I was wondering if anyone out there knew if these guys are still in
business? I want to order something but before sharing my CC info I actually
want to make sure there is someone on the other end of the line. I've tried
emailing them and calling multiple times. Emails have gone unanswered and
the number is never picked up. It goes to what seems to be a generic home
answering machine. Thanks.
-Ali
While looking for parts for a fellow list members project, I found
these-again, and decided it was time they found a new home. I have more
than one of a few.
If interested please make an offer off list. $10 shipping for one or all
within US. If you are outside the US, please send me your city, country and
mail code.
Thanks, Paul
DILOG
DQ130
DQ686
Emulex
SC01
SC03
TU11
TU121
UC171
QD241
Sorry got really sick. Below is the model numbers. I will supply more info if anybody is interested
Pricing is open due to shipping weight is included
CRT monitors working with cables
HP A4033A 65lbs
HP A45764 75lbs
servers/workstations
HP Visualize C180 30lbs
HP Apollo 400 MOD#A2193A 90lbs
Mentor Graphics HLN5065W 100lbs
I clan also be contacted via cell 7607030986
OK, while we're on the topic of core memory sense circuitry, in some of
the old calculators that I've come across (a good example being the
Casio AL-1000 -- http://oldcalculatormuseum.com/al1kck10l.html) ) there
are transformers (pulse transformers) in the core memory sense
circuitry. What purpose would these serve, and why are they used in
some core memory applications, and not in others? In the case of the
AL-1000, similar transformers are used in the X-Y drivers as well.
Core memory sense amps and drivers are that mystical analog stuff that I
don't understand very well :-)
Can someone enlighten me about these transformers?
Thanks,
-Rick
---
Rick Bensene
The Old Calculator Museum
http://oldcalculatormuseum.com
Hi all
I was told that VAX-11/750 memory could also be used in an PDP-11/70 (or
maybe some other model). Is this true?
I have also read that there are three kinds of memory boards for the 11/750:
M8728: 256k byte memory array;
M8750: 1M byte memory array;
M7199: 4M byte memory array.
(As well as some third party boards.
Which one of these, if any, could be used in an 11/70?
Kind Regards,
Pontus.
I've got a technical question about core memories. I've been
looking, in particular, at the MC1540G sense amplifier. There's
an external capacitor that is supposed to be connected between
pins 1 and 10 (it looks like about .01uF was traditional). Maybe
I'm being thick this week, but I don't quite get what this does
for the circuit. It's part of the "DC restoration" section.
I think I have some idea what amplification and slicing mean
in this context, but "DC restoration" isn't firing any neurons.
Can any of you that have studied how core works help me
understand this?
Thanks,
Vince
--
o< The ASCII Ribbon Campaign Against HTML Email!
Hi all,
I'm looking for the front panel for a 19" 2RU (3-1/2") high four-slot PDP-11/03-KA, with a rectangular hole for the three switches. Looking at photos on the web, some appeared to have badges and some didn't, is that the case?
I've not much to swap in my 'stash' except some old Terak Qbus cards and a hex-height Unibus M7234 timing board from an 11/40, of unknown working condition so I'm happy to Paypal if you had one.
Thanks for any help - I recently joined this list and the posts I've seen so far are really interesting.
Regards,
Steve Malikoff.
I'm planning connect my HP1000 to ASR-33, so I could play with it for real...but only problem: I have no TTY board :(
Anyone have spare for sell/exchange/donate? I might consider give up my Grumman HP1000 SCSI controller board in exchange...
Also I'm interested other boards (X&Y and RS232), peripherals and etc. HP stuff...
- Johannes ThelenFinland
Before microcomputers blog (Finnish) http://ennenmikrotietokoneita.blogspot.fi/
I have a friend with a large number of pulls from DG 800's and 1200's
and am sending out a general query to see who might have a chassis to
serve as a system for testing and eventual build up of a system.
We will be photographing / posting somewhere the boards, but he feels
they are ffrom the Nova 800 or 1200 and not later.
Thanks
Jim
