On Jun 6, 0:40, Tony Duell wrote:
> > Last time I saw a DX11, it was a whole rack, not just one card. I
>
> Yes. 8 rows of flip-chip cards (almost all slots used) + a PSU, a
lights
> panel, and a power interlock IIRC.
>
> > think I know where to find something to connect it to, though :-)
>
> Which, presumably, is even bigger than my 11/45 system :-)
A bit :-) The pile of cables is probably bigger than your 11/45. It's
an IBM belonging to Jim Austin, who lives not far from me:
http://www.austinfs.fsnet.co.uk/
--
Pete Peter Turnbull
Network Manager
University of York
Does anyone have a couple (2) of the AMP 10 pin connectors (with unused pins)
used with the DLV-11J 4 port serial I/O boards or know where I could purchase
them?
What I actually need is a RS232 cable DB25 to AMP 10 ?, but I am willing to
make the DB25 part myself, something I've done zillions of times.
I am currently working on bringing up my "new" PDP-11/23 that I recently
picked up. This chassis, once verified OK, will be used as a test bed to check
out the bunch of QBUS boards I have, including CPU's, memory, and some I/O,
mostly serial. Eventually I hope to bring up a 11/53 like the one Jonathan
Engdhal built.
Thanks in advance!
Stuart Johnson
On Jun 5, 21:45, Tony Duell wrote:
> I got a boatload of comms cards in a clearout. DUP11s, DMC11s,
DMR11s, a
> KMC11, etc. Even a couple of DX11s (not, that's not a typo for RX11).
> Pity I've not nothing to connect the latter to.
Last time I saw a DX11, it was a whole rack, not just one card. I
think I know where to find something to connect it to, though :-)
--
Pete Peter Turnbull
Network Manager
University of York
This might be of interest to someone here...
Jim
-------- Original Message --------
Subject: [swap] WTB: Technical/Scientific Mac Hardware + Software
Date: Thu, 5 Jun 2003 17:39:44 -0400
From: "Tom Bannon" <bannonth(a)egr.msu.edu>
To: "LEM Swap List" <lem-swap(a)mail.maclaunch.com>
LEM-Swap is for buying & selling Mac stuff. It is not a discussion list.
See the FAQ for guidelines on
postings, feedback, and dispute resolution.
--------------------
To those of you that come across box lots of software or unusual
hardware:
I'm for older versions of scientific analysis, data logging, image
analysis software that runs on biege Powermacs or even 68ks. Hardware
interfaces that control scientific instruments are also of interest.
Things that are biotech related would me most useful, but if you've
bought box lots of software or hardware and think something might be
laboratory related drop me a line.
Its great to put older Macs to work in the lab even if the
software/instrument isn't state of the art.
Tom Bannon
48917
On Jun 5, 22:41, Peter Turnbull wrote:
> On Jun 5, 17:31, vance(a)neurotica.com wrote:
> >
> > And what do you do if you want to use a QQQQ-only processor in a
QQCD
> > backplane? Put it in the QQQQ-end?
>
> I've never heard of a QQQQ-only processor. Do you have one in mind?
OK, so I've just thought of one that might be. An early 11/03
quad-height M7264 was meant for a Q-Q H9270 backplane and presumably
that's what Sridhar is thinking of. However, I don't think it's what
he calls a QQQQ-only processor.
I'd have to look at the print set or a board to be sure, but IIRC the
M7264 actually has Q-Bus on its A&B slots, so it would be OK in a Q-CD
backplane, so long as the module underneath it didn't use the upper
contacts on its own C&D slots (C and D aren't bussed; the lower
contacts on C&D are only connected to the upper contacts of the slot
below).
However, just before I hit "send", Sridhar told me what he *was*
thinking of:
> Yeah. DECsystem 5500. (MIPSFAIR-2) Chuch McManis told me it's
> QQQQ-only. It normally fits into a BA430 which is a BA440 with no
> PELE stuff in it. It uses out-of-band signaling (on ribbon cables)
> for RAM.
The short answer is "I don't know". FWIW, here are my thoughts. I
would be amazed if it put any signal(s) on the relevant pin(s) on
*both* the A&B and C&D slots (because that would lead to multiple
signal paths). I'd be rather surprised if it put some on A&B and some
on C&D, but if it did, or if it put QBus signals on C&D, it would
definitely have to go in the first Q-Q row. Or maybe the second,
something I saw about it suggests an I/O module is supposed to go in
front of it, and then the argument applies to the I/O module, really.
However, the logical way to build such a board would be with the QBus
signals on A&B, like I believe the M7264 does -- unless the bus length
is critical, and it needs the shortest path between the first and
second rows, which is the C&D slots. But would it physically fit any
other backplane than its own? Don't those new-fangled things have
different handles to anything that fits a Q-CD backplane?
Chuck?
--
Pete Peter Turnbull
Network Manager
University of York
Hi Bryan
That is OK, as it turns out, he had a 50Hz motor
anyway to match his line. He seems to have moved on
to other more serious problems.
Dwight
>From: "Bryan Blackburn" <oldcomp(a)cox.net>
>
>Okay... That's what I get for not reading the original post!
>
>-Bryan
>
>Dwight K. Elvey wrote:
>
>>Hi
>> The right idea, wrong direction. I would think that a
>>60Hz inverter would work fine. You could get one of those
>>automatic leveling battery chargers, a small gelcel and
>>a 60Hz inverter.
