I have recently picked up 2 HP2627A terminals(1985), both missing top
covers, one missing the 2 boards across the back, and a HP82901M flezible
disc drive(1982). If anyone is interested,please contact me off list.
Paul Anderson
217-586-5361
Howdy,
I finally got down to FL for long planned rescue of some Sun VME
stuff...
(BTW, I'll be posting some VME boards available in the next day or
so, FYI...)
and in the rescue I got a Sun 3/110 CPU board (Hurrah!... what I've
been looking for a long time ) and
even a 4/110 CPU board which I think I'll build out too.
However, I've got a memory issue with the 3/110... I get the
following output on the console with diag enabled:
PROM Checksum Test
DVMA Reg Test
Context Reg Test
Segment Map Wr/Rd Test
Segment Map Address Test
Page Map Test
Memory Path Data Test
Err 2: Addr 0x00000400, Exp 0x00000001, Obs 0x00010001, Xor 0x00010000
Can anybody tell me how to determine what bank this is on the 3/110
board, so I can replace the chip? They all look socketed
and I've got a drawer full of RAM that I can swap out, if I can
figure out the chip...
BTW, when I jumper J3100 it cycles in both diag and normal, even with
another memory board in... does anybody know if
the 3/110 would boot with it's on-board memory disabled?
Thanks.
(cross posted to rescue list as well)
Earl
-----------Original Message(s):
Message: 4
Date: Mon, 20 Aug 2007 09:09:08 -0700
From: "Vincent Slyngstad" <vrs at msn.com>
Subject: Re: Logic trainer finds
From: "Ethan Dicks"
> On 8/20/07, William Donzelli wrote:
>> A double-header hamfest weekend yielded a couple of vintage digital
>> logic trainer items. The first is one of those little wood boxes DEC
>> Logic labs, but who cares about that.
>
> _I_ care about it... I had the manual for one when I was about 12. I
> learned digital logic on paper from it. I always wanted one, but the
> books were much easier to find than boxes.
>
> Every once in a while, I entertain making one of my own, but haven't
> ever come up with an inexpensive and robust plug/connector scheme.
I have one of these, and the wires with the plugs are a problem. Mine
came to me with only a few of these left, and I haven't been able to
replace them. For those who've never seen one (but care), there are
eyelets/rivets which are sized appropriately for a mini-banana plug,
set into the lab box to form the connection points. Then, a kit of
various lengths of wire is provided. The wires end on both ends with
something similar to the male pins from a large AMP connector or the
like. The thing is, they have an unusual tapered shape, rather than
a simple cylinder, which allows them to wedge into the eyelets nicely.
The pins appear to be brass, and the eyelets look like they might be gold
plated(?).
I (and probably others who own one) would love to get some more of the
wires, or at least a source for the tapered pins to make new wires.
If the tapered pins were available, I suspect brass eyelets could be
used for an inexpensive (and almost authentic) plug/connector scheme.
(Mini-banana plug hardware seems to be the antithesis of inexpensive!)
Vince
-----------Reply:
Burroughs used this sort of thing in some old patchboards; I wonder if
by chance they're the same size? The diameter of the hole is a tight 1/16"
drill bit FWIW; the tapered pins are tinned though, not brass.
mike
> I remember trying to squeeze
> two 19" Daisy Systems monitors into the back seat of a friend's
> Buick.
Don't happen to have any Daisy software distributions, do you?
Subject pretty much says it all. I have a number of
other S-100 cards to trade or cash if preferred.
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.484 / Virus Database: 269.12.0/961 - Release Date: 8/19/2007
7:27 AM
> "Most of these guys don't want to sell their stuff on eBay,"
> said Mark Bohrer, an engineer who's worked at several area tech companies.
> "They think eBay's a rip-off."
sure.. majority of stuff there wouldn't move on eBay. The stuff that will
is over there. 1/3 of the stalls are generic flea-market stuff. This
flea, like all the others, has been castrated by eBay. It's mostly just a
social event now.
> But for most who have been coming to Cupertino for years,
> it's unimaginable that the flea market could disappear.
The REAL old-timers still call it Foothill,
which is in Los Altos Hills, not Cupertino.
It has only been on the DeAnza campus for a
couple of years.
A few days ago somebody here was asking about a QIC-like drive that
didn't have optioncal BOT/EOT sensors, and wondered what tapes it used.
Yesterday I obtained a car-load of HP150-related stuff. And amongst it
was a pair of HP tape drive,s the 9144 and 9145, which use special HP
pre-formatted tapes.
Those had come to mind when I read the first posting, but I thought the
tape was an HP 'special' so not relevant to the OP's machine But while
looking at theAustralian museum (http://www.hpmuseum.net/), I found a
link to a site that impliex these tapes were standard 3M products of the
time ,the format was not custom HP, etc.
The OP might want to look at that site and follow the links for
'storage', 'magnetic tape' and 'HP9144' (or 'HP9145'). I think that will
turn up a like or twon that will be helpful
-tony
> Well, DOS 6.x had the /f switch on the FORMAT command--which told DOS
> to forget about trying to read the disk, just format it. I believe
> that DOS 7.x ignores /f. And for DOS, there are always third-party
> formatters.
>
> Cheers,
> Chuck
I think you meant the /u switch. The /f switch normally requires some other
parameters telling how to format the disk.
BTW, some interesting comments. I've always been curious why I could bulk erase
a disk and it would sometimes show up with a track 0 bad error (win98se.) Now
I'm going to have to try formatting on an earlier version of DOS.
This is somewhat off-topic as it's not a totally classic-computer event,
but there should be at least one old-ish (1970's) piece of computing
machinery there.
There is an HPCC (Handheld and Portable Computer Club) Conference in
London (Imperial College) on 13th/14th October this year. Details are on
the HPCC website (http://www.hpcc.org), there's an obvious link from the
homepage.
Attendance is free, and you don't have to be a member of HPCC. But you do
have to register befroehand, we need to know how many are coming, and
indeed who. Detials of how to do that are on the website too, don't
e-mail me, OK :-)
-tony
