Re: MSV11-J engineering info

[Glen Slick via cctalk]

On Mon, Jul 2, 2018 at 7:14 PM, Noel Chiappa via cctalk
 wrote:
> Hi, I'm looking for engineering info on the MSV11-J. I was unable to find any
> prints online, or even a technical manual. (I have the User Manual, but it 
> doesn't
> have much detail.)

> The main issue I'm after is working out which bits go into which chips.  I
> have some other QBUS memory boards with no documentation where I created the
> mapping by just pulling chips, e.g.:

> I'm not sure it's going to be possible to work it out from looking at board
> traces, since the MSV11-J is ECC memory, and I expect all the data lines just
> disappear into the two huge gate array chips.
>

There are 88 41256 256Kx1 DRAMs on a 2MB MSV11-J. Each 512KB bank has
22 256Kx1 DRAMs organized as 16 data bits plus 6 ECC bits.

If someone was sufficiently motivated I suppose they could probe each
of the 88 DRAMs while writing various bit patterns of data to various
memory locations and work out the mapping that way. From a brief look
at the manual it might be possible to use diagnostic modes to write
specific ECC bit patterns and work out the ECC bit mappings as well.
Might be very tedious, so might need lots of motivation.

I'm not sure which would be more work, probing one or a small number
of DRAMs at a time, or hooking up an old school large channel count
logic analyzer to probe all 88 DRAMs at the same time. (You can get
around 200 data channels with a couple of HP 16550A modules or three
HP 16555A modules in an HP 16500 or 16700 series mainframe).

If I ever get really bored some day maybe I'd take a look and try to
see just how tedious it might be.

Re: Looking for North star software

[Fred Cisin via cctalk]

BUT, the Horizon can also manage 8" drives (SSSD soft-sector CP/M
standard!) with appropriate controller, or use other S100 FDC boards.


On Mon, 2 Jul 2018, allison via cctalk wrote:

Really? not any of the MDS (SD or DD) controllers as they only know hard
sector.    A Soft sector controller with rom
on board then the situation changes.  Plan B is  a CPU with local eprom
and use that as the system monitor to boot
stuff to disk.
The standard NS controllers have only a small rom enough to boot a NS SD
or DD floppy using their controller
where the roms are.
. . . 
 Â Â  The older

of mine runs a MDC4 765 based soft sector
controller and is an active highly modded CPM system.  The other is
vanilla and tucked away.


Really, I just assumed that you could install a non-NorthStar disk 
controller, in addition to the stock one, or maybe instead, in order to 
be able to do soft-sector.

Re: Old WANG terminal keyboard

[Derek Newland via cctalk]

Appears to be from a Wang VM7681:
https://i.pinimg.com/originals/a5/d1/84/a5d184de569a605cf8542a57eed3a443.jpg

On Mon, Jul 2, 2018 at 5:28 PM Electronics Plus via cctalk <
cctalk@classiccmp.org> wrote:

> No part number or date is visible. Complete, but not cleaned or tested.
>
> I have no idea what it went to.
>
> https://www.elecshopper.com/old-wang-terminal-keyboard.html
>
>
>
>
>
> Cindy Croxton
>
> Electronics Plus
>
> 1613 Water Street
>
> Kerrville, TX 78028
>
> 830-370-3239 cell
>
> sa...@elecplus.com
>
>
>
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>


-- 
*Derek Newland* | Save the Machine  | (828)
234-4731 | de...@savethemachine.org

MSV11-J engineering info

[Noel Chiappa via cctalk]

Hi, I'm looking for engineering info on the MSV11-J. I was unable to find any
prints online, or even a technical manual. (I have the User Manual, but it 
doesn't
have much detail.)

The main issue I'm after is working out which bits go into which chips.  I
have some other QBUS memory boards with no documentation where I created the
mapping by just pulling chips, e.g.:

  http://gunkies.org/wiki/Q-RAM_11

but, alas, on all the MSV11-J's I've seen, the DRAM chips are not socketed -
unlike QBUS memory boards by almost all the other manufacturers (e.g. National
Semiconductor, Camintonn, etc - in fact, pretty much everyone _except_ DEC).