>>Dwight
>>
>>
>>
>>
>>>From: "Bryan Blackburn" <oldcomp(a)cox.net>
>>>
>>>Wouldn't it be so much easier to make a power inverter to run at 50 Hz
>>>and save all the time and expense of finding gears & etc. & etc.?? I
>>>have a power inverter that would be a simple cap change (two of them) to
>>>run 50 Hz. Output power is about 250 Watts now, maybe 175-200 at 50 Hz
>>>(or would it be more?)? How much power does a 33 take? Discuss...
>>>
>>>-Bryan
Hi Matt
I don't have a GP-6 or GP-10. I do have a EC-1. I would
suspect that you could do the bouncing ball simulation
with the GP-10 ( I assume that means it has 10 op-amps ).
The things you need besides capacitors and resistors
is a couple of diodes for the nonlinear things ( like
the ball bounce on the ground ) and sine/cosine source.
The computer needs reset relays to set initial values
for the integrators and pots to generate the constants.
The HeathKit has you make an external sine/cosine source,
using 60Hz from the wall. This typically doesn't do
vary good with the noise that most modern equipment
has, since they make the 90 shift with a highpass.
The original Heathkit example used 9 op-amps but I
came up with a way to do it with only 8. This leaves
two to make a sine/cosine oscillator. I'll have to dig
up the schematic that I put someplace. You can live
without the sine/cosine, since it is just to make the
ball round.
To display, you need an oscilloscope or a X-Y plotter.
As for setting the unit up, I suspect there is a
balance adjustment for each op-amp. For my tube machine,
I found that I had to balance the integrators for
zero drift instead of zero voltage offset. I suspect
that this is because input current offset and input
voltage offset are not the same thing.
Dwight
>From: "Matthew Wadham-Gagnon" <mwadha(a)po-box.mcgill.ca>
>
>Hi Dwight,
>
>I've been looking for examples/labs that would take me through the correct
>procedure to setup/operate a GP-10 analog computer. I found your email in a
>discussion about the GP-6 along with links to two labs on how to use it. They
>seem pretty good except for a few details that probably apply specifically to
>the GP-6.
>
>Thanks,
>
>Matt
>
>Matthew Wadham-Gagnon
>McGill University, Montreal
>Mechanical Engineering, Honours
Hi
The right idea, wrong direction. I would think that a
60Hz inverter would work fine. You could get one of those
automatic leveling battery chargers, a small gelcel and
a 60Hz inverter.
Dwight
>From: "Bryan Blackburn" <oldcomp(a)cox.net>
>
>Wouldn't it be so much easier to make a power inverter to run at 50 Hz
>and save all the time and expense of finding gears & etc. & etc.?? I
>have a power inverter that would be a simple cap change (two of them) to
>run 50 Hz. Output power is about 250 Watts now, maybe 175-200 at 50 Hz
>(or would it be more?)? How much power does a 33 take? Discuss...
>
>-Bryan
>
>Tony Duell wrote:
>
>>>Hi
>>> One could buy a new pulley and add some additional capacitance
>>>
>>>
>>
>>IIRC, the coupling between the motor and the rest of the mechnism
>>consists of a pair of helically-cut gears on the end of the motor (one on
>>the motor spindle, the other on a separate spindle). The driven gear is
>>moulded integrally with a sprocket for a toothed belt that goes to a
>>larger sprovket on the transmitter shaft.
>>
>>The gears are almost certainly custom parts and would not be easy to get
>>now (unless you know of a souce of Model 33 parts...). Making them would
>>also be non-trivial, I think, at least in most home workshops.
>>
>>
><snip>
On Jun 5, 17:31, vance(a)neurotica.com wrote:
>
> And what do you do if you want to use a QQQQ-only processor in a QQCD
> backplane? Put it in the QQQQ-end?
I've never heard of a QQQQ-only processor. Do you have one in mind?
--
Pete Peter Turnbull
Network Manager
University of York
Hello people. Is there any way to tell if a backplane is QQQQ or QQCD by
looking at it, and without having to pull the backplane out of the
chassis? What if I can find the model number of the chassis?
Peace... Sridhar
>> I came across a whole boxful of Apple II cards at the weekend that I'd
>> forgotten I actually owned.
>
> Things get buried way to easily in this "Hobby",
yes they do - I've been moving around too much the last few years so pretty
much everything's been in storage. Hopefully all of my Sinclair and Acorn stuff
should be going on loan to a local technology museum at some point for display
- I hate the way everything's shut away in a room at the moment (er, actually
rooms, loft and with the bigger stuff in the garage :-)
> I was never really much of an apple user, came by my collection by
> fluike and just kept adding to it.
nor me. I was given an Apple /// with a couple of ProFile hard drives a few
years back and it started from there - I'm not sure what strange cards are
lurking in the machines themselves at present.
If anyone comes up with anything interesting on these boards I'll let you know;
I've posted the same questions to comp.sys.apple2 but I'm not sure how active
the group is these days.
As far as the Z80 card goes a quick search of the 'net revealed a lot of 'Z80
card' boards but not 'Z80 card II' boards. I have no idea if the different name
is significant or not yet :)
cheers
Jules
> Is that Mitac computer an Apple II clone?
I hope to find out in the next few days :-} I believe I was given it about 6-7
years ago and it's been on the list of things to look at someday ever since!!
It was next to the box of cards in the room where most of my comps are stored,
so I fished it out with the hope of trying to see if it works sometime over the
next few days.
It almost certainly appears to be a Japanese Apple 2 clone though, with
built-in disk interface, 80-column output, RF output (unsure whether that's
NTSC or PAL or even something else yet), joystick interfaces etc. all on two
boards within the machine - there's even a Z80 CPU in there but I'm not sure if
it behaves like a 'proper' CP/M card or if it's just there to control some of
the machine's hardware. Pretty loaded-up little beast anyway.
