Re: Raised Floors

[Craig Ruff via cctalk]

I should have been more clear in my last response.  The 2x2 grid of the floor 
tiles does not extend to the floor, but to an intermediate layer with wider 
spacing of the supports at the floor level.

Re: Raised Floors

[Grant Taylor via cctalk]

On 5/23/19 5:25 PM, Craig Ruff via cctech wrote:
I should have been more clear in my last response.  The 2x2 grid of the 
floor tiles does not extend to the floor, but to an intermediate layer 
with wider spacing of the supports at the floor level.


Thank you for the clarification.

I expected something like that might be the case.  But I didn't want to 
assume.




--
Grant. . . .
unix || die

RE: Raised Floors

[Wayne S via cctalk]

Sent from Mail for Windows 10

From: Ethan O'Toole via cctalk
Sent: Thursday, May 23, 2019 12:19 PM
To: Patrick Finnegan; General Discussion: On-Topic and 
Off-Topic Posts
Subject: Re: Raised Floors

> Purdue's insurer REQUIRES fire sprinklers in data centers.  And it's not
> atypical from what I've heard.  They are all dry, pre-action systems, which
> eliminate most of the danger of it accidentally dumping water.  It's
> unlikely that with a dry pipe, pre-action system water will be dumped
> somewhere that a person is standing without warning[0]. These days,
> equipment is easy to replace (compared to classic systems) given a good DR
> plan and a good insurance provider.

Most systems do air first (pre action) while triggering the PDU/UPS
systems to shut off first but some X seconds later water is coming out.
Out of the sprinkler head that was broken, not all heads?

Fire Sprinkler heads have bulbs with a liquid (many kinds based upon what the 
temperature is that they expand) that burst when a specific temp is reached 
thus allowing the water to flow. They operate independently of each other under 
the theory that the one that bursts first is closest to the fire and should  be 
allowed to have the maximum pressure and water flow.

> The NEC also requires[1] an EPO system to shut off all power sources
> (including any UPS).  I'm pretty sure that any fire that required a hose to
> be pulled off of a truck would first result in the power being shut off.

I'm sitting in a fairly large multi-tenant datacenter right now and there
are no EPO buttons. There might be somewhere on a UPS or PDU somewhere,
but nothing I could hit. The amount of damage from doing so would be
horrendus. The employees of the facility might have access to something,
but I would hope it's zoned out.
Some systems have the EPO outside the room in a fairly secure location (IE. 
locked room) to prevent someone accidentally or maliciously setting it off and 
causing damage. Sounds wrong, but the idea is that if there is a fire the 
sensors in the room will activate the EPO.  So no one should be manually 
turning power off unless they are properly authorized,  as shutting it off will 
cause false positives in other areas, like activating the fire alarm system and 
autodialing the fire department and possibly the police too.
That said, I have seen a “Delay” button, which, when pressed, would delay  
system activation until a few seconds after  it was released.  This was in a 
really large datacenter where an alarm would sound when activation was imminent 
and the system would activate 20 seconds later. Someone working on equipment 
might not have time to get out of the room before activation. The room was 
large enough and had a smaller  “forms” room and a IBM tech room with separate 
doors so people could be in those rooms and not react fast enough to get out in 
time. The delay was so that someone could give everyone enough time to get out 
of the room before the system activated. Yes, there was a phone next to the 
button so that maintenance could be called to reset everything if it was a 
false alarm.

> HPE server in the datacenter released its magic smoke.  Standard sprinklers
> only affect the area where the fire set them off, and don't have to douse
> your whole multi-1000 sq ft data center.

Right, and smoke sets off the smoke alarm. It takes actual heat to burst
the liquid thing that pops and lets the sprinkler head open. It's not
electronically controlled I would think? Not like the movie "hackers"
would portray?

> 2. In our experience, HPE servers tend to (internally) catch fire and
> release smoke at a rate of around 10-to-1 vs the Dell servers we've had.

Dell BIOS/Lifecycle crud is so slow and horrible :-( . Huge turd. Haven't
seen any HP boxes go up. Had thousands of Supermicro boxes at prior gig
and while the power supplies had engineering flaws never really saw one
put out smoke (sample size possibly 5 digit # of servers.)


--
: Ethan O'Toole

Re: TU58FS

[Rod Smallwood via cctalk]

Hi

    It does not have to be done using TU58.

