Re: Teletype 5620 schematics

[Josh Dersch via cctalk]

On Tue, Jun 18, 2019 at 11:18 PM Jason T via cctalk 
wrote:

> On Wed, Jun 19, 2019 at 12:48 AM Ethan Dicks via cctalk
>  wrote:
> > Thanks for posting this, Al.
>
> Seconded.  I've got one with the keyboard and ladybug mouse.  Worked
> many years ago - and I'll never know if it has stopped working if I
> don't plug it in again!
>


Just a general bit of advice (which applies to many other systems discussed
here) for you 5620 owners -- the 5620 has a battery in it, soldered to the
logic board.  If you haven't already, remove it before it leaks and
destroys everything.

- Josh

Re: Teletype 5620 schematics

[Jason T via cctalk]

On Wed, Jun 19, 2019 at 12:48 AM Ethan Dicks via cctalk
 wrote:
> Thanks for posting this, Al.

Seconded.  I've got one with the keyboard and ladybug mouse.  Worked
many years ago - and I'll never know if it has stopped working if I
don't plug it in again!

Re: Teletype 5620 schematics

[Ethan Dicks via cctalk]

On Wed, Jun 19, 2019 at 1:00 AM Al Kossow via cctalk
 wrote:
> came across these this eve, probably only of interest to Seth, since he has 
> one
> http://bitsavers.org/pdf/att/5620/schematic

I have one too (from a friend who used to work in the Columbus Bell
Labs Operating System Group (cbosg)).  I found the read-through to be
quite illuminating, especially the detail on the keyboard circuit
(4800 bps TTL levels off one channel of the DUART).  I do have a
keyboard but this info makes it simple to contemplate a keyboard
adapter for those that do not.

Thanks for posting this, Al.

-ethan

Re: Whose site is 9track.net?

[Ray Jewhurst via cctalk]

It belongs to Matt Burke.  He is very active in the simh mailing list.

Ray

On Wed, Jun 19, 2019 at 12:58 AM Evan Koblentz via cctalk <
cctalk@classiccmp.org> wrote:

> Does anyone know who owns 9track.net? I couldn't find any contact
> information there.
>
>

Whose site is 9track.net?

[Evan Koblentz via cctalk]

Does anyone know who owns 9track.net? I couldn't find any contact 
information there.

VENIX on Rainbow (was Re: Wanting to get my first classic computer)

[Ethan Dicks via cctalk]

On Tue, Jun 18, 2019 at 11:53 PM Warner Losh via cctalk
 wrote:
>
> On Tue, Jun 18, 2019 at 8:08 PM Ray Jewhurst via cctalk <
> cctalk@classiccmp.org> wrote:
>
> > Hello all, I have been a student of computer history for years...
> > I would like
> > something more exotic.  (Although it might me neat to own a Rainbow.)
>
>
> All the cool kids had DEC Rainbows...

When Rainbows were new I remember being horrified at the cost and how
much of a PITA the RX50 was.  I also had no need to run CP/M myself,
so I was never a target customer anyway.

Turn the page and flash forward 35 years and I just got a couple of
Rainbows to use as heavy VT100s and to run CP/M.

> ... I'm currently on a DEC
> Rainbow VENIX boondoggle trying too reconstruct frmo v7 and sys III sources
> now available the original Venix 86R source code... :)

Interesting.  I have VENIX on a Professional 350 (it was one of the
machines I had on display for VCF East).  I haven't tried fiddling
with VENIX on a Rainbow, though I did know it existed.

Why the reconstruction?  Trying to walk the path or is there some
issue with getting original install disks or getting those disks to
load?

Mostly curious because as a long-time UNIX programmer, I do find some
of the odder UNIX implementations interesting (and certainly more
interesting to me than Yet Another DOS Box).

-ethan

Re: Looking for a Intel multibus 88/30...

[dwight via cctalk]

Maybe a iSBC 86/30?
I don't have any of these. All I have are a couple 8080 iSBC boards.
Dwight


From: Lyle Bickley 
Sent: Tuesday, June 18, 2019 8:49 PM
To: dwight
Cc: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Looking for a Intel multibus 88/30...

On Tue, 18 Jun 2019 05:24:04 +
dwight  wrote:

> Hi Lyle
>  What is a 88/45? I look up the 310 systems on the web but none
> mention 88/45.

