>r. said:
>On Fri, 30 Apr 1999, Huw Davies wrote:
>The NeXTs don't even really have power switches.
Command-command-~ is supposed to bring up a monitor through a non-maskable
interrupt, into which you can enter the command ? for info on available
commands. "halt" saves files to disk and gracefully halts the system. "mon"
goes to the ROM monitor but does not gracefully halt the system.
An emergency shutdown is available by pressing <left alternate>-<left
command>-<numeric keypad *>. (on an ADB keyboard, use the command bar
instead of the left command key). This will not power off the computer but
will do a hard reset of the CPU. This does *not* result in a clean
shutdown, and can damage an optical disk if it's in the middle of a write
operation (so I hope you didn't just do it ;-) ).
- Mark
Ok, I give up, where the heck does one find the pin-out for the weird
not-quite-an-RJ-45 connector that connects the console to the VAX? I've got
a cable that has the weird connetor on it (both ends :-() which no doubt
plugs right into a VTxxx VAX Console Terminal but I'm more interested in
something like a serial port of a PC pretending its a VTxxx console
terminal. I figure I'll cut this cable in half, crimp on an RJ45 that I can
plug into one of those DB-9 hood things.
--Chuck
> On Wed, 5 May 1999, Greg Linder wrote:
<>
<> > installed in. I agree with the cardboard solution- Whenever I mount dri
<> > of any type that I don't have many of I always either cover the bare me
<> > case with contact paper or a piece of carboard or something
<> > non-conductive.
<>
<> A strip of mylar or other thick, durable plastic-like material cut from
<> sheet would probably be even better.
Skip the metal. Don't use it and see how it goes. I have a few in service
that way and they are fine.
Allison
I found some strange looking rack mount boxs in a salvage place today.
They're marked AuudioVision 90. I opened one up and found that it has an
Apple Mac Quadra 950 built into it. I rounded up a monitor (but no
keyboard) and fired one up. It boots to MacOS then asks for a password. Is
there anyway to get around the password other than reinstalling everything?
There are six of them available. Is anyone interested in them? They have a
huge non-apple power supply, and at least one floppy and one hard drive and
all the regular Nu-Bus (?) slots. Another that I opened had two hard drives.
Joe
I disassembled enough of the VAX3800 to get to the TK70 and pulled it out.
The maintenence logs were stuck into the top part of the cabinet behind it
and apparently this TK70 was replaced in August of 1995. It also had the
skid plate attached so it was a simple operation to slip it into the BA123
I've got. The skid plate had a plastic insulator on it between the skid
plate and the drive so it looks like the skid plate has to be insulated on
these drives. I'm guessing that somewhere in the manual it says:
"MUST BE INSULATED, OTHERWISE A SMALL FIRE WILL BREAK OUT
NEAR THE POWER CONNECTOR AND SMELL REALLY WEIRD." :-)
Its running in the uVaxIII now with no worries. After its had a few hours
on it I'll "upgrade" again to the KA655.
On an unrelated note, I've got a couple of KFQSA DSSI controllers now, are
they usable in a Q/Q backplane? Their CD fingers appear to only touch power
and the DMA grant lines (backside of the C connector)
--Chuck
>
> Joe
>
> At 07:17 PM 5/5/99 -0700, you wrote:
> >Re:
> > HP 9000 840S
> >
> >> I have a chance to pick up one of these. Does anyone know anything
> about them?
> >
> >The 9000/840 was HP's first PA-RISC HP 9000. It's the same
> >hardware as the HP 3000/930, and has an 8 MHz clock. They
> >generally shipped with something like 24 MB, IIRC (which wasn't
> >enough).
> >
> >I think you should take it! If not, post here...a couple of us might be
> >interested.
> >
> >SS
> >
>
Joe,
I'm definitely interested:
Can you provide more details?
Is the system complete?
Is the OS installed?
I'm assuming it's in Central Florida?
TIA,
Steve Robertson - <steverob(a)hotoffice.com>
In a message dated 99-05-06 12:32:28 EDT, you write:
> Model number obscured by price tag. Doesn't have a keyboard. Sort of
> looks like a floppy P-box but I noticed it had video and keyboard
> connections on the back.
>
> Any of you folks looking for one of these beasts?
>
isn't that the hated pc-almost-compatible computer?
Hi,
The other day I bought a used Teac FD-55GFR 5.25" 1.2MB floppy drive, in order
to archive various old 5.25" disks.
The drive works, but a whining sound is made when the drive is spinning. This
is caused by the mounting of the plastic spinny thing (not sure of the
technical term :) which sandwiches the disk hub to the motor spindle
vibrating. This is held in place by a C-clip.
Pressing lightly, really just touching the spindle of the plastic part stops
the whining. My drive may be missing its top casing, if there should be one.
Maybe a piece of rubber or something fixed to the top casing presses the
spindle in complete drives? I thought of fixing the whining by using a piece
of sticking plaster. Any better ideas?