If you would be so kind as to explain the bit about SIMH and dd.

What to do is good.. How even better.

If I can get  a bootable OS image onto the SCSI drive with what I have 
available then that's all I  need.


Rod Smallwood


On 24/05/2019 00:56, Glen Slick via cctalk wrote:

On Thu, May 23, 2019 at 1:36 PM Rod Smallwood via cctalk
 wrote:

Hi

  I am working on getting my KDJ11-E based system up.

I have a CQD220A and a SCSI hard drive installed and formatted.

A serial connection to a Raspberry Pi soon brought up the console on the
PDP-11 using TU58FS.

Next will be a second serial line to allow TU58 emulation. SFSG

What is not clear is if I can get a bootable OS (RT, RSX or whatever)
image onto the Hard Drive using TU58FS.

Is getting set up to use TU58 emulation and then using that as a
software installation source one of the goals on its own, or is that
just one of the solutions you are considering in the larger goal of
getting software up and running on your 11/93?

If you are open to other software installation options, it should be a
lot quicker and easier to install software to a disk image using SIMH,
and then "dd" that image to a SCSI disk that the CQD220A is configured
to use. I have gone that route a few times to get 2.11BSD and RSTS/E
10.1 running on real PDP-11 hardware with CQD-220 controllers.


--

Re: TU58FS

[Glen Slick via cctalk]

On Thu, May 23, 2019 at 1:36 PM Rod Smallwood via cctalk
 wrote:
>
> Hi
>
>  I am working on getting my KDJ11-E based system up.
>
> I have a CQD220A and a SCSI hard drive installed and formatted.
>
> A serial connection to a Raspberry Pi soon brought up the console on the
> PDP-11 using TU58FS.
>
> Next will be a second serial line to allow TU58 emulation. SFSG
>
> What is not clear is if I can get a bootable OS (RT, RSX or whatever)
> image onto the Hard Drive using TU58FS.

Is getting set up to use TU58 emulation and then using that as a
software installation source one of the goals on its own, or is that
just one of the solutions you are considering in the larger goal of
getting software up and running on your 11/93?

If you are open to other software installation options, it should be a
lot quicker and easier to install software to a disk image using SIMH,
and then "dd" that image to a SCSI disk that the CQD220A is configured
to use. I have gone that route a few times to get 2.11BSD and RSTS/E
10.1 running on real PDP-11 hardware with CQD-220 controllers.

Re: TU58FS

[Richard Cini via cctalk]

  
  
  

Yes you can. Basically you can boot an image and then prepare the 
volume on the hard drive and copy it over. I have a PDP11 page on my Classiccmp 
site that walks through it. There’s also a long thread on the VCFE forums about 
it. 
classiccmp.org/cini/pdp11.htm




Get Outlook for iOS

  




On Thu, May 23, 2019 at 4:36 PM -0400, "Rod Smallwood via cctalk" 
 wrote:










Hi

     I am working on getting my KDJ11-E based system up.

I have a CQD220A and a SCSI hard drive installed and formatted.

A serial connection to a Raspberry Pi soon brought up the console on the 
PDP-11 using TU58FS.

Next will be a second serial line to allow TU58 emulation. SFSG

What is not clear is if I can get a bootable OS (RT, RSX or whatever)  
image onto the Hard Drive using TU58FS.

Any advice as to if and how this could be done would be greatly 
appreciated .

Rod Smallwood



-- 

TU58FS

[Rod Smallwood via cctalk]

Hi

    I am working on getting my KDJ11-E based system up.

I have a CQD220A and a SCSI hard drive installed and formatted.

A serial connection to a Raspberry Pi soon brought up the console on the 
PDP-11 using TU58FS.


Next will be a second serial line to allow TU58 emulation. SFSG

What is not clear is if I can get a bootable OS (RT, RSX or whatever)  
image onto the Hard Drive using TU58FS.


Any advice as to if and how this could be done would be greatly 
appreciated .


Rod Smallwood



--

Re: Raised Floors

[Ethan O'Toole via cctalk]

Purdue's insurer REQUIRES fire sprinklers in data centers.  And it's not
atypical from what I've heard.  They are all dry, pre-action systems, which
eliminate most of the danger of it accidentally dumping water.  It's
unlikely that with a dry pipe, pre-action system water will be dumped
somewhere that a person is standing without warning[0]. These days,
equipment is easy to replace (compared to classic systems) given a good DR
plan and a good insurance provider.