Good catch, Dwight! It was a typo. I have two 88/45 boards and don't
need more. FYI, here's a link describing the 88/45:
http://bit.ly/2N6zKGe

Here's the description of the iSBC 88/30 that I NEED in the maintenance
manual for the System 310:
http://bit.ly/2MWMij5

> Is the PAL for address decoding or something more complicated?

Not sure. Likely for address decoding but I haven't tracked down
what else it might do. Another System 310 restorer had the identical
symptoms and issues with his 310. To be more specific: The system
begins startup and then halts (run light off) after about a second of
running. The hardware manuals says that error is either an iSBC error
or DMA hanging the system. I pulled all the DMA I/O cards from the
system to make sure it wasn't DMA...

Repeating the CORRECTION: I NEED AN iSBC 88/30!!!

Thanks again, Dwight!!!

Cheers,
Lyle
__
> From: cctalk  on behalf of Lyle
> Bickley via cctalk  Sent: Monday, June 17,
> 2019 1:39 PM To: cctalk@classiccmp.org
> Subject: Looking for a Intel multibus 88/45... (minor corrections...)
>
> I'm in the process of restoring an Intel 310 system. I had it working
> to the point where it was trying to boot - when the 88/45 processor
> began to fail intermittently and then solidly. My debugging seems to
> indicate that the problem is in a PLD - which is a serious bummer.
>
> I have preserved the ROMS (which have built-in diagnostics/debugging
> and boot capability for both floppy and Winchester hard disks) as
> files. I will make these ROM files available to Al for posting on
> bitsavers.
>
> If someone on this list has an Intel 88/45 (or Intel 310) who would be
> willing to part with it, please contact me off list. I can to either
> do a trade or cash purchase...
>
> Cheers,
> Lyle
>
> --
> 73   NM6Y
> Bickley Consulting West Inc.
> https://bickleywest.com
>
> "Black holes are where God is dividing by zero"



--
73   NM6Y
Bickley Consulting West Inc.
https://bickleywest.com

"Black holes are where God is dividing by zero"

Re: Wanting to get my first classic computer

[Warner Losh via cctalk]

On Tue, Jun 18, 2019 at 8:08 PM Ray Jewhurst via cctalk <
cctalk@classiccmp.org> wrote:

> Hello all, I have been a student of computer history for years but have
> only learned how to use classic machines vicariously through emulation.  I
> would really like to get my own classic computer but I don't know where to
> begin.  For one, I am on a very limited income and two I don't have a lot
> of space and finally I don't have much knowledge on the finer points of the
> older hardware i.e. terminals networking, etc.  I would really like a
> Vaxstation but I have also considered a '90s workstation such as an SGI
> Indy or a SparcStation.  I am pretty fluent in both VMS and Unix so any of
> those would work.  So where do I look besides e-Bay?  I see some available
> here but none near me.  I'm in the Detroit area.  Any advice would be
> appreciated.  I do know that I do now want a Mac or old PC.  I would like
> something more exotic.  (Although it might me neat to own a Rainbow.)


All the cool kids had DEC Rainbows... though to be honest, maybe I'm biased
since the DEC Rainbow 100B was my first computer and I'm currently on a DEC
Rainbow VENIX boondoggle trying too reconstruct frmo v7 and sys III sources
now available the original Venix 86R source code... :)

Though I'm sure all that other stuff is cool too...

Warner

P.S. I had a VMS Forever bumper sticker on my car for a few years thanks to
an ex-girlfriend that knew me tooo well :)

Re: Looking for a Intel multibus 88/30...

[Lyle Bickley via cctalk]

On Tue, 18 Jun 2019 05:24:04 +
dwight  wrote:

> Hi Lyle
>  What is a 88/45? I look up the 310 systems on the web but none
> mention 88/45.

Good catch, Dwight! It was a typo. I have two 88/45 boards and don't
need more. FYI, here's a link describing the 88/45:
http://bit.ly/2N6zKGe

Here's the description of the iSBC 88/30 that I NEED in the maintenance
manual for the System 310:
http://bit.ly/2MWMij5

> Is the PAL for address decoding or something more complicated?

Not sure. Likely for address decoding but I haven't tracked down
what else it might do. Another System 310 restorer had the identical
symptoms and issues with his 310. To be more specific: The system
begins startup and then halts (run light off) after about a second of
running. The hardware manuals says that error is either an iSBC error
or DMA hanging the system. I pulled all the DMA I/O cards from the
system to make sure it wasn't DMA...

