Re: KIM-1 Debugging tool

[dwight]

Hi Santo Nucifora  and Cameron Kaiser

Your email addresses have bounced.

Please send a private mail to me with a useful

email address.

Dwight



From: cctalk  on behalf of dwight 

Sent: Wednesday, November 16, 2016 7:15:47 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: KIM-1 Debugging tool

Actually it'll use a EEPROM for the 6530 emulator. I've located

some small 28C64s. The advantage is that these can be programmed

with the debug board while on the KIM board. It should look good as

well because it will be tucked under the 6532. The registers are slightly

different on the 6530 and 6532 but they should work the same if one

ties the 6532s A4 a constant high. This looses half the 6532s 128 bytes

of RAM but the 6530 only had 64 bytes anyway so nothing really lost.

The only difference then is the interrupt. The 6532 has edge or level

interrupt but few people wire up the interrupt. It isn't clear but I believe

the 6530 is a level interrupt and that should be the reset level for the

6532.

I'm looking at board maker options.

Dwight



From: cctalk  on behalf of allison 

Sent: Sunday, November 13, 2016 10:07:36 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: KIM-1 Debugging tool


On 11/13/2016 12:10 PM, Pete Turnbull wrote:
> On 13/11/2016 15:52, dwight wrote:
>
>> I've created a simple debugging board that one can plug onto the
>> KIM's expansion buss that has debug code on it. It allows one to find
>> out what is failing on the KIM so they know what to replace.
>>
>> While developing it, I found that my 6530-002 is bad. As we all know,
>> these are custom made and no longer available. There is a similar
>> part, the 6532 that is similar, without ROM.
>
>> After verifying that every thing works, I may create PC boards for
>> the debug and 6532 adapter.
>
>> I'm looking to see how many people would be interested in buying a
>> set of boards?
>
> Count me in, please.
>
Add me to the list. It is possible to have the 6532 and a eprom as a
6530 emulator.

Allison

RE: eBay: 1982 Prime Computer

[Fred Cisin]

On Wed, 16 Nov 2016, Jay West wrote:
I have never seen where paying someone on ebay via paypal required them 
to "accept the funds". They just "get them" I thought.



If they do not HAVE a Paypal account (or CLOSED one??),
then a payment to them would consist of Paypal sending them an email 
saying that there is money for them, and for them to do a special "guest"? 
login to ask to be sent the money.
If they haven't done that, then Paypal might say that they haven't 
"accepted" the money yet.


If they cheated somebody in the past, and OWE money, then Paypal might 
require them to agree to make good on the previous (have some or all 
of the incoming money go to back debts?)  before they can accept 
the money??

Re: OT- PBS tonight...Watch TV along with Ed# Recording studio history... This is

[ethan]

PBS tonight...Watch TV along with Ed#  Recording studio  history...  This
is the sounds of our music! - check your time guide for AZ  pm - however
calif and others can differ  Soundbreaking - Painting with  Sound #102 Tuesday,
November 15, 09:00 pm on 8.1 ((AZ TIME Othere  state  PBS check your Sched.
Duration: 0:56:46 Description: Learn how the recording  studio itself became
an instrument. From the advent of magnetic tape, chart the  evolution of
multi-track recording and the ingenuity of artists such as the  Beatles, Beach
Boys, Pink Floyd and Fleetwood Mac.
http://www.azpbs.org/previews/play.php?vidId=9753


If you're into this, you should also check out the documentary Sound City. 
Also there is a Muscle Shoals recording studio documentary as well that is 
on NetFlix.



--
Ethan O'Toole

Re: eBay: 1982 Prime Computer

[j...@cimmeri.com]

On 11/16/2016 3:30 PM, Jay West wrote:

So I took a chance.

...

Seller hasn't responded to any of the previous emails, nor have they 
acknowledged the purchase in any way.

...

Crossing my fingers


Give it a few weeks.  He could be out on 
the Tundra somewhere.  (Is there a 
Tundra in Alaska?!)


- J.

Re: General TC11 DECtape diagnostic/formatter questions

[Paul Koning]

> On Nov 15, 2016, at 5:40 PM, Josh Dersch  wrote:
> 
> ...
> I noticed the following commented-out line at the beginning of the program:
> 
> START:
> ; RESET   ;CLEAR THE WORLD
> ; MOV #P7,PS  ;LOCKOUT P1 BY RAISING CPU PRIORITY <<
> 
> Uncommenting the MOV #P7,PS line allows the formatter to run properly.
> It appears that interrupts (I'd guess the LTC interrupt) were taking
> enough time away from the program to cause it to miss data; I'm
> guessing it's because I'm running the FB monitor rather than the SJ
> monitor, but I'm not familiar enough with RT-11 yet to know exactly
> where to place the blame.

Yes, commenting out that code is clearly a bug.  The RALL/WALL/WRTM functions 
are used in program I/O mode, so the CPU has to be ready with each new word as 
the tape finishes with the previous one.  Interrupts are most definitely 
supposed to be disabled.  DECtape formatting is a standalone activity, not 
something run under any OS.