Anyway, if anyone _does_ have an MSV11-J with the chips in sockets, I'd
_really_ appreciate hearing from them!

I'm not sure it's going to be possible to work it out from looking at board
traces, since the MSV11-J is ECC memory, and I expect all the data lines just
disappear into the two huge gate array chips.

Anyway, I would appreciate hearing from anyone with anything on the MSV11-J.

Noel

Re: Looking for North star software

[allison via cctalk]

On 07/02/2018 08:48 PM, Fred Cisin via cctalk wrote:
> On Tue, 3 Jul 2018, dwight wrote:
>> I was thinking someone has already done this. If no, as you say, it
>> is not an impossible task.
>
> It can be done.  It has been done.  It is not the easiest.
> A friend did it, but he died 4 years ago, and his stuff is GONE.
> There should be GOOGLE reachable stories of how people have done it,
> and some .ASM or .HEX files of useful utilities.
>
>> The TSS/B is suppose to be their scientific package. It at least has
>> BASIC in it. I have another disk marked CP/M in the same box. I
>> should be able to put something together under CP/M.
>
> If you have CP/M, in a bootable form, then the utilities that come
> with CP/M (PIP, LOAD, SAVE, . . . ) can be coerced into creating a
> bootstrapping program to bring stuff over, to bring over more
> versatile utilities, etc.   PIP.COM, alas, is not an internal command.
> If you use a PC as your terminal, you can come up with ways to move code.
> You can PIP from the console.   (to bring over a .ASM or .HEX file)
>
PIP can be patched to be a modem handler.

>> It is a North Star Horizon. There seems to be some images out there
>> so I don't know how they are being captured.
>
> The images are probably created on a NorthStar.
>
> There exist some rather rare hardware boards for PC to read/write hard
> sector.  Not easily available.
> It may be possible to use a flux-transition board that has access to
> the index signal and write code to do it.
> BUT, the Horizon can also manage 8" drives (SSSD soft-sector CP/M
> standard!) with appropriate controller, or use other S100 FDC boards.

Really? not any of the MDS (SD or DD) controllers as they only know hard
sector.    A Soft sector controller with rom
on board then the situation changes.  Plan B is  a CPU with local eprom
and use that as the system monitor to boot
stuff to disk.

The standard NS controllers have only a small rom enough to boot a NS SD
or DD floppy using their controller
where the roms are.

>
> Once the CP/M system is up, there are utilities that have been written
> for it (some assembly required), for serial port transfer.
>

IF you hae CP/M and bootable with Asm, DDt and PIP life gets real easy. 
Check Dave Dunfields site for
a s100/NS emulator that runs images (NS dos, CP/M and more) that can be
serially down loaded from
the emulator though the PC.

> I have no idea what's available for NorthStar-DOS, but there is
> probably something around.
>
There is a lot of site with software , your friend google.   I already
mentioned Dave donefields old computers.
Harte has some stuff too.  NS* systems were popular.

>
> I think that the original drives of the Horizon were Shugart SA400,
> but Tandon TM100-x should work just fine.
>

Either one and many others can be subbed in.

I have two NS* Horizons, one I assembled late 77 and the other nearly 30
years ago.  Both work.  Biggest issue
is media as 10 hole hard sector stuff is just plain scarce.    The older
of mine runs a MDC4 765 based soft sector
controller and is an active highly modded CPM system.  The other is
vanilla and tucked away.

Allison
>
> Good luck,
> -- 
> Grumpy Ol' Fred ci...@xenosoft.com

Re: Looking for North star software

[allison via cctalk]

There is also NS* DOS very easy to find.  Basic DOS has the os, several
Monitors, and Basic.
People have it in IMD and a few other forms but making a disk is the
real challenge as
NO PC can do the hard sector.  There are two formats all 5.25" SD
10sectors of 256byts
and 35 tracks.  The other is 10sectors of 512byts and 35/40/and two
sided flavors.  They
are all 10 sector(holes) and hard sector.

