For anyone that may be interested, a posting just came up on
comp.sys.dec.micro offering (free) a VAX11/785. No location
specified.
Did'nt copy over his text as im not sure if its 'kosher' to do
so without posters permission.
Good luck,
Nick
Still trying to empty free-up space in my "ware"house.
If you would like an HP-IB cable or the tilt/swivel base for the original
IBM PC monitor, please send your mailing address to me in a private message.
First come first served. I'll confirm things with you and tell you the
shipping costs.
Also have a complete copy of PC Tools Version 6 for US$8 plus shipping, and
something called Software Carousel (1987) for US$5 plus shipping.
Please send a private message to me if you are interested.
Yours in good faith.
Kevin Stumpf - The Nostalgic Technophile
www.unusual.on.ca - 519.744.2900 EST/EDT (GMT - 5)
Author & Publisher of The Guide to Collecting Computers and Computer
Collectibles:
History, Practice, and Technique
there is a dissassembly of the boot rom for the 990/4 up at
www.spies.com/aek/orphan.html now, along with one for the 990/12.
If you have a way to dump the boot proms, it would be interesting
to see how similar they were.
If you have a way to take pictures of the boards, I'd be curious
to see what the I/O cards look like, esp the floppy controller
board.
> ----- Original Message -----
> From: Dan Kolb <daniel.kolb(a)corpus-christi.oxford.ac.uk>
> To: <port-vax(a)netbsd.org>
> Sent: Tuesday, 22 February 2000 5:20
> Subject: Re: How many Vaxes?
>
> > On a semi-related note, what sort of Vaxen do people on this list
My list of personal VAXen:
1 MicroVAX-II in BA-123 w/9MB & RD54 (154MB), TQK50 and TU80 (Dilog
controller), SRC COMBOARD-Q, DZV-11, uninstalled KDA50, running VMS 6.1
1 MicroVAX-II in BA-23 w/9MB & RD54, KDA50, DZV-11 and DEQNA, running VMS 5.5
1 MicroVAX-I in BA-23 w/4Mb & RD52, DZV-11 running MicroVMS 4.2
1 MicroVAX-I parts machine
1 VAX 8300 w/16Mb & RA81 (450Mb), 3rd party SDI-to-ESDI bridge w/two 1.2GB
ESDI disks, KDB50, unresponsive DEBNT (cable problems?) running VMS 5.5
1 MicroVAX 2000 w/10Mb? & RD54, DHT32 8-port expander, TK50Z-FA
1 MicroVAX 2000 untested w/external RD54 box
3 VAXstation 2000 untested w/mice, keyboards, mono monitors.
1 VAX-11/750 w/8Mb & RA81 w/DMF-32, Massbus interface (TU78 is 220V and was
not moved with CPU), SI9900 disk interface w/Fuji 160Mb+Eagle disks,
multiple Emulex 16-port serial cards, UDA-50, 56K DEC sync card for DDCMP,
RUX50 interface, TU80 interface, LP11 interface, s/n BT000354, running VMS
4.5
1 VAX-11/750 w/14Mb, multiple DZ-11, TS-11 controller, Massbus controller,
SI 9900 controller, Fuji Eagles and RM03s not moved with CPU due to
transportation problems.
1 VAX-11/730 w/5Mb & RB80 (121Mb), DMF-32, VMS 5.4
With all of that, only one MicroVAX-II, one MicroVAX 2000 and the VAX 8300
have been powered on in the past year. The Unibus VAXen are in deep storage.
On the way is a VAXstation 3100-90 w/64MB and 1.5GB disk, TLZ30 and TK50Z-GA,
but no ETA as of yet. :-(
-ethan
=====
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Hi,
Once again demonstrating my vast quantities of ignorance...
I need a diode which completely blocks current in one direction
and presents as little resistance in the other direction
as possible. I bought a fist full of little glass ones at
Radio Shack for 50 cents. On my Ohm meter, they show no
conductance in one direction and 1400KOhm the other way.
What do I need to get? RS (which is the only resource I
have available, I need them like _NOW_) has many different
kinds of diodes, ranging up to two dollars per pair.
Thanks,
Bill Sudbrink
Today's acqisition here is a TI DS990 Model 1 Intelligent Terminal.
This designation appears to be a complete misnomer as it is in fact a
full
microcomputer. The case appears to be laid up in fiberglass from the
same
mold as a TI 820 KSR, and the logic bus has 86 pins, which I recall
>from other terminals of the late '70s, but it has a 3 Mhz TMS9900
processor
(nice BIG white ceramic JDL part with gold pins), 64K of ram (4116's,
plus parity),
a TMS9900 based I/O controller board, 2 asych serial cards, floppy disk
controller, and a VDU controller. Going by the configuration table on
the back
of the case there were other options available as well, including
"GPH",
which I am wondering whether might be some sort of bit-mapped graphics
display. The backplane has a total of 12 slots, 7 occupied. There are
what
appear to be 3 serial connectors on the back of the case, but they do
not
connect directly to the serial cards. They go through the bus
apparently.
I've never had my hands on an 820, but I don't think they're this
elaborate,
and the 911 VDT's I have certainly aren't. Nice hefty modular 200W
linear
power supply with its own bus, too. This particular unit has seen some
rough
handling at some point, and is missing a few keycaps, but it is clean,
and
powers up. There's a nice raster on the screen, but no cursor.
Apparently
it must boot off a disk. There's a 25 pin connector on the back of the
case
which must be for a cable to a FD800/1000 dual 8" drive (which I don't
have
yet). The "IDLE" and "EXEC" lights on what amounts to a minimal front
panel on the keyboard light up, but that's it. No "ERR", anyway.
Somebody
please correct me if I'm wrong, so I can track down the problem.
