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101090 discussions

What's the rarest or most unusual computer-related item do you own?

by rickb＠bensene.com

A selection of some of my more unusual computer-related stuff: - A Tektronix 4132 Unix workstation using a National 32016 CPU and a 4.2bsd port called UTek - A Digital Equipment PDP 8/e system with 2 RK05 drives, high speed paper tape reader/punch, RX01 Dual 8" floppy drives, 16K of DEC core memory(commonly runs with a 32K NVRAM board), 2 serial ports, EAE, RTC, Memory Extension/Timeshare board, Diode boot board (RK05 boot) - Wang 300-series calculator field service parts kit (two wooden briefcases) - Friden 6010 Computyper Diagnostic Console - Friden Electronics Training Course manuals (1960s) - Wyle Laboratories WS-02 punched card programmable electronic calculator (1964) - Busicom 207 punched card programmable electronic calculator - Altair 8800 with Altair dual 8" disk drives - IMSAI 8080 kit built in high school as a school project in 1976/1977 - Televideo Personal Terminal - GE transistorised current loop acoustic coupler modem (110 baud) - Hewlett Packard 9100A and 9100B programmable electronic calculators - Tektronix mini-Board Bucket computer and many boards for it (EPROM Blaster, TI TMS9918-Based Video Board w/RTC, SASI Interface, 6809 CPU, 6809 ICE CPU. 32K Static and 64K Dynamic RAM Boards, 300-Baud Modem Board, 5 1/4" Floppy Controller - SWTPC TV Typewriter - A large format (4'x5') Summagraphics digitizing tablet with GPIB interface - A Tektronix 4052 desktop computer (bit-slice implementation of Motorola 6800 CPU) with very rare RAM Disk module installed under keyboard - Wang Laboratories dual-cassette drive for 700 series calculator - An old fluorescent-lighted, two sided sign advertising Denon electronic calculators - Some original Digital Equipment System Modules (Used by DEC for making some of their early computers) --- Rick Bensene The Old Calculator Museum http://oldcalculatormuseum.com

8 years, 8 months

PDP-11/34 rails?

by jnc＠mercury.lcs.mit.edu

> From: Pete Turnbull >> I'm not the sure BA11-K (10-1/2" box) mounted 11/34's could do the >> rotate thing > The two I've had .. both rotated. Ah, right you are - brain fade, late at night. I went looking in my BA11-K collection, and found a couple that do have the rotate - the part that bolts to the box has a huge 3/4 circular plate, and a metal strip that runs to the front of the box with a huge (~3") handle bar at the front, which releases it to turn. I have this bit set that the outer slides (the parts that bolt to the 19" rack) are the same for the rotating inners, and the non-rotating ones (as used on, e.g., the RK05 and the BA11-F). > I've also seen BA11-K's with narrower (height-wise) slides, in some > sort of bright metal finish. I don't know who made those. I went and had a look at some, but there is no name, or number, anywhere on them. BTW, these also rotate. Noel

8 years, 8 months

Cromemco on Craigslist in Vermont

by tosteve＠yahoo.com

Cromemco on Craigslist on Vermont/ https://vermont.craigslist.org/search/sss?query=cromemco&sort=rel Victor 9000 in New Hampshire: https://nh.craigslist.org/search/sss?query=victor%209000&sort=rel Atari Mega ST in RI: https://providence.craigslist.org/search/sss?query=atari%20mega&sort=rel

8 years, 8 months

2 more tapes Tek 4300

by pete＠petelancashire.com

https://goo.gl/photos/vogHGNSzsQrEeapA7

8 years, 8 months

2nd batch of QIC tapes

by pete＠petelancashire.com

https://goo.gl/photos/UXzDPo8WGVFNr1mA6 10 cartridges this time, all for SUN -pete

8 years, 8 months

PDP-11/34 rails?