Make sure it works with NS-DOS. as thats easiest to replace if the
controller is munged.

Allison


On 07/02/2018 08:16 PM, dwight via cctalk wrote:
> I was thinking someone has already done this. If no, as you say, it is not an 
> impossible task.
>
> The TSS/B is suppose to be their scientific package. It at least has BASIC in 
> it. I have another disk marked CP/M in the same box. I should be able to put 
> something together under CP/M.
>
> It is a North Star Horizon. There seems to be some images out there so I 
> don't know how they are being captured.
>
> Dwight
>
>
> 
> From: cctalk  on behalf of Fred Cisin via 
> cctalk 
> Sent: Monday, July 2, 2018 3:27:09 PM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: Looking for North star software
>
> On Mon, 2 Jul 2018, dwight via cctalk wrote:
>> I have a machine that I'm just now bringing up. I have some boot
>> software but it is TSS/A that is the accounting multi-user package. I'd
>> really like the TSS/B floppies instead. I'd settle for images.
> Sounds like fun!
>
> What model Northstar?
>
> Once you get some images, have you worked out a way to get the images onto
> hard-sector disks?
>
> AFTER you boot the machine, with some minimal programs, you can transfer
> data into the machine through serial port.

Re: Looking for North star software

[Fred Cisin via cctalk]

On Tue, 3 Jul 2018, dwight wrote:
I was thinking someone has already done this. If no, as you say, it is 
not an impossible task.


It can be done.  It has been done.  It is not the easiest.
A friend did it, but he died 4 years ago, and his stuff is GONE.
There should be GOOGLE reachable stories of how people have done it, and 
some .ASM or .HEX files of useful utilities.


The TSS/B is suppose to be their scientific package. It at least has 
BASIC in it. I have another disk marked CP/M in the same box. I should 
be able to put something together under CP/M.


If you have CP/M, in a bootable form, then the utilities that come with 
CP/M (PIP, LOAD, SAVE, . . . ) can be coerced into creating a 
bootstrapping program to bring stuff over, to bring over more versatile 
utilities, etc.   PIP.COM, alas, is not an internal command.

If you use a PC as your terminal, you can come up with ways to move code.
You can PIP from the console.   (to bring over a .ASM or .HEX file)

It is a North Star Horizon. There seems to be some images out there so I 
don't know how they are being captured.


The images are probably created on a NorthStar.

There exist some rather rare hardware boards for PC to read/write hard 
sector.  Not easily available.
It may be possible to use a flux-transition board that has access to the 
index signal and write code to do it.
BUT, the Horizon can also manage 8" drives (SSSD soft-sector CP/M 
standard!) with appropriate controller, or use other S100 FDC boards.
Once the CP/M system is up, there are utilities that have been written for 
it (some assembly required), for serial port transfer.


I have no idea what's available for NorthStar-DOS, but there is probably 
something around.



I think that the original drives of the Horizon were Shugart SA400, but 
Tandon TM100-x should work just fine.



Good luck,
--
Grumpy Ol' Fred ci...@xenosoft.com

Re: Looking for North star software

[systems_glitch via cctalk]

Mike Douglas has a bunch of North Star utilities that you can use to "bare
metal bootstrap" disks:

http://deramp.com/northstar.html

Unless you have a stockpile of hard-sector disks, you probably also want
his Virtual Sector Generator board:

http://deramp.com/vsg.html

Thanks,
Jonathan

On Mon, Jul 2, 2018 at 8:16 PM, dwight via cctalk 
wrote:

> I was thinking someone has already done this. If no, as you say, it is not
> an impossible task.
>
> The TSS/B is suppose to be their scientific package. It at least has BASIC
> in it. I have another disk marked CP/M in the same box. I should be able to
> put something together under CP/M.
>
> It is a North Star Horizon. There seems to be some images out there so I
> don't know how they are being captured.
>
> Dwight
>
>
> 
> From: cctalk  on behalf of Fred Cisin via
> cctalk 
> Sent: Monday, July 2, 2018 3:27:09 PM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: Looking for North star software
>
> On Mon, 2 Jul 2018, dwight via cctalk wrote:
> > I have a machine that I'm just now bringing up. I have some boot
> > software but it is TSS/A that is the accounting multi-user package. I'd
> > really like the TSS/B floppies instead. I'd settle for images.
>
> Sounds like fun!
>
> What model Northstar?
>
> Once you get some images, have you worked out a way to get the images onto
> hard-sector disks?
>
> AFTER you boot the machine, with some minimal programs, you can transfer
> data into the machine through serial port.
>

Re: Looking for North star software

[dwight via cctalk]

I was thinking someone has already done this. If no, as you say, it is not an 
impossible task.

The TSS/B is suppose to be their scientific package. It at least has BASIC in 
it. I have another disk marked CP/M in the same box. I should be able to put 
something together under CP/M.

It is a North Star Horizon. There seems to be some images out there so I don't 
know how they are being captured.

Dwight



From: cctalk  on behalf of Fred Cisin via cctalk 

Sent: Monday, July 2, 2018 3:27:09 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Looking for North star software

On Mon, 2 Jul 2018, dwight via cctalk wrote:
> I have a machine that I'm just now bringing up. I have some boot
> software but it is TSS/A that is the accounting multi-user package. I'd
> really like the TSS/B floppies instead. I'd settle for images.

Sounds like fun!

What model Northstar?

Once you get some images, have you worked out a way to get the images onto
hard-sector disks?

AFTER you boot the machine, with some minimal programs, you can transfer
data into the machine through serial port.

Re: Preserved LGP-30

[js--- via cctalk]

On 7/2/2018 5:43 PM, Fred Cisin via 
cctalk wrote:
The Moravian Galley in Brno has an 
exhibition on "Computer Art 1968".
The only actual computer is a very 
well-preserved German LGP-30. I
took a few photos of it 
yesterday... and got told off for 
handling the

paper tape,
Asking people not to touch museum 
exhibits makes sense to me.
On Mon, 2 Jul 2018, js--- via cctalk 
wrote:
Seriously!  Liam, don't you know that 
handling paper with your hands 
transfers oils to it and hastens its 
decay?  This is why gloves are worn 
to handle old paper artifacts.


Seriously!  Don't they know that if it 
is within reach, then the museum 
attendees will reach over and handle?

velvet ropes and glass cases 
Muir Woods is now a TREE MUSEUM!, with 
paved fenced walkways to keep people 
from touching the ancient redwoods.  
And they charge more than a dollar and 
a half just to see 'em.


How can you balance the hands-on 
aspect that is so ESSENTIAL to the 
experience?




Yes, but Liam is no ordinary museum 
attendee - he should have the experience
to know better  :-D   Fred, I guess the 
rarity and cost of restoration of
something determines whether it can be 
presented for hands-on experiences
or not, as well as taking into account 
what the goals of the particular
museum are.  Museums are not under any 
particular obligation to have
hands-on exhibits, as that option only 
raises their operating costs.
Museums are typically show & tell... not 
show, share, and tell.
Those who must have the full experience, 
buy their own examples.


- J.

Re: Preserved LGP-30

[Fred Cisin via cctalk]

The Moravian Galley in Brno has an exhibition on "Computer Art 1968".
The only actual computer is a very well-preserved German LGP-30. I
took a few photos of it yesterday... and got told off for handling the
paper tape,

Asking people not to touch museum exhibits makes sense to me.

On Mon, 2 Jul 2018, js--- via cctalk wrote:
Seriously!  Liam, don't you know that handling paper with your hands 
transfers oils to it and hastens its decay?  This is why gloves are worn to 
handle old paper artifacts.