I've got both 120V and 220V power supplies for it; why someone would have had
both I'm not sure but there you go. I've also got two of the units that connect
to the expansion socket at the back of the machine and provide standard
(assuming it is a clone!) A2 bus connectors - again I have no idea why I have
two, not like I can use more than one at once anyway!
My Apple 2 disk drives and any kind of suitable monitor are all too far buried
at the moment for me to get at them, but I'll check the machine over for
obvious probs before trying to hook it up to my TV sometime in the next few
days.
I couldn't find any information on the machine on the 'net, but then I suppose
in the Apple 2's heyday there were an awful lot of clone machines around.
cheers
Jules
It might be that the DE-9's don't have a standard PC serial pinout. At work, we have a UPS that uses a DE-9 for programming, but the pinout on the cable (a 940-0024C; Googling produces a number of hits) is
Female Male
1-4
2------------2
3------------1
5------------6
6 NC
7-8
9 NC
-----Original Message-----
From: Dave Brown [mailto:tractorb@ihug.co.nz]
Sent: Thursday, June 05, 2003 1:15 AM
To: cctalk(a)classiccmp.org
Subject: Re: Systems Enhancement Corporation Power Administrator 800
Maybe you drive it over the Ethernet port- I saw one of those devices a
couple of days back that had 8 or 10 power outlets, the DIP switch and a
single Ethernet port. Nothing else. Going to try and score it too, but
'he-who-has-it' is still considering if he really wants it!
DaveB
----- Original Message -----
From: "Geoff" <geoff(a)hasker.net>
To: <cctech(a)classiccmp.org>
Sent: Thursday, June 05, 2003 9:38 AM
Subject: Systems Enhancement Corporation Power Administrator 800
> I have come across what seems to be a remote outlet/power sequencer device
> from the Systems Enhancement Corporation called the Power Administrator
800.
> On the rear it has two DB-9 male ports, which I assume can be used to
program
> this device.
<snip>
This is OT but it's too good not to pass on. I'm sure that everyone on
the list can appreciate it.
Joe
>
>Subject: THIS IS GREAT!!!!!!!!!!!!!!!!!
>
>
>
>
>Let's see if I understand how the world works lately...
> If a man cuts his finger off while slicing salami at work,
> he blames the restaurant.
> If you smoke three packs a day for 40 years and die of
> lung cancer, your family blames the tobacco company.
>
> If your neighbor crashes into a tree while driving home
> drunk, he blames the bartender.
>
> If your grandchildren are brats without manners,
>
> you blame television.
>
>
> If your friend is shot by a deranged madman, you blame
> the gun manufacturer.
>
>
>
> And if a crazed person breaks into the cockpit and tries
> to kill the pilot at 35,000 feet, and the passengers
> kill him instead, the mother of the deceased
> blames the airline.
> I must have lived too long to understand the world as it
>is anymore. So, if I die while my old, wrinkled butt is
>parked in front of this computer, I want you to blame
>Bill Gates...okay?
>
>
>
>
>
>
>
>Bye!
>Have a Great Day!
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>____________________________________________________
> <http://www.incredimail.com/redir.asp?ad_id=309&lang=9> IncrediMail -
Email has finally evolved -
<http://www.incredimail.com/redir.asp?ad_id=309&lang=9> Click Here
>
>Attachment Converted: "C:\EUDORA\Attach\FWTHISIS.htm"
>Content-Type: image/gif;
> name="FwTHISIS1.gif"
>Content-ID: <710815C8-121F-4139-94FE-6336349A8D6F>
>Content-Description: FwTHISIS1.gif
>Content-Location: FwTHISIS1.gif
>
>Attachment Converted: "C:\EUDORA\Attach\FwTHISIS.gif"
>Content-Type: image/gif;
> name="FwTHISIS2.gif"
>Content-ID: <FCB9C175-2BC1-401A-A515-8DAA900E612E>
>Content-Description: FwTHISIS2.gif
>Content-Location: FwTHISIS2.gif
>
>Attachment Converted: "C:\EUDORA\Attach\FwTHISI1.gif"
>Content-Type: image/gif;
> name="FwTHISIS3.gif"
>Content-ID: <D8C2032E-045D-40F8-98CD-7A89E641F4B5>
>Content-Description: FwTHISIS3.gif
>Content-Location: FwTHISIS3.gif
>
>Attachment Converted: "C:\EUDORA\Attach\FwTHISI2.gif"
>Content-Type: image/gif;
> name="FwTHISIS4.gif"
>Content-ID: <8E209AD2-FCAA-44FF-8769-46BE8AAD29B2>
>Content-Description: FwTHISIS4.gif
>Content-Location: FwTHISIS4.gif
>
>Attachment Converted: "C:\EUDORA\Attach\FwTHISI3.gif"
>Content-Type: image/gif;
> name="FwTHISIS5.gif"
>Content-ID: <87ED2775-2554-4B7D-8C29-191C2D02F7C2>
>Content-Description: FwTHISIS5.gif
>Content-Location: FwTHISIS5.gif
>
>Attachment Converted: "C:\EUDORA\Attach\FwTHISI4.gif"
>Content-Type: image/gif;
> name="FwTHISIS6.gif"
>Content-ID: <0589F5D4-900C-4878-AF7F-9B3BE3BA6D2B>
>Content-Description: FwTHISIS6.gif
>Content-Location: FwTHISIS6.gif
>
>Attachment Converted: "C:\EUDORA\Attach\FwTHISI5.gif"
>Content-Type: image/gif;
> name="FwTHISIS7.gif"
>Content-ID: <0D1B9DEF-5218-452D-9D13-B9B0881FB148>
>Content-Description: FwTHISIS7.gif
>Content-Location: FwTHISIS7.gif
>
>Attachment Converted: "C:\EUDORA\Attach\FwTHISI6.gif"
>Content-Type: image/gif;
> name="FwTHISIS8.gif"
>Content-ID: <8C1048EF-1066-4862-B1ED-3F5618D8F126>
>Content-Description: FwTHISIS8.gif
>Content-Location: FwTHISIS8.gif
>
>Attachment Converted: "C:\EUDORA\Attach\FwTHISI7.gif"
>Content-Type: image/gif;
> name="FwTHISIS9.gif"
>Content-ID: <52DD19BB-8145-415C-B368-5609A0381025>
