I will shortly be receiving some of these, apparently a mixture of rev A and
rev B. I don't know what the difference is, can anyone tell me?
Thanks
Rob
Anybody know where I might be able to find a Sun 501-1134 or 501-1209 3/110
Motherboard?
I've got one that's got flaky RAM, and while I try to find the defective
components, I'd like to find a replacement in case it's not something easily
repairable, so I can keep the system operational.
Thanks.
Earl
This guy is going to give me boxes of these old magazines.
If there are any you want, I can mail them media rate, or you can pick-up in southern California 92656.
I don't really want to pick through them looking for specific issues, though.
Byte magazine
80 Micro-C
Communications of the ACM
ACM Computing Surveys
ACM Sigart
Kilobaud Microcomputing
Computational Linguistics
Scientific American '60s
Sent from Steve's iPhone.
Hi All
I'm in Berlin until friday. I'm planning a visit to the Technical museum
today. Is there anything else classic computing wise that I should check
out?
Anyone in berlin who wants to show of their collection?
Kind Regards,
Pontus
Hi,
got 2 HX20s in carrying cases yesterday. As far as I can tell the displays
work. The Cassette Drives spool and the one machine I tested loaded a
program.
The internal batteries are dead but exchangeable to more modern rechargable
cells with little effort. I'd like to swap the second HX20 for some radio
gear (a Stornophone 6000 for 2m VHF for example would be a great deal). The
available HX20 comes to you with a carrying case, a bit of printer paper, a
Wall-Wart(original) and the cassette module on the right; german localized
keyboard. The little computer looks nice and clean but is rather untested
(it switches on at least and brings the 1 Monitor 2 Basic menu). I can throw
in a micro-cassette or two if you want.
There were some Bull marked printed boards in this lot, likely from an old
computer which are available for any interested people too. I don't have any
idea what this boards are but I think these are 60s PCB-Design. Every board
is a c (abt. 15cm sidequadratis) and has some little doughter-boards
soldered onto. I'll post pictures in the evening.
http://www.technikum29.de/de/rechnertechnik/gamma10.shtm has an Image of One
of the cards I've got too. I have 5 or 6 cards in total. Available to good
hands.
Regards,
Wolfgang
<offtopic on> With the HX20s came an old Eminent Type-80 Electronic Organ. I
found nearly nothing about this particular model but would need some
schematics or hints to repair this one. Should bring nice sounds as it is a
full tube model. Anyone a clue where I could get some more information
<offtopic off>
--
Wolfgang Eichberger - OE5EWL
Operating System Collector
Blog: 5ewl.blogspot.com
Homepage: www.eichberger.org
Hi.
Got a PDP-11/34 today. It came with a RK05, a Tektronix 4012 + hard
copy unit and a Western Peripherals TC-130 9 track tape controller.
Unfortunately I had to leave the actual tape drive behind. No space
left on /dev/car and way to heavy for my herniated intervertebral
disk...
The tape drive was some kind of Cipher 800/1600 BPI drive. There was
printed "MOD NO 0920640-1250U" on it. I couldn't find anything usefull
on the net with this information.
Now the problem: I own a Cipher 880 9 track tape with Pertec interface.
It works well on my QBus VAXen and the PDP-11/73. So I am used to the
2 x 50 pin cables / connectors found along the Pertec interface. But
the TC-130 tape controller has one 50 pin cable labeled "control", a 26
pin cable labeled "read" and a 26 pin cable labeled "write". There are
two connector adapters to adapt the 26 pin cables to 36 pin connectors.
I found the TC-130 manual on bitsavers. From a quick look at the signal
names the interface of the TC-130 is not Pertec. But what else?
Is there any way to connect the TC-130 to my Cipher 880?
--
\end{Jochen}
\ref{http://www.unixag-kl.fh-kl.de/~jkunz/}
Not the most classic of classiccmp but by chance anyone have one of
these around? No real reason or need, just want one in my collection.
Or anyone know how common they were back in the day?
Here's an Ad for it I found:
http://www.flickr.com/photos/thedamnmushroom/5362889570/
Hi all, I obtained a MINC-11 from Adrians DEC emporium(aka garage) in
Cambridge last year
(http://www.binarydinosaurs.co.uk/museum/digital/minc/index.php). I've
finally got around to taking a look and it appears to be complete and
original with a /03 CPU.
Taken all the cards out and given it a good clean. Checked for any odd
washers etc. in the backplane.
Removed the power supply (H786), hooked up to a pair of hard drives as a
dummy load and tested. Nothing. Normally at this point I'd scrap it and
hook up a PC PSU but I've been reading this group too long and have been
persuaded by Tonys component level repair arguments so I got stuck in :)
Tracked it down to one of a pair of 1N4004s connected in series after
the 7912 12V start-up regulator. So, I now have healthy 5V & 12V
supplies and these seem to be stable for a long time with all the cards
in place.
But - it's not booting. The diag LEDs on the BDV11-YA constantly read
1001 from power on (I'm assuming that on=1). The only table of diag
codes that I could find lists 1001 as "DECnet message received" which I
believe to be bogus since I don't have any DECnet cards (I'm also
wondering if the MINC has different diag codes?). So I started digging
further and found that BDCOK H is ~1.7V and BPOK H is ~2V. Now, I
believe that these signals are generated directly from the PSU,
specifically the power monitor board that calls them DC L and AC L. My
assumption is that these should both be at 5V in a healthy system since
they are active high - correct?
Unlike a regular LSI11 the MINC doesn't have any front panel buttons or
LEDs (e.g. for BDCOK status) so I can't easily tell if what I have is
good or not...
I've not gone too much further yet but thought I'd try and get some
knowledgeable input to make sure I'm not going down the wrong path. One
thing I have found is the -12V supply that's only used inside the PSU
(and feeds the power monitor board) is at ~-15V.
Many thanks for any advice!
James
