5 Feb
2003
5 Feb
'03
9:15 a.m.
First, the question. Look for "SELLING" below for what I have 'for
sale'.
I've managed to pick up a TECMAR, Inc. "LAB TENDER COMP" card for the
IBM PC (8bit ISA interface) but I don't have any docs on it. There's a
total of 5 34pin headers on the card, a bunch of 7400 seris logic, an
AM9513, AM8255A-5, 5xTL084CJ, 4xHEF4051BP chips, and 3x8switch
dip-switches. Does anyone know what this is and/or have software/docs for
it?
SELLING
+ Digital SC008-AB, one with an "A" and one with a "B" on it, has
many
(maybe 20) TNC Jacks monted on it, some with 'terminators' on it. Does
anyone know what this is? I'm intrigued by it.
$5 each + shipping
+ Digital M8210 - 32kW (72bit words) MOS memory for a VAX-11/780. It's
still sealed in an anti-static bag, so I assume it's in excellent
condition.
$5 + shipping
+ NCD 19c Xterminal, no cables. Uses a sync-on-green monitor, does color,
has AUI/10Base2 network connectors, uses standard PS/2 style keyboard
and a 9pin serial (pc-like) mouse.
** Based off of Motorola 88100 processor **
$10 + shipping
+ 4 x Sun SparcStation 5, 64MB RAM, CG6 framebuffer, 2GB Seagate ST32550WC
hard drive. These are working, but don't have an OS installed for
licensing reasons. I can install Debian Linux (base install) on them
if interested (for free!).
$15 each + shipping,
also have some parts (lots of CG6's), email if interested.
+ 6 x Sun SparcStation 5 power supplies (PN 300-1215-02):
ratings are +5V @ 25A, +12V @ 2.3A(Max 4A), -12V @ 0.25A
max continuous 150.2W, max output <15sec 174.2W
$5 each + shipping
+ Not really classic, but I've got a lot of RJ45->DE9-F cisco console
cables, and 48VDC, 0.3A table-top 'wall wart' power supplies. I figured
that they might be of some use to list readers, and wanted to do this
before they go onto eBay.
$5 for one + shipping, or make me an offer for >1.
+ VME Boards - have socketed chips that are re-usable:
PE/IO:
1 x MC68881RC15A - math coprocessor
1 x MC68901P
2 x MC68230P10 - 68k 'parallel port' chip
1 x PAL16R4CN -\
1 x PAL14L4NC --+- does anyone know if they're erasable?
1 x PAL16R6NC -/
2 x D8293 --\
1 x P8291A ---+-- Intel GPIB chips
parallel ports:
2 x MC68230P10
n x 74LS00 series logic IC's
net interface:
2 x MC68230P10
n x 74LS00 series logic IC's
DMA interface:
n x 74LS00 series logic IC's
68010 board:
1 x MC68010L10
4 x KM6264L-15 8k x 8 150ns SRAM
4 x M5L2764 8k x 8 EPROM
1 x 5.0688MHz oscillator
68000 board:
mostly same as the 68010 board, except with MC68000P8 instead
I also have a couple of prototyping (wire-wrap) VME boards. You can
see everything I have at http://purdueriots.com/mvme/ including (fuzzy)
pictures of the boards. I'd like to get $5 per board + shipping to
recuperate my costs. I can do cheaper for large quantites.
** The CPU boards have custom-developed console 'debuggers' that use
the RS-232 port on the CPU card as a console. They *require* that
a PE/IO board be connected to the VME bus in order to 'initialize'.
You could, of course get around this by replacing the ROMs.
If (when) I get multiple offers, I'll try to choose fairly who gets the
stuff, or divide it up if there's multiple people interested
Thanks for listening!
Pat
Lafayette, IN, USA 47904
--
Purdue Universtiy ITAP/RCS
Information Technology at Purdue
Research Computing and Storage
http://www-rcd.cc.purdue.edu
5 Feb
5 Feb
9:24 a.m.
+ Digital SC008-AB, one with an "A" and one
with a "B" on it, has many
(maybe 20) TNC Jacks monted on it, some with 'terminators' on it. Does
anyone know what this is? I'm intrigued by it.
$5 each + shipping
StarCoupler, for CI.
--
Eric Dittman
dittman(a)dittman.net
Check out the DEC Enthusiasts Club at http://www.dittman.net/
9:49 a.m.
+ Digital
SC008-AB, one with an "A" and one with a "B" on
it, has many
(maybe 20) TNC Jacks monted on it, some with
'terminators' on it.
Does anyone know what this is? I'm intrigued by it.
$5 each + shipping
StarCoupler, for CI. 
10:18 a.m.
+ Digital SC008-AB, one with an "A" and one
with a "B" on
it, has many
(maybe 20) TNC Jacks monted on it, some with
'terminators' on it.