RT-11 FB is likely to do a bit more stuff per clock interrupt, but either way, 
you're entirely correct that interrupts -- clock or otherwise -- need to be 
disabled.  The consequence of spurious interrupts might be a corrupt mark 
track, or wrong data written by the WALL pass, or verify errors during the RALL 
pass.

BTW, on RALL, it's actually possible to use DMA for the lower 16 bits of the 18 
bit data.  The RT11 utility FILEX does that when reading PDP10 format tapes.  
(I suppose the same might be true for WALL, I haven't heard of that being 
done.)  But the conventional way is to ignore the DMA and handle the data via 
the Data register plus the two extended data bits in the status register.

paul

RE: eBay: 1982 Prime Computer

[Jay West]

So I took a chance.

Seller hasn't responded to any of the previous emails, nor have they 
acknowledged the purchase in any way.

Something I have never seen before in all my ebay transactions... when I go  
into ebay instead of a greyed out $ symbol (unpaid) or black $ symbol (paid)... 
it has an hourglass. Hovering the mouse said "your payment is being processed". 
Kinda odd since the payment was from paypal funds already on account. So I 
logged into paypal

Paypal says "eBay - fishslayer40@ (redacted) hasn't accepted yet." 
Google shows no trace of that email address and while not a red flag, usually 
something is in the search results for someone's email address.

I have never seen where paying someone on ebay via paypal required them to 
"accept the funds". They just "get them" I thought.

Crossing my fingers

J

Re: eBay: 1982 Prime Computer

[Fred Cisin]

Seller hasn't responded to any of the previous emails, nor have they 
acknowledged the purchase in any way.

Crossing my fingers

On Wed, 16 Nov 2016, j...@cimmeri.com wrote:
Give it a few weeks.  He could be out on the Tundra somewhere.  (Is there a 
Tundra in Alaska?!)


IF he has a valid Paypal account, then Paypal would move the money to his 
account, and show it as "paid".  Disunirregardless of whether he is 
around.


The non-show of "paid" indicates that his Paypal account is NOT valid. 
Which could be as simple as a typo on his part in listing his account with 
eBay (thus pointing to an address that Paypal doesn't recognize).
'Course, when he complains about problems with Paypal and wants you to 
send the money by Western Union, . . .

RE: eBay: 1982 Prime Computer

[Ali]

Could  be a number of things. Usually the seller has setup the wrong email 
address in eBay. I.e. they put in an email address for their PayPal account 
that does not match the actual PP account. If he is real a quick call to eBay 
will get it fixed. 

 Original message 
From: Jay West  
Date: 11/16/16  12:30 PM  (GMT-08:00) 
To: "'General Discussion: On-Topic and Off-Topic Posts'" 
 
Subject: RE: eBay: 1982 Prime Computer 

So I took a chance.

Seller hasn't responded to any of the previous emails, nor have they 
acknowledged the purchase in any way.

Something I have never seen before in all my ebay transactions... when I go  
into ebay instead of a greyed out $ symbol (unpaid) or black $ symbol (paid)... 
it has an hourglass. Hovering the mouse said "your payment is being processed". 
Kinda odd since the payment was from paypal funds already on account. So I 
logged into paypal

Paypal says "eBay - fishslayer40@ (redacted) hasn't accepted yet." 
Google shows no trace of that email address and while not a red flag, usually 
something is in the search results for someone's email address.

I have never seen where paying someone on ebay via paypal required them to 
"accept the funds". They just "get them" I thought.

Crossing my fingers

J

Re: eBay: 1982 Prime Computer

[Cameron Kaiser]

> > > > This is all the seller's responsibility.  All Jay has to do is wait.
> > >
> > > If he put down the wrong email address, that would explain why no replies
> > > to inquiries
> >
> > Possibly, but not entirely since eBay has its own webmail system.   I
> > presume any seller
> > would occasionally log in to check for activity on one's listed items.
>
> Bruh, fishslayer40 is obviously out slayin' fishes.

Slayin' *forty* fishes.

-- 
 personal: http://www.cameronkaiser.com/ --
  Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com
-- I feel sorry for you, son. I got forty fishes and a problem ain't one. -

Re: eBay: 1982 Prime Computer

[Pete Lancashire]

Give PP a call, not had this problem before but they have been very helpful
each time

-pete

On Wed, Nov 16, 2016 at 12:43 PM, Fred Cisin  wrote:

> On Wed, 16 Nov 2016, Jay West wrote:
>
>> I have never seen where paying someone on ebay via paypal required them
>> to "accept the funds". They just "get them" I thought.
>>
>
> 
> If they do not HAVE a Paypal account (or CLOSED one??),
> then a payment to them would consist of Paypal sending them an email
> saying that there is money for them, and for them to do a special "guest"?
> login to ask to be sent the money.
> If they haven't done that, then Paypal might say that they haven't
> "accepted" the money yet.
>
> If they cheated somebody in the past, and OWE money, then Paypal might
> require them to agree to make good on the previous (have some or all of the
> incoming money go to back debts?)  before they can accept the money??
>
>

Re: eBay: 1982 Prime Computer

[j...@cimmeri.com]

This is all the seller's 
responsibility.  All Jay has to do is wait.


