> From: J?rg Hoppe
> I'm talking of that data path check up after power-on.
Huh, I never knew about that. (The manuals don't mention it.)
I was just last night looking at the microccode for the 11/04 (a very similar
machine - they share the front consoles, etc), and it doesn't have anything
like that (see the /04 power on ucode at pg. 130 of EK-KD11D-TM-PRE).
Looking through that /34 ucode flow diagram, I discovered that the /34
supported the M[FT]PS instuctions - I thought that was only the QBUS CPU's,
etc.
Live and learn! :-)
Noel
> From: Devin Davison
>> If the machine HALTs on power-up, some micro coded diagnostic failed
There are no microcoded diagnostics in the 11/34. The boot ROMs do contain
minimal CPU and memory diagnostics.
> using pdp11gui to load the dec diagnostics sounds like the way to go.
The CPU and UNIBUS have to be basically working for the boot ROMs (and the
console emulator they provide via the console serial line) to work; ditto for
PDP11GUI. Note that the console emulator will work without working memory,
provided the correct boot option (console emulator without diagnostics) is
configured on the card that holds the boot ROMs. You won't, of course, be
able to load anything without working memory.
And the Programmer's Console doesn't require working memory either, and a lot
less of the CPU working - the CPU only has to respond to HALT requests from
the console. (I had one /04 - very similar to the /34, uses the same front
console - which didn't run because there was a bit stuck on in all the
registers - but the console still worked.) It does require the UNIBUS not to
be wedged, though.
Noel
Hi, All,
Good seeing many of you at VCF-midwest. One of my scores was an
Atari-badged Novation CAT modem. Digging around for any docs, what
I'm mostly finding is lots of info about Novations Apple II products,
and scant mention with thumbnail pictures of the original CAT acoustic
coupler, that and dozens of sites copying the Wikipedia article.
Anyone have any CAT info? I can reverse-engineer the schematic, but
if that's already been done, no reason for me to redocument the wheel.
I know it wants a 20VAC 400mA PSU, but I want to check how strict that
is (i.e., 18VAC @ 500mA or 24 VAC @ 350 mA, for example, which may be
easier to find than an unregulated 20VAC PSU).
I would love to play with a CBM 8010 (since I have so many PETs) but I
do happen to have a couple of IEEE-488 to RS-232 devices, which will
work fine with this Atari 830/Novation CAT.
-ethan
Just two random pieces that I've been after for my collection:
#1. Sun Voyager tote bag. The bag the computer goes into.
#2. BeBox front plastic part, and the IO board for a BeBox. Have a dual
66Mhz that is case, PSU and mobo only. Would like to complete it.
Thanks.
--
Ethan O'Toole
Joe - is that the direct connect one of the acoustic coupler? I
any event SMECC would love a copy to for our files at the museum
here.
A side issue there was a Novation coupler - modem... a white one that
the phone would sit on. with coupler cups to the side. Does anyone have
any photos, advertising, etc etc... on this ?
Thanks Ed # _www.smecc.org_ (http://www.smecc.org)
In a message dated 9/13/2016 3:32:00 P.M. US Mountain Standard Time,
fast79ta at yahoo.com writes:
On 9/13/2016 1:58 PM, Ethan Dicks wrote:
> Hi, All,
>
> Good seeing many of you at VCF-midwest. One of my scores was an
> Atari-badged Novation CAT modem. Digging around for any docs, what
> I'm mostly finding is lots of info about Novations Apple II products,
> and scant mention with thumbnail pictures of the original CAT acoustic
> coupler, that and dozens of sites copying the Wikipedia article.
>
> Anyone have any CAT info? I can reverse-engineer the schematic, but
> if that's already been done, no reason for me to redocument the wheel.
> I know it wants a 20VAC 400mA PSU, but I want to check how strict that
> is (i.e., 18VAC @ 500mA or 24 VAC @ 350 mA, for example, which may be
> easier to find than an unregulated 20VAC PSU).
>
> I would love to play with a CBM 8010 (since I have so many PETs) but I
> do happen to have a couple of IEEE-488 to RS-232 devices, which will
> work fine with this Atari 830/Novation CAT.
>
> -ethan
I have the manual for a 103/212 smart cat modem. PN 490418-1/490521-1.
Circa 1982
Is that what you need?
Cheers, Joe
Al - I have had them with 7 and with 9 but never lucky enough to get the
dual headed one... yea... well worth putting online. do you have a link
to any sales info on this? I used to hear of these but never laid eyes
on one. Ed#
In a message dated 9/22/2016 10:32:09 A.M. US Mountain Standard Time,
aek at bitsavers.org writes:
I'm trying to decide if I want to attempt getting my 7970 with a dual 7/9
track head
running this year.
Hello, made some progress with the pdp 11/34 I picked up a while back.
Managed to repair the faulty power supply. I am in the process of trying to
get a minimal configuration of the machine up and running.
I am looking for a short program to key in to try and test the
functionality of the cpu. Is there anywhere aside from the DEC manuals I
could go to get a quick idea of how to operate the front panel? The manual
is very in depth, however i am looking for sort of a quick start guide to
get started pretty quickly. Any site with info on how to operate the front
panel or some quick short programs i can key in would be of interest.
I almost have the whole machine put back together on my desk, if all goes
well and it runs as expected, i want to post back with some nice orderly
pictures of it in the rack next to all the drives and the tape Drive.
Progress overall with the whole machine has been slow going, the machine
came with a heap of rsx 11 disk packs and tapes, however I am not to the
point where i can use them just yet. Ive been kinda itching to see whats on
those tapes, hopefully soon.
--Devin
Based on the decoding suggested by Christian, I am plodding on but no success so far.
I am not 100% sure that this is M2FM.
>I'd still like to get a 9885/9895/7902 M2FM flux-transition disk
>image, if anyone has one handy that they'd be willing to share.
I will send the image stream to Eric
Denise
________________________________
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Lecturer
Computer Archaeology Laboratory
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GPO Box 2100
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Hi all,
I have a Norsk Data ND110324 9-track drive which is a rebranded
StorageTek 2920 with SCSI interface. So far I have only found a single
manual for it, a quick guide card of 10 pages.
Is there a manual out there which describes the unit a bit more in
depth, like setting the SCSI address, diagnostic program codes, service,
technical specifications and so on.
So far I have got it to load a tape automatically and detect the
recording density. Next step is to get it to talk to a linux-computer
for imaging some old tapes.
Thanks in advance,
G?ran
I took a look at the Tektronix 4051 that we got a few years back. After
checking the PSU I turned it on and it seemed to start up fine. The machine
responded well to the keypresses but it was hardly readable on the screen.
Anyone that can give advice on what is wrong and how to deal with it. The
text on the screen is very faint and many characters are scrambled as if
the beam was moving when the points where plotted. When typing there is a
flash of the beam which is then stored as the scrambled text.
http://i.imgur.com/iQhQW67.jpg
It probably reads "SYNTAX ERROR" something on the screen.
My experience with DVST device is minimal. I used an old Philips storage
oscilloscope many years ago but I don't remember the screen to be this dull.
It seems like the storage system is not at full output. Unfortunately I am
not getting a good understanding on how the DVST system works from reading
the service manual. What is the purpose of the timers for cursor and
character intensity?
I am about to check all the voltages related to the display mentioned in
the calibration section of the manual, but just in case someone directly
recognize what kind of problem there is I would be much interested.
/Mattis
