test-drb

test-drb@ccmp.vtda.org

101090 discussions

by robert＠irrelevant.com

Hi. Has anybody got a copy of this? It's a viewdata host program. https://www.cbronline.com/news/applied_telematics_adds_minitel_access_from_… Even better would be an installed database.. Ta. Rob. -- Sent from a mobile device. Please excuse brevity or spoiling mistooks.

7 years, 6 months

More facets of hard disk recovery (SA1000, RD53) and emulation

by djg＠pdp8online.com

I have made a SA1000 adapter board for my MFM reader emulator. I did a small run which seems to work so if you are interested email me to get in on the next order. Prices may get a little better if I get enough orders. http://www.pdp8online.com/mfm/ http://www.pdp8online.com/mfm/sa1000/sa1000_usage.shtml I have used it for reading Shugart SA1004 and Quantum Q2040 drives. Another has used it to replace drive in a TRS-80 Model II 8 Meg drive unit. Some other items that may be of interest: Dealing with stuck head problem with Quantum Q2040 drives http://www.pdp8online.com/q2040/q2040.shtml Using a DAC to pull the head servo to recover otherwise unreadable data >from DEC RD53 drive. Also procedure tried for Q2040 but data had been erased so not successful. http://www.pdp8online.com/mfm/head_servo/

7 years, 6 months

Last call: Exhibitors for VCF PNW 2019

by mbbrutman＠brutman.com

If you were thinking of joining us for VCF PNW 2019 in Seattle then now is the time to let me know! The event is March 23-24th (Saturday and Sunday) with setup the day before. We still have room for some more exhibits if you are interested in joining us. If you are going to join us I need to know by Friday, February 8th. If you have told me you were coming but did not complete the registration form, well, now is the time ... A description of the event can be found at http://vcfed.org/vcf-pnw . General information for exhibitors including pictures from last year, a link to the registration form, and a FAQ can be found at http://vcfed.org/wp/vcf-pnw-exhibitor-registration/ . Also, yell at me directly if you have questions Thanks, Mike mbbrutman at brutman.com or michael at vcfed.org PS: Not exhibiting at the event but interested in unloading some tonnage? We're doing a consignment area again, and that's open to everybody. Now is a good time to start cleaning and testing things that you might want to sell.

7 years, 6 months

tape transport drive belts

by binarydinosaurs＠gmail.com

Evening folks, I?m bringing a Sharp MZ80B back to life and have so far fixed a horizontal collapse problem on the video board meaning I can see what it?s prompting for at boot. I remember when I first got this machine back in 2003-ish I dismantled it and discovered some of the tape transport had melted and gummed up the automatic head mechanism. Fast forward* 15 years and I have the transport in bits again on the bench and I can see that one belt has melted and another is on the way to collapse. Did we ever find a reasonable source of replacement belts? I know a couple of collector friends with 3D printers have printed replacements but this is new tech and I need old tech :) Cheers! *sorry, pun intended -- adrian/witchy Owner of Binary Dinosaurs, the UK's biggest private home computer collection? t: @binarydinosaurs f: facebook.com/binarydinosaurs w: www.binarydinosaurs.co.uk

7 years, 6 months

DEC TKZ10 Tapes

by bill.gunshannon＠hotmail.com

Does anyone have any DC6525 tape cartridges they would be willing to part with? One of the Expansion boxes on my VAX has a TKZ10 but none of the older QIC tapes I have can handle the format from this drive. bill

7 years, 6 months

Tandy RS DWP-220 printer equivalent?

by seefriek＠gmail.com

My google-fu is failing me; forgive me. Is the Tandy DWP-220 daisy-wheel printer a rebrand/OEM of someone else? In particular, can I find ribbons and font wheels under another manufacturer? KJ