- J.

On 11/16/2016 3:58 PM, Pete Lancashire 
wrote:

Give PP a call, not had this problem before but they have been very helpful
each time

-pete

On Wed, Nov 16, 2016 at 12:43 PM, Fred Cisin  wrote:


On Wed, 16 Nov 2016, Jay West wrote:


I have never seen where paying someone on ebay via paypal required them
to "accept the funds". They just "get them" I thought.



If they do not HAVE a Paypal account (or CLOSED one??),
then a payment to them would consist of Paypal sending them an email
saying that there is money for them, and for them to do a special "guest"?
login to ask to be sent the money.
If they haven't done that, then Paypal might say that they haven't
"accepted" the money yet.

If they cheated somebody in the past, and OWE money, then Paypal might
require them to agree to make good on the previous (have some or all of the
incoming money go to back debts?)  before they can accept the money??

Re: eBay: 1982 Prime Computer

[Fred Cisin]

On Wed, 16 Nov 2016, j...@cimmeri.com wrote:

This is all the seller's responsibility.  All Jay has to do is wait.


Meanwhile, the seller is impatiently waiting, while closely monitoring the 
wrong account, waiting for it; eventually giving up and relisting the 
item?

Re: eBay: 1982 Prime Computer

[Ian Finder]

Bruh, fishslayer40 is obviously out slayin' fishes.

On Wed, Nov 16, 2016 at 2:27 PM, j...@cimmeri.com  wrote:

>
> Possibly, but not entirely since eBay has its own webmail system.   I
> presume any seller
> would occasionally log in to check for activity on one's listed items.
>
> - J.
>
>
> On 11/16/2016 5:20 PM, Al Kossow wrote:
>
>> If he put down the wrong email address, that would explain why no replies
>> to inquiries
>>
>> On 11/16/16 2:17 PM, Fred Cisin wrote:
>>
>>> On Wed, 16 Nov 2016, j...@cimmeri.com wrote:
>>>
 This is all the seller's responsibility.  All Jay has to do is wait.

>>>
>>>
>>>
>>>
>>
>>


-- 
   Ian Finder
   (206) 395-MIPS
   ian.fin...@gmail.com

Re: eBay: 1982 Prime Computer

[Al Kossow]

If he put down the wrong email address, that would explain why no replies to 
inquiries

On 11/16/16 2:17 PM, Fred Cisin wrote:
> On Wed, 16 Nov 2016, j...@cimmeri.com wrote:
>> This is all the seller's responsibility.  All Jay has to do is wait.
> 
> Meanwhile, the seller is impatiently waiting, while closely monitoring the 
> wrong account, waiting for it; eventually
> giving up and relisting the item?
> 
> 

Re: eBay: 1982 Prime Computer

[j...@cimmeri.com]

On 11/16/2016 5:17 PM, Fred Cisin wrote:
On Wed, 16 Nov 2016, j...@cimmeri.com 
wrote:
This is all the seller's 
responsibility.  All Jay has to do is 
wait.


Meanwhile, the seller is impatiently 
waiting, while closely monitoring the 
wrong account, waiting for it; 
eventually giving up and relisting the 
item?


If the seller is completely incompetent, 
they might try to behave as you 
describe.   But, since the seller has 
sufficient wherewithal to post an item 
with photos, then they're sufficient to 
see that the item is now listed as 
"sold" (they also receive an ebay email 
to that effect), and can as easily see 
that's it's been paid for and contact 
Jay if they have any questions


In over a decade of being on eBay, I've 
had similar things happen and never 
needed a buyer to figure things out for me.


- J.

Re: eBay: 1982 Prime Computer

[j...@cimmeri.com]

Possibly, but not entirely since eBay 
has its own webmail system.   I presume 
any seller
would occasionally log in to check for 
activity on one's listed items.


- J.

On 11/16/2016 5:20 PM, Al Kossow wrote:

If he put down the wrong email address, that would explain why no replies to 
inquiries

On 11/16/16 2:17 PM, Fred Cisin wrote:

On Wed, 16 Nov 2016, j...@cimmeri.com wrote:

This is all the seller's responsibility.  All Jay has to do is wait.

Re: eBay: 1982 Prime Computer

[Wayne Sudol]

Had the same problem with a seller.  I always got the "seller hasn't
accepted the payment. It was trying because ebay didn't give them the
correct info when they cheked into it. Finally, the seller checked the
account details and said the account was linked to an "email" address that
they hadn't used in a long time.







Wayne Sudol
Riverside PressEnterprise
A DigitalFirst Media Newspaper.