by derschjo＠gmail.com

Hi all -- I'm looking to rack up my PDP-11/34 so I can get it off my bench. I'd like to track down something similar to (if not exactly) the original rackmount rails (the ones that allow the chassis to pivot 90 degrees so you can deal with the backplane easily), but I'm not sure what the original part number or manufacturer was. Anyone have this information handy? Better yet, anyone have a spare set of rails handy? Thanks as always, Josh

8 years, 8 months

Help needed for Unix anniversary in 2019

by wkt＠tuhs.org

Hi all, some of you may know me as the guy who runs the Unix Heritage Society and the archive of old Unix systems: https://minnie.tuhs.org/cgi-bin/mailman/listinfo/tuhs, http://www.tuhs.org and http://www.tuhs.org/Archive Mid-year 2019 is the 50th anniversary of the creation of Unix and I've been quietly agitating for something to be done to celebrate this. Up to now, there's been little response. The original Unix user's group, Usenix, will hold its Annual Technical Conference on the west coast of the US at this time, so it would make sense to do something in conjunction with this conference. Some suggestions: - a terminal room with a bunch of period terminals: ASR-33s, -37s, VT100s, VT102s, VT220s - these connected to emulated Unix systems either locally or via a terminal server and telnet to remotely emulated systems - some graphical terminals: Sun pizza boxes, a Blit would be great - if possible, some actual real PDP-11s, VAXen - emulated systems: V1 to V7 Unix, 32V, the BSDs etc. In fact there are plenty of Unix versions that we could run in emulated mode. - Unix of course was one of the systems used to implement the Arpanet protcols, so it would be interesting to get some of the real/emulated systems networked together - how about an emulated UUCP network with Usenet on top of it, and some mail/news clients on the emulated systems. - retro workshops/tutorials: how to edit with ed, using nroff, posting a Usenet article, dealing with bang paths. I'm proposing to gather a bunch of people to start the ball rolling on the technical/demonstration side. We'd need people: - with terminals, portable PDP-11s and VAXen, Sun boxen - prepared to set up emulated systems - who can help bring the networking (UUCP, Usenet, Arpanet) back to life - willing to write and run workshops that show off this old technology - to help set up terminal servers and all the RS-232 to telnet stuff Some of this we can start doing now, e.g. rebuild an emulated Arpanet, UUCP, Usenet, get emulated systems up, build front-end telnet interfaces. Is there anybody willing to sign up for this? I think once we have some momentum, we can tell the Usenix people and get some buy-in from them. Post back and/or e-mail me if you can help. Thanks, Warren

8 years, 8 months

Compaq Portable 286 and Portable III - IDE drives?

by jules.richardson99＠gmail.com

Just checking here, as someone told me that this is the case, but do the Compaq Portable 286 and Portable III take stock 40-pin IDE hard drives? I just wanted to make sure that they weren't expecting something that might be a bit non-standard before I go trying to find modern replacements for a pair of failing disks. Assuming that an enormous modern(ish) drive is OK, are there any other gotchas involved in configuration and formatting? Obviously I don't need a partition bigger than a few tens of MB, but perhaps there are things to keep in mind when fitting a drive that's most likely to be getting on for a thousand times the capacity of the original. cheers Jules

8 years, 8 months

Model 16 board set

by bill.gunshannon＠hotmail.com

I have a set of boards from an original Tandy Model 16 (long before the 6000) Worked when removed from a system with a dead CRT but has been sitting around for more than 10 years and I have no way to test them. Make an offer and let's see if we can keep them out of the landfill. Plan on probably $10 for Priority Mail. bill

8 years, 8 months

Model II Technical Reference Manual

by bill.gunshannon＠hotmail.com

I have a Tandy Model II Technical Reference Manual available for sale. It is in one of those clunky brown Tandy binders so it will not fit in a Priority Mail Envelope so will need to go in a box. I figure $30 will cover it all nicely. Anybody interested? bill

8 years, 8 months

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