test-drb August 2006

test-drb@ccmp.vtda.org

216 participants
517 discussions

by technobug＠comcast.net

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

18 years, 4 months

Century drive manual, and TVI 925 terminal (separate notes)

by jwstephens＠msm.umr.edu

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

18 years, 4 months

Evan's current wishlist

by evan＠snarc.net

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

18 years, 4 months

OT: Fluidic computer

by cclist＠sydex.com

Here's the web page of a guy who's built himself a 4-bit water adder: http://alumni.media.mit.edu/~paulo/courses/howmake/mlfabfinalproject.htm

18 years, 4 months

vintage HP-87 system with additional equipment

by vp＠drexel.edu

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

18 years, 4 months

Tape Drive & Tape Archival questions...

by compoobah＠valleyimplants.com

(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.

18 years, 4 months

Radio Electronics Issues looking for a good home

by brain＠jbrain.com

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

18 years, 4 months

Update on Classic Computer Rescue

by jrkeys＠concentric.net

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.

18 years, 4 months

x86es

by chrism3667＠yahoo.com

I recently found a set of Win95 floppies. Yeehaw what fun! __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 4 months

OpenVMS

by compoobah＠valleyimplants.com

"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.

18 years, 4 months

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test-drb August 2006