So I'm working my way (more slowly than I probably should be) through my
systems, ditching ancient on-board batteries before they leak...
In the case of the Mac SE's, are there any critical settings which I should
make a note of before removing the on-board battery? Should I expect any
issues trying to run the machines without? (I'm not inclined to replace
batteries unless I have to, just so I don't have to worry about replacement
again in x years time)
cheers
Jules
>On 2014-10-26 3:07 PM, Toby Thain wrote:
>>* On 21/10/14 7:38 AM, Noel Chiappa wrote:
*>>>* > From: Toby Thain
*>>>>>>* > Looking to see what the internal self-test returns as an error
*>>>* code
*>>>* > (that can be done with console ODT, it doesn't need a program) is
*>>>* > probably the first step in diagnosing.
*>>>*...
*>>* OK, after powerup, the bits of the VAR register (e/w/p 2000192c) are
*>>* D800, i.e. the test result bits VAR12:10 are 1,1,0 - meaning RAM test
*>>* failed.
*>
>Hi all,
>
>As an update to this project, I can report that the DELQA has been
>repaired with four new static RAM chips, and now the MicroVAX II's
>network is fully working (including netboot).
>
>Credit due to Joe Zatarski (joe_z) who did a beautiful job of
>desoldering and putting sockets in for the four RAM chips.
>
>--Toby
Glad to have helped :)
Joe Zatarski
>>>>* I must be doing something wrong running the test manually, though -
*>>>>>>>* d/w/p 2000192c 2000
*>>>>* Just leaves 2000 in the VAR register, permanently.
*>>>>* --Toby
*>>>>>>>>>>* Noel
*>>>>>>>
A very interesting story.
Now we do need detailed information, schematics, maintenance procedures and software for C1,C2,C38 as well for SPP systems. My SPP1600XA, which I used e.g. to heat my cellar stopped operation due to breaking the voltage limit using psu_util.
@Camiel: would you like to swap one of your C1 for an X or S-Class? My S-Class is using 48 PA-Risc processors.
Andreas
> Am 07.11.2016 um 14:50 schrieb steve wallach <steve.wallach at gmail.com>:
>
> all correct
>
> actually the story goes as follows
>
> .he had his sabattical year coming. however, he would still go into his office to use the convex.
>
> .so i offered him a FREE return C1 (returned after an upgrade to a C2). he would have to pay for the maintenance and pay for the electrical system needed in his basement.
>
> .prof jameson is brilliant and people all over the world would come to visit him. during his sabattical they would come to his house and he delighted in showing them his OWN SUPERCOMPUTER in his basement. also after his sabbtaical finished.
>
> .we sold several systems based on his use of the convex.
>
> .when he presented papers, he always said, ?i ran these simulations on my own convex supercomputer in my basement?. we got an enormous amount of press and good will.
>
>
>
> ---
> + Ex-Convex Mailing List, list at ex-convex.org, http://www.ex-convex.org/
> + To unsubscribe, send an email to leave-ex-convex at ex-convex.org
> + To subscribe, send an email to join-ex-convex at ex-convex.org
Folks,
I think I know the answer to this before I even ask, and that answer will be
'got a schematic' to which the answer's 'no and I doubt one exists any more'
but...
My recent Executel addition has a 5" screen with associated analogue board
that seems to be powered from a display chip I can't find any info on, and
at least one of the adjustment potentiometers has suffered metal fatigue and
broken:
http://www.binarydinosaurs.co.uk/STCExecutelScreenPot.jpghttp://www.binarydinosaurs.co.uk/STCExecutelAnalogueBoard.jpghttp://www.binarydinosaurs.co.uk/STCExecutelDisplayChip.jpg
I've replaced it with a seemingly common 10K modern part that I had in my
spares box but it's unknown whether the display worked at all prior to it
being put in very damp storage, also the rating of the failed pot isn't
known but the capacitor next to it is 50V.
I've also removed, checked and replaced out of spec capacitors, one of them
was a 680nF 50V radial. I could only find a 63V PET version on cpc's website
and did much reading on differing capacitor types, concluding that it SHOULD
be OK.