>Content-Description: FwTHISIS9.gif
>Content-Location: FwTHISIS9.gif
>
>Attachment Converted: "C:\EUDORA\Attach\FwTHISI8.gif"
>Content-Type: image/gif;
> name="FwTHISIS10.gif"
>Content-ID: <DC050A7C-43B1-4576-977B-FFF8CE02C708>
>Content-Description: FwTHISIS10.gif
>Content-Location: FwTHISIS10.gif
>
>Attachment Converted: "C:\EUDORA\Attach\FwTHISI9.gif"
>Content-Type: image/gif;
> name="IMSTP.gif"
>Content-ID: <BE513365-038F-4C72-845B-8811A6E46C10>
>Content-Description: IMSTP.gif
>Content-Location: IMSTP.gif
>
>Attachment Converted: "C:\EUDORA\Attach\IMSTP.gif"
>> Sellam indicated that he thinks the modulator came with all IIc's, but I
>> have to question... Why? The IIc already has a composite video out, so
>> why also ship with the modulator.
>
>To make it easier to hook into a television. Trust me on this one.
Never mind... I think I just realized it. I took another look at the
units and realized I was mistaken as to which one had the Channel 3/4
selector switch. I thought Apple included it into the "Switch Box",
leaving the "Modulator" to be completely redundant with the composite
output that the IIc already has built in.
In fact, I was mistaken, the 3/4 switch is on the "Modulator", which
means it isn't a composite output but rather a RF output using an RCA
connector (as might be expected to plug into the Switch Box).
Realizing my mistake on which carried that ability, I now fully
understand why Apple included it since it in fact is NOT the same output
as already on the IIc.
-chris
<http://www.mythtech.net>
There is a nice set of H960 racks up on eBay, about to close in the next
hour or so:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3417760448&category=11831
No, I don't have anything to do with this except that I hate to think what
will happen to them if no one picks them up. I would love to have them, but
NJ isn't in my neck of the woods. If someone was willing to pick them up
for me and store them until I could drive out, that would be great!
These cabinets don't become available very often and this set appears to have
the side panels, which can be hard to find all by themselves.
--tom
If nobody's mentioned these:
#1: Check the power supply voltages. Filter capacitors tend to dry out and
voltage regulator transistors tend to fail. If the voltages are more than 5%
off I'd do some serious power supply investigation. If the output voltages
are low, don't try boosting them up by turning up the adjustment knob!
There's probably something more seriously wrong. Turning up the knob is going
to just pass thru more ripple or unregulated voltage.
>No, I don't have anything to do with this except that I hate to think what
>will happen to them if no one picks them up. I would love to have them, but
>NJ isn't in my neck of the woods. If someone was willing to pick them up
>for me and store them until I could drive out, that would be great!
These are actually just about next door to me. However, I don't have much
in the way of storage space left. When would you be looking at picking
them up?
I'm also curious if I know the seller. I have a friend who's company (in
Mahwah) just merged with another and has been unloading a ton of PC
equipment (mostly free). Of course, that doesn't mean much, as Mahwah
where these are, is home to a number of large industrial campuses and
they could be from any one of them.
-chris
<http://www.mythtech.net>
Marlene MacCorkle has a TI-99/4a in the box that she'd like to sell.
She's not asking much. Send your offer to her directly.
Reply-to: <marlene_f_maccorkle(a)yahoo.com>
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
>Hi Peter,
Hi Joe,
{sorry if this is a little muddled - I just got off a 10 hour flight...}
> I picked up a pile (8 of them IIRC) of these things recently.
I've acquired two of them too. One without keyboard or any other
accessories, the other with keybaord and three rather inportant cables...
The first cable is phono to phono, about 6 inches long and connects the rear
panel HP 9000 audio connector to the audio input on the HP 332 chassis.
The second is a 6 inch HPIL to HPIL connector that jumpers the HP 9000 card
keybaord input to an HPIL socket in the rear panel that just connects
through to a front panel HPIL for the front panel hinged keybaord.
The third cable connects the phono video out from the HP 9000 card to the
'VGA' connector on the rear panel (3 row connector 15 pins). Only four of
the pins in the 'VGA' connector are used. I haven't buzzed it through but
the pins used are 1, 5, 11 and 15 only. HP part number is A1300-60036
Without the video jumper cable in place then the display will only show
retrace lines when the brightness is turned right up - so it can be mistaken
for not working.
>They had
>been surplused by a large company and the integrated keyboards were
>missing. So the surplus company that got them threw them out. BUT the KB
>cable runs through the machine then out the back and then plugs back into a
>standard HP-HIL keyboard port. So I'm thinking that I can use a standard
>HP-HIL keyboard.
Absolutely - I have done htis and it works fine. With the correct cable you
can also drive the monochrome display from another computer system
>I've tried one of the machines and I can't get a display
>on it. I haven't had time to check further and I haven't checke dhte
>others.