On Wed, Nov 16, 2016 at 12:36 PM, Ali  wrote:

> Could  be a number of things. Usually the seller has setup the wrong email
> address in eBay. I.e. they put in an email address for their PayPal account
> that does not match the actual PP account. If he is real a quick call to
> eBay will get it fixed.
>
>  Original message 
> From: Jay West 
> Date: 11/16/16  12:30 PM  (GMT-08:00)
> To: "'General Discussion: On-Topic and Off-Topic Posts'" <
> cctalk@classiccmp.org>
> Subject: RE: eBay: 1982 Prime Computer
>
> So I took a chance.
>
> Seller hasn't responded to any of the previous emails, nor have they
> acknowledged the purchase in any way.
>
> Something I have never seen before in all my ebay transactions... when I
> go  into ebay instead of a greyed out $ symbol (unpaid) or black $ symbol
> (paid)... it has an hourglass. Hovering the mouse said "your payment is
> being processed". Kinda odd since the payment was from paypal funds already
> on account. So I logged into paypal
>
> Paypal says "eBay - fishslayer40@ (redacted) hasn't accepted
> yet." Google shows no trace of that email address and while not a red flag,
> usually something is in the search results for someone's email address.
>
> I have never seen where paying someone on ebay via paypal required them to
> "accept the funds". They just "get them" I thought.
>
> Crossing my fingers
>
> J
>
>
>

Re: NCD19 / Xncd19

[Ken Seefried]

> Is the 701 based on the RacerX from LSI?

Good question...nice shout-out for an obscure MIPS variant.  The
Explora 700 is, however, not a RacerX, but an R4700.  With up to 256MB
of RAM.  Which is nice.

KJ

Re: SPRAGUE capacitor for Tektronix 4051.

[Brent Hilpert]

On 2016-Nov-16, at 8:44 PM, Jon Elson wrote:
> On 11/16/2016 10:10 PM, drlegendre . wrote:
>> "Note the "tube audio" folks gravitate to that stuff and tend to cause
>> seriously sick prices, because tubes."
>> 
>> 
>> FYI - I've installed dozens of the new-production CE / Mallory caps, all of
>> them in the 350-525V range. Zero complaints, zero comebacks, in as long as
>> I've installed them. For those of us in that field, they're like a gift
>> from the gods.
>> 
> Vintage tube audio doesn't need to get involved, except for the old-style 
> twist-lock Mallory cap design.
> All the off-line switching supplies use either 250 V (120 supply only) or 
> 400+ (120/240 supply) capacitors as the main input filter. So, at least, 
> capacitors in that voltage range are STILL being made, and are in all 
> computers, TVs and other home appliances.  (Yes, I know the OP needed a 30 V 
> cap.)
> 
> So, some other tube gear replacement parts may be scarcer than hen's teeth, 
> but the HV caps are easily available.

(tending off-topic . . )

As long as one is being careful about the size (capacitance) of the 
replacements.
IME, I've found limited benefit in trying to use/source/scavenge 
switching-supply caps for tube gear.

The mains-side filter caps for switching supplies tend to be large in 
capacitance (100-200 and > uF), and typically are not suitable for replacing 
the ~ 8-40uF B+ filter caps in vintage tube electronics that have tube 
rectifiers. 

Maybe there are smaller ones in the smaller switching supplies around these 
days, I haven't looked at those recently.

Re: SPRAGUE capacitor for Tektronix 4051.

[drlegendre .]

"The mains-side filter caps for switching supplies tend to be large in
capacitance (100-200 and > uF), and typically are not suitable for
replacing the ~ 8-40uF B+ filter caps in vintage tube electronics that have
tube rectifiers."

This is true.

All of the common vacuum diode rectifiers have fairly significant
limitations, for the 1st cap in a cap-input PSU.

Devices like the 5U4 and 5AR4 might tolerate as much as 40-80uF at the
first pole (which is still fairly light), while others such as 5V4 might
only tolerate as little 4uF.

Point of my post - it seems as if the tube audio folks were being blamed
and/or shamed for the cost of high-voltage electrolytics.. and if anything,
they keep both the volume and demand up, and the prices reasonable.



On Wed, Nov 16, 2016 at 11:37 PM, Brent Hilpert  wrote:

> On 2016-Nov-16, at 8:44 PM, Jon Elson wrote:
> > On 11/16/2016 10:10 PM, drlegendre . wrote:
> >> "Note the "tube audio" folks gravitate to that stuff and tend to cause
> >> seriously sick prices, because tubes."
> >>
> >>
> >> FYI - I've installed dozens of the new-production CE / Mallory caps,
> all of
> >> them in the 350-525V range. Zero complaints, zero comebacks, in as long
> as
> >> I've installed them. For those of us in that field, they're like a gift
> >> from the gods.
> >>
> > Vintage tube audio doesn't need to get involved, except for the
> old-style twist-lock Mallory cap design.
> > All the off-line switching supplies use either 250 V (120 supply only)
> or 400+ (120/240 supply) capacitors as the main input filter. So, at least,
> capacitors in that voltage range are STILL being made, and are in all
> computers, TVs and other home appliances.  (Yes, I know the OP needed a 30
> V cap.)
> >
> > So, some other tube gear replacement parts may be scarcer than hen's
> teeth, but the HV caps are easily available.
>
> (tending off-topic . . )
>
> As long as one is being careful about the size (capacitance) of the
> replacements.
> IME, I've found limited benefit in trying to use/source/scavenge
> switching-supply caps for tube gear.
>
> The mains-side filter caps for switching supplies tend to be large in
> capacitance (100-200 and > uF), and typically are not suitable for
> replacing the ~ 8-40uF B+ filter caps in vintage tube electronics that have
> tube rectifiers.
>
> Maybe there are smaller ones in the smaller switching supplies around
> these days, I haven't looked at those recently.