Does anyone know what this is? I'm intrigued by
it.
$5 each + shipping
StarCoupler, for CI.
11:03 a.m.
+ Digital
SC008-AB, one with an "A" and one with a "B" on
it, has many
(maybe 20) TNC Jacks monted on it, some with
'terminators' on it.
Does anyone know what this is? I'm intrigued by
it.
$5 each + shipping
StarCoupler, for CI. For the benefit of those of you that aren't
familiar with it, CI is a
70 Mbit/second network (somewhat similar to Ethernet) which DEC
introduced in 1981. It was originally supported on the DECSYSTEM-20
and VAX-11/780, and the HSC50 was used to attach disk and tape drives
to CI clusters. The Star Coupler is a passive device that acts as a
hub.
I'm still looking for an HSC50 on the west coast. Someone offered
to sell me one that is stored in Houston, and if I get sufficiently
desperate I'll buy that one.
Where were you when I posted about the two free HSC50 controllers
and drives in Michigan a couple of months ago?
I'm probably going to have a couple of HSC95 controllers and
RA73 drives available later.
--
Eric Dittman
dittman(a)dittman.net
Check out the DEC Enthusiasts Club at http://www.dittman.net/
1:47 p.m.
Where were you
when I posted about the two free HSC50 controllers
and drives in Michigan a couple of months ago?
Not in Michigan, nor with excess funds to pay for shipping to California.
Sigh. 
10:01 a.m.
New subject: DEC CIPCA (was Re: Things FS (dec, ncd, sun, chips), and Info requested)
Sridhar wrote:
How much are going price on CIPCA's?
Expen$ive! I bought two used CIPCA-AA sets last year, but have since
found that I probably can't use them for what I'd intended. They're
potentially available for trade, but since they were expensive I'd
expect something fairly nice in exchange.
There are two CIPCA variants. The CIPCA-BA has one EISA and one PCI
card; the CIPCA-AA has two PCI cards. Only the common PCI card ("port
module") actually uses the bus. The other card ("link module", PCI or
EISA) just uses a slot for power.
I did NOT get the transition cable (DEC P/N 17-03427-01) with them, and
resellers want a lot of money for it. The link module has a D-shell
connector with four coax connectors (out of five positions), sort of like
some monitor connectors on workstations. Without the DEC transition
cable, it would be necessary to build a custom cable assembly between
the D-connector and four TNC connectors. I have not yet located a source
for mating D-connectors.
10:46 a.m.
New subject: DEC CIPCA (was Re: Things FS (dec, ncd, sun, chips), and Info
Expen$ive! I bought two used CIPCA-AA sets last year,
but have since
found that I probably can't use them for what I'd intended. They're
potentially available for trade, but since they were expensive I'd
expect something fairly nice in exchange.
I just wish I had something you'd want to trade.
I did NOT get the transition cable (DEC P/N
17-03427-01) with them, and
resellers want a lot of money for it. The link module has a D-shell
connector with four coax connectors (out of five positions), sort of like
some monitor connectors on workstations. Without the DEC transition
cable, it would be necessary to build a custom cable assembly between
the D-connector and four TNC connectors. I have not yet located a source
for mating D-connectors.
I've got the SC, HSJ, and even all these cables. I'm just
waiting to find a set of CIPCAs.
--
Eric Dittman
dittman(a)dittman.net
Check out the DEC Enthusiasts Club at http://www.dittman.net/
5 Feb
5 Feb
3:40 p.m.
On Wed, 5 Feb 2003, Eric Smith wrote:
So would it be worthwhile for me to pop the cover on one of these and
generate a schematic to post on my website? Or are there not any compents
inside?
Pat
--
Purdue Universtiy ITAP/RCS
Information Technology at Purdue
Research Computing and Storage
http://www-rcd.cc.purdue.edu
> > +
Digital SC008-AB, one with an "A" and one with a "B" on
>
> StarCoupler, for CI.
No kidding, I had to go on a >2000 mile road trip to get one
(along with a lot of other stuff, though). Richie Lary,
formerly of DEC, tells me that they designed an active CI switch,
but the project was cancelled.
3:49 p.m.
Pat writes about the DEC SC008 Star Coupler for CI:
So would it be worthwhile for me to pop the cover on
one of these and
generate a schematic to post on my website? Or are there not any
compents inside?
The contents consist of a small number of large custom-wound
transformers, if what I've heard is correct.
I sort of imagine that the base eight-port version would have
a transformer with nine windings, one for each port and one to
attach the optional in-cabinet expansion to sixteen ports.
But I haven't actually torn one apart, so I could be completely
wrong.
