Anyone interested in this early 8-bit micro? I've just been offered
one for free, but I don't really have the room.
Happy to post it on if the recipient pays P&P from London.
--
Liam Proven ? Profile: http://www.linkedin.com/in/liamproven
Email: lproven at cix.co.uk ? GMail/GoogleTalk/Orkut: lproven at gmail.com
Tel: +44 20-8685-0498 ? Cell: +44 7939-087884 ? Fax: + 44 870-9151419
AOL/AIM/iChat: liamproven at aol.com ? MSN/Messenger: lproven at hotmail.com
Yahoo: liamproven at yahoo.co.uk ? Skype: liamproven ? ICQ: 73187508
For people who don't have enough hot and heavy VME bus action, noticed this
on eBay. Pickup only -- otherwise I'd be bidding on it myself. Looks like
a nice 5/600 for anyone with an interest in Solbournes or SPARCs in general.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=170241777050
--
------------------------------------ personal: http://www.cameronkaiser.com/ --
Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com
-- Apparently I am not very good at being tricky. -- John Hughes --------------
Hi
I am designing an ECB bus backplane for my N8VEM SBC project and am looking
for some peer review prior to going to manufacturing of these PCBs. The
N8VEM SBC seems to be working out alright. About a half dozen people have
successfully built the SBC so now it is time to start thinking about
peripheral expansion.
Although the N8VEM SBC uses the ECB bus for expansion, I have not ever used
ECB bus machines as they are common in Europe but extremely rare in the US.
I have made an ECB bus backplane prototype using prototype boards and it
works well enough so I think the basic concept is sound.
However, I would like to make this ECB backplane as common and general as
possible so other hobbyists can use it not just N8VEM SBC builders. I would
really like to avoid any inadvertent N8VEM unique extensions.
If you have experience with ECB bus based machines, I would like to hear
your comments and suggestions.
So far, the ECB bus backplane has six DIN 41612 connectors. All 96 pins are
routed. Pins for IEI/IEO have jumper pads per connector to allow usage of
Zilog peripheral interrupt priority scheme. The backplane has its own Vcc
and Gnd, including a power switch and LED power indicator.
The PCB is 2 layer to keep costs low. Each side has a ground fill zone for
a low impedance ground. I will be using the double thick PCB material (3.2
mm) for rigidity and the double weight copper trace for low impedance.
Vcc and ground traces are triple wide (51 mils) minimum and also routed on
both the component and copper sides of the board. The rest of the traces
are the usual 17 mils wide.
After I order some of these backplanes, I will make them available in a
similar fashion as the N8VEM SBC. The PCBs will be available for $20 each
plus shipping. The builder will have to source the rest of the parts.
If you are interested in helping or have questions, please review the PCB
backplane design at:
http://groups.google.com/group/n8vem/files?&sort=rdate
There are two recently uploaded PDF files containing the schematic and the
PCB layout.
Thanks in advance for any *constructive* feedback. Have a nice day!
Andrew Lynch
>
> My word! I'm astonished at the levels of interest in this box. I'm
> still trying to contact the donor to arrange collection at the moment.
>
> In addition to this thread, I've also had multiple emails from
> would-be claimants; between multiple time zones and transmission lag,
> I have no idea who was first.
>
> My current thought is this: I could put it on eBay, and whatever the
> selling price it goes for, I will donate that to Bletchley Park or
> some other suitable charity relating to preserving classic computers.
>
> How does that sound to everyone?
Sounds very fair to me, though I was not one of the claimants as I
have had one of these from new.
On a related subject, the mains cable of my UK101 has become sticky
where it has been in contact with expanded polystyrene for many
years. Has this happened to anyone else and does anyone know if this
is a chemical reaction? It might just be coincidence and maybe I
spilt something on it and have forgotten about it. I used a large
ceiling tile to stand the machine on when I first got it so it would
not scratch the table and its been there ever since. Yes I know NOW
about static and expanded polystyrene (I think its called styrofoam
in the states), but back then all the 74 series chips I bought, came
by post pressed into bits of normal white (non antistatic) expanded
polystyrene so I presumed it was safe, apart from the fire risk of
course.
I bought my UK101 ready assembled though I had to insert the second
4k of chips about 6 months later because every time I rang to
complain they said they went out yesterday and were in the post. By
the time I got them the chips had fallen in price considerably. I
built an expansion board with a 6522 on it though I cannot remember
why, nor what a 6522 can do. About then I was offered a moonlighting
job programming the Apple ][+ with the offer of a machine (with two
disk drives) as payment so I lost interest in the UK101.
----------Original Message:
Date: Sun, 20 Jul 2008 11:31:31 -0400
From: Dan Gahlinger <dgahling at hotmail.com>
Subject: the "history" of the Internet/Web
<snippage>
>So continue with your stupid jokes, and ancient references that mean nothing to the public at large.
>I thought this list was a bit more mature than this
>So fine, into the garbage a piece of history goes. congratulations! I hope you're happy
>Dan.
----------Reply:
You're absolutely right; we all need to feel guilty and assume responsibility for
your decision to throw this (so-called) piece of history into the garbage.
You have so much to teach us about maturity; thank you!
m
> Chuck Guzis wrote:
> But that little monitor!
It is small, isn't it? But it's very sharp, even on 80x24 text, so it's
easy to read if you sit about 6" away from the screen. Makes me want to get
a Fresnel lens on a swing arm, a la Brazil :-)
Bob
All
I have 6 SGI Octane computers available for free to anyone who can
come by to pick them up. They have various sets of memory and
graphics cards, and if you're interested and can pick up in Tucson,
I can do a better inventory for you ahead of time. All were
working as of last usage, but will be delivered without a hard drive
( but with the hard drive sled !! )
I also have three VS160 Quantum scsi DLT tape drives and two Quantum
scsi autochangers that hold 8 VS160 tapes.
Again, the machines and the tape drives are free, but I'am not able
to ship ( but I could drop them off someplace locally, if you made
arrangements for someone else to ship them... )
Mike Ingram
I have three PCjr units. One has four sidecars. One has one. The third
has none. There are also four chiclet keyboards, four "regular" keyboards
(one sealed new-in-box), a technical manual, and lots of keyboard
overlays.
Make me an offer.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
>Date: Tue, 15 Jul 2008 12:45:43 -0700
>From: "Dennis R. Cohen" <drcohen at mac.com>
>Subject: USUS Software Library
>
>
>Hi,
>
>A long time ago, I was pretty active in USUS and have a pretty complete
>copy of the USUS Library. Your article implied interest. The bulk of the
>set is on 8", but there is some on the 5.25" that I used with the Sage
>II.
>
>I'm getting ready to move from the Silicon Valley to Spokane, WA, so if
>you are interested, please contact me while I can still find them. I
>also have an old Sage II with Televideo 925 terminal and an Apple /// if
>your USUS Museum would be interested. I would be willing to donate them
>if you have someone to come and get them.
>
>Dennis R. Cohen
>Sunnyvale, CA
