Re: DMMCheck (Now a word from a non-sponsor)

[Curious Marc]

Thanks! This was very useful to me. 

Marc

 

From: cctalk  on behalf of "drlegendre ." 

Reply-To: "cctalk@classiccmp.org" 
Date: Friday, December 2, 2016 at 11:54 PM
To: "cctalk@classiccmp.org" 
Subject: DMMCheck (Now a word from a non-sponsor)

 

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.)

 

Re: HP1631D Logic Analyzer..Software???

[Tony Duell]

> This page says the 82176A cartridges are extremely reliable and they
> have been able to read every tape they have come accross:
> http://www.hpmuseum.net/display_item.php?hw=676


I have had them fail, but so far not in a way that makes them unreadable.
The main problem is the pressure pad (foam-backed felt) which fails
in the obvious way. A bit of felt stuck to double-sided foam tape will work
for long enough to read the tape.

Once the splice between the leader tape and the magnetic tape failed. It
can be repaired using the splicing block for Compact Cassettes, the tape
is the same width.

The oddest failure I had was when the mirror that reflects IR for the BOT/EOT
sensor lost its reflective coating. The easiest way I found to cure that was
to reassemble the cassette upside-down having cut an extra notch in the
back edge and filled in the that was already there so the cassette would go
into the drive that way up.

-tony

Re: Intel C1101A

[dwight]

I'm not sure I know how to decode Intel's date codes.

I was looking at some of the old parts I got from a friend that

was proto types from the lab.

I have a C8008-1 with F5000, a 31013 with 0587 and

a 1101 with 776.

I know the 31013 couldn't have been 1987 because

neither he nor I were working for Intel by then.

Dwight


From: cctalk  on behalf of Brad H 

Sent: Saturday, December 3, 2016 12:51:35 PM
To: 'General Discussion: On-Topic and Off-Topic Posts'
Subject: Intel C1101A

Putting this out there for those hopefully in the know.



I have been acquiring date-correct ICs and parts for my Mark-8 project,
which is years down the line.  I'm planning to build it on very carefully
replicated clone boards, based off my originals.  For my purposes, I'm
trying to keep ICs early 1975 or earlier.



Most Mark-8s that I've seen have P1101a plastic encapsulated RAMs.  Most are
Intel brand, but I've seen some that I think might be National or
something.. they just say P1101A on top.



The only source other than ebay that I have are those big chip vendors like
Summit.  And the problem with them is they aren't always precise about date
codes.  The P1101A, because they were produced for years, have a wide range
of codes and the places I prospected them from couldn't guarantee 75 or
prior.



To my surprise, I found a few places had C1101A.  They are white ceramic,
gold legs.  They have a 'batch code' of F1268.   I got 16 of them for $14
each.  I was going to get 32, but Summit also surprised me with 5 1973
vintage Signetics n8263s @ $25 each.  I hadn't been able to find any
pre-1980 so I snatched those.. but that put me beyond a budget where I could
buy 32.  I figured I'd buy 16 chips for now and then buy another 16 the next
month.



Now of course, the chip houses have turned tables on me.  They want $48 per
chip instead of $14 like last time.  And checking around, that seems to be
uniform.  Now, I'm not averse to paying that, though it will sting.  But I
want to make sure my assumptions are correct.. that these white vintage ICs
are in fact pre-76.  Can anyone confirm that?  The info out there is a
little vague.



And would it be totally out of place for C1101as to be on a Mark-8?  Could a
hobbyist have had a source for them, beyond having some lying around?

Re: Black anti-static foam corrosion

[COURYHOUSE]

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,  
ci...@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, couryho...@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.

Re: Black anti-static foam corrosion

[Fred Cisin]

> (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, couryho...@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.

Re: Black anti-static foam corrosion

[COURYHOUSE]

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.
 
Ed#  _www.smecc.org_ (http://www.smecc.org)  
 
 
 
 
In a message dated 12/3/2016 8:24:48 P.M. US Mountain Standard Time,  
ci...@xenosoft.com writes:

On Sat,  3 Dec 2016, drlegendre . wrote:
> Interesting find, thanks for posting  this. I've seen this as well. with a
> batch of old ICs which had been  stored (in black foam) for some 20-30
> years. The leads kind of just  stayed behind in the foam..
> My assumption was that the foam was simply  hygroscopic, and held enough
> atmospheric moisture & pollutants to  foster corrosion.

There are numerous black foam formulations.

