test-drb

test-drb@ccmp.vtda.org

101090 discussions

by charlesmorris800＠centurytel.net

I ran this ad back in 2015, will try again :) I was going through my board collection and found three PDP-11 boards I've never used in years and don't see a foreseeable need. No idea of condition, but they're visually clean and neat, stored in antistatic bags. The serial cards came out of my working 11/23+ but I've not tested them (since I already have a 16-line card and only 2 terminals). I have (one each): M7957 DZV11 Quad height 4-line serial card M8053 DMV11 "Microprogram Control" synchronous controller card (looks like it was intended for networking with 56k modems) Dilog CQ1610 16-line serial card. Make any reasonable offers. + shipping from US zip 65775. thanks Charles

7 years, 4 months

Adding floppy drives to my PDP-11?

by charlesmorris800＠centurytel.net

I have a PDP-11/23+ with two RL02's in a corporate cabinet but no floppy drives. Also an RXV21 (M8029) card. My PDP-8/A has RX01 drives, and I was hoping just to run the cable over to the -11 when I wanted to use floppies on it. But after some searching, it appears that the RXV21 will only work with an RX02 drive... Just wondering what my options are for hooking up any kind of floppy drives. I could sell the RXV21 and buy/trade for an RXV11 (M7946) instead, to use with the RX01 in the other rack. Or look for an RX02 that won't break the bank - but that won't fit in the corporate cabinet. I do have another cabinet but it's got other rack-mount gear in it at the moment. What about smaller drives (RX50? RX33?)... can those be interfaced to the 11/23+ Qbus? Other thoughts? thanks Charles

7 years, 4 months

Interesting article in Spectrum about IBM's System/360

by ce.murillosanchez＠gmail.com

Building the System/360 Mainframe Nearly Destroyed IBM https://spectrum.ieee.org/tech-history/silicon-revolution/building-the-syst…

7 years, 4 months

Daisywhell typewriter emulating a TTY

by couryhouse＠aol.com

I? remember? in '79? ?a? KSR? Diablo? was? ?the? dream? KSR? printing? terminal? and? ?cost? like? ?3? grand? Oh? how? we? used? to? dream of having one of these? back then! We? do have? one in the museum's? collection...? although? ?have not attempted to power up? to use. Ed# In a message dated 4/10/2019 8:40:58 AM US Mountain Standard Time, cctalk at classiccmp.org writes: On 4/10/19 8:16 AM, Jon Elson via cctalk wrote: > On 04/10/2019 03:38 AM, GerardCJAT via cctalk wrote: >> I would like to emulate a TTY, using a daisywheel typewriter. >> > Well, there are Qume and Diablo.? Diablo was bought by Xerox, so some of > them carry that label. > Most of the stand-alone versions had serial (RS-232) ASCII interface. I've given a couple of the Diablo KSRs (that's what the Hitypes with the keyboard were known as).? I didn't care for them much--no immediacy of sound and keypress--the two seem unrelated. Daisywheel printers are incredibly difficult to get rid of--nobody wants to pay shipping.? I got rid of the last one by throwing in a complete system with it.? Still have a NEC Spinwriter mouldering away. --Chuck

7 years, 4 months

Control Console, but not PDP-10

by dr＠birkel.org

The PDP-10 Control Console sold for $3,650.00. Amazing! Now consider a DSKY. Currently at $27,500.00. Auction estimate: $60,000+ Great provenance! ?The DSKY that saved Apollo 14.? https://www.rrauction.com/bidtracker_detail.cfm?IN=5222 -----

7 years, 4 months

TeleVideo's MmmOST

by pat＠vax11.net

I've been adding a few more blog posts, and put up the first one on what (to me) makes TeleVideo actually interesting - their MmmOST client/server operating system. I hope to get more up soon, but I have a (somewhat lengthy) introduction based on what I've been able to learn about MmmOST: https://worldofvax.blogspot.com/2019/04/televideo-systems-part-v-mmmost.html I'm still looking for TS-800A's and TS-806/816's if anyone has some laying around. It'd be informative to get a real MmmOST service processor up and running. Pat