Most systems do air first (pre action) while triggering the PDU/UPS 
systems to shut off first but some X seconds later water is coming out. 
Out of the sprinkler head that was broken, not all heads?



The NEC also requires[1] an EPO system to shut off all power sources
(including any UPS).  I'm pretty sure that any fire that required a hose to
be pulled off of a truck would first result in the power being shut off.


I'm sitting in a fairly large multi-tenant datacenter right now and there 
are no EPO buttons. There might be somewhere on a UPS or PDU somewhere, 
but nothing I could hit. The amount of damage from doing so would be 
horrendus. The employees of the facility might have access to something, 
but I would hope it's zoned out.



HPE server in the datacenter released its magic smoke.  Standard sprinklers
only affect the area where the fire set them off, and don't have to douse
your whole multi-1000 sq ft data center.


Right, and smoke sets off the smoke alarm. It takes actual heat to burst 
the liquid thing that pops and lets the sprinkler head open. It's not 
electronically controlled I would think? Not like the movie "hackers" 
would portray?



2. In our experience, HPE servers tend to (internally) catch fire and
release smoke at a rate of around 10-to-1 vs the Dell servers we've had.


Dell BIOS/Lifecycle crud is so slow and horrible :-( . Huge turd. Haven't 
seen any HP boxes go up. Had thousands of Supermicro boxes at prior gig 
and while the power supplies had engineering flaws never really saw one 
put out smoke (sample size possibly 5 digit # of servers.)



--
: Ethan O'Toole

Re: Raised Floors

[Grant Taylor via cctalk]

On 5/22/19 9:41 AM, Grant Taylor via cctalk wrote:
Both of the data centers / raised floors in my office have fire 
sprinklers.  I don't know if they lines are charged or dry.  (I'll 
inquire.)


I received an answer this morning stating that the fire sprinklers in 
the DC are "charged with air and if a sprinkler head goes off the air 
pressure releases but it will not flow water unless one other fire 
system device (smoke head pull station etc..) is activated."


So there is the possibility ~> likelihood that water will be pumped into 
the DC if a sprinkler head opens and another Indicator of Fire ;-) 
activates.




--
Grant. . . .
unix || die

Re: Apple ][+ Keyboard

[Pete Rittwage via cctalk]

On 2019-05-22 11:56, John Many Jars via cctech wrote:
I feel like I'm falling down a rabbit hole with this old ][ europlus 
I've

had for years.

The smoke came out of the power supply, so I replaced it with one from
ReactiveMicro.  Now it boots, and was working okay, until this morning.
Now, no keyboard  if you hit ctrl-reset.  All other keys are
ignored.

Anyone have any ideas? (:

Thanks,

John (aka Mark)


I've had that issue. If you or someone over the years accidentally 
plugged in the keyboard cable wrong, it blows one or both of the 7400's 
and if you are unlucky, the unobtainable keyboard encoder. They could of 
course also break from a PSU surge or static.


--
-Pete Rittwage

Re: Apple ][+ Keyboard

[John Many Jars via cctalk]

Weird... now I've pulled it apart (taken the case off and pulled out the
keyboard... and I get many wrong characters instead of no characters...

Hmmm.  I wonder what happens if you take all the screws out of this thing?
I hope it's not like an IBM AT keyboard and 83 tiny springs fly out...

On Thu, 23 May 2019 at 15:01, John Many Jars 
wrote:

> That would be great.  I'd really appreciate it.
>
> On Thu, 23 May 2019 at 14:08, Adrian Graham via cctalk <
> cctalk@classiccmp.org> wrote:
>
>> Hi Mark,
>>
>> I have a contact in Belgium who has made some PS2 adapter PCBs if you'd
>> like me to put you in contact, he was advertising them on Facebook a week
>> or so ago.
>>
>> --
>> adrian/witchy
>> Owner of Binary Dinosaurs, the UK's biggest private home computer
>> collection?
>> t: @binarydinosaursf: facebook.com/binarydinosaurs
>> w: www.binarydinosaurs.co.uk
>>
>>
>> On Thu, 23 May 2019 at 13:22, John Many Jars via cctalk <
>> cctalk@classiccmp.org> wrote:
>>
>> > Hi Brian,
>> >
>> > That's an interesting thread.  It probably is the encoder chip as
>> hitting
>> > Ctrl-Reset works.  Unfortunately Briel Computers doesn't seem to exist
>> > anymore. ):
>> >
>> > This seems like a temporary solution.  I need to collect the stuff to
>> build
>> > one:
>> >
>> > https://knzl.at/ps2-keyboard-for-apple-ii/
>> >
>> > Thanks!
>> >
>> > Mark
>> >
>> > On Wed, 22 May 2019 at 17:00, Brian Marstella 
>> wrote:
>> >
>> > > Just ran across this a few days ago on different search...
>> > >
>> > > https://groups.google.com/forum/#!topic/comp.sys.apple2/kJ4SosdZTb4
>> > >
>> > > May have some helpful info.
>> > >
>> > > On Wed, May 22, 2019 at 11:56 AM John Many Jars via cctalk <
>> > > cctalk@classiccmp.org> wrote:
>> > >
>> > >> I feel like I'm falling down a rabbit hole with this old ][ europlus
>> > I've
>> > >> had for years.
>> > >>
>> > >> The smoke came out of the power supply, so I replaced it with one
>> from
>> > >> ReactiveMicro.  Now it boots, and was working okay, until this
>> morning.
>> > >> Now, no keyboard  if you hit ctrl-reset.  All other keys are
>> > >> ignored.
>> > >>
>> > >> Anyone have any ideas? (:
>> > >>
>> > >> Thanks,
>> > >>
>> > >> John (aka Mark)
>> > >>
>> > >
>> >
>> > --
>> > Yoyodyne Propulsion Systems:  "The Future Begins Tomorrow"
>> > Visit us at: http://www.yoyodyne-propulsion.net
>> >
>> > 
>> > "When a true genius appears in the world, you may know him by this sign,
>> > that the dunces are all in confederacy against him." -- Jonathan Swift
>> >
>>
>
>
> --
> Yoyodyne Propulsion Systems:  "The Future Begins Tomorrow"
> Visit us at: http://www.yoyodyne-propulsion.net
>
> 
> "When a true genius appears in the world, you may know him by this sign,
> that the dunces are all in confederacy against him." -- Jonathan Swift
>
>

-- 
Yoyodyne Propulsion Systems:  "The Future Begins Tomorrow"
Visit us at: http://www.yoyodyne-propulsion.net


"When a true genius appears in the world, you may know him by this sign,
that the dunces are all in confederacy against him." -- Jonathan Swift

Re: Apple ][+ Keyboard

[John Many Jars via cctalk]

That would be great.  I'd really appreciate it.

On Thu, 23 May 2019 at 14:08, Adrian Graham via cctalk <
cctalk@classiccmp.org> wrote:

> Hi Mark,
>
> I have a contact in Belgium who has made some PS2 adapter PCBs if you'd
> like me to put you in contact, he was advertising them on Facebook a week
> or so ago.
>
> --
> adrian/witchy
> Owner of Binary Dinosaurs, the UK's biggest private home computer
> collection?
> t: @binarydinosaursf: facebook.com/binarydinosaurs
> w: www.binarydinosaurs.co.uk
>
>
> On Thu, 23 May 2019 at 13:22, John Many Jars via cctalk <
> cctalk@classiccmp.org> wrote:
>
> > Hi Brian,
> >
> > That's an interesting thread.  It probably is the encoder chip as hitting
> > Ctrl-Reset works.  Unfortunately Briel Computers doesn't seem to exist
> > anymore. ):
> >
> > This seems like a temporary solution.  I need to collect the stuff to
> build
> > one:
> >
> > https://knzl.at/ps2-keyboard-for-apple-ii/
> >
> > Thanks!
> >
> > Mark
> >
> > On Wed, 22 May 2019 at 17:00, Brian Marstella 
> wrote:
> >
> > > Just ran across this a few days ago on different search...
> > >
> > > https://groups.google.com/forum/#!topic/comp.sys.apple2/kJ4SosdZTb4
> > >
> > > May have some helpful info.
> > >
> > > On Wed, May 22, 2019 at 11:56 AM John Many Jars via cctalk <
> > > cctalk@classiccmp.org> wrote:
> > >
> > >> I feel like I'm falling down a rabbit hole with this old ][ europlus
> > I've
> > >> had for years.
> > >>
> > >> The smoke came out of the power supply, so I replaced it with one from
> > >> ReactiveMicro.  Now it boots, and was working okay, until this
> morning.
> > >> Now, no keyboard  if you hit ctrl-reset.  All other keys are
> > >> ignored.
> > >>
> > >> Anyone have any ideas? (:
> > >>
> > >> Thanks,
> > >>
> > >> John (aka Mark)
> > >>
> > >
> >
> > --
> > Yoyodyne Propulsion Systems:  "The Future Begins Tomorrow"
> > Visit us at: http://www.yoyodyne-propulsion.net
> >
> > 
> > "When a true genius appears in the world, you may know him by this sign,
> > that the dunces are all in confederacy against him." -- Jonathan Swift
> >
>


