26 Aug
2005
26 Aug
'05
3:25 a.m.
On Thu, 25 Aug 2005 several wrote:
Ummm. No dice. No HSC ever used Unibus, and since this a Unibus machine...
Also, the connectors are very oddly marked if it were CI.
From: Al Kossow <aek at bitsavers.org>
Good point. It could definitely be 1553B.
Does anyone recognize this card?
probably MIL-1553B (1mbit network used in aircraft) Any vendor? Huntsville Microsystems made interfaces.
Try googling for "1553B unibus"
From: Sridhar Ayengar <ploopster at gmail.com>
Joe R. wrote:
Actually, there never was a Unibus CI. The CI controllers on old VAXen was
never on Unibus, but on SBI. The 11/750 had a whole separate cabinet for
the CI750, which I think hung off the CMI (or what the bus on the 750 was
called).
Does anyone recognize this card?
<http://www.classiccmp.org/hp/Stuff%20Found%20at%20Rogers/network%20card.jpg
Looks like a CI, no? But I didn't know that you could put a Unibus CI
in a PDP-11. I thought those were for just the VAX-11's. I found it in a PDP-11/44 but I couldn't find
a model number or
manufacturer's name on it. The other end of the four red cables connect to
four BNC connectors on the back of the cabinet and are marked Network
Ports. see
<http://www.classiccmp.org/hp/Stuff%20Found%20at%20Rogers/back3.jpg> From: Paul Koning <pkoning at equallogic.com>
Subject: Re: DEC network card?
To: cctalk at classiccmp.org
Message-ID: <17165.65022.802145.195486 at gargle.gargle.HOWL>
Content-Type: text/plain; charset=us-ascii
Slightly, but I wouldn't draw that conclusion too far. :-)
>>>> "Simon" == Simon Fryer
<fryers at gmail.com> writes:
Simon> On Thu, 25 Aug 2005 12:16:22, Joe R. <rigdonj at cfl.rr.com>
Simon> wrote:
> Does anyone recognize this card?
> <http://www.classiccmp.org/hp/Stuff%20Found%20at%20Rogers/network%20card.jpg
Simon> Cabling looks like SDI.
Agreed. > > I
found it in a PDP-11/44 but I couldn't find a model number or
> manufacturer's name on it. The other end of the four red cables
> connect to four BNC connectors on the back of the cabinet and are
> marked Network Ports. see
> <http://www.classiccmp.org/hp/Stuff%20Found%20at%20Rogers/back3.jpg>
Simon> The BNC connectors are a bit novel if it is SDI.
If they were TNC (threaded not bayonet) I'd suspect it to be a CI
interface card (from an HSC50 or the like). It doesn't look like a DEC board (unless the
digital logo is on the
other side). The cable attachment for those coax cables doesn't have
a DEC look to it, either. And the picture of the back has a mil-spec
look to it. I wonder if this is a military databus interface.
That would go well with the previous guess of MIL-1553B, which I think is
probably the right guess.
Johnny
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at update.uu.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol