As Paul said. ALDs are schematics down to the gate level basically. Necessary
to make a gate exact emulation, or debug and maintain a real machine. Used to
be sent with each and every machine, but sadly not often preserved apparently.
Fortunately our IBM 1401’s came with their ALDs. We refer to
Yesterday a visitor in our museum told me, that they used a PL/M
compiler on their Wang 600 at the highschool in the mid-70ies.
First I couldn't believe this, but he had some handwritten
(typwriter) documention about this system.
I scanned the papers and put them on our ftp-server:
ftp.informati
On 4/1/19 7:45 PM, Bill Degnan via cctalk wrote:
> can you show me an example? Long shot but I can at least check to see if I
> have any in my 360 docs. I have mostly programming manuals and general
> hardware docs but a stray ALD may be present.
ALDs are 11x17, and are marked with the produc
On 04/01/2019 09:45 PM, Bill Degnan via cctalk wrote:
can you show me an example?
I think this may actually be a section of the "ALD"s for a
model /50:
http://www.bitsavers.org/pdf/ibm/360/fe/2050/2050_Vol18_Sep72.pdf
And, this one has pretty detailed info on the microcode
flow, listing of
On 04/02/2019 09:49 AM, Al Kossow via cctalk wrote:
On 4/1/19 7:45 PM, Bill Degnan via cctalk wrote:
can you show me an example? Long shot but I can at least check to see if I
have any in my 360 docs. I have mostly programming manuals and general
hardware docs but a stray ALD may be present.
can anyone help this guy out?
From: Benjamin Carlson
Sent: Tuesday, April 02, 2019 9:12 AM
Subject: Fwd: Re: MicroVAX
Greta, my name is Ben Carlson and I am attempting to restore an old DEC
MicroVAX II for the University of Oklahoma's
collections department (see email below, Kerry is their c
On 4/1/19 9:56 PM, Josh Dersch wrote:
>
>
>
> Based on:
> "/netnix bad magic 407
> netinit failed"
>
> it looks like the networking portion of the kernel (built into /netnix)
> was either not built correctly, or not installed properly. Any errors
> when building netnix? Do you have a netnix
On 4/1/19 10:47 PM, Glen Slick via cctalk wrote:
> On Mon, Apr 1, 2019 at 5:55 PM Bill Gunshannon via cctalk
> wrote:
>>
>> OK, here we go with exactly what I get with the new kernel with
>> NKL = 8 and entries in /etc/dtab for 7 serial lines.
>>
>>
>> January 4 08:48:26 init: configure system
>
I will reply to email.
On Tue, Apr 2, 2019 at 5:21 PM +0100, "Al Kossow via cctalk"
wrote:
can anyone help this guy out?
From: Benjamin Carlson
Sent: Tuesday, April 02, 2019 9:12 AM
Subject: Fwd: Re: MicroVAX
Greta, my name is Ben Carlson and I am attempting to restore an old
On 4/2/19 12:20 PM, Al Kossow via cctalk wrote:
> can anyone help this guy out?
>
> From: Benjamin Carlson
> Sent: Tuesday, April 02, 2019 9:12 AM
>
> Subject: Fwd: Re: MicroVAX
>
>Greta, my name is Ben Carlson and I am attempting to restore an old DEC
> MicroVAX II for the University of O
On 04/01/2019 08:34 PM, Paul Koning via cctalk wrote:
> Nice. The bit about the PDP-1 at the skydiving world championship (in
> Orange, MA) is still a well known item in the history of skydiving.
>
> paul
Orange MA airport is still an active skydiving site.
I used to fly there regularly fo
It depends on which OS he actually wants to run. Some one recently posted
info on old versions of VMS on the VMS Usenet Newsgroup which might be
appropriate.
Otherwise, as I am sure Rob knows there is a lot of stuff on Vaxhaven
Dave.
> -Original Message-
> From: cctalk On Behalf Of Rob J
On 4/2/19 9:44 AM, Bill Gunshannon via cctalk wrote:
> A number of choices for OS. OpenBSD or NetBSD should still work
> depending on the actual configuration of the system and VMS still
> has a hobbyist license.