Power supply is known good because it's one of my working ones, the original
is still dead.
Hence the question - am I wasting my time without a schematic for this
analogue board?
Cheers!
--
Adrian/Witchy
Binary Dinosaurs creator/curator
Www.binarydinosaurs.co.uk - the UK's biggest private home computer
collection?
On Mon, Oct 31, 2016 at 11:11 AM, emanuel stiebler <emu at e-bbes.com> wrote:
> On 2016-10-31 08:48, Ethan Dicks wrote:
>
>> One of the great recent updates was backporting the MSCP driver from
>> 2.11 to 2.9. That opens up KDF11 MicroPDP-11s to running 2.9 with an
>> RQDX3. Prior to that availability, one needed an RLV12 or other Qbus
>> disk controller for that platform.
>
> I missed that :(
About 15 years ago, Jonathan Engdahl backported the MSCP driver to 2.9BSD...
> more details?
First hit:
http://home.windstream.net/engdahl/2_9bsd-mscp.htm
-ethan
Out of curiosity and ignorance what's with the solder joints on the cards in the pictures? That orange color seems like it's everywhere around cold looking solder joints. ?Is that rust, some sort or protection, or acid corrosion?
-------- Original message --------From: Mark G Thomas <Mark at Misty.com> Date: 10/31/16?
I had the pleasure of visiting Rick yesterday. Please see below
additional information about remaining items, with links to photos.
Please contact Rick directly if interested.
Original posting here:
On Tue, Oct 18, 2016 at 08:44:39AM +0000, steven stengel wrote:
> ---------------------------------------------------------------
> *************? Contact Rick below if interested.? *************
> ---------------------------------------------------------------
> Name: Rick Bunker
> Contact: rick at bunker.us
> Location: Jenkintown, PA???
10/30/2016 Update:----------------------
> The Altair 8800, a very early one, 4-slot motherboard, 1K ram, ceramic CPU,
> you will see: https://goo.gl/photos/3C1pzfwFoZ3koPgt9
>
On 2014-10-26 3:07 PM, Toby Thain wrote:
> On 21/10/14 7:38 AM, Noel Chiappa wrote:
>> > From: Toby Thain
>>
>> > Looking to see what the internal self-test returns as an error
>> code
>> > (that can be done with console ODT, it doesn't need a program) is
>> > probably the first step in diagnosing.
>>...
> OK, after powerup, the bits of the VAR register (e/w/p 2000192c) are
> D800, i.e. the test result bits VAR12:10 are 1,1,0 - meaning RAM test
> failed.
Hi all,
As an update to this project, I can report that the DELQA has been
repaired with four new static RAM chips, and now the MicroVAX II's
network is fully working (including netboot).
Credit due to Joe Zatarski (joe_z) who did a beautiful job of
desoldering and putting sockets in for the four RAM chips.
--Toby
>
> I must be doing something wrong running the test manually, though -
>
>>>> d/w/p 2000192c 2000
>
> Just leaves 2000 in the VAR register, permanently.
>
> --Toby
>
>
>>
>> Noel
>>
>
>
My ISP (which I have used for 20-odd years) has decided to drop its e-mail
service....
My new address (at least for the moment) is :
ard.p850ug1 at gmail.com
If any of you mail me privately, please use that from now on....
-tony
Here is my daughter Gina, I thought you guys would like, Tek is still exciting.
Sure, we have lots of PC's around the house, but this is the first one that she is programming, and programming the 4051 creates a smile.
Randy
https://youtu.be/o0LiYkHG3iE
Noticed this on Nekochan:
http://forums.nekochan.net/viewtopic.php?f=4&t=16731198
No affiliation
-----
Hi,
I have an IBM 5360 with all of the manuals, cables, etc. The monitor
is missing. There are boxes and boxes of manuals, modems, cables, etc.
This is free for someone who wants to pickup in Milwaukee. This
posting will be active for a week. If I do not have any takers, it is
going to recycling.
Thanks!