Repeating the CORRECTION: I NEED AN iSBC 88/30!!!

Thanks again, Dwight!!!

Cheers,
Lyle
__
> From: cctalk  on behalf of Lyle
> Bickley via cctalk  Sent: Monday, June 17,
> 2019 1:39 PM To: cctalk@classiccmp.org
> Subject: Looking for a Intel multibus 88/45... (minor corrections...)
> 
> I'm in the process of restoring an Intel 310 system. I had it working
> to the point where it was trying to boot - when the 88/45 processor
> began to fail intermittently and then solidly. My debugging seems to
> indicate that the problem is in a PLD - which is a serious bummer.
> 
> I have preserved the ROMS (which have built-in diagnostics/debugging
> and boot capability for both floppy and Winchester hard disks) as
> files. I will make these ROM files available to Al for posting on
> bitsavers.
> 
> If someone on this list has an Intel 88/45 (or Intel 310) who would be
> willing to part with it, please contact me off list. I can to either
> do a trade or cash purchase...
> 
> Cheers,
> Lyle
> 
> --
> 73   NM6Y
> Bickley Consulting West Inc.
> https://bickleywest.com
> 
> "Black holes are where God is dividing by zero"



-- 
73   NM6Y
Bickley Consulting West Inc.
https://bickleywest.com

"Black holes are where God is dividing by zero"

Teletype 5620 schematics

[Al Kossow via cctalk]

came across these this eve, probably only of interest to Seth, since he has one
http://bitsavers.org/pdf/att/5620/schematic

Re: PDP 11/15

[Al Kossow via cctalk]

On 6/18/19 8:15 PM, Randy Dawson via cctalk wrote:
> Paul,
> That is so cool!
> How much space would it take?

10.5" of rack space

it is a PDP-11 model 15 (first generation)

Re: PDP 11/15

[Randy Dawson via cctalk]

Paul,
That is so cool!
How much space would it take?
That is my first computer (outside of timesharing and Z-80 homebrew).
My first job was on the PDP-15 to transcribe the APOLLO analog range tapes of 
the lunar experiments, primarily the seismometer moonquake data for the 
University of Texas Geophysics Lab (they designed the seismometers).

The machine was a pretty good wall, 4-5 racks.  On the other side of the room 
were the FM/Direct Bell and Howell analog range tape players and demodulators.
I ran this stuff all night long, hanging tapes, using the scope to adjust 
analog heads for the best signal and transcribe to the digital tape.
NASA was not interested in this stuff anymore, they were onto Skylab.  The 
ALSEP lunar stations were TEG powered and would go on for decades transmitting, 
probably still are.  All we got was freetime gratis from the range stations to 
point at the moon and hang a tape, the data was always bad and a challenge to 
tweak heads the best we could.

We had a Versatec electrostatic plotter to output the continuous seismic record 
as I was decoding the tapes.
Anytime there was an 'event' on the plotter, I had Dr. Yosio Nakamura's home 
number to call him in and take a look.

Many nights, we re tweaked heads, to get the last bits of clean seismometer 
data.

Randy
Trivia: As I hung a tape out of sequence once, Fortran coders fixed that next 
day.  Next time it happened, the TTY chatters, RANDY! DIDN'T YOU ALREADY ENTER 
GMT JULIAN DATE XXX:XXX:XXX
It was a all night job alone in the computer room, and I am listening  to 
Foghat between tape hangs and alignment.



From: cctalk  on behalf of Paul Anderson via 
cctalk 
Sent: Tuesday, June 18, 2019 7:16 PM
To: General Discussion: On-Topic and Off-Topic Posts; cct...@vax-11.org
Subject: PDP 11/15

I bought a large package of DEC gear last year and it came with a PDP
11/15. I have no need for this classic, and put it on the list. A few
people responded, but because of my problems, I never followed up with
them.

For those who responded, I apologize for dropping the ball. If anyone is
interested in it, please contact me off list.

BTW, I have started on pulling a few things out of the warehouse.

Thanks, Paul

Wanting to get my first classic computer

[Ray Jewhurst via cctalk]

Hello all, I have been a student of computer history for years but have
only learned how to use classic machines vicariously through emulation.  I
would really like to get my own classic computer but I don't know where to
begin.  For one, I am on a very limited income and two I don't have a lot
of space and finally I don't have much knowledge on the finer points of the
older hardware i.e. terminals networking, etc.  I would really like a
Vaxstation but I have also considered a '90s workstation such as an SGI
Indy or a SparcStation.  I am pretty fluent in both VMS and Unix so any of
those would work.  So where do I look besides e-Bay?  I see some available
here but none near me.  I'm in the Detroit area.  Any advice would be
appreciated.  I do know that I do now want a Mac or old PC.  I would like
something more exotic.  (Although it might me neat to own a Rainbow.)

