Do we know where theses drives are ( located ) ??
---
L'absence de virus dans ce courrier ?lectronique a ?t? v?rifi?e par le logiciel antivirus Avast.
http://www.avast.com
Forgive the interruption...
I am trying to get a hold of Wayne Smith. I sent him an e-mail a couple
days ago but he has not responded. Is he lurking here? If so, please
contact me.
Thank you!
--
Sellam ibn Abraham VintageTech
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintagetech.com
Whatsoever a man soweth, that shall he also reap. The truth is always simple.
* * * NOTICE * * *
Due to the insecure nature of the medium over which this message has
been transmitted, no statement made in this writing may be considered
reliable for any purpose either express or implied. The contents of
this message are appropriate for entertainment and/or informational
purposes only. The right of the people to be secure in their papers
against unreasonable searches and seizures shall not be violated.
I got a private email (I suspect many of you did too) regarding a sizeable
altair setup (and other accoutrements) being offered up out of an estate
sale.
>From a quick scan, I don't see that this made it to the list. Just in case,
I'm reposting brief info here and a link for more info.
Email:
Hi,
You are receiving this e-mail due to interest expressed as a collector, on
theantiquecomputer.com.
Please find attached a word document with the information and details of
this Altair 8800 Estate Lot. More photos available.
Also, please pass this information to anyone who may be interested.
Thank You
Dan
Dan Tharp
EcycleNW
dan at ecyclenw.com
ecyclenw at msn.com
Also - the attached file (which I cant send to the list, I don't allow
attachments) has been placed at http://www.ezwind.net/altair
It is a word document, but it has embedded pictures and such.
Best,
J
Dave,
Thanks a million! I did not know that. As for the receivers, it can go into
straight TTL apparently, I read that somewhere in an HP manual.
Marc
>From: "J. David Bryan" <jdbryan at acm.org>
>> ...where to get the older CTuL logic IC bus drivers (the 9956 in
>> particular) besides from old boards?
>With the inclusion of a pulldown resistor to -2V, the TI SN75121 is a
recommended replacement, per page 5-6 of the
>"HP 1000 M/E/F-Series Computers I/O Interfacing Guide" (02109-90006
September 1980). It's an active part:
> http://www.ti.com/product/sn75121
> -- Dave
Boy, if you don't know, then who is... But this brings up another good
point, where to get the older CTuL logic IC bus drivers (the 9956 in
particular) besides from old boards? I'll probably need a few to make my own
I/O boards, else I'll have make my own level converters out of SMD
components...
Marc
>From: "Jay West" <jwest at classiccmp.org>
>Subject: HP board id?
>It seems over the years I acquired more than a just a few of these (two
>types of) boards for the HP1000. I'm pretty certain they all came from a
>batch of about twenty HP 1000 series systems I got that were decommissioned
>from military use. They do not seem to be HP in origin, and I don't have
>any
>clue what they are for. Mostly they seem to be stuffed with large numbers
>of
>op amps and some line drivers. Perhaps just flight line testing or ATP?
> If no one thinks these are of any use. they will be scavenged for bus
> driver chips. But I'd hate to do that if they might be historical or
> "interesting".
>A few pictures of each board are at www.ezwind.net/hp-unk
>Educated guesses?
This grew out of off-list correspondence about the
card punch I'd mentioned on here recently; I
thought it might amuse some folks or just possibly
even be interesting:
----- Original Message -----
> On Tue, May 5, 2015 at 10:11 PM, Mike Stein
> <mhs.stein at gmail.com> wrote:
>
> I've got a crazy idea; are you handy
> mechanically and electronically?
>
> I've got a couple of mag card readers; I think
> it would be a most awesome kludge to turn one
> into a punched card reader ;-)
>
> On the other hand, one of my PPT readers also
> reads EPCs (Edge Punched cards)...
>
> m
----------
> From: Kyle Owen
> To: Mike Stein
> Sent: Wednesday, May 06, 2015 11:23 AM
> Subject: Re: Fw: Wright card punch
>
> Hey Mike,
>
> I'm certainly more handy when it comes to
> electronics than mechanics, though I've dabbled
> in a bit of everything it feels like.
>
> What kind of mag card readers do you have? And I
> assume PPT is punched paper tape? I guess I
> haven't seen too many EPCs in my time. What were
> they used for?
>
> Kyle
-----------------
Hi Kyle,
I wasn't entirely serious about the mag card
readers, but it's not a totally ridiculous idea
either.
They're sort of like a linear floppy disk: Imagine
a credit card reader like the one at your local
ATM that sucks in the card and spits it out, but
the card is the size and shape of an 80 column
punched card but made from more or less the same
material as a floppy disk.
The tracks are straight and lengthwise instead of
concentric and they're read the same way as your
credit card, with a stepper mechanism to select a
specific track across the width (height?) of the
card either under computer control or manually
(note the < and > buttons on the front).
Remove the track-select stepper mechanism, add a
light source and an array of 12 photo sensors (or
a mechanical contact of some sort) and you've got
a one-at-a-time card reader; it's even already got
a couple of photo sensors ;-)
As usual with the old stuff (and most of the
'real' punched card readers) the feed rollers look
a little rough, although it looks like you could
probably make new ones out of wood or plastic and
just put a rubber band around them.
Pity I'm getting rid of the punch or I might
actually try it myself for a lark.
EPCs are really just punched cards of various
sizes but instead of using the whole area of the
card the data is punched along the bottom edge
just like paper tape; they're usually read by
normal PPT readers that have a special guide for
the card.
Pictures of the mag card reader here:
http://s1056.photobucket.com/user/dm561/library/?view=recent&page=1
> From: Bill Degnan
> Accepting best offer for a PDP 11/44 located in Landenberg, PA.
Before Bill's mailbox explodes, he has listed this on eBay, and it will sell
there. (Note, he has it listed local pickup only.)
Noel
I have a VAXStation 3520 I'd like to upgrade a bit (because why not) -- if
anyone has any spares they'd be willing to sell/trade for, let me know.
I'm looking for additional memory (I have only 8mb) or an extra dual
processor board (so I can have a quad-processor VAX, which sounds fun).
Thanks as always,
Josh
I have a very strong suspicion that the answer to this is going to be 'no',
but I figured I'd do due diligence and ask...
I have a backplane (one of the rodent barn group) which has a couple of finger
contacts in the backplane missing. (Two came out while I was cleaning it - and
I wasn't being hard on them, they must have been eaten away by the same kind
of chemical action that lifted traces off the boards.)
Is there any way to replace broken/missing finger contacts? I would _guess_
'no', since it looks like the backplane blocks (the things cast out of dark
green plastic, which looks like Bakelite - anyone know exactly what it is,
BTW?) are cast around them (since there's a wire-wrap pin on one side, and a
finger contact on the other).
If the answer _is_ 'no', no biggie - all except one are on one SPC slot, and
it's a 9-slot backplane, so we'd lose one SPC slot - not the end of the world.
The other pin is in the UNIBUS in/out area (1/9AB), _but_ the antique hardware
gods are smiling on us, it's a ground pin (of which the UNIBUS connector
pinout has multiple, so we can probably withstand the loss of one).
Thanks in advance for any help!
Noel
