first time I have seen such a thing...
Ed#
In a message dated 1/16/2016 6:46:54 P.M. US Mountain Standard Time,
michael.99.thomp...@gmail.com writes:
>From: Jay West jwest at classiccmp.org
>
>I have two "flippy organizers" (that's around 20 floppies each) full of
>these oddball floppies
Our website was updated, new URL for the PDP-12 is now
http://c-c-g.de/aktuelles/100-nachrichten/311-pdp12-gekauft
Joerg
Am 11.01.2016 um 00:06 schrieb william degnan:
Joerg,
Take a look at a picture of our PDP-12. It has a PDP-8/I next to it as in
your picture.
http://www.ricomputermus
>From: Jay West jwest at classiccmp.org
>
>I have two "flippy organizers" (that's around 20 floppies each) full of
>these oddball floppies.
>
>Picture at
>https://www.flickr.com/photos/131070638@N02/22020178558/in/dateposted/
>
>They are 8", hard sectored, and the sectors are on the outer edge rath
> If it were me, I'd start by setting up some tests to determine what exactly
> the protocol analyzer is doing. If it really is dropping 0 bytes, then I'd
Well, I see 2 ways forward, in that I have found 2 things that look odd...
One is to investigate the serial link between the VAX console pro
> While the TU-58 tape will not have an RT-11 file
> structure, you can at least read each raw block
> and display the contents:
Actually I believe the VAX11/730 console tape is an
RT11 file system (for all there is no PDP11 involved).
-tony
> Moral objections have nothing to do with getting as many tools on a
> problem as you can.
True. But if you don't have said tools set up and working, you may find
(or at least I will find) that when somethng doesn't work you are not sure
if the problem is a genuine fault or misuse/misunderstandi
Get a food dehydrator there's a specific one recommended out in the audio
world for sss can't remember what it is
On Jan 16, 2016 11:39 PM, "Lee Courtney" wrote:
> Mattis et al,
>
> I also ran across this info, here are links to the article and related
> material:
>
> Paper:
>
> https://www.dropb
Mattis et al,
I also ran across this info, here are links to the article and related
material:
Paper:
https://www.dropbox.com/s/edgts703ycr1j7l/The_new__non-baking__cure_for_.PDF?dl=0
Correction:
https://www.dropbox.com/s/57vgollh4b8im5j/Correction___clarification.PDF?dl=0
Patent: https://www.dro
>tony duell wrote:
Similarly, it could be a useful diagnostic tool to connect the real
TU58 hardware to a known-working (presumably slightly more modern)
machine to see if it's willing to work that way.
Yes. Does such a program exist? Something that will let me send commands
to the TU58 and se
On 01/16/2016 02:31 PM, tony duell wrote:
800 BPI (NRZI) only has transitions on a data track when
As I understand it the TU58 is not NRZI.
WHOOPS! I Somehow read that as one of the 1/2 9-track tape
drives!
Jon
On 1/16/2016 12:26 PM, tony duell wrote:
Powering up gives the expected ROM> prompt on the terminal. Of course all
you can
do at that prompt is load the microcode from the TU58, so that is what I
am trying to
get working. And getting nowhere!
And you don't want to use a TU58 emulator? (Or you
On 2016-01-16 14:15, shad wrote:
After full disassembling, cleaning and reassembling, I'm ready to try it!
PSU seems to work well, power goes on with almost precise voltages, then
all the test leds on the back will lit on...
then nothing happens! No video, no sign of life.
And they stay AL
Hello,
I recently took a DEC Rainbow PC100-A.
It has been a huge house for a lot of spiders, who deposited eggs and
dead insects all around.
After full disassembling, cleaning and reassembling, I'm ready to try it!
PSU seems to work well, power goes on with almost precise voltages, then
all the
On Sat, 1/16/16, tony duell wrote:
> I tried a RS232 analyser between the TU58 and the VAX. Very odd. Either
> my RS232 anaylser drops 00 bytes or the TU58 sets short result packets. The
> meaningful bytes (response code, etc) are there, but things like the sequence
> number are not. Odd...
>
> D
(...but then who isn't).
I'm looking for a mass-storage device for my PDP-11/44, and I'm having
worse and worse luck with my current solution, an Emulex SMD controller
-- drives just keep going south on me (the controller works fine, though...)
I know how hard these things are to find, but if
On Sat, 16 Jan 2016, Don North wrote:
On 1/16/2016 2:04 PM, Steven Hirsch wrote:
Title says it. Perhaps I'm being stupid about search terms, but I'm not
finding much of anything on eBay. One seller has TSOP tubes, but I need
plain, old 300mm DIP tubes. End plugs and pins for them as well.
On 1/16/2016 2:04 PM, Steven Hirsch wrote:
Title says it. Perhaps I'm being stupid about search terms, but I'm not
finding much of anything on eBay. One seller has TSOP tubes, but I need
plain, old 300mm DIP tubes. End plugs and pins for them as well.