TI 990/189 debugging

[Josh Dersch]

Hi all --

Got myself a TI-990/189 single-board computer based around the TMS9980 
microprocessor (actually, a variant of it, the MP9529, which apparently 
differs only in that it has a lower maximum clock and only requires Vdd 
of 9.3V or so...)


It was advertised as "it looks like it's working, but who knows" and so 
of course it arrived and it's dead.  It powers up and nothing appears on 
the display,  and the CR1-CR4 and SHIFT LEDs are illuminated.  No 
response whatsoever.


I've spent some time yesterday and today probing the thing and I think 
the CPU is dead, but I wanted to run it past the braintrust here in case 
anyone has any experience with the 9980...


Here's what I see:

Voltages are all nominal on the +12, +5 and -5 supply; +5 and -5 are 
present at the CPU, as is 9.3V for the VDD.


At the CPU:

- CKIN is clocking at the right rate, the phi3 clock generated by the 
CPU is also correct.


- IAQ is not pulsing, so the CPU is not fetching instructions

- The Address and Data lines are all zeros with no activity whatsoever

- HOLDA is low, -HOLD is high (so the CPU is not being held)

- READY is high

- MEMEN is low (so no memory accesses are taking place)

- INT0 through INT2 is 010 (which indicates that a LOAD interrupt is 
active, more on this later)


I have verified that the POWERGOOD signal is going high after about a 
second after power-on, as expected (this causes things on the board to 
RESET appropriately).  This in turn causes the -LOAD signal from the 
Power Up/Reset circuit to go low, which causes INT 1 to go high.  (This 
is later supposed to be reset, once the CPU's IAQ line clocks after the 
first instruction is executed, but since that's dead, well, nothing 
happens.)


Based on this, I believe the CPU to be faulty.  Anyone have any thoughts 
on this?


Given the VDD difference (12V vs 9.3V), I don't think a standard TMS9980 
will work; the MP9529 seems to be difficult to source, but it shouldn't 
be hard to get 12V to the CPU...


Thanks,

Josh

Re: A computer collection in NL

[Ian S. King]

On Tue, Apr 5, 2016 at 10:38 AM, Henk Gooijen 
wrote:

> I realize that I have not done much (any) "advertisement" ...
>
> I have my collection in a "room" of some 2250 sq. feet (200 m2).
> Almost all PDP-11 models (UNIBUS and QBUS), a few VAX4000's, VLC4000,
> and a VAX-11/750.  Also several DEC peripherals, disk, tape, printer,
> and terminals. Furthere, there is a DG NOVA3, NOVA4 and an HP 21MX.
> All you see on www.pdp-11.nl can be seen in "real", and there is
> probably a bit more ...
> I am *not* saying that everything is working, au contraire! After many
> years of collecting I am now trying to get everything working.  A very
> slow process I've learned!
>
> If you are visiting The Netherlands you are welcome to my "Home of
> Famous Iron".  I live in the southern part, near Philips headquarters
> city Eindhoven.
> All I ask, if possible, is that I get a business card from you ;-)
>
> greetz,
> - Henk
>

Hi Henk,

Well, I'm in The Netherlands, but not 'in the southern part' - rather, I'm
in Leiden at an academic workshop.  Oh well, closer  I'll see your
collection someday!  Cheers -- Ian

-- 
Ian S. King, MSIS, MSCS, Ph.D. Candidate
The Information School 
Dissertation: "Why the Conversation Mattered: Constructing a Sociotechnical
Narrative Through a Design Lens

Archivist, Voices From the Rwanda Tribunal 
Value Sensitive Design Research Lab 

University of Washington

There is an old Vulcan saying: "Only Nixon could go to China."

Re: Perq 1 troubles

[Tony Duell]

> Tony that would be great; mine is a VMI monitor too. I'm sure Bitsavers
> would appreciate a copy!

I think all PERQ 1 (and 1A) monitors were VMI.
2T1's have KME portrait monitors (at least in the UK)
2T2's (and 2T4's) have either Three Rivers portrait or Moniterm
landscape monitors (I have never heard of a portrait 2T4, BTW)
AGW3300s (the ICL 68020 one) have KME landscape monitors

I will try to get the VMI manual scanned. But be warned some bits
are unreadable. It will be better than nothing.

