I tried to run the diskless controller test on my PDP8/A. It fails before
any tests has been executed. I suspect that my RL8A controller is broken.
The CPU tests and the memory tests works fine.
The test stopped @ address 5713 (display shows 5714), MD buff = 7402, AC = 0
Does anybody have the source code to this test? Earlier someone got the
test instructions photographed from microfishie.
The complete story is that the machine worked just fine, booted OS/8. Then
I changed the CPU from KK8A -> KK8E. The KK8E had some problems, but works
fine now. But now the machine doesn't boot OS/8 with any of the CPU's. The
diskless controller test stops at the same location with any CPU.
Further to my posts this morning I have one last hurdle to jump.
1. I have a VAX with a TK70 attached and a TQK70 controller.
2. The tape drive works just fine.
3. Also on the VAX I have the correct tape (.TAP) image file for a
RSTS/E V10 install tape.
4. I would like to copy the .tap file to the tape so as to end up with a
bootable install tape.
5. I then power down the VAX and move the controller to an 11/83. (The
drive is external with its own PSU)
6. Boot the install tape and go from there.
So suggestions please as to how to do 4.
----- Original Message -----
> Date: Sun, 22 May 2011 22:56:32 -0500
> From: Daniel Seagraves <dseagrav at lunar-tokyo.net>
> Subject: Re: Scraping DEC Equipment
> To: "General Discussion: On-Topic and Off-Topic Posts"
> <cctalk at classiccmp.org>
> Message-ID: <C7A98127-DFF4-41B1-A6AF-5DFCA234D286 at lunar-tokyo.net>
> Content-Type: text/plain; charset=us-ascii
> I need a tractor feed assembly for a LA100, are the ones on the 120
Apparently not, but I might have one for an LA100.
I'm trying to get my 11/94 running. Its a hybrid having both Q
and Unibus. The CPU card has a KDJ11-E
18Mhz processor with 4Mb ram and six serial ports plus the console on
board. Apart from a voltage monitor card
that's all there is in the Qbus section.
Between the Q and Unibus sections is a special convertor card (KTJ-11B
After the KTJ-11B I have one slot with an RX211 8in floppy controller in
All of the other slots have bus grant cards except the last one that has
a terminator card and a MLM card.
On switch on the console display comes up. Whilst it performs the same
functions as the one in the manual
it looks different. What ever I do by way of setting up devices I can't
get it to talk to the RX211.
it just says No Controller.
Date: Mon, 30 May 2016 12:18:37 -0700
From: "r.stricklin" <bear at typewritten.org>
To: "General Discussion: On-Topic Posts" <cctech at classiccmp.org>
Subject: Re: Xerox Star install floppies
Message-ID: <7507C1FC-A36D-4130-B729-3F0FD6F2CDB5 at typewritten.org>
Content-Type: text/plain; charset=us-ascii
On May 29, 2016, at 9:15 PM, David Griffith wrote:
> This person then stated that Al Kossow might or might not have a full set.? In any case, it's not on Bitsavers.? Al expressed interest in a set that I offered a couple months ago, but he never followed up on that.? So, would someone please confirm the existance of a full set of install floppy images for the Xerox 8010 Star somewhere?
I've been buying those lots on eBay as I've seen them come by. I sent Al copies of them last week, or possibly the week before (the days run together). I'm not sure whether they constitute a full set of anything, either, but I assume Al will let me know.
> ViewPoint 1.1 (file check)
Of the four you listed, this one I don't have.
Don Maslin had most of them.? I sent copies of mine to him and he sent
copies of his to me. of coarse that a few years ago.
Been rummaging in the garage for stuff I'll be exhibiting in the UK in July
and found this:
It's a 4-slot cage containing:
M7270 11/03 CPU
M7944 4K RAM (x2)
There's a fault label on the M8027 saying it occasionally drops characters.
Question is, anyone know what it was out of?
Binary Dinosaurs creator/curator
Www.binarydinosaurs.co.uk - the UK's biggest private home computer
Speaking of the HP Vectra keyboard. This portable Vectra here has a *very*
similar keyboard to the one that I was mentioned earlier in the keyboard
thread. I'd imagine it's of the same ilk.
Something about the design of these old "slab" portables has always been
interesting to me. I know Dell has made a few "portables" post 2000 that
are much larger and more of a "portable desktop replacement". I've seen
them include somewhat-nicer keyboard with laptops to distinguish them (I'm
thinkin' of the Thinkpad and some HP elite laptops). However, I haven't
seen any modern machines ('cept luggables) that include "real" keyboards
like this Vectra, Compaq, and others managed to do in the 80's.
Also I love this photo. I could write 10 different short stories about
what is *REALLY* going on this promotional photo:
Manager = Blaine Jones
Scientist = Janice Thornwinkle
Blaine: Once I copy your research to this disk it'll prove that your
research has no merit. We are probably going to shut the project down.
Janice: Really sir?! We just about cured cancer here!
Blaine: I just know you are going to spill some of that blue crap in those
beakers on this new machine. I bet I can back up all your data on this
floppy alone. Then I'm taking this laptop back to my office to watch porn.
It's got CGA, after all.
Janice: What? No. I never.. I mean...
Blaine: Well, since this is your last day. I'll need a copy of that graph.
Janice: Hmm? (I think I could kill him with this mechanical arm thing.)
.... and so forth....
> Date: Sat, 28 May 2016 09:18:11 -0700 (PDT)
> From: geneb <geneb at deltasoft.com>
> What I don't understand is why Windows is being used on these devices at
> all. It specifically states in the license that it's not to be used with
> life-critical systems or infrastructure (like nuclear plants). I wish I
> could find a reference - I can't recall where I read that...
That disclaimer was for Sun Java, not Windows itself.
I'm very interested on TU58, as I have a lot of tapes that I need to dump,
plus I would create some new (console at start) for my vax 730.
What I'm trying to do: use a drive mechanism connected with to modern mixed
signal microcontroller with USB port.
The device will be able to control the tape speed and to sample with ADC
and DAC the analog signals on the read / write heads, transferring the bare
samples with almost no filtering to a PC.
Then all the processing can be done via software.
In this way, a weak data track can be maybe recovered, and an empty tape
can be formatted.
It's impossible to use the tape drive with a DEC machine or via serial
port, but I'm not trying to emulate the standard TU58.
If somebody is interested, I can share my ideas, I already begun with the
But I have to fix the capstan too...