CI was normally run with two redundant paths. I'm not sure if
an eight-port SC008 has two separate transformers to support that,
or if you just had to use two SC008s. It would be desirable to
run the redundant paths through physically separate Star Couplers,
which suggests that each would only have one transformer (two for
a 16-port).
3:55 p.m.
So would it be
worthwhile for me to pop the cover on one of these and
generate a schematic to post on my website? Or are there not any
compents inside?
The contents consist of a small number of large custom-wound
transformers, if what I've heard is correct. CI was normally run with two redundant paths. I'm
not sure if
an eight-port SC008 has two separate transformers to support that,
or if you just had to use two SC008s. It would be desirable to
run the redundant paths through physically separate Star Couplers,
which suggests that each would only have one transformer (two for
a 16-port).
I can post pictures of a board sometime in the next week or so.
I've got one that's removed from the cabinet.
--
Eric Dittman
dittman(a)dittman.net
Check out the DEC Enthusiasts Club at http://www.dittman.net/
4:09 p.m.
On Wed, 5 Feb 2003, Eric Dittman wrote:
Actually, a small number of small custom-wound transformers.
"Ick." (from a difficulty to reverse-engineer standpoint). I'm not fond
of winding transformers.
So, I'll take that as a 'don't bother taking it apart'.
Pat
--
Purdue Universtiy ITAP/RCS
Information Technology at Purdue
Research Computing and Storage
http://www-rcd.cc.purdue.edu
So would it be worthwhile for me to pop the cover on
one of these and
generate a schematic to post on my website? Or are there not any
compents inside?
The contents consist of a small number of large custom-wound
transformers, if what I've heard is correct. CI was
normally run with two redundant paths. I'm not sure if
an eight-port SC008 has two separate transformers to support that,
or if you just had to use two SC008s. It would be desirable to
run the redundant paths through physically separate Star Couplers,
which suggests that each would only have one transformer (two for
a 16-port).
I can post pictures of a board sometime in the next week or so.
I've got one that's removed from the cabinet. 
5 Feb
5 Feb
4:31 p.m.
On Wed, 5 Feb 2003, Eric Smith wrote:
CI was normally run with two redundant paths. I'm
not sure if
an eight-port SC008 has two separate transformers to support that,
or if you just had to use two SC008s. It would be desirable to
run the redundant paths through physically separate Star Couplers,
which suggests that each would only have one transformer (two for
a 16-port).
One star coupler is sufficient for both paths. Where to plug path A vs
path B is clearly labelled and the CI protocol detects crossed cables.
Other than for some degree of path diversity, two SC008's were typically
used if you had HSJ50 or higher controllers which could saturate a ci with
many nodes. Also, the full bandwidth of the HSJ80 cannot be achieved
without multiple SC's and CIPCA's (or other ci widget) on the host end.
--
3:52 p.m.
> > + Digital SC008-AB, one with an "A"
and one with a "B" on
>
> StarCoupler, for CI.
No kidding, I had to go on a >2000 mile road trip to get one
(along with a lot of other stuff, though). Richie Lary,
formerly of DEC, tells me that they designed an active CI switch,
but the project was cancelled. 
10:12 a.m.
----- Original Message -----
From: "Patrick Finnegan" <pat(a)purdueriots.com>
To: <cctalk(a)classiccmp.org>
Sent: Wednesday, February 05, 2003 2:15 PM
Subject: Things FS (dec, ncd, sun, chips), and Info requested
First, the question. Look for "SELLING"
below for what I have 'for sale'.
<snip>
SELLING
<BIG SNIP>
I also have a couple of prototyping (wire-wrap) VME boards. You can
see everything I have at http://purdueriots.com/mvme/ including (fuzzy)
pictures of the boards. I'd like to get $5 per board + shipping to
recuperate my costs. I can do cheaper for large quantites.
** The CPU boards have custom-developed console 'debuggers' that use
the RS-232 port on the CPU card as a console. They *require* that
a PE/IO board be connected to the VME bus in order to 'initialize'.
You could, of course get around this by replacing the ROMs.
If (when) I get multiple offers, I'll try to choose fairly who gets the
stuff, or divide it up if there's multiple people interested
Thanks for listening!
Pat
Lafayette, IN, USA 47904
--
Purdue Universtiy ITAP/RCS
Information Technology at Purdue
Research Computing and Storage
http://www-rcd.cc.purdue.edu
Pat,
I want some of the wire wrap boards. I've sent you an email off-list with
details.
Thanks,
Stuart Johnson
7834
days inactive
7835
days old
18 comments
9 participants
participants (9)
-
arcarlini＠iee.org -
ard＠p850ug1.demon.co.uk -
dittman＠dittman.net -
erd_6502＠yahoo.com -
eric＠brouhaha.com -
pat＠purdueriots.com -
ssj152＠charter.net -
thompson＠new.rr.com -
vance＠neurotica.com