Are these drives supposed to have a top casing? In my one I can see the head
assembly and stepper motor moving.
-- Mark
Ok, here's the result:
Anthony Eros is getting 8 machines
LordTyran is getting two more machines which I manage to scrounge up
(there is yet another machine available)
Jason Willgruber is getting a hard drive.
These three people need to e-mail me with their zip codes, and I will tell
them how much money they need to send me. There is one last machine up for
grabs.
--Max Eskin (max82(a)surfree.com)
http://scivault.hypermart.net: Ignorance is Impotence - Knowledge is Power
I ran across three 35-pin, 256 KB, non-parity SIMMs from a
Dell proprietary memory board from 1987. Yes, that's 35--
the numbers are clearly marked on the SIMM.
If anyone wants these, drop me a message, and I'll send
them to you.
Thanks,
Dave
>>>Yep, you got it! [Q/CD all across]
>>
>>Cool, also the wide spacing to allow the metal covers fooled me for a
>>minute, there is only 11 slots in these puppies.
>Let me see if I've a few facts straight here. This is a BA213 you're
>talking about, and this is the same backplane as would be in a DECserver
>550.
Right. Note that there are Skunk Box enclosures where the first
3 or 4 or 6 slots aren't Q-bus at all. Various 4000-xxx series
boxes, in particular.
> Now for the really STUPID question, Q/CD means that all slots are
>full height, like the first 3 or 4 on a BA123.
Again, on the nose!
Tim.
At 10:25 PM 5/5/99 -0700, Sellam Ismail wrote:
>
>Yeah, then I spray-painted it neon pink because I didn't like the original
>color. Core memory is cool.
No way. It wouldn't be Art until you made it into a dress, as a
commentary on the way technology has shaped our lives.
- John
I have an RL01 drive which isn't working correctly. I've opened up the back
end of the drive so I can see what is happening and what I see is this.
1. Drive starts to spin up, but it's obvious by looking at the spindle of
the drive motor, that the motor never reaches full speed.
2. After about 5 seconds, the drive slows some, and the heads attempt to
load.
3. The heads then chatter back and forth. They appear to move in about .25
inches and then retract.
4. This continues until I spin down the drive.
If I pull the pack out, and hold the switches closed manually, the motor
does reach full speed (although the heads never attempt to load).
If anyone has any suggestions as to what might be the problem, I really
apprecite some information.
Thanks,
Bill King
Hi Chuck,
-----Original Message-----
From: Chuck McManis <cmcmanis(a)mcmanis.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Wednesday, May 05, 1999 11:16 AM
Subject: More info RE: KA650 & uVAX
>Very cool, I actually picked up three UVAX38xx's in two of them were KA650
>cpus and in one was a KA655 CPU. All three have been "upgraded" to 32MB of
>third party memory. The "skunk" boxes were fairly trashed by the process of
>sparing them out. I'm guessing that they were part of a cluster.
Lucky day ;-))
> As for peripherals they all have TK70 tape drives, and the > associated
>controller,
starting to get envious ;-))
> one has a board pair M7164/M7165 connected by short cables
>across the top.
M7164/M7165 is the KDA50 SDI controller, not SCSI.
> And there is a drive hiding in one of them. (I've not
>identified it yet) they have what look like SCSI II connectors
> but a person
>suggested they might be DSSI connectors (which I know nothing about).
Could be SCSI, could be DSSI, tell us the type ...
>I'm going to see if I can bring one of the boxes to life, All are missing
>the panel that would have covered the card cage. If not I'll try to enhance
>the speed of my world box bases uVax II.
I would start with the ka655.
Not because she's faster, but the monitor program is better (sometimes the
ka650 have the same, but not always)
cheers & have fun,
emanuel
-From: Sellam Ismail <dastar(a)ncal.verio.com>
>
>Yes, I've got a complete system in my collection with the expansion
>chassis and manuals and such. I can try digging it out to make a copy of
>the relevant manuals and send them to you. Standard disclaimer on time
>applies :)
You are a veratible fount of goodies and generosity. What's in the
expansion chassis?
Thanks
- Mike
>> Flip flop should be easy too. This one looks rather like an ECL logic gate:
>>
>> +V DC
>> |
>> <
>> >
>> <
>> >
>> |
>> +--+--+
>> | |
>> (:) (:)
>> | |
>> A--+ +--B
>> | |
>> > >
>> < <
>> > >
>> < <
>> | |
>> GND GND
>>
>> Pull A to ground. Lefthand neon lights. Voltage on right hand neon too low
to
>> maintain discharge and it goes out. Same works for B - RH neon lights and
>> voltage at the common anode too low to maintain LH neon, which goes out.
>
> Nope! If left is not list then there is no current flow across the
> resistor. To ignite the left lamp a voltage (negative maybe 25V) would
> have to be applied at A. To extinguish left a voltage of +25(or more)
I see what you mean. (Careless of me!) A and B would definitely need pull-ups,
but I think it could work. The initial current when you apply the negative
pulse to one input should drop the voltage at the common anode sufficiently to
extinguish the other neon.
