Here's an update on the scrapper from Dave McGuire:
> Ok, some good news here. I've had a good dialogue with that
> scrapper up in Canada; he is beginning to understand the situation.
> He seems to be a pretty bright guy and is receptive to new
> information. I've offered to help him go over some of his stuff
> and help him price it.
--
Eric Dittman
dittman at dittman.net
Is there anyone that has the facilities to read IBM System/36 disks at the
filesystem level?
I have 5 disks from which I need to transfer the files. If someone can do
this for me I will pay in $$$ or trade items.
Please e-mail me directly. I will not get any replies to the list.
sellam at vintagetech.com
Hope everyone is having a groovy time!
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
Etak Disptach is a mid-1980s era GIS (mapping/routing) system. I need the
manual for the product, or the product itself. I'll pay a $100 bounty for
the manual, or more for an example of the complete system.
I do not read the list. I only post here. If you have something or even
a lead, please reply directly to me.
<sellam at vintagetech.com>
Thanks!
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
>In the late 70s I used a timesharing operating system called (IIRC)
>EduComp. This would allow eight users to have access to a virtual PDP-
>8 and 32K memory. Is it available somewhere?
There were many models of EduComp computers - the lower end systems ran a
timeshared BASIC interpreter, and the higher end systems ran TSS/8.
TSS/8 exists on the web and will run on simulators, but the SBC6120 lacks
the timeshare hardware needed to make it work.
AFAIK, EduComp BASIC has disappeared - if anybody has a copy of it, I'd
love to get a copy.
Bob
> Chuck Guzis wrote:
>So, what does one do with a PDP-8 clone?
The SBC6120 will run OS/8, and OS/8 has BASIC, FORTRAN (IV), PAL, MACREL,
LINK, TECO, ALGOL, SNOBOL, LISP, FOCAL, and even a simple Pascal. You ought
to be able to think of something to do with it!
Bob
Alright, so, I finally was able to get good readings at the backplane as far
as votages go. My AC voltage is exactly 28 volts going into all units
requesting. The -15v line is fine, it must just be the bulb that's burnt
out on the regulator. So, as far as I can tell, my power supply is working
just as it should.
So now I move up to the backplane.I plugged in the memory and a DL11-W and
put a tester on the RS232 lines - I get nothing coming from the DL11-W. The
front panel reads all zeros when powered on, the Run light and DC lights are
on.
Here is my current backplane config:
1 M8266-----M8266-------M8266-------M8266-------M8266-------M8266
2 M8265-----M8265-------M8265-------M8265-------M8265-------M8265
3 M7891-----M7891-------M7891-------M7891-------M7891-------M7891
4 M9301-----M9301 M7859-------M7859-------M7859-------M7859
5 EMPTY EMPTY M7856-------M7856-------M7856-------M7856
6 EMPTY EMPTY EMPTY EMPTY G727 EMPTY
7 EMPTY EMPTY EMPTY EMPTY G727 EMPTY
8 EMPTY EMPTY EMPTY EMPTY G727 EMPTY
9 M9302-----M9302 EMPTY EMPTY G727 EMPTY
Can anyone make sense of this?
Thanks
Julian
Folks,
Kirk has an ATT-6300 for sale. Contact him, not I.
--------------------
Kirk <kjb23 at verizon.net> writes:
"I'm the original owner of a 1985 ATT6300 PC I'd like
to sell for whatever its worth. It was a "high-end"
one at the time. 10 MB HD, 640x400 color monitor, 640
KB RAM. I replaced the 8086 CPU with a V30 chip for
faster performance (executes same 8086 instruction set
in fewer T-states), 8087 math coprocessor, ATT 2MB RAM
expansion board, 20 MG Plus Hardcard, and a STI EGA
video card (special card made for ATT computers and
monitors).
It worked fine up until the mid 90's when the power
supply became intermitant. Everything else was
working just fine.
As a bonus, I have an Epson 185 dot-matrix printer
(132 column) in excellent shape. It was bought at the
same time.
Kirk
kjb23 at verizon.net
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
Chuck Guzis wrote:
On 6/8/2006 at 12:40 PM Billy Pettit wrote:
>We used some of them at Control Data on the Process Control Computers. I
>liked them; very nice, relieable drums, ran forever. I would love to find
>one now. Would complement my old timer nicely.
They were also used in the Star-100 SBUs. For the life of me, I never
figured out why drums and not disks, but 'twas so. A lot of military
aircraft computers used them also. The givewaway there would be the 400 Hz
spindle motor. Cheers, Chuck
--------------------------------------------------------
Billy:
There were several reasons, but the biggest one was: they could do parallel
read and writes. You could stripe them for 16 bit wide data paths that
became incredibly fast. And with virtually no bit skew. Plus access time
was never more than one revolution. (It would be years before access time
on disks got down to the 16ms range.) Finally, we just hashed over the
painful reliability of early disks. Drums were used since the 50's, had a
lot engineering behind them.
Unfortunately, they were hard to increase capacity on, weren't removable and
never became cheap.
Billy
Dave Dunfield wrote:
Yesterday I was given a fairly hefty documentation set:
Installation and Operation Model 1016
Drum Memory with Digital Interface
Vermont Reserch Corporation
North Springfield, Vermont
Most of the documents are dated 1969.
It contains a lot of technical information, theory of
operation all all the boards, full schematics, copies
of the original blueprint drawings etc.
Anyone need/looking-for this?
Regards,
Dave
PS: Anyone know what type of system this was used
with?
--
dave06a (at) Dave Dunfield
Billy:
We used some of them at Control Data on the Process Control Computers. I
liked them; very nice, relieable drums, ran forever. I would love to find
one now. Would complement my old timer nicely.
And I would certainly like to have the set of documentation and would gladly
pay for the shipping. But I'll do something better for the group: I'll
happily pay for the shipping to to Al K. so he can put them on his site.
Then all of us will benefit from your find.
Billy
Does anyone have any documentation on MTOS-86? The sample I'm trying to
work through appears to load from CP/M-86 and be directly tied to an
application.
Cheers,
Chuck