PDP11s were used in various places around the USAF. I duplicated a
bunch of RX50 f
On Tue, Apr 2, 2019 at 9:39 AM Bill Gunshannon via cctalk
wrote:
>
> OK. I put them back to cn (I thought cn stood for console and the ttys
> would be different, but fixed now). Sadly, I still get the "more than
> three handlers" message and attempts to run getty go nuts. :-)
What exactly do y
On 4/2/19 1:27 PM, Chuck Guzis via cctalk wrote:
> On 4/2/19 9:44 AM, Bill Gunshannon via cctalk wrote:
>
>> A number of choices for OS. OpenBSD or NetBSD should still work
>> depending on the actual configuration of the system and VMS still
>> has a hobbyist license.
>
> PDP11s were used in var
I rescued a LaserJet 4+ printer that I have been trying to restore.
Initially everything seemed ok and it seemed as if there may be just a bit
of an issue with paper pickup which I attributed to old paper in the tray.
However, soon I started getting the accordion paper jam which led me to
replaci
If I'm not mistaken, high voltage capacitors on power supply. The corona
wire isn't charging the paper, so the image doesn't get transfered from the
cylinder to the paper to be pressed/fused in the fusor.
---8<---Corte aqui---8<---
http://www.tabajara-labs.blogspot.com
http://www.tabalabs.com.br
-
On 4/2/19 12:44 PM, Bill Gunshannon via cctalk wrote:
> Ummm... That's MV II or MicroVAX-II, not PDP-11.
>
> Of course, I do have PDP-11's running here but no C-130's parked
> around the place. Was impressed with the improvements in the J
> model in 2009, however. :-)
Could be--I generally do
On 4/2/19 1:56 PM, Ali via cctalk wrote:
I rescued a LaserJet 4+ printer that I have been trying to restore.
I miss my 4M+ with duplexer and extra paper tray. :-(
Initially everything seemed ok and it seemed as if there may be just a bit
of an issue with paper pickup which I attributed to ol
On 4/2/19 2:09 PM, Grant Taylor via cctalk wrote:
I'll share your email with a friend who was a certified HP LaserJet
repairman. (I just pretended to be one a couple of jobs ago).
My friend replied with the following:
"""
- Bad / dirty contacts to the hi voltage
- Bad high voltage
- Bad DC
Grant,
> I miss my 4M+ with duplexer and extra paper tray. :-(
Yes, these guys were built like tanks. This one acts as a 4M now because I
added the PS module to it and it has local talk support. No duplexer or extra
paper tray though :(.
> I've found that the age of the paper isn't as import
>If I'm not mistaken, high voltage capacitors on power supply. The corona wire
>isn't >charging the paper, so the image doesn't get transferred from the
>cylinder to the paper to >be pressed/fused in the fusor.
Alexander,
Thanks for the reply. Grant also suggested the same thing. I am turning
Quoting Chuck Guzis via cctalk :
Judging from the controls and lack of mechanical buffering, I'd
pronounce this to be a tape verifier, or possibly a cleaner. The "half
cycle" and "slow" are clues.
I just bought this Burroughs BU4400 tape drive:
https://www.trademe.co.nz/Browse/Listing.aspx?id=1
>
> """
> - Bad / dirty contacts to the hi voltage
> - Bad high voltage
> - Bad DC power supply.
> """
Grant,
So I took out the HV board and it was super dirty (I added pictures on the
thread in VCF at
www.vcfed.org/forum/showthread.php?69109-Help-with-LJ-4-Printer-Repair-Please&p=56456
On Tue, 2 Apr 2019, Ali via cctalk wrote:
While the printer was cold I ran another HV test and interestingly the
toner drum had a very faint picture on the drum. So it looks like the
toner is not being deposited on the drum appropriately until something
"warms up". The question now is, is this
Or the drum isn't getting charged in the first place, before light exposure
then toner dusting.
A way to check this: while the machine is in mid-copy, cut the power then open
it up and look at the drum.
Is there a toner image adhered to the drum section between where the surface is
image-exposed
On 4/2/19 2:26 PM, Glen Slick via cctalk wrote:
> On Tue, Apr 2, 2019 at 9:39 AM Bill Gunshannon via cctalk
> wrote:
>>
>> OK. I put them back to cn (I thought cn stood for console and the ttys
>> would be different, but fixed now). Sadly, I still get the "more than
>> three handlers" message an
> Since you are presumably going to keep this printer, once you fix it,
> or
> at least use it for large jobs where wasting the first few pages isn't
> a
> big issue, I would suggest getting another cartridge.
> You will need it, eventually.
