the 18 bit qbus. Do I need to wire wrap the additional address lines
to be able to do anything with these KDJ11 CPUs? Does anyone have good
instructions for this modification -- I'll probably want to do it. Do I just
add the additional address lines, or are there other considerations?
Mark
--
Mark G. Thomas (Mark at Misty.com), KC3DRE
From: Ethan
Dicks
That looks like a great haul.
We're talking about the guy on eBay whom I posted a pointer to a couple of
days back, the one with large lots of QBUS CPUs, memory, DLV11s, etc?
I hope they are working cards.
All the ones I've gotten from the guy above which I was able to test (couldn't
test, e.g. the RK05 cards 'cause I don't have a working RK05 yet) were OK -
QBUS memory, 11/23's, etc. 
11:36 a.m.
On Fri, Aug 21, 2015 at 2:13 PM, Mark G. Thomas <Mark at misty.com> wrote:
I picked up a bunch of the boards too. My results have
been mixed, but
for the price and description, I expected some wouldn't work.
Sure.
1x M8028 - DLV11-F SLU works.
1x Plessey 32kW memory, works.
2x M8186-YA - KDF11-AA, works.
Cool.
4x M8192 - KDJ11 (AA or AB?) -- two work, two fail
POST, with LEDs lit.
That was my concern. $50 is a fine price for a KDJ11, but not for a busted one.
Did you scope out the POST code yet?
4x MMS1132-N3-128 Motorola 128kW memory - undetermined
if works.
1x MMS1102-34 Motorola 32kW memory - undetermined if works.
I haven't figured out the jumpers on the Motorola memory boards yet.
As provided, if I plug one in with the KDF11-AA, I fail to even get
an ODT prompt.
They might not be strapped for 0000000. Since they are not DEC, it
might take unearthing manuals or tracing out the circuit around the
jumpers and the upper Qbus memory bits.
Since none of this has a bootstrap,
I run the bootstrap from ROM provided by a Dilog SCSI card here, but typing
"DU" or "DU0" at the * prompt spins the floppy ever-so-briefly, then
kicks
out an error about no boot media found. Suggestions? Maybe I should try
other bootstrap?
Hmm... maybe you could enter the real DEC DU boot from ODT? I
wouldn't trust a Dilog boot to work with a DEC card until I inspected
the code to see what it was doing. If the Dilog card is fully
register-compatible with an RQDX3, it could work, but I'd not assume
it does.
I've always had a BDV11 with my KDF11s, so that's the bootstrap I've
used. I don't think it covers MSCP (I have RL02s and RX02s) so I
haven't been in your exact position of trying to boot an RQDX3 on a
KDF11.
2) I could use PDP11GUI, or other tools to load XXDP
via the SLU. If anyone
has already done this and wants to talk to me about it, I welcome some help.
I have no experience with PDP11GUI. Sorry.
I'm a little confused about what should work and
what should not work, with
just the 18 bit qbus. Do I need to wire wrap the additional address lines
to be able to do anything with these KDJ11 CPUs? Does anyone have good
instructions for this modification -- I'll probably want to do it. Do I just
add the additional address lines, or are there other considerations?
If you want to stick more than 128kW of memory on any of your
processors, you'll need the upper 4 address lines. I've added them.
It's not particularly difficult. If you don't need more than that
128kW, you don't need it. Any 22-bit processor will work on an 18-bit
bus.
-ethan
6 Sep
6 Sep
11:27 a.m.
Ethan Dicks wrote:
On Fri, Aug 21, 2015 at 2:13 PM, Mark G. Thomas
<Mark at misty.com> wrote:
I do have an M8192 and the Motorola 128KW Memory Board from that guy.
The M8192 sometimes worked, sometimes not. After cooling with some
spray in the xtal area I've checked the clock at the xtal and that was
missing most time.
The J11 worked on a KDJ11-DS, so I changed the Xtal. Bingo, it's running fine
now.
For the Motorola MMS1132...the board uses +5VB from the AV1 Pin which is my
H278-A Backplane is not providing. I've soldered a bridge on the card
between AA2 and AV1 (using the vias there) ..still not working and no ODT
prompt. Found out that on the jumper pins near the QBUS connector (E28) two
pairs are slightly bent, but no jumper on them. Looked closer to jims pictures
(imsoldtoys.blogspot.de/2015/08/dec-boards-kdj11-2-kdf11-and-motorola.html)
and found that 2 jumpers on my board are missing. Put the jumpers on them
and now the board ist working at 0 (tested only with the memory address
program from http://www.psych.usyd.edu.au/pdp-11/hints.html, after run
160000 in R1).
At the linked picture above the last jumper on E19 seems to be open, that's
closed on my board originally, but this makes no difference at all, the
board is working with both settings.
Hope this helps,
Holm
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583
www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741
I picked up a bunch of the boards too. My results
have been mixed, but
for the price and description, I expected some wouldn't work.
Sure.
1x M8028 - DLV11-F SLU works.
1x Plessey 32kW memory, works.
2x M8186-YA - KDF11-AA, works.
Cool.
4x M8192 - KDJ11 (AA or AB?) -- two work, two
fail POST, with LEDs lit.
That was my concern. $50 is a fine price for a KDJ11, but not for a busted one.
Did you scope out the POST code yet?
4x MMS1132-N3-128 Motorola 128kW memory -
undetermined if works.
1x MMS1102-34 Motorola 32kW memory - undetermined if works.
I haven't figured out the jumpers on the Motorola memory boards yet.
As provided, if I plug one in with the KDF11-AA, I fail to even get
an ODT prompt.
They might not be strapped for 0000000. Since they are not DEC, it
might take unearthing manuals or tracing out the circuit around the
jumpers and the upper Qbus memory bits.
3157
days inactive
3173
days old
3 comments
4 participants
participants (4)
-
ethan.dicks＠gmail.com -
holm＠freibergnet.de -
jnc＠mercury.lcs.mit.edu -
Mark＠Misty.com