> volts would have to be applied. Generally this kind of logic is pulse
> coupled using transformers or capacitors. Note a bistable was done in the
> case mentioned with one Neon.
>
> Doing ascii logic from telnet seesion is far to slow for me to give a
> complete circuit.
Don't post a circuit yet - I want to think about the one-neon flipflop.
Theoretically possible, anyway - the two states are on and off (now why does
that sound vacuous?).
Philip.
Is this really off topic? It's really interesting anyway.
> Simple oscillator using NE-2:
>
> 90 VDC
> |
> >
> < 470K
> >
> <
> |
> +------+
> | |
> (:)NE2 _
> | - .1 uF 100V
> | |
> +------+
> |
> GND
Hmm. The capacitor charges through the resistor until the neon strikes. Since
the neon now draws more current than comes through the resistor, the capacitor
discharges through the neon until the neon extinguishes. Process repeats.
Neat. I suppose that if the resistor is too small, the neon doesn't extinguish,
but the capacitor merely discharges until it reaches the steady state voltage of
the neon at the current through the resistor.
I like it!
Flip flop should be easy too. This one looks rather like an ECL logic gate:
+V DC
|
<
>
<
>
|
+--+--+
| |
(:) (:)
| |
A--+ +--B
| |
> >
< <
> >
< <
| |
GND GND
Pull A to ground. Lefthand neon lights. Voltage on right hand neon too low to
maintain discharge and it goes out. Same works for B - RH neon lights and
voltage at the common anode too low to maintain LH neon, which goes out.
Don't know the component values though.
Outputs are also A and B. You may need pull-up resistors on them, depending on
what you're driving.
Fun.
Keep neons in light-tight containers, though! Are there circuits in which
optically coupled neons are useful?
Philip.
Hi all,
I would like to connect a Plessey disk drive to a PDP11 RK11-D controller.
The drive has a fixed platter and a removable platter, compatible to RK05 I
believe, and these numbers on it:
Plessey 3468-0231
PMDD/11B
700540-200217D
It has a 42 pin MRA 42 S mating connector, and same with a terminator. I
believe the 42 pin should be a Drive Bus, to be connected with standard
Unibus cable to controller slot 2A/2B.
Question: Would anyone have a maintenance manual for the Plessey drive
available ? Short of that, maybe the pinout of the connector, so that I can
make the cable ?
Of course, reverse engineering of the disk electronics should reveal the
pinout/RK11 compatibility, but having the docs just would save a lot of work
and be more reassuring !
Thanks and regards
John G. Zabolitzky
Ok, this one is puzzling me.
Everyone said "you need new memory for the KA650." Why?
The connectors appear to be identical, although the 650 supports ECC memory
(but does it require it?) Enquiring minds want to know!
--Chuck
>> Is it possible to make a bootable floppy for a VAXStation 2000 or is the
>> system too large for the disk?
>
>Of what? VMS? the answer is yes, sorta. Standalone backup is one case
>where it fits on a RX33 (1.2mb 5.25).
Maybe 10 years ago it fit on a single RX33. For a recent version
of VMS it is more like 3 RX33's.
Tim.
> Last time I said I beat up some PCs, many of you were disturbed. So this
> time, I'm warning you before I do it. There are 8 DEC LPv+ 425dx and
> 433dx machines. They are all 486 DX with RAM from 0 to 16 MB, some have
> hard drives around 200 MB, some should have OS/2. They are being thrown
> away because they have miscellaneous problems, and we haven't been able
> to fix them. I haven't tried, so I don't know what the problems are.
> Anyway, first come, first served. Price is 1.2 * shipping.
Memories from 0 to 16MB? If there are any 4MB, 30pin parity simms in that lot,
I'll happily pay 120% of shipping for a set of four.
Philip.
People looking for MMJ connectors / adapters contact me off list. I have a
fair stock of adapters and the crimpers with a few ends.
Dan
>> Ok, I give up, where the heck does one find the pin-out for the weird
>> not-quite-an-RJ-45 connector that connects the console to the VAX? I've
got
>> a cable that has the weird connetor on it (both ends :-() which no doubt
>> plugs right into a VTxxx VAX Console Terminal but I'm more interested in
>> something like a serial port of a PC pretending its a VTxxx console
>> terminal. I figure I'll cut this cable in half, crimp on an RJ45 that I
can
>> plug into one of those DB-9 hood things.
>>
>>
>> --Chuck
>>
>>
>>
>
>I've got a cable with an MMJ on one end and a broken MMJ on the other
>and I'm looking for a serial connector with MMJ's on both.
>
>Wanna swap 'em?
>
>Bill
>
>---
> bpechter@shell.monmouth.com|pechter@pechter.dyndns.org
> Three things never anger: First, the one who runs your DEC,
> The one who does Field Service and the one who signs your check.
>
