On Sun, 6 Aug 2006 16:17:48 -0700 (PDT), Fred Cisin
<cisin at xenosoft.com> wrote:
> I'm trying to figure out how to make pneumatic (NOT hydraulic) gates.
> Once I can build a half adder and full adder with compressed smoke
> (no mirrors), THEN I'll be ready to start really learning how
> digital electronics works.
>
All you want to know: <http://www.engnetbase.com/ejournals/books/
book_summary/toc.asp?id=501>. Let us know how it works out :=))
CRC
I have a couple of bits that may be of interest for someone.
I have a manual for a Century 8" disk drive, removable that I will be
putting in the scan pile. If anyone needs it sooner than later, reply,
and I'll get it scanned somehow. I had the drive and may have some
of the media around in my piles as well. This is a 2075 or 2120
drive Unfortunately I only have the user manual, but it has quite
a bit more info than junky manuals do today, if someone needs
the info.
There was an SMD adapter, which I believe we had with
our units.
Also a TVI 925 w/o keyboard on epay, claims it lights up.
5233869793
If anybody happens to have the following for sale, then please contact me
off-list.
- Grundy Newbrain (model AD or M)
- Teleram T-3000
- Sord IS-11 Consultant
- Texas Instruments Compact Computer 40
Thanks,
- Evan
david page <daspage at yahoo.com> wrote:
> [...]is there a website to find out possible market value and maybe
> a buyer? This is what I had acquired:
>
> Hewlett Packard- HP-87
> [... series 80 stuff ...]
I'd say eBay is your best bet. Search for completed auctions which
will give you the closing prices. You have to decide whether you want
sell the whole thing as one item or separately. The all-in-one will
likely fetch less than the items sold separately, but you will save
a lot of time (setting up the auctions, dealing with buyers, packaging
the stuff, etc.) , plus you will not have any leftover stuff.
For more info on the HP-87 and other HP Series 80 computers check:
www.series80.org Series 80 manuals, programs, HOWTOs etc.
www.hpmuseum.net Australian HP Computer Museum
www.hpmuseum.org Museum of HP calculators
**vp
(1) the tape drive: I fixed my IRIS drive by cleaning off the goo and sliding on a section of some sort of (probably very nice & expensive)
tubing I got at Boeing Surplus. Not quite vinyl (matte finish and slightly bluish, more flexable then vinyl), but similar. Get a set of calipers in
there and get the O.D. and I.D. needed and let me know. I still have many yards of the stuff.
(2) Sun tapes are in TAR format, excepting the first couple, Let me grab my "System Administrator's Guide to Sun Workstations".
O.K.- for SunOS 4.0 on QIC:
tape: file: name: format:
1 0 boot image
1 1 XDRTOC TOC
1 2 copy image
1 3 mini-root image
1 4 munix image
1 5 munixfs image
the rest are TARs, except tape1, file 15 (copyright) and tape2, 0 (boot) 2,1 (XDRTOC) and 2,12 (copyright)
Have the whole list if anyone needs it, don't want to choke up cctalk, though
I archive twice: once as "dd" files, once as "extracted" files. On TAR tapes, the dd files double as the extracted files, so there is no issue (same with CPIO). Things
like IRIS-4D disttapes (distcp) and Apollo Domain tapes (rbak) need to be extracted in order to be readable without rewriting a tape, though. Pay attention when
copying older tapes. Sometimes the belt slips and you get some slack that starts to make a snapping or popping noise as it gets pulled taut and goes loose.
If you don't catch this, you can tie your tape in knots.
A script I use to automate the dd copy follows
#! /bin/sh
filenum=1 #where the numbers in the filenames start
bs=1024 #block size, bigger = faster, smaller=better error handling
while [1]
do
dd if=/dev/nrst0 of=file${filenum} bs=${bs}
if [$? != 0]
then
break
fi
filenum='expr $filenum + 1'
done
---------
slightly crude, but works. Replace the /dev/nrst0 with your tape no-rewind device (this is set up for SunOS4 as it stands).
Make a directory with the name of the tape, cd to it, run the script, and the tapefiles will be extracted in file1, file2 ... files.
Pretty much 1985 to when they quit (2000) There are some interesting
computer and computer-related projects in them. Either way, they're
free for shipping to whomever wants. If no one bites, they are hitting
the recyling bin.
Jim
Awhile back I asked for help rescuing two large collections of classic
computers and other related items and to date we are just $1400 dollars from
meeting our goal. The cost of the two trips, one to Nebraska (was KS but
items moved for storage) and the other to Georgia is estimated at $3200
total for truck rentals and fuel. I will be paying for my own meals and
those that help in each State. I have volunteers in each area that have
offered to help load the trucks. So, if I can get just 140 more people to
donate $10 then both trips can be made. A partial list of the items can be
found at www.houstoncomputermuseum.org and your donation large or small is
tax deductible (we are a 501(c)(3) nonprofit). Thanks to all that sent
funds in the last few weeks. Thanks for looking.
I recently found a set of Win95 floppies. Yeehaw what fun!
__________________________________________________
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Tired of spam? Yahoo! Mail has the best spam protection around
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"OpenVMS VAX" - pure bloat. 4 extra keystrokes, 4 extra bytes (unless you have a 7-bit impl, in which case it's one nybble less)
and the LMF still calls it VAX-VMS.
And my "no more grumping" resolution's already out the window. Faugh.