See my comments above - if you see retrace lines whenq the brightmess is
turned up then it is probably working OK.
>I'm pretty certain that these have an internal hard drive. sorry no
>advice on how to use the touch screen.
If you had a spare hard drive thenI'd be interested. I'm currently booting
my systems off an external harddrive.
>Do you know if an external display can be connected to these? This one
>appears to be running but nothing is displayed on the screen. I think it
>may have a bad screen.
See my previous comments
I'll have a play with the touch screenand see if I can come up with
something.
Cheers
Peter Brown
_________________________________________________________________
Use MSN Messenger to send music and pics to your friends
http://www.msn.co.uk/messenger
Hey!
We have two main problems:
1) The RUN button
The RUN button crashes the CPU. So does a RUN invoked by the end of
Paper-Tape End-Of-Tape.
When I stop the CP and CONTINUE, the processor just goes between FETCH and
EXECUTE states on one single instruction.
I made a 9-step JMP program, which I toggled in. I EXAMINEd 0 and
CONTINUEd from 1 which contained a JMP to 0 which jumped to 7, and from
there it went to 70, 700, 707, 770, 777, to 0.
By holding the CONTINUE button, it ran at least 1000 cycles at max speed.
2) IOT Instructions (Input-Output Transfer)
Just plain don't work.
When I READ-IN a Paper-Tape, The Memory Address increments, starting when
the data does. During this process, Memory Buffer = MA.
When the EOT is reached on the Paper-Tape Reader, RUN is invoked (Which
crashes the CP, see section 1)
These are sure signs of communication going on between the CP and the PTR.
Unless, the EOT has some sort of more direct connection.
Not even the Status lights illuminate. They seem to be wired into the IO
rack (which makes sense as most of what it monitors is I/O equipment..
TTY, PTR, PT-Punch etc.
Any help from any DECies greatly appreciated! I have many spares, and if I
don't have the spare in question, I know many who do.
Regards
Tore S Bekkedal
toresbe(a)ifi.uio.no
+47 91 85 95 08 <GMT+1!
The motor is 50Hz. Yes, you'd think the motor would be 235v, but it seems
not.
The 235-115v converter makes the stand go "DONG" when you plug it in and
makes a loud 50Hz hum.
Who needs a beatbox? Plug the TTY in, put scotch tape on the BREAK key and
you have a 600 BPM drummer ;)
Hi Dwight,
I've been looking for examples/labs that would take me through the correct
procedure to setup/operate a GP-10 analog computer. I found your email in a
discussion about the GP-6 along with links to two labs on how to use it. They
seem pretty good except for a few details that probably apply specifically to
the GP-6.
Thanks,
Matt
Matthew Wadham-Gagnon
McGill University, Montreal
Mechanical Engineering, Honours
I saw that in December of 2002 you had all four Xerox System Disks
for the 630 Memorywriter. Do you still have same? How much?
Bill Morton
5412 South Glendora
Spokane, WA 99223
Hi Dwight,
I've been looking for examples/labs that would take me through the correct
procedure to setup/operate a GP-10 analog computer. I found your email in a
discussion about the GP-6 along with links to two labs on how to use it. They
seem pretty good except for a few details that probably apply specifically to
the GP-6.
Thanks,
Matt
Matthew Wadham-Gagnon
McGill University, Montreal
Mechanical Engineering, Honours
> --- jamesd <jdickens(a)ameritech.net> wrote:
> > Hi new to list... just won a SUN 4/690mp...
> >
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3027472460&category=1121…
>
> Wahoo!
Not quite my reaction after looking at what he got, mine is OUCH! My
advice, ask the seller how much he'll charge you to keep it. Do you realize
how big and HEAVY that stuff is?!?! OTOH, if you did realize what you were
bidding on, congrantulations, you got it for a killer price :^)
What can I say, big Unix boxes for hobbyist use scare me, I'd much rather
have a nice small modernish 2-4 processor Unix workstation.
Zane
Hi, all..
( Gee, I get to ask a legitimate classic comp question.. )
Anyways, I've a A2GS sitting here, that I've been beating myself over
the head with for about two days now.. (Yes, I'm stubborn)
I've been trying to get ADT (serial) working between the GS, and my PC.
I've gotten it to work just fine PC -> GS. (I even had my PC type a
copy of Dos3.3/ADT/ADTgs in via the serial port at 300baud.)
Anyways the stumper is in the GS -> PC direction. Nothing works. I've
tried the modem port on the GS, as well as 2 different super serial
cards.
I finally got desperate enough to pull out a RS-232 break out box, and a
scope. (Plus a couple of dweebie basic programs) What I find is the
Apple serial communications looks like its running at about +/- 4v.
(This is on the builtin modem port. I can't get a SSC to work either.)
(The waveform also appears to have a fair amount of ring on the voltage
swings, but that may be normal)
I'm guessing that the +/-4volts isn't enough for my PC to recognize it.
Question #1:
Does anyone have any thoughts about my theory that the PSU is weak, or
suggestions where else to look?
Question #2:
Presuming question #1 is reasonable, schematics for a GS PSU?
Thanks,
David
Hello Jules,
> ZIF-socketed card ("unknown_04.jpg" on the website): The ZIF socket
> is a 28-pin unit. I'd say it was a programmer, but wouldn't it need
> an external 24V (??) supply if that were true?
Looks like the Vpp generator is on the far right below the multiturn
pot. It will be something like TL497.
> The 40-pin chip is marked as "S6821P", whatever one of those is.
68xx series paralell I/O chip.
> The first 3 of the switches are labelled as '16', the next 3
> as '32' and the last 4 (overlapping by 1 with the previous 3) as '64'.