-tony

Re: PDP-11 RL02 disk emulation

[Mike Ross]

On Sat, Nov 12, 2016 at 5:35 PM, Scott Baker  wrote:
> Hi*
>
>>> Any chance it could be put into 'production'?
>
> *I placed an order today for 3 RL02 emulator interface boards from OshPark.
> I expect it will take 2 weeks to get the boards back from OshPark.
> I am leveraging RL02 emulator work from Reinhard Heuberger, but I am
> using a newer FPGA board than his current design (the FPGA board that
> he is currently usingis not available), so there is some porting work
> required which will also take some time.

Oh I didn't know this was on the menu. I'm in a morass of pdp-11s at
the moment; I could certainly use one of these.

Mike

http://www.corestore.org
'No greater love hath a man than he lay down his life for his brother.
Not for millions, not for glory, not for fame.
For one person, in the dark, where no one will ever know or see.'

Re: HP Draftmaster RX pen plotter needs love

[Pete Lancashire]

Are you saying there is a -12V test point and there is nothing there ?

If +5 is 400mV high, that's not dangerous but it is something I'd take care
of first.

-pete

On Fri, Nov 11, 2016 at 8:35 PM, Michael Newton 
wrote:

> Thanks for the encouragement. I'm going in.
>
> I found test points on the power supply/motor driver board as detailed in
> Chapter 12 of that manual.
>
> +5v, +12v, +15v, +42v and +85v are all there (and all .4v high or so)
>
> But there is no -12v. That seems relevant.
>
> The capacitors all look OK to the naked eye.
>
> Actually diagnosing and repairing electronics is new territory for me, but
> I suppose this is where I read up, maybe pull that board out, and start
> testing diodes and caps.
>
> Thanks again Alexandre - and if you or anyone else has any clues to narrow
> it down, please share.
>
> M.
>
>
>
>
> On Fri, Nov 11, 2016 at 3:38 PM, Alexandre Souza <
> alexandre.tabaj...@gmail.com> wrote:
>
> > How is the power supply? All rails ok? Input/output capacitors not bulged
> > nor leaked?
> >
> > 2016-11-11 21:36 GMT-02:00 Michael Newton :
> >
> > > I acquired a working HP Draftmaster RX (HP part # 7596B).
> > >
> > > An awesome machine, 36" roll feed and 8 pens, complete with several pen
> > > carousels, user manual, and hundreds of working pens.
> > >
> > > I was very excited to make a splash in the art world with this thing. I
> > did
> > > get it to perfectly draw a 3 color demo page from the front panel.
> > >
> > > Thereafter it started displaying errors on the display such as "200"
> > which
> > > means it needs "mechanical calibration".
> > >
> > > Thanks to hpmuseum.net I acquired the service manual
> > > , which catalogs
> many
> > > calibrations and self-tests to run from the front panel, including the
> > > aforementioned "mechanical calibration".
> > >
> > > So I power up with the appropriate front panel keys depressed to run
> this
> > > calibration. The paper drive motor starts making noise, but the paper
> > > rollers aren't turning, and the LCD display is blank.
> > >
> > > Since that moment, the LCD display is always blank so it is currently a
> > > boat anchor.
> > >
> > > It's a terribly sad state of affairs. I have basic electronics and
> > > mechanical skills and an oscilloscope so following the troubleshooting
> > > procedures in the manual I might be able to identify a part to replace.
> > But
> > > of course, parts for sale online are are rare, expensive, used and
> > probably
> > > untested.
> > >
> > > Probably better would be lower-level repair of whatever parts are
> faulty
> > > but that's probably more than I can manage at my skill level.
> > >
> > > I'm in Seattle, WA. Is there anyone alive in the pacific NW who will
> pay
> > a
> > > visit and help me fix this thing? (The only company I found that admits
> > to
> > > working on pen plotters is 360tech in Austin, TX.)
> > >
> > > Or someone elsewhere I could ship electronics parts to for test and
> > repair?
> > > Or provide guidance, or help in any form at all?
> > >
> > > thanks
> > > M.
> > >
> >
>
>

Re: Looking for terminals again

[Mouse]

>> Anybody have extra DEC or IBM terminals in Toronto (Canada) ?
> Is Ottawa too far away?

While we're speaking of Ottawa and terminals...it's neither DEC nor
IBM, but I do have a Hazeltine in Ottawa I would like to get rid of,
but I do not like the idea of just chucking it.  Anyone interested?

I think it's a 1500, but it might be a 1420.  It's certainly got the
look of a 1500 in my memory.

I don't know whether it still works.  I'm pretty sure it worked last
time I tried it, but that was at least two moves ago.  It _looks_ in
good shape, but I trust we all know how little that means.

/~\ The ASCII Mouse
\ / Ribbon Campaign
 X  Against HTMLmo...@rodents-montreal.org
/ \ Email!   7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8 B3 27 4B

PDP-11 RL02 disk emulation

[Scott Baker]

Hi*

>> Any chance it could be put into 'production'?