I  inherited some lenses (including a Leitz Tele-Elmarit 180mm (<250 made)) 
 
that had been stored for a few decades in an essentially airtight case  
with black foam.  When I first opened the case, it seemed as though  there 
was liquid in the case, with an intense vinegar? smell.  Second  time that 
I opened the case, a few hours later, it was dry and crumbly,  and the 
outer painted surfaces of the lenses were badly pitted and had to  scrape 
bits of the foam off, but NOT at all like water damage.  It  turned that 
lens from mint condition and a major rarity, into usable but  POOR cosmetic 
condition (a loss of more than a thousand dollars in  value!).
(Three other cases had simply disappeared between the time my  buddy died 
and the time that the county let us go through the  house.)

Re: Black anti-static foam corrosion

[Fred Cisin]

On Sat, 3 Dec 2016, drlegendre . wrote:

Interesting find, thanks for posting this. I've seen this as well. with a
batch of old ICs which had been stored (in black foam) for some 20-30
years. The leads kind of just stayed behind in the foam..
My assumption was that the foam was simply hygroscopic, and held enough
atmospheric moisture & pollutants to foster corrosion.


There are numerous black foam formulations.

I inherited some lenses (including a Leitz Tele-Elmarit 180mm (<250 made)) 
that had been stored for a few decades in an essentially airtight case 
with black foam.  When I first opened the case, it seemed as though there 
was liquid in the case, with an intense vinegar? smell.  Second time that 
I opened the case, a few hours later, it was dry and crumbly, and the 
outer painted surfaces of the lenses were badly pitted and had to scrape 
bits of the foam off, but NOT at all like water damage.  It turned that 
lens from mint condition and a major rarity, into usable but POOR cosmetic 
condition (a loss of more than a thousand dollars in value!).
(Three other cases had simply disappeared between the time my buddy died 
and the time that the county let us go through the house.)

Re: Black anti-static foam corrosion

[drlegendre .]

Interesting find, thanks for posting this. I've seen this as well. with a
batch of old ICs which had been stored (in black foam) for some 20-30
years. The leads kind of just stayed behind in the foam..

My assumption was that the foam was simply hygroscopic, and held enough
atmospheric moisture & pollutants to foster corrosion.

On Sat, Dec 3, 2016 at 9:06 AM, Al Kossow  wrote:

>
> I was curious what the compound is that corrodes IC leads in old black
> anti-static foam
>
> adipic acid
>
> https://www.febo.com/pipermail/time-nuts/2008-July/032531.html
>
> and google for polyurethane and adipic acid
>
> https://www.jstor.org/stable/20619421
> Corrosion on Metallic Tokens Stored in Polyurethane Foam
>
>
>

Re: ISO Tekelec Chameleon 32 mfm disk

[Al Kossow]

On 12/3/16 2:06 PM, Mattis Lind wrote:
> 2016-11-28 20:27 GMT+01:00 Al Kossow :
> 
>> 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
>>
> 
> 
> I am not sure if this is what you are looking for. I have a Tekelec
> Chameleon.
> 
> Not tested though. Might be able to power it up if there are interest. Or
> pull the harddrive and make an image using Davids MFM emulator.
> 
> https://drive.google.com/open?id=0B-rp4vyPPYu1Sjk3V2lUUk50ZTg
> 

that is the earlier model, but it would be a good idea to pull the hd and image
that and the floppies.

Re: HP1631D Logic Analyzer..Software???

[Glen Slick]

On Sat, Dec 3, 2016 at 2:00 PM, Rik Bos  wrote:
> Glen,
>
> Are you sure it's the HP 82161 drive that's for the 82176A mini cassette and 
> not the DC100 tapes.
> If it's the DC100 tape, it may be possible to read it with a HP-85 or an 
> 9877A tape drive.
> It depends on the tape format if the tapes are readable on other systems.
>
> -Rik

I found the tape. It is a "MINI DATA CASSETTE":
http://www.hpmuseum.net/images/82176A-40.jpg

Part number 10269-11014, "6809 INVERSE ASSEMBLER".

This page says the 82176A cartridges are extremely reliable and they
have been able to read every tape they have come accross:
http://www.hpmuseum.net/display_item.php?hw=676

I have no means to read and dump this tape myself.

Re: ISO Tekelec Chameleon 32 mfm disk

[Mattis Lind]

2016-11-28 20:27 GMT+01:00 Al Kossow :

> 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
>


I am not sure if this is what you are looking for. I have a Tekelec
Chameleon.

Not tested though. Might be able to power it up if there are interest. Or
pull the harddrive and make an image using Davids MFM emulator.

https://drive.google.com/open?id=0B-rp4vyPPYu1Sjk3V2lUUk50ZTg

RE: HP1631D Logic Analyzer..Software???

[Rik Bos]

Glen,

Are you sure it's the HP 82161 drive that's for the 82176A mini cassette and 
not the DC100 tapes.
If it's the DC100 tape, it may be possible to read it with a HP-85 or an 9877A 
tape drive.
It depends on the tape format if the tapes are readable on other systems.