First three on for 2716, next 3 on for 2732 and the last 4 on for 2764.
> Card with 8 LEDs and 4 empty 16-pin DIL sockets ("unknown_02.jpg" on the
> website): Any ideas?
Looks like a digital I/O card. The 6522s are also paralell I/O chips.
Leads to the outside world would plug into the DIL sockets.
Cheers,
Lee.
________________________________________________________________________
This e-mail has been scanned for all viruses by Star Internet. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________
I just aquired (won on ebay, totally forgot I bid on it), a pretty neat
little Apple item I never knew existed.
Its an RGB -> NTSC modulator for the Apple IIc. It also came with a
game/TV switch box, but I don't know if that was originally part of the
package, or just a seperate item that was included in the auction.
I've never seen this little device before, and had no idea it existed.
There doesn't seem to be too much about it online.
Has anyone else ever seen or used one of these? I'm just curous really as
there isn't much to know or learn about it. It looks like it will only
fit the IIc (it has a big lump on it that prevents it from installing on
anything else without a cable). And the device is pretty self explanitory
in how it works.
I was able to figure out from the part numbers and a little searching
that I believe this is the NTSC version. There is also a PAL version (any
others?).
This one appears to be almost brand new. There is zero discoloration and
other than slight scratches from screws on the leads to the TV/Game
switch box, there is no marring at all.
-chris
<http://www.mythtech.net>
I have come across what seems to be a remote outlet/power sequencer device
>from the Systems Enhancement Corporation called the Power Administrator 800.
On the rear it has two DB-9 male ports, which I assume can be used to program
this device. It also has an Ethernet port and a few RJ-11 ports labeled "IN",
"R1," and "R2." Additionally, a DB-15f port with the label "out" exists. I
have tried to connect to the device using 9600/8/N/1 over the two serial ports
(DB-9) using both a straight and null-modem cable, but my terminal emulator
senses nothing. A bank of 8 dip switches exists with the label "config." I
contacted the manufacturer, but they claim all of this information is archived
and they do not have access to it. Does anyone have any ideas on how to
communicate with this device? It powers on and supplies electricity to its
six receptacles.
Thanks,
Geoff
Hi
I find it hard to believe that he'll come up with
1/2 mil to pay for this if he is willing to write poetry
for $1. Other than the fact that the seller has a
reasonable record, the sale sure seems funny.
Most other auctions that sell high value items require
the buyers to post a bond. It doesn't sound like this
guy could post a parking ticket bond.
Still, if this was truly one of the original prototypes,
it is in some sense priceless. I don't know if the reason
given for removing the transmitter is valid. My undestanding
was that the circuit was quite simple and didn't require
significant secret circuits. It would be more likely that,
like our own NASA, even prototype items were often used
in real missions to save cost.
Dwight
>From: "Frank McConnell" <fmc(a)reanimators.org>
>
>Ethan Dicks <erd_6502(a)yahoo.com> wrote:
>> --- Kevin Handy <kth(a)srv.net> wrote:
>> > Ethan Dicks wrote:
>>
>> > The current bid is $500,700 (way above the buy-it-now price it
>> > originally had), so your bid of 25K is far short of the goal.
>>
>> Holy Sh*t, Batman! It was $25K the last time I looked (4 bids or
>> so).
>>
>> That is beyond absurd.
>
>The current high bidder, urban-motion, has another auction up with
>this in the description:
>
> I am a 27 year old father with a newborn daughter and bills to
> pay. I work one full time and one part time job totalling 40-60
> hours a week and I love to write in my spare time. To help
> supplement our income I sell a variety of things on Ebay and look
> for creative ways to honestly make a buck. So, I thought that I
> could write original poetry for you and also increase your
> feedback rating at the same time. By purchasing this auction, I
> will write you an original poem and leave you wonderful positive
> feedback.
>
> The poem will be completely 100% original and will be emailed to
> you within 24 hours of payment. Feedback will be left as soon as I
> receive payment.
>
> Payment is accepted through paypal only using any major credit
> card.
>
> Thanks for looking and god bless!!!!!
>
>I am not making this up, you can see it yourself at:
>
><http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2932949148>
>
>-Frank McConnell
I already have copies of those, and IIRC, they don't have any specs on the
control 'messages' passed between things, a PROM dump, or anything else
that is helpful for figuring out how to send commands to the drive.
---
Sounds like Tony has figured this out already to build the test box.
Would you be willing to publish the info that you've figured out, Tony?
---
Ethan Dicks <erd_6502(a)yahoo.com> wrote:
> --- Kevin Handy <kth(a)srv.net> wrote:
> > Ethan Dicks wrote:
>
> > The current bid is $500,700 (way above the buy-it-now price it
> > originally had), so your bid of 25K is far short of the goal.
>
> Holy Sh*t, Batman! It was $25K the last time I looked (4 bids or
> so).
>
> That is beyond absurd.
The current high bidder, urban-motion, has another auction up with
this in the description:
I am a 27 year old father with a newborn daughter and bills to
pay. I work one full time and one part time job totalling 40-60
hours a week and I love to write in my spare time. To help
supplement our income I sell a variety of things on Ebay and look
for creative ways to honestly make a buck. So, I thought that I
could write original poetry for you and also increase your
feedback rating at the same time. By purchasing this auction, I
will write you an original poem and leave you wonderful positive
feedback.
The poem will be completely 100% original and will be emailed to
you within 24 hours of payment. Feedback will be left as soon as I
receive payment.
Payment is accepted through paypal only using any major credit
card.
Thanks for looking and god bless!!!!!
