Hi list,
I have 7 2000-sheet boxes of tractor-feed plain 11x14.5" listing paper
which I'd like to give away as I need the space back. Located in West
Yorkshire, UK.
Sorry, it isn't greenbar ;)
There are also 3 boxes of A4-ish size (11x9.5" I think they are).
Free, but you'll have to collect. I'd ship if you're desperate, but it
won't be cheap as they're heavy.
Please drop me a mail if you're interested - thanks.
Ed.
"Rawn's Buy & Sell Network" in Burnaby BC (Canada),
says he has a warehouse fill of old computers to
hopefully sell as a lot.
Consists of mostly 80s and 90s systems, like Apple,
Macs, IBMs, Next, Commodore, Atari, Tandy, Hyperion,
etc. as well as tons of software.
Here are some pics he sent me:
http://members.cox.net/oldcomputerads/oldpics/old.html
Do not contact me, please contact:
rawnsbuysell at lightspeed.ca
Enjoy!
____________________________________________________________________________________
Be a PS3 game guru.
Get your game face on with the latest PS3 news and previews at Yahoo! Games.
http://videogames.yahoo.com/platform?platform=120121
I'm looking at what it would take to make a barebones "museum piece"
bit-serial computer along the lines of an LGP-30 or maybe a Bendix G-15.
I don't want to do the whole vacuum-tube-computing trip, so I'm
limiting my madness to discrete bipolar transistors, specifically the
2n2222. To keep it interesting, I want to use only components
available to mortals in 1963. And the keep the project within budget
(i.e. none to speak of), I'm further limiting the number of
transistors semi-arbitrarily to 256. Of course there will be a pile
of si diodes, resistors and capacitors involved, but the idea is to
keep the number of active components down -- if only so this beast
will fit in the boot of my car!
I've scavenged the web for information on bit-serial magnetic drum
machines of the Elder Years, and I think I have a pretty good notion
of how they worked (mostly very slowly). What I haven't been able to
get a handle on is how to make a serviceable magnetic drum. I reckon
I can do some simple prototyping with some CMOS 64-bit shift
registers so I don't have to debug both the logic and the magnetic
read/write electronics, but beyond that I have only a hazy idea how
to proceed.
Certainly I could trash a few old cassette decks, or even get some
floppy R/W heads to experiment with audio recording tape super-glued
to a soda can, but I really want to get at least the performance the
old machines could produce, so that means a reasonably fast drum RPM,
somewhere around 6000 RPM, say.
Any ideas?
We have one that does not work as well as the original manuals. We cannot get ours to work as we do not have the breakout cards for troublreshooting thi unit.Contact us if we can possible help you.
> Date: Mon, 17 Dec 2007 09:31:49 +1030
> From: Robert Nansel <bnansel at bigpond.net.au>
> I think I might have a whack at making R/W heads using small ferrite
> cores/beads, the kind used in radio work.
...lots of detail...
> So, aside from the mumbles, does this sound like a workable plan?
I'd think that you'd want the head characteristics to be a very close
match if you intend to employ more than one head per track--and I
can't see how you'd get the head gaps remotely close in
characteristics with one another.
On the local Freecycle, I see VHS recorders hitting the landfill with
incredible regularity. Why not simply scavenge the heads from a few
of these? Certainly, the frequency response should be good enough.
As far as the disk goes, that should work. It seems to me that some
of the Shugard SA-4000 models even had a track or two of fixed heads
as an option.
Cheers,
Chuck
Date: Tue, 18 Dec 2007 10:03:34 +0000
From: Ethan Dicks <ethan.dicks at usap.gov>
Subject: Re: Shift Registers as Delay Lines (was Delay lines in TV
sets)
On Mon, Dec 17, 2007 at 06:52:59PM -0500, Allison wrote:
>> MOS shift registers of lengths greater than a few bits are very late
>> 60s (after 67 or so). By early 70s parts 1024 long ere not uncommon.
>I think I have a couple of old SAD1024 MOS shift registers from when I
>was collecting deeply discounted items from the local Radio Shack
>"Manager's Table" as a kid.
>I had thought one day to make the audio echo/delay circuit I think I
>saw in an old Forrest Mims circuit book, but a solid-state acoustic
>delay line emulator sounds like a much cooler place to put them.
>-ethan
___________
Sounds like our shopping habits were the same in those golden days
at the 'shack ;-); I've still got a couple waiting for me to get a round tuit
(the data sheet also has the bucket brigade audio delay schematic).
As a digital delay line I guess you could even use it word-wise since it's
analog; you'd need some pretty fast DAC/ADCs though.
mike
Wasn't someone on the list looking for wide format green-bar paper a
while back?
PublicSurplus.com has several boxes listed.
Items 228477, 228478, 228480
s shumaker
> Sounds like an ordinary (for SGI types of ordinary) Onyx2. That has the
> framebuffer hardware in the upper module, and CPUs in the lower; one
> framebuffer module per machine, but up to 7 (IIRC) CPU modules in
> multi-rack configurations.
Seven CPU modules is unpossible. The (hyper)cube topology nust be maintained, so you can only expand a machine by doubling the number of modules connected together. Powers of two.
,xtG
tsooJ
I have three old 8-inch diskettes with graphic files on them from an
old MRI machine, probably a Siemens Magnetom 1 using a VAX computer.
I would like to compare the old pictures with modern MRI or CT scans
or X-rays taken of the same person.
Would someone in the UK be able to read them and store the files on
a modern diskette or CD?
I can read 5 1/4, 3 1/2 or CD.
Kind regards
Carl Heidelmeyer
Consultant Anaesthetist
Portishead UK