Thanks

Ray

PDP 11/15

[Paul Anderson via cctalk]

I bought a large package of DEC gear last year and it came with a PDP
11/15. I have no need for this classic, and put it on the list. A few
people responded, but because of my problems, I never followed up with
them.

For those who responded, I apologize for dropping the ball. If anyone is
interested in it, please contact me off list.

BTW, I have started on pulling a few things out of the warehouse.

Thanks, Paul

Re: Two AT&T Unix PC/3B1/7300 systems available - claimed

[David Williams via cctalk]

Just want to let everyone know both Unix PCs have been claimed.

Best regards,
David

On 2019-06-18 14:06, David Williams via cctalk wrote:

Sorry for the brain fart, just so much going on that I forgot to
mention that these are located in Houston, TX.

Best regards,
David Williams

On 2019-06-18 13:10, David Williams via cctalk wrote:

I have two AT&T Unix PCs that I am offering up to interested parties
as described below:

1) AT&T Unix PC with the standard 67 MB HDD, this is the base system
and three button mouse. The right arrow key on the keyboard is broken
but the key cap is still included. This unit is also missing the
keyboard cable though I should have it around somewhere and so it
might turn up at some point at which time I'd send it along. It has
been several years since this was last powered on and I don't recall
if there are any passwords or what they might be so you may have to
hack your way into the system. Had UNIX System V installed but don't
recall what other software may be installed as well. Sold as is.

2) AT&T Unix PC. This unit comes in the original box, with keyboard
and mouse and the following documentation:
   a) AT&T Unix PC Owner's Manual
   b) AT&T Unix PC Getting Started Manual
   c) AT&T Unix System V Utilities Manual
   d) AT&T Unix PC Communications Management Manual
   e) AT&T Unit PC System Software
As with the above system, it has been a while since it was last
powered up and I don't recall if there were any passwords or what so
may need to hack into the OS. Also not sure what software was
installed besides the OS. Sold as is.

I believe I may have some more documentation around but haven't
located it yet, if I do discover it I will offer to send it along to
anyone who picks up these systems.

If you need any other info please let me know and I'll send it along.
Will entertain any offers at all and prefer local pickup but I am fine
with packing and shipping if you pay for it.

I'm offering them up to the list first though if there isn't any
interest here will possibly offer on eBay or if someone knows other
good places to list systems please let me know. Would like to move
them out. Will also have several other systems for sale/trade/haul
away very soon as I am clearing out a lot of stuff.

Best regards,
David Williams

Re: Missing posts in archive and no Subject: line

[Steve Malikoff via cctalk]

Noel said

> I'm not sure what happened, but I note the next post had no Subject: line,
> and I'm wondering if that caused it. So best to make sure your posts have
> Subject: lines.
>
>   Noel

When I posted the bit about the 360 + car photo the other day, I had a subject
line ready to go and I thought I had pasted it into the Subject, but could have
pasted into the wrong field before I hit the Submit. We've all done this I'm 
sure.

It soon bounced back to me from the cctalk list manager but I was a little 
surprised
it had made it to the list with a (no subject). Now the interesting thing is, my
message is available in the June archive, but Lawrence's followup with the
Re: (no subject) title wasn't processed by the list and as such there is no 
clickable
link to his reply there, only his name:
http://classiccmp.org/pipermail/cctalk/2019-June/thread.html

Steve.

Re: Two AT&T Unix PC/3B1/7300 systems available

[Ryan Eisworth via cctalk]

Hi David,

I'm in the Houston area, and would *love* to get these! I have been searching 
for a 3B1 for a long time.