*I placed an order today for 3 RL02 emulator interface boards from OshPark.
I expect it will take 2 weeks to get the boards back from OshPark.
I am leveraging RL02 emulator work from Reinhard Heuberger, but I am
using a newer FPGA board than his current design (the FPGA board that
he is currently usingis not available), so there is some porting work
required which will also take some time.

Regards,
Scott

Re: SPRAGUE capacitor for Tektronix 4051.

[Pete Lancashire]

If you can't find a replacement that is "NEW" and by that I mean made in
the past couple years ...

It has been > 30 years since I've been inside a 4051

your best bet might bt to take an axle (wires out both ends) leaded cap and
doing things like standing it on end and use a wire that runs down the side
to where the can connected, make sure the wire is insulated and then use
heat shrink to mechanically secure it.

Electrically the wire should be at least hmmm ... 18 AWG, I'd see if 16 AWG
would fit. The issue is your adding resistance but since you only working
with 60 (or 50/120/100) Hz that shouldn't be much of a problem.

-pete Ex Tekkie

On Tue, Nov 15, 2016 at 10:15 AM, Mattis Lind  wrote:

> One of the DC filter capacitors has gone open circuit in my Tektronix 4051.
> It is a SPRAGUE 9600 uF - 30VDC with a little bit unusual foot print.
>
> It might be common for other Tek equipment.
>
> Google turned up one Ebay-hit for a completed auction but that's it.
>
> Anyone has a reliable source for this type of capacitor:
>
> http://i.imgur.com/P0Nz5KW.jpg
>
>

Re: ISO Xebec S1410A fw #104792 or 104793

[Plamen Mihaylov]

Here you go - http://m88k.com/XEBEC_104788G.BIN

On Mon, Nov 14, 2016 at 3:57 PM, Al Kossow  wrote:

> I just started cataloging and dumping firmware my SASI/SCSI disk and tape
> boards
> starting with Xebec. It would be nice to find images for the two alternate
> fw
> proms for the S1410A, particularly the 8k 104793 version so I can compare
> it to
> the one used on the S1420
>
>
>

Re: Looking for terminals again

[Brian Adams]

Yeah, unfortunately Ottawa is a bit too far for me.
But if it wasn¹t I¹d be looking at that AS/400.

-brian

On 2016-11-11, 11:37 AM, "cctech on behalf of Mike"
 wrote:

>On Monday, November 07, 2016 17:22:22 Brian Adams wrote:
>> The interest in video terminals has been awoken again, and I am again
>> searching for one. I like the look/size of the VT220s, very nice and
>> compact!
>> 
>> 
>> Anybody have extra DEC or IBM terminals in Toronto (Canada) ? I¹m
>>probably
>> somewhat interested!
>> 
>> -brian
>
>Is Ottawa  too far away?
>I have a few AS400 (9404) and at least 1 terminal for it as well as
>Volker 
>Craig and a few others.
>
>
>-- 
>Collector of vintage computers http://www.ncf.ca/~ba600

Perq 1 troubles

[Mike Ross]

Just on the off-chance... does anyone have schematics for the Perq 1
portrait monitor? Mine is sick... and there are none on bitsavers. On
first power-up there was a faint raster pattern but that quickly
vanished and now there's no sign of life from the tube heaters...

Thanks

Mike

http://www.corestore.org
'No greater love hath a man than he lay down his life for his brother.
Not for millions, not for glory, not for fame.
For one person, in the dark, where no one will ever know or see.'

Re: KIM-1 Debugging tool

[allison]

On 11/13/2016 12:10 PM, Pete Turnbull wrote:
> On 13/11/2016 15:52, dwight wrote:
>
>> I've created a simple debugging board that one can plug onto the
>> KIM's expansion buss that has debug code on it. It allows one to find
>> out what is failing on the KIM so they know what to replace.
>>
>> While developing it, I found that my 6530-002 is bad. As we all know,
>> these are custom made and no longer available. There is a similar
>> part, the 6532 that is similar, without ROM.
>
>> After verifying that every thing works, I may create PC boards for
>> the debug and 6532 adapter.
>
>> I'm looking to see how many people would be interested in buying a
>> set of boards?
>
> Count me in, please.
>
Add me to the list. It is possible to have the 6532 and a eprom as a
6530 emulator.

Allison

Re: SPRAGUE capacitor for Tektronix 4051.

[allison]

On 11/15/16 2:37 PM, Curious Marc wrote:

Great link! That's a great middle ground - preserves the look without having to 
find the original cap.
Marc


On Nov 15, 2016, at 11:15 AM, Mattis Lind  wrote:

One of the DC filter capacitors has gone open circuit in my Tektronix 4051.
It is a SPRAGUE 9600 uF - 30VDC with a little bit unusual foot print.

It might be common for other Tek equipment.

Google turned up one Ebay-hit for a completed auction but that's it.

