Quick FYI for the bench-techs in the group.
A few months back, I became aware of this device, as well as the others
produced by the same fellow:
http://www.voltagestandard.com/DMMCheck_Plus.html
He's producing several types of low-cost, precision voltage / current /
frequency references. Prices are reasonable, especially when you consider
the re-cal program.
Any of these should be more than adequate for the vast majority of our
reference / cal requirements.
(I have no connection to the mfr. But I do like the product, and wanted to
pass it along.)
a loss indeed... Well we have the M2 body and light meter to go on top.
All we just need the lens so if you ever find another please let us know!
Thanks ! Ed#
In a message dated 12/3/2016 8:46:15 P.M. US Mountain Standard Time,
cisin at xenosoft.com writes:
> > (Three other cases had simply disappeared between the time my buddy
> > died and the time that the county let us go through the house.)
On Sat, 3 Dec 2016, COURYHOUSE at aol.com wrote:
> let me know if you have a 90 mm summacron f2(?)
> a nice working one is great! I not good inside but looks ok on
the
> outside let me know... we need it to go on an M2 in a display.
The Summicrons (I know there was a 50mm and a 90mm, but I don't know about
35mm) and the M series bodies, had been in those three cases.
And his two PBM-1000's (Micropro computer) were dumpstered.
Slim chance, but does anyone have a working Chameleon that I could clone the software off of?
They are 40mb MFM drives, I just bought two, and both units are missing the drives, making them
boat anchors. Or, slimmer yet, if someone has the software on floppy
Hello cctalk'ers,
We at the Vintage Computer Federation would like to thank everyone for
making 2016 an incredible year.
Most of you know us by now, but just in case you don't -- we're a
501(c)3 non-profit created a year ago to organize the Vintage Computer
Forum, VCF East, VCF West, and the official VCF Museum (at our NJ
headquarters). Our goals are simple -- to empower collectors and spread
awareness of computer history.
We accomplished great things in 2016. We doubled the size of our museum,
hosted the 11th edition of Vintage Computer Festival East, resurrected
the former Vintage Computer Festival West, and joined forces with the
Vintage Computer Forum.
Now we?re asking for your help to keep the momentum going. Can you make
a tax-deductible gift to us this holiday season? Over at our
contributions page you?ll find four options ? Binary ($10.00), Phreaker
($26.00), 555 Timer ($55.50), S-100 ($100), and Variable (enter your own
amount).
If you?d like to do something truly awesome, and you happen to live in
or will be traveling to the San Francisco / Silicon Valley area, then
bid on lunch with Lee Felsenstein through our friends at CharityBuzz
(https://www.charitybuzz.com/catalog_items/lunch-for-3-with-personal-computi…).
Lee is a technical and social media legend ? he was a spark behind
Community Memory, moderator of the Homebrew Computer Club, and a top
engineer for both the Processor Tech Sol-20 and Osborne-1. Bring a few
friends, have lunch with Lee at your mutual convenience, and we?ll pay
the bill!
Where will your money go? We are planning even more things for 2017 and
beyond. Vintage Computer Festival East XII will be held March 31 through
April 2 at our museum. We are currently planning Vintage Computer
Festival West XII and will announce the dates soon. We?re considering
expansion of the Festival to other cities, we?re looking to incubate
additional regional chapters, we are planning to offer more resources
online, and we?re preparing a slew of improvements to the physical
museum. If you thought we were active this year, then 2017 is going to
exhaust us ? but we love every minute of it!
If you want even your news even more frequent and granular, then you?ve
got options! Read our blog at vcfed.org, join the discussion forum
there, like us at facebook.com/vcfederation, and follow us through
twitter.com/vcfederation.
Finally, if you have questions or comments, then please feel free to
contact me directly.
Thank you,
Evan Koblentz
Director, Vintage Computer Federation
Evan at vcfed.org
Hey all --
Due to a small miracle I now have 8KW of perfectly functioning core in my
long-ill Imlac PDS-1D. The last hurdle is devising a replacement for the
missing display (an X/Y vector display). For the time being I'm going to
attempt to use an oscilloscope, but first I need to build a cable.
The Imlac uses a Winchester connector (14 position) for the display and
while they're not as common these days the parts can still be found so I
thought I was in the clear, but what I failed to notice is that three of
the "pins" (for the X, Y and Blank signals) are actually tiny coaxial
connectors that fit within the Winchester housing (i.e. they're the same
diameter as a Winchester pin).
I haven't been able to track these connectors down anywhere. Anyone have
any ideas?
Failing that, I can always just tap into the backplane to pick up these
signals and ignore the connector on the bulkhead, but it would be nice to
be able to use the original connector...
- Josh
V7.2 of Ersatz-11 is done. New features include:
- Intel gigabit Ethernet driver (ASSIGN XH0: IGBE:).
- FTP server in DOS and stand-alone versions (FTPSERVER START /ACC=users.txt).
- Filename completion with TAB key.
- Stand-alone .ISO file is dual-bootable (copy to CD-R or flash drive).
- Inactivity timeout for Telnet connections.
- Linux full version has DCI1300 driver (for emulating DR11C/DRV11).
Bug fixes and tweaks as always.
As usual, the Demo version can be downloaded from:
http://www.dbit.com/demo.html
Updates have been mailed to commercial users with current subscriptions.