Best regards,
Ryan

> On Jun 18, 2019, at 2:06 PM, David Williams via cctalk 
>  wrote:
> 
> Sorry for the brain fart, just so much going on that I forgot to mention that 
> these are located in Houston, TX.
> 
> Best regards,
> David Williams
> 
> On 2019-06-18 13:10, David Williams via cctalk wrote:
>> I have two AT&T Unix PCs that I am offering up to interested parties
>> as described below:
>> 1) AT&T Unix PC with the standard 67 MB HDD, this is the base system
>> and three button mouse. The right arrow key on the keyboard is broken
>> but the key cap is still included. This unit is also missing the
>> keyboard cable though I should have it around somewhere and so it
>> might turn up at some point at which time I'd send it along. It has
>> been several years since this was last powered on and I don't recall
>> if there are any passwords or what they might be so you may have to
>> hack your way into the system. Had UNIX System V installed but don't
>> recall what other software may be installed as well. Sold as is.
>> 2) AT&T Unix PC. This unit comes in the original box, with keyboard
>> and mouse and the following documentation:
>>   a) AT&T Unix PC Owner's Manual
>>   b) AT&T Unix PC Getting Started Manual
>>   c) AT&T Unix System V Utilities Manual
>>   d) AT&T Unix PC Communications Management Manual
>>   e) AT&T Unit PC System Software
>> As with the above system, it has been a while since it was last
>> powered up and I don't recall if there were any passwords or what so
>> may need to hack into the OS. Also not sure what software was
>> installed besides the OS. Sold as is.
>> I believe I may have some more documentation around but haven't
>> located it yet, if I do discover it I will offer to send it along to
>> anyone who picks up these systems.
>> If you need any other info please let me know and I'll send it along.
>> Will entertain any offers at all and prefer local pickup but I am fine
>> with packing and shipping if you pay for it.
>> I'm offering them up to the list first though if there isn't any
>> interest here will possibly offer on eBay or if someone knows other
>> good places to list systems please let me know. Would like to move
>> them out. Will also have several other systems for sale/trade/haul
>> away very soon as I am clearing out a lot of stuff.
>> Best regards,
>> David Williams

Re: Apollo Computer Article

[Daniel Seagraves via cctalk]

> On Jun 18, 2019, at 10:29 AM, Will Cooke via cctalk  
> wrote:
> 
> This site has TONS of stuff, including (links to) much original 
> documentation.  There are also copies of actual flight software that can be 
> run on the simulator.
> https://www.ibiblio.org/apollo/

There is also a spaceflight simulator add-on that has that emulator and the 
software embedded into it, so you can have the actual software do what it was 
intended to:
http://nassp.sourceforge.net/wiki/Main_Page 


(Full Disclosure: I am the maintainer-by-default)

Re: Two AT&T Unix PC/3B1/7300 systems available

[David Williams via cctalk]

Sorry for the brain fart, just so much going on that I forgot to mention 
that these are located in Houston, TX.


Best regards,
David Williams

On 2019-06-18 13:10, David Williams via cctalk wrote:

I have two AT&T Unix PCs that I am offering up to interested parties
as described below:

1) AT&T Unix PC with the standard 67 MB HDD, this is the base system
and three button mouse. The right arrow key on the keyboard is broken
but the key cap is still included. This unit is also missing the
keyboard cable though I should have it around somewhere and so it
might turn up at some point at which time I'd send it along. It has
been several years since this was last powered on and I don't recall
if there are any passwords or what they might be so you may have to
hack your way into the system. Had UNIX System V installed but don't
recall what other software may be installed as well. Sold as is.

2) AT&T Unix PC. This unit comes in the original box, with keyboard
and mouse and the following documentation:
   a) AT&T Unix PC Owner's Manual
   b) AT&T Unix PC Getting Started Manual
   c) AT&T Unix System V Utilities Manual
   d) AT&T Unix PC Communications Management Manual
   e) AT&T Unit PC System Software
As with the above system, it has been a while since it was last
powered up and I don't recall if there were any passwords or what so
may need to hack into the OS. Also not sure what software was
installed besides the OS. Sold as is.

I believe I may have some more documentation around but haven't
located it yet, if I do discover it I will offer to send it along to
anyone who picks up these systems.

If you need any other info please let me know and I'll send it along.
Will entertain any offers at all and prefer local pickup but I am fine
with packing and shipping if you pay for it.

I'm offering them up to the list first though if there isn't any
interest here will possibly offer on eBay or if someone knows other
good places to list systems please let me know. Would like to move
them out. Will also have several other systems for sale/trade/haul
away very soon as I am clearing out a lot of stuff.

Best regards,
David Williams

Re: Apollo Guidance Computer Article

[Chris Hanson via cctalk]

You might want to be explicit that the article is about the Apollo Guidance 
Computer, not about Apollo Computer the workstation manufacturer.