I am not making this up, you can see it yourself at:
<http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2932949148>
-Frank McConnell
On Jun 4, 11:43, Ethan Dicks wrote:
> According to the specs I read, there's different insertion forces
> for different models of pins - spring tension in the pin body itself.
So there are -- three different ones in fact, though only on one
series, mainly to accomodate large differences in the number of
contacts per housing, as you said. Despite using the catalogue from
time to time, I'd not appreciated that before.
--
Pete Peter Turnbull
Network Manager
University of York
On Jun 4, 6:23, Ethan Dicks wrote:
> --- Peter Turnbull <pete(a)dunnington.u-net.com> wrote:
> > Most of the cables I've seen on these were made up using 2x5-way
Berg
> > connectors and individual Bergcon crimp pins.
>
> AFAIK, the connectors for a DLV11-J are 2x7-way... There are only
nine
> pins (one is missing for keying), but the extra bits help you center
> the connector. 2x5 will work, if you don't miss.
No, the DEC spec says 2x5. The connectors are AMP connectors; the ones
on the DLV11-J itself are 87272-8 and the ones on a BC21B cable (for
example) are 87133-5. You can fit a Bergcon 2x7 if you push hard, but
it distorts the shroud slightly. All the cables I've ever seen,
including original DEC, are 2x5 housings. If the key is in place, you
can't really miss.
> > You can still get them, but the pins are horrendously expensive in
small
> > quantities.
>
> No kidding. One other "problem" is that you need to stock one set of
> pins for small connectors (like the DLV11-J) and another set of pins
> for large connectors (like an RL8A - 40 pins) because there are
different
> mating forces. Yes, you can use the "wrong" pins, but they were
spec'ed
> different for a reason. "Weak" pins in a small connector might not
> grab enough to stay in well enough, and "strong" pins in a large
connector
> might be too difficult to insert.
Well, that's not "weak" and "strong" by design, it's for different
sizes of square pins, or for round pins. Yes, I agree, don't use the
wrong ones!
--
Pete Peter Turnbull
Network Manager
University of York
On Jun 3, 10:56, John A. Dundas III wrote:
> Stuart,
>
> At 11:53 PM -0700 6/2/03, Jochen Kunz wrote:
> >On 2003.06.03 02:16 Stuart Johnson wrote:
> >
> >> Does anyone have a couple (2) of the AMP 10 pin connectors (with
> >> unused pins) used with the DLV-11J 4 port serial I/O boards or
> >> know where I could purchase them?
> >Aren't this very common 10 pin IDC connectors? At least on my
DLV-11J
> >clone from Sigma Systems. I used the usual 10 pin crimp connectors
for
> >ribbon cable to make the cables.
>
> I have a -J that I'd like to make work and I don't have cables
either. I
> might get a chance to try Jochen's suggestion this weekend, but not
before.
> If you find a solution, please post.
Most of the cables I've seen on these were made up using 2x5-way Berg
connectors and individual Bergcon crimp pins. You can still get them,
but the pins are horrendously expensive in small quantities. However,
lots of other manufacturers now make similar conectors (two rows, on a
0.1" pitch (2.54mm not 2.5mm)). I've used ones made by Molex (C-Grid
III 90142 series, cut off the polarising lug) and Harwin (M20-1071000).
Those numbers are from a quick glance at a catalogue so check them
before you buy a whole lot! Tyco/Amp make something similar, 87456-6
is a 2x5 way housing with various gold-plated or tinned crimp pins to
fit.
I get mine from Farnell in the UK, but I'm sure you'd be able to get
something from any of the usual US suppliers.
BTW, if you make up your own DLV11-J cables, don't forget the shorting
link or it won't work reliably (if at all)!
--
Pete Peter Turnbull
Network Manager
University of York
Tony Duell wrote:
>That was one of the 'problems in the Teletype' that I was thinking of. I
>suspsect the easiest kludge for this these days is to fiddle with the
>clock at the computer interface end, and run the whole thing at 91.667 baud
>
>-tony
91 baud! That is way too slow. I could live with 110 baud, but not 91 baud.
My Selectric terminal used a speedy 134.5 baud.
Michael Holley
www.swtpc.com/mholley
Hi all,
I'm new here - so I hope I'm not breaching any etiquette by posting
this. I have a couple of new boxed ribbons for the following printer list...
Binder 1550, 8510, 8510A
C.Itoh 1550, 8510, 8510A, Prowriter 7500
DEC CLA 45-14602, LA50
HP 85
Leading Edge Prowriter 2-1550 8150AP
NCR 6411
NEC PC 8023A/B/C
Toshiba P1150, PA7251, PA7252
These are FREE (via an SAE to the UK). If you have any of the above
equipment and are interested, please email me directly at elec37(a)york.ac.uk.
Cheers now,
Ben
~~~
Computer Recycling Project
University of York, UK
www.comprec.org.uk
Hi All,
I have an old 9000 R332 (rackmount 300 series machine with built in
monitor).
It looks as though the display has an array of LED's and photo diodes for a
touch screen setup.
How do I get the touch screen to work?
Do I need some additional sofware to do this?
Cheers
Peter
_________________________________________________________________
Sign-up for a FREE BT Broadband connection today!
http://www.msn.co.uk/specials/btbroadband
Long time readers may recall that about once a year I beg other list
members to see if they have the manual for the Pro-Log M822 8080
analyzer - that quest continues. But I am now the proud owner of a
Pro-Log M824 Z80 analyzer that I snatched up for $15 off ebay. Of
course there was no manual. But now - theoretically - I can add
blinken-lights to both my Sol-20 and my NorthStar Horizon and
single-step to my heart's delight.