7 years, 4 months

Daisywhell typewriter emulating a TTY

by mark＠markesystems.com

On 4/10/19 8:16 AM, Jon Elson via cctalk wrote: > On 04/10/2019 03:38 AM, GerardCJAT via cctalk wrote: >> I would like to emulate a TTY, using a daisywheel typewriter. >> > Well, there are Qume and Diablo.? Diablo was bought by Xerox, so some of > them carry that label. > Most of the stand-alone versions had serial (RS-232) ASCII interface. The Diablo was the first one I thought of. I had one for some time, and it was very reliable and produced high quality output. Also much faster than the Teletype, and faster also than the TermiNet 300 I had at the same time. There's currently one on eBay: https://www.ebay.com/itm/263756218024 ~~ Mark Moulding

7 years, 4 months

Daisywheel typewriter emulating a TTY

by james＠attfield.co.uk

>> Date: Wed, 10 Apr 2019 10:38:00 +0200 >> From: "GerardCJAT" <gerardcjat at free.fr> >> To: <cctech at classiccmp.org>, <cctalk at classiccmp.org> >> >> I would like to emulate a TTY, using a daisywheel typewriter. >> One immediately think : " Find an IBM Selectric, a Friden flexowriter or a like " >> But NO, I want something less complex, mechanical wise. >> That's why I want to investigate on daisywheel typewriters. >> I am aware of IBM Actionwriter and Triumph/Adler/Royal Gabriele 9009 that can be used >> as a printer with a dedicated interface BUT that is one way only : Printer only ! >> From my investigation, **** so far ***, KEYBOARD does not send ( upload ? ) any signals. >> ( or a special command code is required ?? ) >> Any suggestion for "others" daisywhell typewriters that could do >> OR someone already went this way ? >> OR any documentation ( even user's manual ) on the dedicated interface : >> ( IF 600 Computer Interface for Triumph/Adler/Royal Gabriele 9009 ) >> ( ???name??? for IBM Actionwriter ) I immediately thought - any reason a Diablo 1650 wouldn't do?

7 years, 4 months

Daisywhell typewriter emulating a TTY

by gerardcjat＠free.fr

I would like to emulate a TTY, using a daisywheel typewriter. One immediately think : " Find an IBM Selectric, a Friden flexowriter or a like " But NO, I want something less complex, mechanical wise. That's why I want to investigate on daisywheel typewriters. I am aware of IBM Actionwriter and Triumph/Adler/Royal Gabriele 9009 that can be used as a printer with a dedicated interface BUT that is one way only : Printer only ! >From my investigation, **** so far ***, KEYBOARD does not send ( upload ? ) any signals. ( or a special command code is required ?? ) Any suggestion for "others" daisywhell typewriters that could do OR someone already went this way ? OR any documentation ( even user's manual ) on the dedicated interface : ( IF 600 Computer Interface for Triumph/Adler/Royal Gabriele 9009 ) ( ???name??? for IBM Actionwriter )

7 years, 4 months

by cctalk＠ibm51xx.net

I rescued a LaserJet 4+ printer that I have been trying to restore. Initially everything seemed ok and it seemed as if there may be just a bit of an issue with paper pickup which I attributed to old paper in the tray. However, soon I started getting the accordion paper jam which led me to replacing all the rollers including the transfer roller. Now the paper flows freely! However, I am having a new problem with printing. When I print, the first 5-10 pages initially come out blank. The printer does not produce any errors or error codes. The blank pages are warm (not hot though) as expected out of a LJ. After closer inspection it seems that the pages are printed SUPER light and gradually get darker the more I use the printer continuously. Eventually the printer starts printing continuous crisp black pages like new. This is a whole page phenomenon (i.e. not gaps, missing areas, etc.). A picture of the effect can be seen on VFC at: www.vcfed.org/forum/attachment.php?attachmentid=52120&d=1554074105 Sorry for the poor quality picture. Things I have checked/tried: 1. Using a brand new NOS toner (according to HP toner does not go bad as long as it was sealed - which this was) 2. Swapping the new transfer roller for the old one - same problem, I have to print out a bunch of pages until the printer starts acting normally. 3. I have checked the HV and an image is being transferred to the drum on the toner cartridge. 4. A visual inspection of the fuser shows it to be ok. Obviously this is happening printing demo pages so it has nothing to do with computer, OS, SW, drivers, etc. Anybody run into this before? Any ideas/suggestions. My Google fu turned up a bunch of discussions on the laser door not being aligned correctly but that would seem to be a more permanent issue i.e. unless you fixed the door no pages should print ever. Mine gets better on its own after a number of pages are printed. Plus the door and spring are fine - I checked them just in case. I tried posting on FixYourOwnPrinter.com but for whatever reason the site was not accepting the question. Any other forums you guys would recommend? TIA! -Ali

7 years, 4 months

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