  — Chris

Re: Two AT&T Unix PC/3B1/7300 systems available

[Bill Degnan via cctalk]

where are you?  I am interested if you're near to Philadelphia --
Washington DC corridor
Bill Deg

On Tue, Jun 18, 2019 at 2:10 PM David Williams via cctalk <
cctalk@classiccmp.org> wrote:

> I have two AT&T Unix PCs that I am offering up to interested parties as
> described below:
>
> 1) AT&T Unix PC with the standard 67 MB HDD, this is the base system and
> three button mouse. The right arrow key on the keyboard is broken but
> the key cap is still included. This unit is also missing the keyboard
> cable though I should have it around somewhere and so it might turn up
> at some point at which time I'd send it along. It has been several years
> since this was last powered on and I don't recall if there are any
> passwords or what they might be so you may have to hack your way into
> the system. Had UNIX System V installed but don't recall what other
> software may be installed as well. Sold as is.
>
> 2) AT&T Unix PC. This unit comes in the original box, with keyboard and
> mouse and the following documentation:
> a) AT&T Unix PC Owner's Manual
> b) AT&T Unix PC Getting Started Manual
> c) AT&T Unix System V Utilities Manual
> d) AT&T Unix PC Communications Management Manual
> e) AT&T Unit PC System Software
> As with the above system, it has been a while since it was last powered
> up and I don't recall if there were any passwords or what so may need to
> hack into the OS. Also not sure what software was installed besides the
> OS. Sold as is.
>
> I believe I may have some more documentation around but haven't located
> it yet, if I do discover it I will offer to send it along to anyone who
> picks up these systems.
>
> If you need any other info please let me know and I'll send it along.
> Will entertain any offers at all and prefer local pickup but I am fine
> with packing and shipping if you pay for it.
>
> I'm offering them up to the list first though if there isn't any
> interest here will possibly offer on eBay or if someone knows other good
> places to list systems please let me know. Would like to move them out.
> Will also have several other systems for sale/trade/haul away very soon
> as I am clearing out a lot of stuff.
>
> Best regards,
> David Williams
>

Two AT&T Unix PC/3B1/7300 systems available

[David Williams via cctalk]

I have two AT&T Unix PCs that I am offering up to interested parties as 
described below:


1) AT&T Unix PC with the standard 67 MB HDD, this is the base system and 
three button mouse. The right arrow key on the keyboard is broken but 
the key cap is still included. This unit is also missing the keyboard 
cable though I should have it around somewhere and so it might turn up 
at some point at which time I'd send it along. It has been several years 
since this was last powered on and I don't recall if there are any 
passwords or what they might be so you may have to hack your way into 
the system. Had UNIX System V installed but don't recall what other 
software may be installed as well. Sold as is.


2) AT&T Unix PC. This unit comes in the original box, with keyboard and 
mouse and the following documentation:

   a) AT&T Unix PC Owner's Manual
   b) AT&T Unix PC Getting Started Manual
   c) AT&T Unix System V Utilities Manual
   d) AT&T Unix PC Communications Management Manual
   e) AT&T Unit PC System Software
As with the above system, it has been a while since it was last powered 
up and I don't recall if there were any passwords or what so may need to 
hack into the OS. Also not sure what software was installed besides the 
OS. Sold as is.


I believe I may have some more documentation around but haven't located 
it yet, if I do discover it I will offer to send it along to anyone who 
picks up these systems.


If you need any other info please let me know and I'll send it along. 
Will entertain any offers at all and prefer local pickup but I am fine 
with packing and shipping if you pay for it.


I'm offering them up to the list first though if there isn't any 
interest here will possibly offer on eBay or if someone knows other good 
places to list systems please let me know. Would like to move them out. 
Will also have several other systems for sale/trade/haul away very soon 
as I am clearing out a lot of stuff.


Best regards,
David Williams

Re: DEC KA650 VAX memory troubleshooting (video)

[Antonio Carlini via cctalk]

On 18/06/2019 01:56, Joe Zatarski via cctech wrote:

OK, so where should a thing like this go: https://pastebin.com/taQwaTV6

Anybody got a decent place to upload that? it's my notes on the MS650-AA,
and more generally the KA650 CMCTL memory subsystem.

Includes my theory of operation of the CMCTL, the organization of memory,
the ECC equations (kinda, the info is there to derive them), explanations
of the signals on the memory bus, and most importantly, a list of which
bits and RAM regions correspond to the 312 DRAMs on the board.



