Anyone care to give a thumbnail sketch of what sampling rates
would be necessary to digitize the signals on recording media
(3 1/2", 5 1/4", 8" floppy, hard disks, drums, disk packs, etc.)
at sufficient rates to preserve the encoding for post-processing
in other tools?
--
Paul Pierce is using this technique to recover data from 7 track
tape.
The only problem I see is people on this list underestimate the
costs involved in putting something together that works.
For the most part, analog level recovery isn't necessary. Modern
digital data separators will recover most media, which reduces the
data rates substantially.
http://www.piercefuller.com/collect/proj.html
In a message dated 9/15/04 10:46:24 AM Pacific Daylight Time,
rich_bramante(a)yahoo.com writes:
I've found a tan LSI AMD3A+ OEM'd by Zilog (has the Zilog name/logo on the
front faceplate). Never seen one of these before. What did it go to? Any
info?
Probably a Zilog Development system of the late 70s or early 80s. We got
several with Intel labels in the 90s in Portland. I think ADM OEM them to anyone
who wanted their own colors.
You might look in the EPROMs, they might be custom or not..... I don't think
the Intels were any different other than the color.
Paxton
Astoria, OR
Hello world,
I have two AIM-65 black plastic cases for give-away.
You pay shipping only. And also a Snickers bar.
Steve
located near Santa Ana CA.
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Today was a good day for me, I picked up 2 RK drives, a RK06 and a RK07.
The airfilter of the RK06 was changed in 2000, so it seems that this
drive has been in use not that long ago. The RK07 has a filter a little
older, but looks also clean (as are the drives internally).
Ed
--
edward(a)groenenberg.net | Collector of PDP-11's.
http://www.groenenberg.net | Politici zijn vieze oplichters.
Unix Lives! M$ Windows is crap.
'97 TL1000S
Specifically a print cylinder and a new pad for the print hammer. Does
anyone know of a source for these two items?
The pad on the print hammer has disintegrated and the underlying metal
has been pounding on the print cylinder. This has caused some of the
letters images to be deformed so that only the top half of the letter
prints. A new print cylinder would be virtually impossible to fabricate,
so I need to find a new or used one.
I can try to replace the pad with something I have, because I don't want
to damage the cylinder any more than it already is. What was the
original material: rubber, leather? Anyone tried this before?
Ribbons are still commonly available though, I bought one at Staples for
US$2.97 this afternoon.
-chuck
So, I gather it's some PDP 11/23 like thing. Are these worthwhile to
gather up?
--
I have the service manual on line. There are differing variants of processor
and disc (5" or 8")
Documentation and esp the diagnostic floppy would be a GOOD THING if
they could be found. The earlier 8550 and DOS50 on floppy would also
be useful.
Most of our displays here at the museum are pretty static.....
we are looking for ideas on introducing some interactive component... ideas
folks?
Thanks Ed Sharpe archivist for SMECC
Please check our web site at
http://www.smecc.org
to see other engineering fields, communications and computation stuff we
buy, and by all means when in Arizona drop in and see us.
address:
coury house / smecc
5802 w palmaire ave
glendale az 85301
Thomas> Tom, Will look but I don't think we have brakets, but I had a
Thomas> come question for you. Do you have an operating manual for
Thomas> the TU 10? Do you know where I might find one?
--
I have TU10 docs scanned. Will work on getting them up on bitsavers.
trying to find a home for the
following DEC bits:
DEC microPDP-11/23 (Fully working)
512 kWord memory, 2 x RX50 floppy, 1 x 40 MB hard disk
Boots RSX-11M, with full set of RSX-11M manuals
DEC Rainbow 100+ (Fully working)
512 kB RAM, 2 x RX50 floppy, 1 x 10 MB hard disk
(RAM & graphics expansion board fitted.)
DEC colour monitor, 2 keyboards.
Boots CP/M & MSDOS,
DEC VT240 terminal (Not working - reason unknown)
With manuals, keyboards & small green screen monitor
We are currently looking to dispose of these because we no longer have space
for them. If you know of anyone who may be interested in the kit AND is
prepared to arrange for collection from the North West of the United Kingdom
we would be glad to hear from them.
---
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