I borrowed a pile of scrap 1970s-era PCBs from my local recycler yesterday,
just to make sure there was nothing important among them before they go off
for processing. Among them are six boards branded as CPT, which I assume
(as I'm in MN) is the CPT Corporation that was in Minneapolis.
The double-sided boards are organized in five rows of five ICs, with 44-way
edge connectors and IC date codes in the 1973-1977 range. I seem to have
p/n's 910012, 910014, 910015, 910017, 910018 and 910022.
In addition to this there's a smaller board which references "deck 1 heads"
and "deck 2 heads", and appears to have a p/n of 910025.
Does this ring any bells with anyone? The Wikipedia entry for CPT mentions
the 'VM' machine in 1976 with dual tape units, so I wonder if they're from
one of those... if so, I'm curious if there are any surviving intact
examples out there (or other info, there doesn't appear to be any CPT stuff
on bitsavers)
cheers
Jules
It has a red tag on it saying it is DOA date 23/May 79
and an obviously poorly removed chip. Anyone want it?
For postage it's yours.
--
- db at FreeBSD.org db at db.nethttp://artemis.db.net/~db
Hi all --
In my quest to get my MicroVAX I to do something interesting, I'm looking
for an Emulex UC04 SCSI controller -- this is one of the few MSCP SCSI
devices that I'm aware of that are compatible with the MicroVAX I (the rest
all require a II or later). I have a nice CMD CQD-200/TM QBus SCSI
controller that I can offer in trade, or I also have a wide variety of
other parts available... please drop me a line if you've got one for trade.
Thanks as always,
Josh
On Fri, 5 Oct 2018, it was written
> http://www.vintage-icl-computers.com/icl49c
>
> Drawings for 16V here
No, only some non-readable pictures of drawings :-(
I should ask the guy to scan them reasonably.
Christian
Be most grateful if anyone can advise here please. Rescued a TRS-80 MC10 from deceased estate recently - it was headed for the bin
but got saved.
The original owner was a bit of an electronics hobbyist and his brother-in-law tossed these boards in with the bundle I grabbed.
http://koken.advancedimaging.com.au/index.php?/albums/boards/
Kevin Parker
I was there and it was always called "The Ethernet". When the 10 Mb
standard came into being, it was then referred to as "The Experimental
Ethernet". If you want to be *really* pedantic, you could refer to it as
the "2.94 MHz Ethernet" --- but that would be silly.
If you'd like to see how Aloha inspired Metcalfe, read this:
http://www.historyofcomputercommunications.info/Book/6/6.7-EthernetRobertMe…
[...] "Is it red?" [...]
LOL I love it! Some beautiful hardware on the list this week, I wish I
snagged that DG MicroNova...
=]
--
Anders Nelson
+1 (517) 775-6129
www.erogear.com
On Fri, Oct 5, 2018 at 10:07 AM Rod G8DGR via cctalk <cctalk at classiccmp.org>
wrote:
> http://www.vintage-icl-computers.com/icl49c
>
> Drawings for 16V here
>
>
> Sent from Mail for Windows 10
>
> From: Christian Corti via cctalk
> Sent: 05 October 2018 12:42
> To: cctalk at classiccmp.org
> Subject: Digico computer
>
> We recently got a Digico Micro 16V computer including a Pertec 3342 disk
> drive. It is a 16 bit minicomputer based on 74181 ALUs and a couple of 4k
> core memory modules.
> Since the condition of the system is not the best (dirt, dust, some
> bent wirewrap pins), I'm looking for the usual information :-))
> - technical manual, schematics
> - software
> I'm thankful for any information.
>
> Christian
>
>
We recently got a Digico Micro 16V computer including a Pertec 3342 disk
drive. It is a 16 bit minicomputer based on 74181 ALUs and a couple of 4k
core memory modules.
Since the condition of the system is not the best (dirt, dust, some
bent wirewrap pins), I'm looking for the usual information :-))
- technical manual, schematics
- software
I'm thankful for any information.
Christian
> From: Eric Smith
> I think the account given in the book may be a bit confused on this
> point. ... That sequence of events is contradicted by Pelkey ...
> describes the name change from Alto Aloha to Ether as happening in May
> 1973 in agreement with WWSUL, except that in the Pelkey account the
> Alto network wasn't designed and built until June, _after_ the name
> change.
It's quite possible that in Metcalfe's interview (which is what the WWSUL
account seems to be pretty much wholly based on), N years after it all
happened, his memory flaked and he got the sequence wrong.
I've had the same thing happen to me, trying to recall the sequence/timing of
early IP work at MIT. I was sure X happened before Y, and then Jerry Saltzer
dug up an old progress report... There's a reason that the gold standard for
historians is contemporary documentation.
Along those lines, here:
http://www.chiappa.net/~jnc/nontech/tmlotus.html
is an amusing story of my encounters with this effect on some Lotus Indycar
research I did.
Noel
Does anybody know names / terms that correspond to the original 3 Mbps
Ethernet?
I.e. 10 Mbps Ethernet is also knows as Ethernet II (2) and D.I.X. (for
Digital, Intel, and Xerox).
Was the first 3 Mbps Ethernet simply called "Ethernet" with an implicit
"I" (1)? Was there a name to differentiate it from D.I.X.?
Grant. . . .
unix || die