-Rik

> -Oorspronkelijk bericht-
> Van: cctalk [mailto:cctalk-boun...@classiccmp.org] Namens Glen Slick
> Verzonden: zaterdag 3 december 2016 22:43
> Aan: General Discussion: On-Topic and Off-Topic Posts
> Onderwerp: Re: HP1631D Logic Analyzer..Software???
> 
> On Sat, Dec 3, 2016 at 12:13 PM, Holm Tiffe  wrote:
> > Hi folks,
> >
> > I have an HP1631D Logic Analyzer for some years now und got an HP9121
> > dual Floppy drive that fits to it yesterday.
> > I've tested the drive, formating disks, storing and reading data ist
> > working :-) While reading the Users Manual of the LA I've found out
> > that besides of storing setup- and configuration data on the disk,
> > there should some loadable disassemblers for the HP1631D exist on
> > floppies..
> >
> > The Logic Analyzer is very limited from todays point of view but for
> > example an Z80 disassembler where nice to have.
> > Has someone out here such disassemblers (Z180, 8085, 8080, 6809 etc)
> > for the HP1631D?
> 
> I have a 3.5-inch floppy part number 10342-13012 for the 10342B Bus
> Preprocessor (HP-IB, RS-232C/V.24, RS-449) for HP1630A/D/G and 1631A/D
> logic analyzers. I'll have to create an ImageDisk dump of that floppy.
> 
> I also have a tape somewhere if I can find it that is probably for the either 
> the
> 6800/6802 10307B (64672B) or 6809/6809E 10308B (64671A) preprocessor if I
> remember correctly. I don't have an 82161A HP-IL tape drive to try to read and
> dump that tape. If I find that tape I should send it to someone with a working
> 82161A HP-IL tape drive and the means to dump and archive that tape.

RE: HP1631D Logic Analyzer..Software???

[Jay West]

If there are any problems reading Glen's copy, let me know, I have the same 
disks for my 1631. Might have gotten them from Glen :)

J

Re: HP1631D Logic Analyzer..Software???

[Glen Slick]

On Sat, Dec 3, 2016 at 12:13 PM, Holm Tiffe  wrote:
> Hi folks,
>
> I have an HP1631D Logic Analyzer for some years now und got an HP9121
> dual Floppy drive that fits to it yesterday.
> I've tested the drive, formating disks, storing and reading data ist
> working :-)
> While reading the Users Manual of the LA I've found out that besides of
> storing setup- and configuration data on the disk, there should some
> loadable disassemblers for the HP1631D exist on floppies..
>
> The Logic Analyzer is very limited from todays point of view but for
> example an Z80 disassembler where nice to have.
> Has someone out here such disassemblers (Z180, 8085, 8080, 6809 etc)
> for the HP1631D?

I have a 3.5-inch floppy part number 10342-13012 for the 10342B Bus
Preprocessor (HP-IB, RS-232C/V.24, RS-449) for HP1630A/D/G and 1631A/D
logic analyzers. I'll have to create an ImageDisk dump of that floppy.

I also have a tape somewhere if I can find it that is probably for the
either the 6800/6802 10307B (64672B) or 6809/6809E 10308B (64671A)
preprocessor if I remember correctly. I don't have an 82161A HP-IL
tape drive to try to read and dump that tape. If I find that tape I
should send it to someone with a working 82161A HP-IL tape drive and
the means to dump and archive that tape.

Intel C1101A

[Brad H]

Putting this out there for those hopefully in the know.

 

I have been acquiring date-correct ICs and parts for my Mark-8 project,
which is years down the line.  I'm planning to build it on very carefully
replicated clone boards, based off my originals.  For my purposes, I'm
trying to keep ICs early 1975 or earlier.

 

Most Mark-8s that I've seen have P1101a plastic encapsulated RAMs.  Most are
Intel brand, but I've seen some that I think might be National or
something.. they just say P1101A on top.

 

The only source other than ebay that I have are those big chip vendors like
Summit.  And the problem with them is they aren't always precise about date
codes.  The P1101A, because they were produced for years, have a wide range
of codes and the places I prospected them from couldn't guarantee 75 or
prior.  

 

To my surprise, I found a few places had C1101A.  They are white ceramic,
gold legs.  They have a 'batch code' of F1268.   I got 16 of them for $14
each.  I was going to get 32, but Summit also surprised me with 5 1973
vintage Signetics n8263s @ $25 each.  I hadn't been able to find any
pre-1980 so I snatched those.. but that put me beyond a budget where I could
buy 32.  I figured I'd buy 16 chips for now and then buy another 16 the next
month.

