Re: Extra chips in PDP11/23 plus cpu board

[Nigel Williams via cctalk]

On Wed, Dec 20, 2017 at 4:45 PM, Douglas Taylor via cctalk
 wrote:
> There is a CPU board for sale on ebay, M8189, and it has the usual 3 chips
> CPU, MMU, FPU.  However, there are 2 extra chips and I've never seen that
> before.

https://en.wikipedia.org/wiki/PDP-11_architecture#Optional_instruction_sets

Microcode ROMs for the CIS (Commercial Instruction Set)

Extra chips in PDP11/23 plus cpu board

[Douglas Taylor via cctalk]

There is a CPU board for sale on ebay, M8189, and it has the usual 3 
chips CPU, MMU, FPU.  However, there are 2 extra chips and I've never 
seen that before.


Anyone know what this is?

Ebay item 122867114663  - Vintage Mint Digital DEC M8189 CPU Module 
Board KDF11-B


Doug

Re: DEC indicator panel mounting details

[Noel Chiappa via cctalk]

> From: Josh Dersch

> See the pictures at the below link: ...
> Hope this is the right assembly for you

Yes, those are _exactly_ what we're looking for. Thanks very much for
taking the time to take those!

Noel

Found another one...

[Chuck Guzis via cctalk]

Discovered a Z-World "Tiny Giant"  SBC220D development board.  Seems to
work; if powered on, the LED blinks. Its a Zilog Z180 board--and I can't
remember a thing about it other than playing with it a bit.

Yours for shipping (it's about 5x6") and should fit in a USPS small FRB.

--
While I'm at it, any interest in Neoware thin clients?  I've got a few;
they're set up for CF card as hard disk, but most have 5GB microdrives
installed.

How about 3-button serial mice?

Cheers,
Chuck

Re: DEC indicator panel mounting details

[Ethan Dicks via cctalk]

On Tue, Dec 19, 2017 at 5:36 PM, Josh Dersch via cctalk
 wrote:
> On Tue, Dec 19, 2017 at 2:25 PM, Josh Dersch  wrote:
>
> See the pictures at the below link:
>
> https://1drv.ms/f/s!Aqb36sqnCIfMotpQIuc2-tDUva3iBw
>
> It looks to be fairly straightforward; the plastic "ball on post" brackets
> are mounted to the rack rails, and there are metal brackets that screw into
> the BOP brackets that hold the PCB/lamp assembly.

Those look like what I have.

-ethan

WTB: M8360 Omnibus Data Break Interface

[Charles Dickman via cctalk]

Does anyone have a M8360 they are willing to part with?

Let me know offline.

-chuck

Re: Vaxstation 4000 m60 and NetBSD

[Charles Dickman via cctalk]

On Sun, Dec 17, 2017 at 7:09 AM, Marco Rauhut via cctalk
 wrote:
> Thanks for your quick answer!
>
> Hardware support say no support for LCG Graphics :-(
>
> Marco

There are a few people willing to work on graphics for old
vaxstations, but there is no documentation.

If anyone has documentation, the netbsd vax port mailing list would be
very interested.

-chuck

Re: DEC indicator panel mounting details

[David Bridgham via cctalk]

On 12/19/2017 05:36 PM, Josh Dersch via cctalk wrote:
> See the pictures at the below link:
>
> https://1drv.ms/f/s!Aqb36sqnCIfMotpQIuc2-tDUva3iBw
>
> It looks to be fairly straightforward; the plastic "ball on post" brackets
> are mounted to the rack rails, and there are metal brackets that screw into
> the BOP brackets that hold the PCB/lamp assembly.
>
> Hope this is the right assembly for you, if not, or if you have questions,
> let me know and I can try to fill in the holes...

Those pictures are just what we were looking for.  That's pretty close
to what we thought but I wouldn't have guessed that the metal brackets
to the PCB/lamp assembly screwed to the ball-on-post brackets rather
than directly to the rack rails.

Thanks,
Dave

Re: DEC indicator panel mounting details

[jim stephens via cctalk]

On 12/19/2017 2:36 PM, Josh Dersch via cctalk wrote:

On Tue, Dec 19, 2017 at 2:25 PM, Josh Dersch  wrote:


On Tue, Dec 19, 2017 at 2:15 PM, Al Kossow via cctalk <
cctalk@classiccmp.org> wrote:



On 12/19/17 10:49 AM, Noel Chiappa via cctalk wrote:


Could someone who has one please take a look and let us know (or, even

better,

send us photos)?


If someone can't get to mounted ones, I can trundle over to CHM artifact
storage
and look at one of our racks.

I would think LCM should have some readily accessable, though.




I will see if I can grab some pictures this afternoon. We have a few
cabinets that I can take a close look at the innards of.

- Josh




See the pictures at the below link:

https://1drv.ms/f/s!Aqb36sqnCIfMotpQIuc2-tDUva3iBw

It looks to be fairly straightforward; the plastic "ball on post" brackets
are mounted to the rack rails, and there are metal brackets that screw into
the BOP brackets that hold the PCB/lamp assembly.

Hope this is the right assembly for you, if not, or if you have questions,
let me know and I can try to fill in the holes...

- Josh


I am not sure if it is what you need, but Vince S did some 3d print STL 
files for some of the ball mounting gizmos.


http://so-much-stuff.com/pdp8/cad/3d.php

thanks
Jim

Re: DEC indicator panel mounting details

[Josh Dersch via cctalk]

On Tue, Dec 19, 2017 at 2:25 PM, Josh Dersch  wrote:

> On Tue, Dec 19, 2017 at 2:15 PM, Al Kossow via cctalk <
> cctalk@classiccmp.org> wrote:
>
>>
>>
>> On 12/19/17 10:49 AM, Noel Chiappa via cctalk wrote:
>>
>> > Could someone who has one please take a look and let us know (or, even
>> better,
>> > send us photos)?
>>
>>
>> If someone can't get to mounted ones, I can trundle over to CHM artifact
>> storage
>> and look at one of our racks.
>>
>> I would think LCM should have some readily accessable, though.
>>
>>
>>
> I will see if I can grab some pictures this afternoon. We have a few
> cabinets that I can take a close look at the innards of.
>
> - Josh
>
>
>
See the pictures at the below link:

https://1drv.ms/f/s!Aqb36sqnCIfMotpQIuc2-tDUva3iBw

It looks to be fairly straightforward; the plastic "ball on post" brackets
are mounted to the rack rails, and there are metal brackets that screw into
the BOP brackets that hold the PCB/lamp assembly.

Hope this is the right assembly for you, if not, or if you have questions,
let me know and I can try to fill in the holes...

- Josh

Re: DEC indicator panel mounting details

[Josh Dersch via cctalk]

On Tue, Dec 19, 2017 at 2:15 PM, Al Kossow via cctalk  wrote:

>
>
> On 12/19/17 10:49 AM, Noel Chiappa via cctalk wrote:
>
> > Could someone who has one please take a look and let us know (or, even
> better,
> > send us photos)?
>
>
> If someone can't get to mounted ones, I can trundle over to CHM artifact
> storage
> and look at one of our racks.
>
> I would think LCM should have some readily accessable, though.
>
>
>
I will see if I can grab some pictures this afternoon. We have a few
cabinets that I can take a close look at the innards of.

- Josh

Re: DEC indicator panel mounting details

[Al Kossow via cctalk]

On 12/19/17 10:49 AM, Noel Chiappa via cctalk wrote:

> Could someone who has one please take a look and let us know (or, even better,
> send us photos)?


If someone can't get to mounted ones, I can trundle over to CHM artifact storage
and look at one of our racks.

I would think LCM should have some readily accessable, though.

Re: DEC indicator panel mounting details

[Ethan Dicks via cctalk]

On Tue, Dec 19, 2017 at 1:49 PM, Noel Chiappa via cctalk
 wrote:
> So, Dave and I are getting to the point where we're about to start mounting up
> our indicator panels, but we're not sure what some of the mechanical details
> (below) are.
>
> Could someone who has one please take a look and let us know (or, even better,
> send us photos)?

I have one or two of these indicator panels (missing cables, IIRC).

I will dig them out and see what I can get.  Mine arrived already
de-installed, so I have no idea what they looked like on the rack.  I
can at least get details of where the mounting points are.

-ethan

Re: MicroVAX I Diagnostic floppies

[Josh Dersch via cctalk]

Well, that figures.  Found them here, for future reference:

https://www.headcrashers.org/comp/rx50/index.html

- Josh

On Tue, Dec 19, 2017 at 10:50 AM, Josh Dersch  wrote:

> Hi all --
>
> I'm attempting to resurrect a MicroVAX I (because it's there, that's why)
> and the CPU appears to have developed a fault.  Microverify passes at
> powerup, but I can't get VMS to boot (it dies with a SYSBOOT-F-Unexpected
> Machine Check almost immediately).  Also tried Ultrix and it dies shortly
> after enumerating disks.  I know the memory and disk controllers are fine,
> and there's nothing else in the system at the moment, so unless anyone has
> any bright ideas, I think I'm going to need to debug the CPU.
>
> I'm trying to track down the diagnostics for this machine, no luck so
> far.  Anyone have a copy sitting around somewhere?  I believe there were
> two RX50 floppies for this purpose, DEC part numbers BL-T856A-DE and
> BL-T857A-DE.
>
> Thanks as always,
> Josh
>

MicroVAX I Diagnostic floppies

[Josh Dersch via cctalk]

Hi all --

I'm attempting to resurrect a MicroVAX I (because it's there, that's why)
and the CPU appears to have developed a fault.  Microverify passes at
powerup, but I can't get VMS to boot (it dies with a SYSBOOT-F-Unexpected
Machine Check almost immediately).  Also tried Ultrix and it dies shortly
after enumerating disks.  I know the memory and disk controllers are fine,
and there's nothing else in the system at the moment, so unless anyone has
any bright ideas, I think I'm going to need to debug the CPU.

I'm trying to track down the diagnostics for this machine, no luck so far.
Anyone have a copy sitting around somewhere?  I believe there were two RX50
floppies for this purpose, DEC part numbers BL-T856A-DE and BL-T857A-DE.

Thanks as always,
Josh

DEC indicator panel mounting details

[Noel Chiappa via cctalk]

So, Dave and I are getting to the point where we're about to start mounting up
our indicator panels, but we're not sure what some of the mechanical details
(below) are.

Could someone who has one please take a look and let us know (or, even better,
send us photos)?

It appears that the bezel and inlay mount to the rack with the same kind of
'ball on post' (BoP) mounting things used for blank panels.

What we can't quite make out is how the Belenex light shield, and the circuit
board with the bulbs on it, mount to the rack. I suspect it's totally
independent from the mounting of the BoP mounting devices for the bezel/inlay,
but

The one mechanical drawing we have (RF11 engineering drawings, pg. 186) does
have cross-sections, which confirm the board is mounted to the Benelex on
stand-offs, and that the Benelex is somehow thrust up into the bezel, but
exactly how the Benelex is mounted is not clear to me. The mention of a "Mtg
Bkt Benelex" suggests that's mounted to the rack with brackets, but...

Help!? Thanks (hopefully :-)!

   Noel