Seriously!  Don't they know that if it is within reach, then the museum 
attendees will reach over and handle?

velvet ropes and glass cases   
Muir Woods is now a TREE MUSEUM!, with paved fenced walkways to keep 
people from touching the ancient redwoods.  And they charge more than a dollar 
and a half just to see 'em.


How can you balance the hands-on aspect that is so ESSENTIAL to the 
experience?

Re: Preserved LGP-30

[js--- via cctalk]

On 7/2/2018 7:51 AM, Paul Koning via 
cctalk wrote:



On Jul 1, 2018, at 10:29 AM, Liam Proven via cctalk  
wrote:

The Moravian Galley in Brno has an exhibition on "Computer Art 1968".
The only actual computer is a very well-preserved German LGP-30. I
took a few photos of it yesterday... and got told off for handling the
paper tape,

Asking people not to touch museum exhibits makes sense to me.


Seriously!  Liam, don't you know that 
handling paper with your hands transfers 
oils to it and hastens its decay?  This 
is why gloves are worn to handle old 
paper artifacts.


- J.

Re: Looking for North star software

[Fred Cisin via cctalk]

On Mon, 2 Jul 2018, dwight via cctalk wrote:
I have a machine that I'm just now bringing up. I have some boot 
software but it is TSS/A that is the accounting multi-user package. I'd 
really like the TSS/B floppies instead. I'd settle for images.


Sounds like fun!

What model Northstar?

Once you get some images, have you worked out a way to get the images onto 
hard-sector disks?


AFTER you boot the machine, with some minimal programs, you can transfer 
data into the machine through serial port.

Old WANG terminal keyboard

[Electronics Plus via cctalk]

No part number or date is visible. Complete, but not cleaned or tested.

I have no idea what it went to.

https://www.elecshopper.com/old-wang-terminal-keyboard.html

 

 

Cindy Croxton

Electronics Plus

1613 Water Street

Kerrville, TX 78028

830-370-3239 cell

sa...@elecplus.com

 



---
This email has been checked for viruses by Avast antivirus software.
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Re: VT100 keyboards for parts/repair

[Carlo Pisani via cctalk]

they went so fast because you are the best :D

p.s.
is there a way to extract your auctions? In XML or something?
I'd love to promote them in our new Bazaar

it would be cool to have them properly indexed by the new engine I am working at




2018-07-02 22:54 GMT+02:00 Electronics Plus via cctalk :
>
>
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Electronics
> Plus via cctalk
> Sent: Monday, July 02, 2018 2:58 PM
> To: 'General Discussion: On-Topic and Off-Topic Posts'
> Subject: VT100 keyboards for parts/repair
>
> I have 2 in stock.
>
> https://www.elecshopper.com/dec-vt100-keyboard-for-parts-or-repair.html
>
>
>
>  Both are sold now; that was fast!
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>

XpressWare v8.1 or above (software for Tektronix X11 terminals)

[Carlo Pisani via cctalk]

hi,
In 1990s Tektronix produced digital video X terminal and introduced
X server software based on VxWorks v5 (Windriver). Later they
introduced a new line of terminals, at some point a company called NCD
bought the Tektronix X11-terminals division and started to produce
their own line, called NCD-terminals with a software called
"NCD-bridge"

Anyway, both the 200-series and the 400-series of the Tektronix X11
terminals boot from a directory on a server via NFS or TFTP, either
way, you need to create a directory for the terminal to boot from, and
install a number of files.

These files are provided as "Tektronix XpressWare version 8.0 (or
later)". The 200-series can bootstrap from v7 ( one of the member of
my team owns an original CD), but the 200-series needs the v8 or later
(we don't have).

Unofficially, you might look for NCD, the Company who bought the
X-terminals division from Tektronix; they had (note the past tense)
some software in the form of patches, accessible by anonymous ftp.
There aren't any complete releases, but there were archives which
contains much that is useful to be found in the ftp, in particular
patches containing bits of version 8.1 of XpressWare; enough to form
the basis of a working installation.

Unfortunately, the archive is gone, no more available.

Let me know if you have the software or if you know where/how to find
it, otherwise, X11-terminals like X400 can't be functional.