Plenty of companies offering them on th
On Sat, Jan 16, 2016 at 7:53 AM, pdaguytom . wrote:
> I'm trying to get a response from the gentleman, I'd like to try to pick
> it up.
> On Jan 16, 2016 1:15 AM, "Mark Linimon" wrote:
>
> > Of course I will go pick it up to prevent it from going to the dump,
> > if no one else will. I am in A
Title says it. Perhaps I'm being stupid about search terms, but I'm not
finding much of anything on eBay. One seller has TSOP tubes, but I need
plain, old 300mm DIP tubes. End plugs and pins for them as well.
Plenty of companies offering them on the web, but all are oriented for
production
>
> I can certainly understand that. But a TU58 emulator could be a useful
> diagnostic tool. Personally, I would try to get it working from the
Agreed. But a diagnostic tool is only useful if you can trust it. I suspect
that if
I tried to set up a TU58 emulator I would have problems due to m
>>> Of course all you can do at that prompt is load the microcode from
>>> the TU58, so that is what I am trying to get working. And getting
>>> nowhere!
>> And you don't want to use a TU58 emulator?
> No, I don't want to use a TU58 emulator for the same reason that I am
> restoring this VAX and n
>
> > I had considered that, or one of the TU58 emulators that use SD cards or
> > similar but (a) I am trying to restore this VAX, not make a machine that
> > runs
> > VAX software and is not original and (b) I do have this moral objection to
> > using more components to load the microcode than
On Jan 16, 2016, at 12:15, tony duell wrote:
> I had considered that, or one of the TU58 emulators that use SD cards or
> similar but (a) I am trying to restore this VAX, not make a machine that runs
> VAX software and is not original and (b) I do have this moral objection to
> using more com
> 800 BPI (NRZI) only has transitions on a data track when
As I understand it the TU58 is not NRZI.
According to the manual (and I see this sometimes) a 'bit cell'
starts with a +ve magnetic flux transition (OK, that is meaningless,
it really means there is a +ve edge at the output of the read
co
On 01/16/2016 11:44 AM, tony duell wrote:
So I get that
a bit should take around 41us. And a bit starts with a rising edge, the
position of the falling
edge (recorded at 1/4 or 3/4 of the bit time) determines whether it's a 0 or 1.
No, not correct for 800 BPI (NRZI). That is somewhat how
160
> >
> > Powering up gives the expected ROM> prompt on the terminal. Of course all
> > you can
> > do at that prompt is load the microcode from the TU58, so that is what I
> > am trying to
> > get working. And getting nowhere!
> >
>
> And you don't want to use a TU58 emulator? (Or you enjoy waitin
Hello,
well, if you see square waves, probably the read path analog circuit
could auto-oscillate.
This could be because of poorly filtered supply (bad electrolytic
capacitors),
or possibly some component in the feedback that's not soldered well.
I should have a schematic around, I could give a
> > Does anyone have any sensible ideas as to what to try next. At the moment I
> > have no idea if
> > it's the tape, heads, roller or what
> >
> This might not be what you want, but I boot my 11/730 from a tu58
> emulator running on a linux box. I used a little ttl<->rs232 converter
> board
Some comments inline. Mostly is maybe obvious...
2016-01-16 18:44 GMT+01:00 tony duell :
>
>
> Powering up gives the expected ROM> prompt on the terminal. Of course all
> you can
> do at that prompt is load the microcode from the TU58, so that is what I
> am trying to
> get working. And getting no
On 1/16/16 12:44 PM, tony duell wrote:
Does anyone have any sensible ideas as to what to try next. At the moment I
have no idea if
it's the tape, heads, roller or what
This might not be what you want, but I boot my 11/730 from a tu58
emulator running on a linux box. I used a little ttl<->
I am not sure this fits in with the current topics of this list on the grounds
it involves
real old hardware, but anyway..
I am currently trying to restore a VAX11/730. I got this about 20 years ago and
dismantled it to get it home. For various reasons I never put it back together,
I
am doing t
On 01/16/2016 03:02 AM, Mattis Lind wrote:
I haven't read the article in ARSC since I am not a member. But maybe
someone knows what this is about?
Much ado, IMOHO, about little.
There's an associated patent:
https://patentimages.storage.googleapis.com/pdfs/US6797072.pdf
that relates to this
I'm trying to get a response from the gentleman, I'd like to try to pick
it up.
On Jan 16, 2016 1:15 AM, "Mark Linimon" wrote:
> Of course I will go pick it up to prevent it from going to the dump,
> if no one else will. I am in Austin.
>
> mcl
>
Yes, that can be done, but there are some issues... aka the psu must have some
basic values for the lines, and finding one suitable can be a problem. Plus if
I remember right you need to have the connector (in my case I don't have it),
to swap it and tweak the cables (with the hope of not doing
I was trying to archive a bunch of 8 inch floppy disks. Everything was well
until I tried an Inmac brand disk. It had severe sticky shed problems.
Since it was a non-important disk it wasn't that bad. Baking might solve
the problem so before continuing with the rest of the Inmac branded disks
with
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