Anyone has a reliable source for this type of capacitor:

http://i.imgur.com/P0Nz5KW.jpg


You might look here.
https://www.tubesandmore.com/products/capacitors?filters=Type%3DMulti-Section%20/%20Can%20Type
Note the "tube audio" folks gravitate to that stuff and tend to cause 
seriously sick prices, because tubes.



For authentic look:
The easy way is remove the old carefully, gut it and install inside 
several smaller modern electrolytics
of the proper ratings.  Reinstall using the bottom bakelite terminal cap 
and go your merry way.


Make it work again:
Pull the old out and replace with multiple smaller modern parts and move on.

Allison

Re: Paper tape carriers and paper tape

[Pontus Pihlgren]

On Fri, Nov 11, 2016 at 02:03:36PM -0800, Ian S. King wrote:
>
> Somewhere I have a photo of the machine that IBM used to make punch cards.
> It's in a small museum in Endicott, NY.  It did indeed take a roll of paper
> made to IBM specs and produce the flat punch cards many of us know and some
> subset of those, love.  It hadn't been run in years when I saw it.
> 

Ed has some pictures of it:

http://ed-thelen.org/comp-hist/IBM-EndicottMuseum.html

/P

Re: ISO Xebec S1410A fw #104792 or 104793

[Al Kossow]

As far as creating text files in firmware directories, yes

There probably should be something on github if a bunch of people are going to 
be editing files
that could be pulled.

I'm NOT going to put up any sort of Wiki though. Bitsavers stays a collection 
of files that can
be easily mirrored with rsync.

On 11/16/16 12:25 AM, Dave Wade wrote:
> Would Al catalogue these for us ?
> 

Re: KIM-1 Debugging tool

[dwight]

Actually it'll use a EEPROM for the 6530 emulator. I've located

some small 28C64s. The advantage is that these can be programmed

with the debug board while on the KIM board. It should look good as

well because it will be tucked under the 6532. The registers are slightly

different on the 6530 and 6532 but they should work the same if one

ties the 6532s A4 a constant high. This looses half the 6532s 128 bytes

of RAM but the 6530 only had 64 bytes anyway so nothing really lost.

The only difference then is the interrupt. The 6532 has edge or level

interrupt but few people wire up the interrupt. It isn't clear but I believe

the 6530 is a level interrupt and that should be the reset level for the

6532.

I'm looking at board maker options.

Dwight



From: cctalk  on behalf of allison 

Sent: Sunday, November 13, 2016 10:07:36 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: KIM-1 Debugging tool


On 11/13/2016 12:10 PM, Pete Turnbull wrote:
> On 13/11/2016 15:52, dwight wrote:
>
>> I've created a simple debugging board that one can plug onto the
>> KIM's expansion buss that has debug code on it. It allows one to find
>> out what is failing on the KIM so they know what to replace.
>>
>> While developing it, I found that my 6530-002 is bad. As we all know,
>> these are custom made and no longer available. There is a similar
>> part, the 6532 that is similar, without ROM.
>
>> After verifying that every thing works, I may create PC boards for
>> the debug and 6532 adapter.
>
>> I'm looking to see how many people would be interested in buying a
>> set of boards?
>
> Count me in, please.
>
Add me to the list. It is possible to have the 6532 and a eprom as a
6530 emulator.

Allison

Re: NCD19 / Xncd19

[Al Kossow]

On 11/15/16 3:34 PM, Rico Pajarola wrote:
> Unfortunately, no new
> manuals that are not already on bitsavers (except for the Explora 400
> brochure).
> 

I scanned a NCD16 users manual and uploaded it to bitsavers yesterday and
created a list of the part numbers of the manuals I know about.

RE: ISO Xebec S1410A fw #104792 or 104793

[Dave Wade]

Would Al catalogue these for us ?

Dave

> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Alexandre
> Souza
> Sent: 16 November 2016 00:38
> To: General Discussion: On-Topic and Off-Topic Posts
> 
> Subject: Re: ISO Xebec S1410A fw #104792 or 104793
> 
> What about a rom cataloging site? Is it feasible?
> 
> 
> 2016-11-15 22:36 GMT-02:00 Santo Nucifora :
> 
> > Hi Al,
> >
> > I don't have those particular board with the firmware but I posted a
> > bunch of pics of what I have here, if it helps as you go through more.
> >
> > http://vintagecomputer.ca/bridgeboards-gallery/
> >
> > Hope this helps,
> > Santo
> >
> > On Tue, Nov 15, 2016 at 5:09 PM, Chuck Guzis  wrote:
> >
> > > On 11/15/2016 12:59 PM, Eric Smith wrote:
> > >
> > > > The same basic WD1000 or WD1001 controller design, with
> > > > customization, was used in the Fortune 32:16 and ACD HDC-1001.
> > > > Probably others as well.
> > >
> > > It was used in a *lot* of machines back then.  Heck, I even used one
> > > on my IBM 5150 with a Shugart SA-1001 drive.
> > >
> > > --Chuck
> > >
> >