In actual use, from what I was told, it was probably hooked up by modem
to
Tymshare, the predecessor of Tymnet, and thence to a central facility.
It has
lttle bezels on the front shoulders of the case that identify it as a
Tymshare
Travel Business System BS2000. As an aside, I did a little searching,
and
apparently MCI/Worldcom is still running Tymnet, now on rackmount
Sparc-based nodes rather than the earlier PDP-10's.and M68K's (I
preferred Telenet for X.25; they were always a year or two ahead on
dial-in speeds where I was.)
Anyway, if anyone has manuals or software, in particular a bootable
system
disk, for this machine, I'm all ears. Likewise, if anyone has any
questions
about it, I'll do my best to answer them.
jbdigriz
--
----------------------------------------------------------------
DragonsWeb Labs - Custom R&D, Software, & Hardware
----------------------------------------------------------------
Tagline for Tuesday, February 22, 2000
If rabbits feet are so lucky, what happened to the rabbit?
----------------------------------------------------------------
James B. DiGriz - jbdigriz(a)dragonsweb.org - (912) 653-5139
----------------------------------------------------------------
Hi All
I just made a mistake in sending to the group. I only meant
to send to Bill. As it turns out, ther was no issue. Bill
had borrowed the picture. I hope no one takes it against
hxho(a)pacbell.net. He only loaned the picture and I was
just checking the double match.
Please forgive me
Dwight
Actually, germanium diodes, e.g. 1N43A, 1N270, etc, have a forward voltage
on the order of 0.32 volts. There are numerous SCHOTTKY diodes with
considerably lower forward voltage. Check the DigiKey catalog for possible
candidates. Their catalog lists forward voltage as a characteristic.
Dick
-----Original Message-----
From: Jack Noble <apple(a)cmc.net>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Tuesday, February 22, 2000 3:39 PM
Subject: Re: Diode help... HELP!
>Germanium diodes have the least amount of voltage drop while conducting
>(about .06 volts I think) and a popular one that should be readily
available
>is the 1N34 or 1N34A. The reason that diodes seem to act funny on an
>ohmmeter is because of the fwd voltage drop while conducting. The silicon
>diodes that you probably got at radio shack have a fwd drop of more than .5
>volts and will appear as a high resistance to your meter even though they
>are conducting. Hope this helps
>
>Noble
>-----Original Message-----
>From: Bill Sudbrink <bill(a)chipware.com>
>To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
>Date: Tuesday, February 22, 2000 1:44 PM
>Subject: Diode help... HELP!
>
>
>>Hi,
>>
>>Once again demonstrating my vast quantities of ignorance...
>>I need a diode which completely blocks current in one direction
>>and presents as little resistance in the other direction
>>as possible. I bought a fist full of little glass ones at
>>Radio Shack for 50 cents. On my Ohm meter, they show no
>>conductance in one direction and 1400KOhm the other way.
>>What do I need to get? RS (which is the only resource I
>>have available, I need them like _NOW_) has many different
>>kinds of diodes, ranging up to two dollars per pair.
>>
>>Thanks,
>>Bill Sudbrink
>
Hello to all,
I'm still looking for information for these items:
Firstly, an Infotron IF/65 Development System II. It appears to connect via
RS-232 to a dumb terminal for its output of such things as address and data,
and perhaps input of some parameters such as uP clock rate; baud rate is
selectable from a thumbwheel. This system also appears to have the
capability of single stepping the program contained in the device in the
ZIF. It has a 28 pin ZIF socket for the targets EPROM/PROM/ROM. There is a
standard ribbon cable that connects to a pod, and the pod has a braided
ribbon cable that terminates at a 40 pin dip header, most likely to attach
to the target in place of the uP. Trap conditions are selectable via four 0
to F thumbwheels, and conditions to be triggered on can be selected as
memory data read, memory data written, and/or op-code. Any information would
be greatly appreciated, a source of a manual or instructions for use would
be fantastic. This equipment can be viewed at
http://www.wpic.com/whdawson/Pics/infotron.gif
and secondly:
A CUBIT EPROM programming board for the AIM-65. It is not an RM65 board,
the connector will plug right onto the expansion connector on an AIM, but
can also be attached with an appropriate 1-to-1 ribbon cable. Here is the
description:
Measures 4-7/16 (4.4375)inches wide by 6-1/2 (6.5) inches long, including
edge connector, lengthwise insertion.
44 pin gold plated edge connector with a 44 pin socket mounted immediately
behind and parallel to the edge connector, on the component side of the PCB.
24 pin ZIF connector in the upper LH corner, viewing with the edge connector
facing me (all descriptions below assume this position).
10 position DIP switch immediately to the right of the ZIF socket (no
labeling), and another 10 position dip switch about halfway up the RHS,
labeled 1 to 7 and B, C, D (probably address selection since one row of pins
is all tied common and most of the pins on the other side of it go to a
74LS154).
One LED, immediately to the right of the first 10 position DIP switch
mentioned above, at the edge of the board.
Two trimpots about center of the far edge of the board, to the right of the
LED.
Two jumper blocks, one with 2 pins, labeled W1, and one with 3 pins, labeled
RO and RA.
Two Toshiba 24 pin TMM2016P-1 RAMs left of center in second row of DIPs on
the board.
One 2516-45 EPROM to the left of the RAMS, with a label on top "6517A".
On the solder side the only markings (in etch) are CUBIT INC, 1981 and the
numbers 10362 and 6583.
Most of the date codes on the ICs are between 8037 and 8203. There is no
other model number, manufacturer, or other ID marking on this board.
This programmer can be viewed at http://www.wpic.com/whdawson/Pics/cubit.jpg
Thanks,
Bill
whdawson(a)mlynk.com