Thanks

Motorola MC68882 user manual (paper copy)

[Carlo Pisani via cctalk]

hi
I am looking for a paper copy of the Motorola MC68882 user manual
(it's a floating point unit)

let me know if you have for sale

thanks

downthebunker bazaar, new domain

[Carlo Pisani via cctalk]

we have recently bought a domain
http://www.downthebunker.xyz
and a subdomain
http://deals.downthebunker.xyz/

you can reach us there :)

I am also working on a new engine, and probably we will also add HTTPS

thanks

Looking for North star software

[dwight via cctalk]

I have a machine that I'm just now bringing up. I have some boot software but 
it is TSS/A that is the accounting multi-user package. I'd really like the 
TSS/B floppies instead. I'd settle for images.

Dwight

RE: VT100 keyboards for parts/repair

[Electronics Plus via cctalk]

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Electronics
Plus via cctalk
Sent: Monday, July 02, 2018 2:58 PM
To: 'General Discussion: On-Topic and Off-Topic Posts'
Subject: VT100 keyboards for parts/repair

I have 2 in stock.

https://www.elecshopper.com/dec-vt100-keyboard-for-parts-or-repair.html

 

 Both are sold now; that was fast!


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

VT100 keyboards for parts/repair

[Electronics Plus via cctalk]

I have 2 in stock.

https://www.elecshopper.com/dec-vt100-keyboard-for-parts-or-repair.html

 

 

Cindy Croxton

Electronics Plus

1613 Water Street

Kerrville, TX 78028

830-370-3239 cell

sa...@elecplus.com

 



---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

Re: DEC FPJ11-AA

[Pete Turnbull via cctalk]

On 02/07/2018 14:17, Bill Gunshannon via cctalk wrote:

On 07/02/2018 08:34 AM, Pete Turnbull via cctalk wrote:

Bill would want the -JD (2MB) version
(the -JE version is 4MB so too big).



Or a pair of the 1 meg ore did they go away before the 11/93 came out?


My oopsie; the MSV11-J is either 1MB or 2MB.  I was thinking of MSV11-Q 
(which is QBus only).


--
Pete
Pete Turnbull

Re: DEC FPJ11-AA

[Jules Richardson via cctalk]

On 07/01/2018 03:00 AM, Paul Birkel via cctalk wrote:

https://www.ebay.com/itm/DEC-PDP-11-84-M8190-AE-Module-FPJ11-AA/113112634277

IMO a really good deal on an 18 Mhz FPJ11-AA.  Those don't seem to come up
much .


Hmm, untested and no returns... is that typical of sellers (and do buyers 
generally take the line that "it's DEC and built like a tank, so it's 
probably OK" :-) ?

Re: DEC FPJ11-AA

[Paul Anderson via cctalk]

In most of the earlier MOS as in the MSV11-DD the first letter after would
indicate memory size, and the second would indicate who made the chips.

Paul

On Mon, Jul 2, 2018 at 8:31 AM, Noel Chiappa via cctalk <
cctalk@classiccmp.org> wrote:

> > From: Pete Turnbull
>
> > Bill would want the -JD (2MB) version (the -JE version is 4MB so too
> > big).
>
> Err, the -JD is 1MB, and the -JE is 2MB (see e.g. EK-MSV1J-UG-001, pg.
> 1-3).
>
> Noel
>

Re: DEC FPJ11-AA

[Noel Chiappa via cctalk]

> From: Pete Turnbull

> Bill would want the -JD (2MB) version (the -JE version is 4MB so too
> big).

Err, the -JD is 1MB, and the -JE is 2MB (see e.g. EK-MSV1J-UG-001, pg. 1-3).