So...... are there any list members with the manual / schematic for
EITHER the M822 OR the M824 ????
Bob Stek
Saver of Lost Sols
Anybody want to offer advice on reforming filter
caps? I'm planning to power up some stuff that
hasn't seen voltage in a long time. My plan is
to put several low-wattage light-bulbs in series
with the thing, to limit the amount of current it
will get, and hopefully allow those old caps
to reform instead of, say, exploding in my face.
It would be better to put the light bulbs (or
whatever kind of resistor) in series with the
caps themselves on the secondary side of the
transformer, right? But if I start digging into
the thing's innards like that, there is a real
risk that I'll damage it more than an exploding
cap would. (In one item, there is a picture
tube nearby, and I'm sometimes clumsy...)
Now the questions:
Could putting the light-bulbs (or whatever) in
series on the primary side of the transformer
actually produce the desired effect? IIRC, a
step-down transformer divides the voltage but
multiplies the current. So I'd have to limit the
current on the primary side that much more to
keep the secondary current down, right?
Also, what kinds of things could be damaged by
getting less voltage than they were designed for?
I could imagine hard disks spinning too little to
lift the heads from the surface, for instance.
(This is moot, because there are no hard disks
in any of the equipment I'm looking at.) How
about CRT's? Could too little deflection make
the beam hit something it shouldn't? Anything
else?
Thanks,
Bill.
In an effort to track something down, both cctech and cctalk have
temporarily been put into "all posts must be approved". The net effect is
that traffic on the list will be more "bursty" for a while, as I
periodically check posts and manually approve them all. This change is
temporarily, hopefully no more than a few hours. Everything should be back
to automatic approval by late tonight. Sorry for the inconvenience!
(The approval change for the next few hours, only applies to posts that
normally would NOT need to be approved).
Regards,
Jay West
Hi Folks,
I have to do some reverse-engineering work on an old Z80 based system.
Does anyone know where to find A 64650A GP Preprocessor pod
and a 64853A Z80 personality module
gr.
Luc
Go to David Gesswein's site
http://www.pdp8.net/query_docs/query_all.html
and look under "Teletype", download the "Print Sets which have
full schematics of your 33, and all will be revealed!
As you have discovered, parts of the TTY power supply are on all
the time even if the line/local switch is off...
Mine runs quite hot too, and over the years has discolored the
board beneath it to a well-done dark brown.
-Charles
On Tue, 03 Jun 2003 12:00:01 -0500, you wrote:
>This res. gets hot even when switched off, but just in the socket.
> ____________
> | |
> | (14 O ) | <- large resistor
> | |
> | (220ko)| <\
> | (300ko)| |
> | | |- not sure
> | etc (vr) | |
> | | </
> | _ |
> |||||| ||||||
I am searching for a reasonably priced DEC ADQ32-SF. I have only been able to
find one but the company that has it wants way too much for it. If you have
any resources for this I would greatly appreciate any links, phone numbers,
fax numbers or anything else that you feel may help in my search. Thank you
for your time
Vince Harris
Account Manager
US Computer Exchange Inc.
386 East Maple Road
Troy, MI 48083
248-583-9000 Phone
248-583-9009 Fax
vharris(a)usce.org
Justin,
I came about your mail on an archive-server. Did you resolve your
problem
with the keyboard ?
I think you do have a LK401, but not a Digital/Compaq one but one from
Tektronix. Today I got a request from a customer looking for that
Tektronics
keyboard. But I only have DEC Keyboards. DEC LK401 has alway a 4pin RJ11
connector.
I never came across that Tektronics keyboard before and your Mail was
the
only one stating the Tektronics pratnumber, which is different fron the
DEC one. BTW, the serial# is different, too. The DEC ser# is longer. The
TEK
ser# has only 5 digits while DEC ser# have 10 digits.
Sincerely,
Michael
I'm interested in obtaining one of those "Weird" cables you have.
Can you please either contact me at 757-534-7108 or give me your number so
that we can discuss it further to make sure we are talking about the same
weird cable.
Thanks,
Michael Bauza
CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is
for the sole use of the intended recipient(s) and may contain confidential
and privileged information. Any unauthorized review, use, disclosure or
distribution is prohibited. If you are not the intended recipient, please
contact the sender by reply e-mail and destroy all copies of the original
message.
Hello fellow PDP-8 enthusiasts:
Due to financial considerations, I am forced to sell my PDP-8 collection. I
will be putting individual items up on eBay over the next few weeks.
My current collection includes a straight-8 in the original DEC rack
cabinet, an 8/I, two 8/e's (one 'basic' and one a fully loaded 40-slot
box), a TU-56 dual tape drive, high speed paper tape punch and reader,
80-column drum-style Dataproducts line printer with spare ribbons,
documentation, boards, and paper; RX-01 and RX-02 disk drives, two
PDP-8/a's, and two VT-278's on wheeled pedestals, extra VT-100's and
VT-52's, and more that I have probably forgotten about. Software, maindecs,
documentation, etc. will also be offered.
I plan to hold on the straight-8 until the last possible moment, maybe
forever, and I am negotiating the sale of the 8/I processor, its spare
board set, and documentation, to a private party. I even have a couple
of OLD 11's (an 11/05 is one of them).
I have had this collection for close to 20 years. All my kids learned to
use computers on it, and it has been lots of fun restoring them, writing
software, and building custom hardware for them. I'll miss them, but I do
want to see them go to good homes!
If there is anything you want, let me know and I will put it up first. I
have a LOT of stuff related to these machines, so ask, as I may have what
you are looking for!
Best Regards,
Dave Mahoney