John Wilson
D Bit
Hi,
I have an Intel iUP-201 EPROM programmer which is giving a 'Power Supply Failure' error. I think it is failing a self check for one of the output voltages from one of its uA723 precision regulators, which are set from resistor networks and multi-turn pots.
I have checked all the electrolytic caps and they seem fine, and voltages from the linear power supply look reasonable. I have a user manual but no schematic or service manual, so am a bit in the dark as to where the problem is.
I found a range of similar manuals here:
http://www.intel-vintage.info/inteldevelopmenttools.htm
Please can anyone with further documents for the iUP-201 (or similar iUP-200) please get in touch,
Regards,
John
Intel Development Tools - Intel Vintage<http://www.intel-vintage.info/inteldevelopmenttools.htm>
www.intel-vintage.info
This Site about Intel old staffs like ICs ,Manuals,Tools
-------- Original message --------
From: allison <ajp166 at verizon.net>
Date: 2016-12-02 2:23 PM (GMT-08:00)
To: cctalk at classiccmp.org
Subject: Re: Thinking about acquiring PDP stuff
On 12/02/2016 12:33 PM, Brad H wrote:
> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Rich Alderson
> Sent: Thursday, December 1, 2016 1:34 PM
> To: 'General Discussion: On-Topic and Off-Topic Posts' <cctalk at classiccmp.org>
> Subject: RE: Thinking about acquiring PDP stuff
>
> From: Brad H
> Sent: Thursday, December 01, 2016 8:18 AM
>
>> My Intellec 230 though might give a PDP a run for its money.
> See, I'm trying to get you to stop saying "a PDP".? There's no such thing.
> There are families of PDP-n things, but there are wide differences in size, weight, and capabilities.
>
> Your Intellec 230 would fit inside one memory cabinet of a PDP-10 with room to spare.? The entire PDP-10 system weighs tons.
>
>???????????????????????????????????????????????????????????????? Rich
> Rich Alderson
> Sr. Systems Engineer
> Living Computers: Museum + Labs
> 2245 1st Ave S
>> Seattle, WA 98134
>>
>> http://www.LivingComputers.org/
> Sorry.. I was being lazy.. I should have said 'a PDP 8/E'.? Obviously there are some pretty large PDP-# systems.
>
That's more than lazy!? Just don't!
The PDP-8 and the PDP11 and PDP10 were beating the pants off of Intellec
2xx systems
for years before the first one was made.? Remember Billy Gates used a
PDP10 cross
assembler and simulator to create BASIC.? The market those DEC system
were in
demanded far more performance than the 8080 from 1974 could deliver.
An 8e running WPS was typically a multi-user system.
A PDP-8E running TSS could service 8-16 users in what appeared to them
as real time.
That was the original Boces Lirics system of 1969 a whopping three racks
of PDP-8i
The PDP-8e was a tad faster.? Fast forward to the early 90s and my
Decmate-III with APU
and running OS278 likely make the I230 look poor and it was much
smaller.? FYI the DMIII
is a PDP-8 on a chip (cmos 6120 cpu).? The APU was a z80 at 4mhz with 64K
ram and could
still easily outrun the I230 and gave me the choice to use 0S278 (a
version of OS8),
WPS (word and list processing), and CP/M-80.
A PDP-10 (BOCES LIRICS system 1970!) serviced over 300 users.? A 36bit
monster.
The CPU and the memory was eight 6ft racks long by two rows big not
including the four RP06s.
That system used the old PDP8i to keep it fed (data concentrator).
A PDP-11/23 with a 10MB disk in a single 50inch short cab running TSX or
other time sharing
system usually? supported 4-8 users. It was a 16bit system at that.
They usually fit in the corner.
A Intellect 230 was handily beat by my NS*Horizon system in 1980.
That's allowing for
the fact that the I230 was 8080 powered and ran at 2mhz (2:1 handicap).
I know the
system well as I used it to develop programs for 8048/9, 8085, 8088, and
other micros
of the day till we retired it for a faster box (multibus 8086 at 8mhz in
1981).
So a knowledge of computer history and performance is is something to
>consider.
>Allison
Sorry.. when I said 'beat'.. I meant weight only. ?And only for the main PDP-8e system unit. ?Was not comparing processing speed. ?But I appreciate all the info you gave me there for sure. :)
So I have this memory of a set of law promulgated by an engineer at DEC, one
of which was something to the effect that 'all digital circuits are made out
of analog devices'. However, my memory doesn't recall where I saw this, and my
Google-fu is not strong enough to turn it up. Can anyone help?
Noel
> From: Brad H
> So I wondered what PDP guys did to keep interested and how much they
> actually used the machine over the course of, say, a year.
Well, I have to get all mine running first... ;-) Seriously, though, I'm
looking at several years of work to get them all running. (And there are also
various peripherals to do, like tape drives, etc.)
And then there's the project Dave B and I have to creat new blinkenlitz
panels (not to mention SD-card based mass storage to replace those cranky old
disk drives for every-day running, the original purpose before the
blinkenkraze hit us :-) for the PDP-11's...
Seriously, though, like all hobbies, it's primarily to amuse me, not to
create anything useful. And it's _very_ successful at that.
Noel
