test-drb January 2022

test-drb@ccmp.vtda.org

118 participants
85 discussions

by stephen.m.pereira.sr＠gmail.com

I am in the process of thinning down my vintage computer holdings, to relieve some of the burden I will leave to my heirs (hopefully not too soon!). I have a working tiny PDP-11/73 system available for sale. I would much prefer not to have to break it down and pack it for shipping, but I will if the buyer agrees to pay for the packing and shipping costs. - - - - - Tiny PDP-11/73 System: H9281-BA backplane and card cage KDJ11-A CPU DLV11-J 4 port SIO MSV11-LK 256KB/128KW memory Emulex UC07 SCSI interface Power-on Reset board from here: http://www.heeltoe.com/index.php?n=Pcbs.Qbus-por SCSI-to-SD hard drive emulator with 4 drives available, RT-11 installed MeanWell RT-125B power supply 4.5 inch AC fan qty 4 GlitchWorks serial cables Spare PDP-11/23 CPU saved as a backup: KDF11-AB CPU RT-11 Pocket Guide RT-11 Mini-Reference Manual - - - - - I am asking $800.00 for the lot. It cost me about that, probably more to acquire it piece-by-piece and assemble it into a working system. smp - - - Stephen Pereira Bedford, NH 03110 KB1SXE

2 years, 11 months

Screws for a Compaq Portable keyboard

by dave＠661.org

Would someone please suggest a suitable screw specification for the Compaq Portable keyboard? My restoration project was interrupted and I managed to lose the screws. -- David Griffith dave at 661.org A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

2 years, 11 months

DECnet/10 manuals?

by paulkoning＠comcast.net

I'm looking for a manual I can't find on Bitsavers: a DECnet/10 programming manual. The reason: trying to read PSTHRU.MAC and realizing that I was trying to understand DECnet-10 code while reading the DECnet-20 programming manual. Oops. paul

2 years, 11 months

Tiny PDP-11/73 system for sale

by stephen.m.pereira.sr＠gmail.com

I am in the process of thinning down my vintage computer holdings, to relieve some of the burden I will leave to my heirs (hopefully not too soon!). I have a working tiny PDP-11/73 system available for sale. I would much prefer not to have to break it down and pack it for shipping, but I will if the buyer agrees to pay for the packing and shipping costs. - - - - - Tiny PDP-11/73 System: H9281-BA backplane and card cage KDJ11-A CPU DLV11-J 4 port SIO MSV11-LK 256KB/128KW memory Emulex UC07 SCSI interface Power-on Reset board from here: http://www.heeltoe.com/index.php?n=Pcbs.Qbus-por <http://www.heeltoe.com/index.php?n=Pcbs.Qbus-por> SCSI-to-SD hard drive emulator with 4 drives available, RT-11 installed MeanWell RT-125B power supply 4.5 inch AC fan qty 4 GlitchWorks serial cables Spare PDP-11/23 CPU saved as a backup: KDF11-AB CPU RT-11 Pocket Guide RT-11 Mini-Reference Manual - - - - - I am asking $800.00 for the lot. It cost me about that, probably more to acquire it piece-by-piece and assemble it into a working system. smp - - - Stephen Pereira Bedford, NH 03110 KB1SXE

2 years, 11 months

Sun 3/260 on eBay; Boston area

by pschow＠gmail.com

Local pickup only. https://www.ebay.com/itm/265510502961

2 years, 11 months

seeking Motorola M68MM01A2 documentation

by chrise＠pobox.com

I have quite a few Motorola Microsystems Exorciser boards including this 6800 single board computer for which I am lacking any documentation. I've seen a brochure in Al's collection on Bitsavers but haven't found any details that might discuss jumper settings or even better, a schematic. Wondering if anyone would have a user manual or other detailed docs for this board? M68MM01A2 -- has 6800 CPU, 6875 1.0 MHz clock generator, 6850 ACIA and MC14411 baud rate clock, (4) EPROM/ROM sockets and (2) 6821 PIA sockets with the 86-pin Exorciser edge connector. I'm interested in seeing if I can minimally modify it to have a similar memory map to the Altair 680 so that the Altair's PROM monitor could run on it. Thanks! Chris -- Chris Elmquist

2 years, 11 months

AOL diskettes

by athornton＠gmail.com

> From: Grant Taylor <cctalk at gtaylor.tnetconsulting.net> > > I wince at the idea of running with QIC tape. But my experience is with > QIC-80 tapes of the '90s which were so unreliable as to be in the same > category as AOL floppy disks during the late '90s around the transition > to CD-ROMs. As in I would trust an AOL floppy disk to better hold my > data for a week than I would a QIC-80 tape to hold data for a month, > much less a year. ...and I didn't even trust an AOL floppy to go from > computer to computer for 5 minutes. -- Talk about a race to the bottom > for quality. I wish I'd kept some. I had some AOL CDs from slightly later that made decent coasters for decades. Although I guess with the shutter, the floppy wouldn't really have made a very good coaster. Adam

2 years, 11 months

IBM 6731 Diskette Module

by organlists1＠sonic.net

Is anyone familiar with the IBM 6731 Diskette Module from around 1984 which gave the IBM Electronic 85 and 95 Selectric Typewriters the ability to store created documents to a 5.25" floppy diskette? There was also a 5.25" diskette which was nicknamed "IPL" for "initial program load", and an interface board which was installed into the typewriter and was referred to as the "IBM Typewriter Modularity Option". I do not have any images of the IBM 6731, but I do have an image capture >from the installation and operations manual, posted here: https://www.dropbox.com/s/us8aely530s8p3a/6731diskettemodule.jpg?dl=0 You do not need a Dropbox account to view the image. Simply click on the X of the login pop up and it will disappear. Unfortunately, the only copy of this product manual I ever found was on eBay. I purchased it last month, paid USPS priority mail shipping with tracking and the post office lost it. :/ Thanks Don Resor

2 years, 11 months

IBM 6731 Diskette Module

by organlists1＠sonic.net

2 years, 11 months

Looking for CONAR CCTV TV camera CONAR WERE KITS FROM NATIONAL RADIO COMPANY

by couryhouse＠aol.com

Looking for CONAR CCTV? TV camera CONAR WERE KITS FROM NATIONAL RADIO COMPANY want books parts assembled units whole units? broken units-- I lust for one in the box un-assembled too! anything anything anything? related? toi this? camera? collecting up stories and folklore from others that may have? built one, owned one or? even just lusted? for? one!reply using the? following? ??SMECC CONAR TV CAMERA HISTORY PROJECT?? ? ?as? email reply? title? and? send? to?couryhouse at aol.comdrop me a line off list? with? first? word? CONAR? in subj. line? thx....Thanks in advance and stay well....Ed Sharpe? Archivist? for? SMECC

2 years, 11 months

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test-drb January 2022