> And, it provides a simple test to support or reject the
Hello Guy,
> Or the drum isn't getting charged in the first place, before light
> exposure then toner dusting.
> A way to check this: while the machine is in mid-copy, cut the power
> then open it up and look at the drum.
> Is there a toner image adhered to the drum section between where the
> sur
Ali via cctalk wrote on 4/2/2019 3:56 PM:
I rescued a LaserJet 4+ printer that I have been trying to restore.
Initially everything seemed ok and it seemed as if there may be just a bit
of an issue with paper pickup which I attributed to old paper in the tray.
However, soon I started getting the
On 4/2/19 3:04 PM, mike--- via cctalk wrote:
> Looks like you're right! I'm pretty sure it's a cleaner. Everything on
> it seems to work well, once I figured out how it was intended to work.
> Just had fool the tape optical sensor (BOT/EOT?) with a piece of paper
> and it started up fine. It only
You could well have a temp sensitive HV supply or excess moisture in it that
keeps the HT low until the warmth of operation dries it out. Given the problem
returns each time, a temp sensitive HV sounds likely.
Not sure how quickly you could remove and replace the supply but you might
trying us
On 4/2/19 4:57 PM, Guy Dunphy via cctalk wrote:
One other tip that might be useful. Very commonly with old photocopiers
and laser printers the rubber pick-up and paper feed rollers lose their
'tack' and slip on the paper. I found that briefly soaking them in
teatree oil restores the 'tack' qui
>>On Apr 1, 2019, at 7:11 PM, Kevin Parker via cctalk
wrote:
>>
>>This will mostly interest TRS-80 enthusiasts on this list.
>>
>> Check it out at theretrosearch.com
>>
>Thank you for this, Kevin!
This is awesome Kevin!
Terry
On 4/2/19 2:47 PM, Ali via cctalk wrote:
Yes, these guys were built like tanks. This one acts as a 4M now because
I added the PS module to it and it has local talk support. No duplexer
or extra paper tray though :(.
It was really a 4+. I picked it up for $1 ~ $10 at a ham fest. I then
maxed
Hey Tony,
Here is a 10-pack of 9-track tapes for $10USD:
https://www.ebay.com/itm/BASF-9-Track-Mag-Tapes-Brand-New-Case-of-10/112152910883
Shipping to NZ will probably be $100... I bought one of these boxes and
could send you a single tape if you need it, but I imagine there's someone
with a tape
On 4/2/19 4:20 PM, Ali via cctalk wrote:
So I took out the HV board and it was super
dirty (I added pictures on the thread in VCF at
www.vcfed.org/forum/showthread.php?69109-Help-with-LJ-4-Printer-Repair-Please&p=564565
).
I saw.
Nothing that should really prevent electrical flow but I clean
On 04/02/2019 02:56 PM, Ali via cctalk wrote:
I rescued a LaserJet 4+ printer that I have been trying to restore.
Initially everything seemed ok and it seemed as if there may be just a bit
of an issue with paper pickup which I attributed to old paper in the tray.
However, soon I started getting
Quoting Chuck Guzis via cctalk :
If you're going to use this thing, do check the carbide (sometimes
ceramic) cleaning blade. You want the edge to be sharp and smooth; if
it's nicked or chipped, it will end up doing more harm than good.
In this case, it's really just for show - I don't have a r
Quoting Anders Nelson via cctalk :
Here is a 10-pack of 9-track tapes for $10USD:
https://www.ebay.com/itm/BASF-9-Track-Mag-Tapes-Brand-New-Case-of-10/112152910883
Shipping to NZ will probably be $100... I bought one of these boxes and
could send you a single tape if you need it, but I imagine th
On 4/2/19 7:23 PM, mike--- via cctalk wrote:
> The shipping guess was damn close - $97.94 (approx. NZD143.54), plus
> US$10 for the actual tapes. It actually sounds like quite a good deal,
> for brand new tapes. Thanks for the offer of the tape, if I get stuck
> I'll drop you a note.
It's $60 shi
On Tue, Apr 2, 2019 at 5:09 PM Bill Gunshannon via cctalk
wrote:
>
> > Try deleting everything on the device entry lines after "cnxint"
> >
> > (For reference, "cnrint" and "cnxint" are the names of the interrupt
> > handler routines in src/sys/pdp/cons.c Those names have to match to
> > be able
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