I don't get replies from here yet, so I have seen no replies to my posts,
nor the posts themselves.
There is a shop that has been in biz for over 25 years that is closing in
California.
I asked for anything old Apple, Sun, HP, IBM, and any old keyboards.
She will call me back tomorrow. She
On 2/5/19 12:19 PM, Jack Harper via cctalk wrote:
>
>
> Greetings to the List -
>
> My very sincere THANKS for the enlightening responses from Chuck Guzis,
> Brent Hilpert and Jay West on mounting the HP 7970 tape drive Beasts.
>
> I am out of town on business for a couple days and will
> I don't get replies from here yet, so I have seen no replies to my
> posts,
> nor the posts themselves.
>
> There is a shop that has been in biz for over 25 years that is closing
> in
> California.
>
Cindy,
Where in CA? It's a big state :)
-Ali
Daniel Fecteau
6025 Arthur sauvé
Mirabel, Quebec
J7N 2W4
TEL: 450-969-1616 ext 101
Mail: s...@savesysteme.com
He has a variety of Model M 122 key keyboards. Contact him if you are
interested.
Not affiliated with seller, etc.
Cindy Croxton
Electronics Plus
1613 Water Street
If anyone out there needs an EIA distribution panel to go with their
DZ11, here:
https://www.ebay.com/itm/321225351590
are some of the 8-line ones (as used in the later modular back panel
system). The seller (Efi) is good people.
Noel
Greetings to the List -
My very sincere THANKS for the enlightening responses from Chuck
Guzis, Brent Hilpert and Jay West on mounting the HP 7970 tape drive Beasts.
I am out of town on business for a couple days and will inspect
things when I return.
Chuck is, of course, 100% correct
Unfortunately, they have already scrapped everything! They were distributors
of old HP and IBM hardware.
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sa...@elecplus.com
---
This email has been checked for viruses by Avast antivirus software.
On Tue, Feb 5, 2019 at 10:03 AM Fritz Mueller via cctalk <
cctalk@classiccmp.org> wrote:
>
>
> FWIW, I maintain a Windows VM (on a MacOS X host) for the sole purpose of
> running PDP11GUI, and I use an USA19H USB serial dongle connected through
> to the VM as a serial interface. I don't know if
On the logic analyzer suggestion: I remember seeing a logic analyzer hooked to
a PDP-11 at DEC, for software debugging. As I recall, it was connected at the
console front panel, which seems reasonable since several key CPU data paths
are exposed there.
paul
On 2/5/2019 12:03 PM, Fritz Mueller via cctalk wrote:
>> Perhaps compile [test programs] under SimH and do a block-level diff of the
>> image with what is currently in use, and transfer just those blocks?
>
> I did experiment with this a little way back. I wrote a small standalone
> code that
On 05/02/2019 20:59, Chuck Guzis via cctalk wrote:
On 2/5/19 12:19 PM, Jack Harper via cctalk wrote:
I learned that very quickly - If you open the front of the Drive and
swing out the door with the electronics, drive motors etc, it is
definitely heavy enough to tip a rack.
I bolted the
Hi Pontus,
I looked at my limited function front panels, and they were 54-11507s. I
have not looked at any prints. Where did you find the 54-11165 number?
Could it be for a Q-bus system?
The 50-X is the etched PCB. DEC usually added a 1 to that number to
make it complete board.
Thanks, Paul
>> Would it be any difference if you run the machine at full speed or lower
>> speed...
>
> Ah, yes -- this I haven't tried yet! I have a KM11 replica, so this is easy
> enough to do; I'll give that a go when I next get back to the machine
> (possibly this evening).
Ran the machine on the
> On the logic analyzer suggestion: I remember seeing a logic analyzer hooked
> to a PDP-11 at DEC, for software debugging. As I recall, it was connected at
> the console front panel, which seems reasonable since several key CPU data
> paths are exposed there.
Ooh, I like that suggestion! It
> From: Paul Koning
> Another possibility occurs to me: bad bits in the MMU (UISAR0 register
> ... if UISAR0 has a stuck bit so the "plain" case maps incorrectly
> you'd expect to come up with execution that looks nothing at all like
> what was intended.
One would hope that
Brent wrote...
---
The right side of the drive (should) have little pieces of 1/8" thick
aluminum glued at the back of the rack-mount holes to match the thickness of
the left-side bracket, to make the drive seat parallel to the face of the
rack.