 

Now of course, the chip houses have turned tables on me.  They want $48 per
chip instead of $14 like last time.  And checking around, that seems to be
uniform.  Now, I'm not averse to paying that, though it will sting.  But I
want to make sure my assumptions are correct.. that these white vintage ICs
are in fact pre-76.  Can anyone confirm that?  The info out there is a
little vague.

 

And would it be totally out of place for C1101as to be on a Mark-8?  Could a
hobbyist have had a source for them, beyond having some lying around?

HP1631D Logic Analyzer..Software???

[Holm Tiffe]

Hi folks,

I have an HP1631D Logic Analyzer for some years now und got an HP9121
dual Floppy drive that fits to it yesterday.
I've tested the drive, formating disks, storing and reading data ist
working :-)
While reading the Users Manual of the LA I've found out that besides of
storing setup- and configuration data on the disk, there should some
loadable disassemblers for the HP1631D exist on floppies..

The Logic Analyzer is very limited from todays point of view but for
example an Z80 disassembler where nice to have.
Has someone out here such disassemblers (Z180, 8085, 8080, 6809 etc)
for the HP1631D?

BTW: My unit has an "upgraded from HP1630" printed on the faceplate..
are there possibilities to upgrade it further? More Memory etc?

..same Question for the Dolch (DLI) C100D, there should exist some ROM
based Disassemblers and I'm looking fors uch Eprom Contentes.
Currently I have additionally two Dolch 64300 with some additional
Software here, but the Eproms don't fit in to the later C100D.
Thats ugly, since the C100D is much smaller


Regards,

Holm
-- 
  Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, 
 Freiberger Straße 42, 09600 Oberschöna, USt-Id: DE253710583
i...@tsht.de Fax +49 3731 74200 Tel +49 3731 74222 Mobil: 0172 8790 741

Re: Double Buffer RK11-C

[Noel Chiappa]

> I'm working on the prints now.

OK, done and uploaded:

  http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/RK11-C-DB_EngrDrws_Dec72.pdf

I haven't had the time to pore over them to figure out exactly what the
changes do, but they add two buffer registers (ABUF and BBUF), so they
probably offer greater resilience to DMA contention on the UNIBUS.

I don't yet know if they are used for write as well as read (the RK11-C-DB
block diagram in the prints suggests not, as it doesn't show a path from any
RK registers to the ABUF, just from the UNIBUS - i.e. only usable on reads),
or if there are any user-visible programming changes (I suspect not).


For those with an RK11-C, these prints are somewhat clearer than the prints
for the 'basic' RK11-C which are online, so although there are a number of
changes (see:

  http://gunkies.org/wiki/RK11-C_disk_controller#Engineering_drawings

for info on which sheets have changes), use of these can help decipher some
of the hard-to-read pages of the 'basic' RK11-C drawings.

Also, the prints for the 'basic' RK11-C are missing a couple of pages:

  18 - Disk Cable and Termination
  19 - Bus "D" Drvrs and Rcvrs

which are present (albeit perhaps modified, for the second one) in this set.

Noel

Black anti-static foam corrosion

[Al Kossow]

I was curious what the compound is that corrodes IC leads in old black 
anti-static foam

adipic acid

https://www.febo.com/pipermail/time-nuts/2008-July/032531.html

and google for polyurethane and adipic acid

https://www.jstor.org/stable/20619421
Corrosion on Metallic Tokens Stored in Polyurethane Foam

Re: Thinking about acquiring PDP stuff

[allison]

On 12/02/2016 06:18 PM, Brad H wrote:
>
>  Original message 
> From: allison  
> Date: 2016-12-02  2:23 PM  (GMT-08:00) 
> To: cctalk@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-boun...@classiccmp.org] On Behalf Of Rich 
>> Alderson
>> Sent: Thursday, December 1, 2016 1:34 PM
>> To: 'General Discussion: On-Topic and Off-Topic Posts' 
>> 
>> 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@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. :)
An 8e box with boards for a reasonable system is still heavier than a
I230.  That's not
counting the IO terminal (asr33). :)  I know that as I've had the
opportunity to carry
both of them to the door and if I got there it was mine, they aren't
light at all.  FYI I
think the DEC docs for the 8E might weigh in as impressive!

DEC did some impressive boxes, the documentation and training alone was also
pretty important as many of the people familiar with them get their
training that
way.  Intel learned from that model which is why databooks and other
info is
common from the era.  Later RS, Apple, and even IBM would follow the model
of get while they are young and make them loyal.

Allison

Growing the hobby

[Evan Koblentz]

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-computing-social-media-icon-1198500). 
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
e...@vcfed.org

Intel iUP-201 repair

[John S]

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
www.intel-vintage.info
This Site about Intel old staffs like ICs ,Manuals,Tools