-- 
Yoyodyne Propulsion Systems:  "The Future Begins Tomorrow"
Visit us at: http://www.yoyodyne-propulsion.net


"When a true genius appears in the world, you may know him by this sign,
that the dunces are all in confederacy against him." -- Jonathan Swift

Re: Apple ][+ Keyboard

[Adrian Graham via cctalk]

Hi Mark,

I have a contact in Belgium who has made some PS2 adapter PCBs if you'd
like me to put you in contact, he was advertising them on Facebook a week
or so ago.

-- 
adrian/witchy
Owner of Binary Dinosaurs, the UK's biggest private home computer
collection?
t: @binarydinosaursf: facebook.com/binarydinosaurs
w: www.binarydinosaurs.co.uk


On Thu, 23 May 2019 at 13:22, John Many Jars via cctalk <
cctalk@classiccmp.org> wrote:

> Hi Brian,
>
> That's an interesting thread.  It probably is the encoder chip as hitting
> Ctrl-Reset works.  Unfortunately Briel Computers doesn't seem to exist
> anymore. ):
>
> This seems like a temporary solution.  I need to collect the stuff to build
> one:
>
> https://knzl.at/ps2-keyboard-for-apple-ii/
>
> Thanks!
>
> Mark
>
> On Wed, 22 May 2019 at 17:00, Brian Marstella  wrote:
>
> > Just ran across this a few days ago on different search...
> >
> > https://groups.google.com/forum/#!topic/comp.sys.apple2/kJ4SosdZTb4
> >
> > May have some helpful info.
> >
> > On Wed, May 22, 2019 at 11:56 AM John Many Jars via cctalk <
> > cctalk@classiccmp.org> wrote:
> >
> >> I feel like I'm falling down a rabbit hole with this old ][ europlus
> I've
> >> had for years.
> >>
> >> The smoke came out of the power supply, so I replaced it with one from
> >> ReactiveMicro.  Now it boots, and was working okay, until this morning.
> >> Now, no keyboard  if you hit ctrl-reset.  All other keys are
> >> ignored.
> >>
> >> Anyone have any ideas? (:
> >>
> >> Thanks,
> >>
> >> John (aka Mark)
> >>
> >
>
> --
> Yoyodyne Propulsion Systems:  "The Future Begins Tomorrow"
> Visit us at: http://www.yoyodyne-propulsion.net
>
> 
> "When a true genius appears in the world, you may know him by this sign,
> that the dunces are all in confederacy against him." -- Jonathan Swift
>

Re: M7264 Troubleshooting

[Mattis Lind via cctalk]

Den tors 23 maj 2019 kl 14:14 skrev Noel Chiappa via cctalk <
cctalk@classiccmp.org>:

> > From: Jon Elson
>
> > Yes, this is most likely a bus timeout
>
> The good news is that it looks like his CPU is 'mostly' working; and if
> the NXM is due to a fault on the CPU (e.g. bad bus transceiver sending
> the wrong address), that would be fixable (it uses 8641's).
>
> If the fault is in the DLV11-E (and not just misconfiguration), depending
> on
> where the fault is, he might be out of luck with that card; it uses DC005's
> for transceivers, which of course are unobtainium now.


Not really unobtainium: https://www.ebay.com/itm/281679682476 and
https://www.ebay.com/itm/253305313497

These DC0xx chips can sometimes be found on Ebay under their Signetics name.