Sounds ideal for the Computer History Wiki: 
http://gunkies.org/wiki/Main_Page.



Antonio



--
Antonio Carlini
anto...@acarlini.com

Re: Missing posts in archive and no Subject: line

[Eric Christopherson via cctalk]

On Mon, Jun 17, 2019 at 1:19 PM Noel Chiappa via cctalk <
cctalk@classiccmp.org> wrote:

> So, a couple of posts yesterday did not show up in the date archive:
>
>   http://www.classiccmp.org/pipermail/cctalk/2019-June/date.html
>
> which is how I read the list. They are:
>
>   Software for Fairy YL-23 IC tester wanted
>   http://www.classiccmp.org/pipermail/cctalk/2019-June/048094.html
>   http://www.classiccmp.org/pipermail/cctalk/2019-June/048096.html
>
>   DEC KA650 VAX memory troubleshooting (video)
>   http://www.classiccmp.org/pipermail/cctalk/2019-June/048095.html
>   http://www.classiccmp.org/pipermail/cctalk/2019-June/048097.html
>
> I'm not sure what happened, but I note the next post had no Subject: line,
> and I'm wondering if that caused it. So best to make sure your posts have
> Subject: lines.
>
> Noel
>

List admin:

Please note also that the reply to the message headed "No subject" (which
Noel mentioned) actually seems to have a blank subject, as a result of
which it doesn't seem to be possible to even view it (since there's no link
to click)!  See "Next message:" at the bottom of
http://www.classiccmp.org/pipermail/cctalk/2019-June/048087.html.

-- 
Eric Christopherson

Re: DEC KA650 VAX memory troubleshooting (video)

[Noel Chiappa via cctalk]

> From: Joe Zatarski

> OK, so where should a thing like this go: ... Anybody got a decent
> place to upload that?

As always, the CHWiki is available for any vintage computer stuff. I can
set up an account for anyone here who wants one.

I have posted similar information for PDP-11 memory, e.g. here:

  http://gunkies.org/wiki/QBUS_memories#Diagnosing_DRAM_memory_failures
  http://gunkies.org/wiki/MSV11-J#Technical_information

which seems to be a direct analogue of the stuff you have.

Noel

Re: Apollo Computer Article

[Will Cooke via cctalk]

> On June 18, 2019 at 10:24 AM Noel Chiappa via cctalk  
> wrote:
> 
> > From: Jim Brain
> > Probably too light for folks in here, but maybe some will find some > 
> > interest
> 
> Good high-level view of the importance of the AGC work.
> 
> For those who want technical details, there's a Web-site (I can dig up the
> URL if anyone wants) about the recovery of the software, and running it
> under and emulator; and now there are people doing the hardware too (e.g.
> the guy Al pointed at).
> 
>  Noel

This site has TONS of stuff, including (links to) much original documentation.  
There are also copies of actual flight software that can be run on the 
simulator.
https://www.ibiblio.org/apollo/

Re: Apollo Computer Article

[Noel Chiappa via cctalk]

> From: Jim Brain

> Probably too light for folks in here, but maybe some will find some
> interest

Good high-level view of the importance of the AGC work.

For those who want technical details, there's a Web-site (I can dig up the
URL if anyone wants) about the recovery of the software, and running it
under and emulator; and now there are people doing the hardware too (e.g.
the guy Al pointed at).

Noel

Re: Missing posts in archive and no Subject: line

[John H. Reinhardt via cctalk]

On 6/17/2019 1:18 PM, Noel Chiappa via cctalk wrote:

So, a couple of posts yesterday did not show up in the date archive:

   http://www.classiccmp.org/pipermail/cctalk/2019-June/date.html

which is how I read the list. They are:


And now I know why your posts always break the threading in Thunderbird... I'd 
wondered how it happened. ;)

Noel


--
John H. Reinhardt

Re: Apollo Computer Article

[Al Kossow via cctalk]

this is a bit more heavyweight
http://rescue1130.blogspot.com/2019/06/erasable-core-memory-ram-of-apollo.html

On 6/17/19 5:01 PM, Jim Brain via cctalk wrote:
> Probably too light for folks in here, but maybe some will find some interest 
> (apologies if
> 
> https://www.fastcompany.com/90362562/this-computer-changed-world-youve-never-heard-about-it
> 
>