Noel

Re: DEC FPJ11-AA

[Bill Gunshannon via cctalk]

On 07/02/2018 08:34 AM, Pete Turnbull via cctalk wrote:
> On 02/07/2018 03:38, Noel Chiappa via cctalk wrote:
>>  > From: Bill Gunshannon
>>
>>  > Anybody have any PMI memory modules they might let go for less 
>> than my
>>  > first born male child?
>>
>> The DEC PMI memories are the MSV11-J and (I think) the MSV11-R. The 
>> latter is
>> rare, but the -J's can be found.
>
> Correct, but bear in mind that there are 4 versions of the MSV11-J; 
> the -JB and -JC versions have different ASICs and don't support QBus 
> CPUs. Specifically, they don't support block-mode transfers and don't 
> work properly even as PMI memory except in an 11/84, while the -JE and 
> JD versions support everything.  Bill would want the -JD (2MB) version 
> (the -JE version is 4MB so too big).
>

Or a pair of the 1 meg ore did they go away before the 11/93 came out?

bill

Re: DEC FPJ11-AA

[Bill Gunshannon via cctalk]

On 07/02/2018 08:26 AM, Pete Turnbull via cctalk wrote:
> On 01/07/2018 18:14, Bill Gunshannon via cctalk wrote:
>
>> Speaking of PMI  Anybody have any PMI memory modules they
>> might let go for less than my first born male child?  I have one
>> 11/93 with 2 Meg and would love to bring it up to full memory.
>
> If you really mean 11/93 (as opposed to, say, 11/83), it would 
> normally only use its on-board memory.  It does work with PMI memory, 
> but might it not be easier to just add the extra ICs on the CPU board?
>

It's an 11/93 all right.  It has 2 meg on the board.  The chips are 
surface mount
and even if I could find some I could trust were good (all I saw with a 
quick search
were "refurbished" which means taken out of something else!) I am not 
sure I would
want to risk working on what I consider a rare find and my best PDP-11.  
Everything
I have found so far says PMI works fine so I would prefer to find a 2meg 
or even a
pair of 1 meg PMI boards.  Not looking at commercial resellers because I 
have dealt
with them in the past and know I can't afford them.

bill

Re: Preserved LGP-30

[Paul Koning via cctalk]

> On Jul 1, 2018, at 10:29 AM, Liam Proven via cctalk  
> wrote:
> 
> The Moravian Galley in Brno has an exhibition on "Computer Art 1968".
> The only actual computer is a very well-preserved German LGP-30. I
> took a few photos of it yesterday... and got told off for handling the
> paper tape,

Asking people not to touch museum exhibits makes sense to me.

> https://www.flickr.com/photos/lproven/albums/72157696907302261

Neat.  German labels on the controls...

paul

Re: DEC FPJ11-AA

[Pete Turnbull via cctalk]

On 02/07/2018 03:38, Noel Chiappa via cctalk wrote:

 > From: Bill Gunshannon

 > Anybody have any PMI memory modules they might let go for less than my
 > first born male child?

The DEC PMI memories are the MSV11-J and (I think) the MSV11-R. The latter is
rare, but the -J's can be found.


Correct, but bear in mind that there are 4 versions of the MSV11-J; the 
-JB and -JC versions have different ASICs and don't support QBus CPUs. 
Specifically, they don't support block-mode transfers and don't work 
properly even as PMI memory except in an 11/84, while the -JE and JD 
versions support everything.  Bill would want the -JD (2MB) version (the 
-JE version is 4MB so too big).


--
Pete
Pete Turnbull

Re: DEC FPJ11-AA

[Pete Turnbull via cctalk]

On 01/07/2018 18:14, Bill Gunshannon via cctalk wrote:


Speaking of PMI  Anybody have any PMI memory modules they
might let go for less than my first born male child?  I have one
11/93 with 2 Meg and would love to bring it up to full memory.


If you really mean 11/93 (as opposed to, say, 11/83), it would normally 
only use its on-board memory.  It does work with PMI memory, but might 
it not be easier to just add the extra ICs on the CPU board?


--
Pete
Pete Turnbull

simh pdp8 question

[Jonathan Engwall via cctalk]

My pdp8 seems to have very space. I want to try fortran iv. I can't even
compile hello world without getting: $SY