7 years, 6 months

advice / suggestion wanted PDP 11/40 only boots XXDP, not RT11

by billdegnan＠gmail.com

My PDP 11/40 suddenly lost it's ability to boot RL02 disks except the XXDP disk. I have two drives, both boot up an XXDP (I have more than one) just fine, but any formerly-working RT-11 (v 5, 5.1, 5.3) no longer boots, it just hangs. I have been troubleshooting, running the 11/40 XXDP tests, but they seem to just hang too. And I am not a big fan of XXDP anyway. I have cleaned the drive heads, the disks are ok. I can load BASIC just fine from PDPGUI "tape" through the serial card (M7800) Any off the cuff suggestions why this specific issue would arise? Power seems ok, looking for dumb reasons that I missed. I have swapped out CPU cards, does not make any difference. I am pretty sure it's a UNIBUS interference issue, at least that's my working theory. I suppose there may be an RT-11 boot instruction call or routine of the CPU that XXDP does not exercise explaining why XXDP boots. Maybe RAM locations. In the end I just have to work through everything, but I am open to suggestions to help cut down the time spent diagnosing the problem. Thanks in advance, I will be around tonight (East Coast USA Time) Bill

7 years, 6 months

11/70 - original or 570 model more desirable?

by billdegnan＠gmail.com

Random question would you prefer having, if you had to pick only one, the original PDP 11/70 or the newer "blue cabinets" PDP 11/70, assuming both were complete configurations with racks of storage etc as they would have been sold, more or less. Assume space and power are not issues, consider just the machine itself. Bill

7 years, 6 months

early PDP-11/45 info sought

by fritzm＠fritzm.org

Those reading through the recent "PDP-11/45 RSTS/E boot problem" thread here will know that I've gotten to some corners of my 11/45 CPU now that don't match up with the commonly available engineering drawings. My /45 is an early serial number (#152). So far I've verified hardware differences on at least my M8100 and M8105 cards and spares, relating to parity error abort handling. I would really like to track down any of the following resources: - PDP 11/45 system engineering drawings *earlier* than those currently available on bitsavers (Jun '74) - Any PDP 11/45 backplane wire list (what looks to be a wire list in the currently available engineering drawings is actually only a breakdown of the power harness.) - PDP 11/45 ECO information, particularly the following: M8100 00003 M8103 00005 M8105 00005 M8106 00007, 00008, 00012, 00012A M8110 00008 KB11-A 00015 Bitsavers seems to have a DEC-O-LOG for M8105, but this does not contain specifics on cuts and jumps for ECO 00005, referring only to the associated "kit". DEC-O-LOGs for the other processor boards are missing. If anybody thinks they might have any of this info squirreled away anywhere, I'd really love to find out more about it! Parts of the ECO's are pretty easy to figure, just by comparing the state of my existing boards to the '74 drawings. But other parts not so much... thanks much, --FritzM.

7 years, 6 months

Plug+Play for PDP-11/40 panels - BlinkenBone update

by j_hoppe＠t-online.de

Hi guys, There is now a special 11/40 adapter board for the BlinkenBone system. With that you can plug a physical 11/40 panel to the extended SimH running on a BeagleBone. Surprisingly there was some demand for the 11/70 panel adapter, so adding the '40 panel may be worth mentioning. There is no own '40 documentation, see again the 11/70: http://www.retrocmp.com/projects/blinkenbone/physical-pdp-11-70-panels/288-… If you want it: I made the '40 ?10 cheaper then the '70. Entry to far-too-many web pages here: http://retrocmp.com/projects/blinkenbone All in all there are now at least 6 different (but compatible) ways to get a blinking PDP-11's with SimH. - Connect a real 11/40 or 11/70 panel. http://retrocmp.com/projects/blinkenbone/physical-pdp-11-70-panels - Run the virtual Java panels for 11/20, 11/40 or 11/70, also with play isntruction for the physical ones: http://retrocmp.com/projects/blinkenbone/simulated-panels/253-blinkenbone-s… http://retrocmp.com/projects/blinkenbone/simulated-panels/254-blinkenbone-p… http://retrocmp.com/projects/blinkenbone/simulated-panels/252-blinkenbone-p… http://retrocmp.com/projects/blinkenbone/simulated-panels/247-blinkenbone-s… http://retrocmp.com/projects/blinkenbone/simulated-panels/243-blinkenbone-p… Download & run from github https://github.com/j-hoppe/BlinkenBone/releases - get Oscars Vermeulens PiDP11 http://obsolescence.wixsite.com/obsolescence/pidp-11 I will be at VCFPNW in Seattle with that stuff. kind regards, Joerg

7 years, 6 months

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