In my (limited) experience
I'm sure there is a post in the archives about this...
There is a special custom HP bracket on the left. It is a heavy piece of
steel - and it MUST be, due to the weight and movement (swing out) of the
unit. I'm used to finding ways for one person to do a two man job when
mounting things in
>
> Yeah, it may come to that. One issue we've been having is doing specialized
> test programmes; trying to run the C compiler fails. I don't know about the
> assembler, though. And as Fritz mentioned, it takes hours to load a new disk
> image. I think we've come up with a way around that,
Den tis 5 feb. 2019 kl 00:23 skrev Fritz Mueller via cctalk <
cctalk@classiccmp.org>:
>
> > On Feb 4, 2019, at 2:28 AM, Noel Chiappa via cctalk <
> cctalk@classiccmp.org> wrote:
> >
> > I'm pretty sure the command only gets a few instructions in before it
> blows
> > up. Here are the process'
Hello all,
I have built an emulator that uses an Arduino and SD card to provide four
"floppy drives" for an Epson PX8. It may also be usable with a PX4, but I have
no way of trying it.
If you would like to build one yourself, or just read about it, the details are
here:
I'm curious as to what the 9956 is for? One might be able to hack something
together with a NPN transistor and a TTL and gate.
This looks to be one of the oddball chips that Fairchild made in the early
days, before most settled down to TTL being the more common.
Dwight
> On Feb 5, 2019, at 8:45 AM, Jon Elson via cctalk
> wrote:
>
> I'd guess the diagnostic tries a few patterns to test for gross failure of
> this circuitry, but since it involves memory on a system running a program,
> it may not be able to exhaustively test these adders and comparators.
I changed email providers, and received no emails for a week. If you tried
to contact me, please ask again!
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sa...@elecplus.com
---
This email has been checked for viruses by Avast antivirus
Hi Al.
$ 60, plus shipping ?
I live close to Paris, France. Zip Code : 77310
( Payment through Paypal seems the only way ?? )
On an other subject, did you see my previous cctalk post on imaging HP 1000 L
series Eprom ? Any interest ?
Best regards
Gerard
> From: Cindy Croxton
> I changed email providers, and received no emails for a week. If you
> tried to contact me, please ask again!
Perhaps 'test' was not an optimal Subject: line - a lot of people think that
flags a message they can ignore, and not even look at - which was not
> Would it be any difference if you run the machine at full speed or lower
> speed...
Ah, yes -- this I haven't tried yet! I have a KM11 replica, so this is easy
enough to do; I'll give that a go when I next get back to the machine (possibly
this evening).
> ...or even single step past
> On Feb 5, 2019, at 10:03 AM, Fritz Mueller wrote:
>
> Unfortunately, when I tried to apply this, it seemed that SIMH's write single
> sector wasn't working correctly for me...
Correction to above: "PDP11GUI's write single sector". Apologies!
--FritzM.
On 02/05/2019 07:36 AM, Noel Chiappa via cctalk wrote:
One would hope that the DEC KT11 diagnostic would check for this... but just
to be thorough, we have in fact written a short diagnostic which stores every
possible value in each UISA register and checks that it's correct. So unless
there is
On Mon, Feb 4, 2019 at 10:46 PM GerardCJAT via cctalk
wrote:
>
> I own a HP 1000 L series 200
> Cards are badly corroded at connectors level BUT some other parts are in
> very good shape.
>
> I can offer,
>
> HP "special SoS" processors: 1AA6-60004, 1AC5, 1AB5, 1AF5 ( - 60001 )
>
> The
On 2/5/19 7:41 AM, dwight via cctalk wrote:
> I'm curious as to what the 9956 is for?
HP used uCTL as the bus interface in the 21xx
>>> I keep wondering about the psu.
>>
>> Good theory.
>
> I'll give these a double-check...
I did give these a look yesterday. Indeed, the +5 regulator in position "C"
(which includes supply to the KT11) was running a little low (4.9 and change).
I trimmed it up, and checked the rest of
I have several. Make a serious offer.
On 2/4/19 11:09 PM, GerardCJAT via cctalk wrote:
> All is in the title.
> An other very long shoot, isn't it ? ;-)
>
> Perhaps compile [test programs] under SimH and do a block-level diff of the
> image with what is currently in use, and transfer just those blocks?
I did experiment with this a little way back. I wrote a small standalone code
that dumps a CRC of every sector over the console; I can run this
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