DC003 C2293N
DC004 C2301N
DC005 C2324N
DC006 C2345N
DC010 C2344N




> Still, QBUS serial
> interfaces are not rare.
>
> And overall, progress is being made! :-)
>
> Noel
>

/Mattis

Re: Apple ][+ Keyboard

[Alexandre Souza via cctalk]

- There are lots of PS2 adapters on the market, I made one myself
- There are lots of PS2 to apple II schematics avaiable. One of them uses
just ONE PIC µC
- The keyboard encoder was reverse-engineered by Victor Trucco, and I
believe I've seen others around

Lots of options :)

---8<---Corte aqui---8<---
http://www.tabajara-labs.blogspot.com
http://www.tabalabs.com.br
---8<---Corte aqui---8<---


Em qui, 23 de mai de 2019 às 09:22, John Many Jars via cctalk <
cctalk@classiccmp.org> escreveu:

> Hi Brian,
>
> That's an interesting thread.  It probably is the encoder chip as hitting
> Ctrl-Reset works.  Unfortunately Briel Computers doesn't seem to exist
> anymore. ):
>
> This seems like a temporary solution.  I need to collect the stuff to build
> one:
>
> https://knzl.at/ps2-keyboard-for-apple-ii/
>
> Thanks!
>
> Mark
>
> On Wed, 22 May 2019 at 17:00, Brian Marstella  wrote:
>
> > Just ran across this a few days ago on different search...
> >
> > https://groups.google.com/forum/#!topic/comp.sys.apple2/kJ4SosdZTb4
> >
> > May have some helpful info.
> >
> > On Wed, May 22, 2019 at 11:56 AM John Many Jars via cctalk <
> > cctalk@classiccmp.org> wrote:
> >
> >> I feel like I'm falling down a rabbit hole with this old ][ europlus
> I've
> >> had for years.
> >>
> >> The smoke came out of the power supply, so I replaced it with one from
> >> ReactiveMicro.  Now it boots, and was working okay, until this morning.
> >> Now, no keyboard  if you hit ctrl-reset.  All other keys are
> >> ignored.
> >>
> >> Anyone have any ideas? (:
> >>
> >> Thanks,
> >>
> >> John (aka Mark)
> >>
> >
>
> --
> Yoyodyne Propulsion Systems:  "The Future Begins Tomorrow"
> Visit us at: http://www.yoyodyne-propulsion.net
>
> 
> "When a true genius appears in the world, you may know him by this sign,
> that the dunces are all in confederacy against him." -- Jonathan Swift
>

Re: Apple ][+ Keyboard

[John Many Jars via cctalk]

Hi Brian,

That's an interesting thread.  It probably is the encoder chip as hitting
Ctrl-Reset works.  Unfortunately Briel Computers doesn't seem to exist
anymore. ):

This seems like a temporary solution.  I need to collect the stuff to build
one:

https://knzl.at/ps2-keyboard-for-apple-ii/

Thanks!

Mark

On Wed, 22 May 2019 at 17:00, Brian Marstella  wrote:

> Just ran across this a few days ago on different search...
>
> https://groups.google.com/forum/#!topic/comp.sys.apple2/kJ4SosdZTb4
>
> May have some helpful info.
>
> On Wed, May 22, 2019 at 11:56 AM John Many Jars via cctalk <
> cctalk@classiccmp.org> wrote:
>
>> I feel like I'm falling down a rabbit hole with this old ][ europlus I've
>> had for years.
>>
>> The smoke came out of the power supply, so I replaced it with one from
>> ReactiveMicro.  Now it boots, and was working okay, until this morning.
>> Now, no keyboard  if you hit ctrl-reset.  All other keys are
>> ignored.
>>
>> Anyone have any ideas? (:
>>
>> Thanks,
>>
>> John (aka Mark)
>>
>

-- 
Yoyodyne Propulsion Systems:  "The Future Begins Tomorrow"
Visit us at: http://www.yoyodyne-propulsion.net


"When a true genius appears in the world, you may know him by this sign,
that the dunces are all in confederacy against him." -- Jonathan Swift

Re: M7264 Troubleshooting

[Noel Chiappa via cctalk]

> From: Jon Elson

> Yes, this is most likely a bus timeout

The good news is that it looks like his CPU is 'mostly' working; and if
the NXM is due to a fault on the CPU (e.g. bad bus transceiver sending
the wrong address), that would be fixable (it uses 8641's).

If the fault is in the DLV11-E (and not just misconfiguration), depending on
where the fault is, he might be out of luck with that card; it uses DC005's
for transceivers, which of course are unobtainium now. Still, QBUS serial
interfaces are not rare.

And overall, progress is being made! :-)

Noel