test-drb

test-drb@ccmp.vtda.org

101090 discussions

by cctalk＠emailtoilet.com

Just received my latest eBay purchase. 5 3850 MSS cartridges. 3 of them had no tape inside. Just wondering why. Data destruction? Inquisitive previous owner? 1 of them has an opaque yellow shell instead of the smoked clear plastic. Possible CE cart? Has magic marker printing on it BAD MSS TAG I thought it took 2 of these carts to restore a 3330 disk. One of these carts has a label on it with 'Data Management Conference October 19-21, 1982 San Jose, California. Me thinks the cart was given out as a souvenir. I was also wondering what old mainframe magnetic media cost back in the day. 2311, 2314, 3330 packs. 2314 Data Cell and a 3850 MSS cartridge. And a 7340 tape cassette. I was on a business call to Yellow Cab in Chicago in the early 70's. We entered through the garage and there was a pile of 2311 packs there. They had just installed a 2314 system and the 2311 packs were being thrown out. I asked if I could have an old pack. I chose a yellow 3M pack. Still have it. :)

6 years, 3 months

UniBone (Linux-to-UNIBUS bridge) available

by j_hoppe＠t-online.de

Hi, After half a year I can dump out UniBones again. Seems I lost contact to several interested guys, hope this broadcast helps. Info: http://www.retrocmp.com/projects/unibone Conditions: http://www.retrocmp.com/projects/unibone/283-unibone-getting-one best regards, Joerg

6 years, 3 months

Naked Mini 73-53628 Information

by tangentdelta＠protonmail.com

Hello! I have a Naked Mini system that was used as the controller in a Linotype phototypesetting machine. From what I've been told, the Naked Mini CPU board is Nova compatible. I would like to use the CPU board in my own system, but I don't have enough information to do so. I haven't been able to find any documentation online that describes the backplane interface. I could reverse engineer the backplane using one of the RAM boards as reference, but if the information already exists it would save me a tremendous amount of time. Here is a gallery of the controller cage: https://imgur.com/a/LNkQisq Thanks.

6 years, 3 months

OT - FTGH - U-Matic Tapes

by Kevin＠RawFedDogs.net

On Sun, Jan 19, 2020 at 11:30:31PM +0000, Kevin Parker via cctalk wrote: > A we're all aware members on this list often dabble with other > technologies. In my very aggressive cleanup of my hobby space I came > across a number of U-Matic Video Tapes. If anyone is into this older > video technology and would like these 8 tapes please contact me off > list. (They are physically located in the south west of Victoria, > Australia) I'm interested in the technology, but I'm on the wrong side of the world to add these to my collection. I have a few U-Matic tapes, but haven't found a player yet. To make this slightly less off topic, three of the U-Matic tapes I have are in an SRA Computer Training Library boxed set containing: MVS Concepts and Facilities - Mini-Course 2 - Introduction to Job Processing MVS Concepts and Facilities - Mini-Course 5 - MVS System Programs MVS: JCL Coding - Mini-Course 11 - Requesting Space for DASD Data Sets I found them in my current employer's document library years ago. Any player(s) we had were long gone, so I've never seen them. -- Kevin http://www.RawFedDogs.net http://www.Lassie.xyz http://www.WacoAgilityGroup.org Bruceville, TX What's the definition of a legacy system? One that works! Errare humanum est, ignoscere caninum.

6 years, 3 months

Service manual for Panasonic LF-5010 WORM

by cclist＠sydex.com

I'm looking for a service manual for a Matsushita/Panasonic LF-5010 WORM drive. In particular, cleaning and an exploded parts diagram. TIA, Chuck

6 years, 3 months

Vintage HP test gear and other stuff at Anchor Electronics...

by lbickley＠bickleywest.com

Hi Dan, I sent the same message to the Bay Area Classic list and CCTALK. Folks from the Bay Area got photos. Don't know what happened to CCTALK... Lyle -- On Wed, 29 Jan 2020 13:51:06 -0500 Dan Veeneman <dan at decodesystems.com> wrote: > Hi Lyle, > > At least on the message I received from the list there were no attached > photographs. > > > Cheers, > > Dan > > > On 1/28/2020 7:02 PM, Lyle Bickley via cctalk wrote: > > I was browsing around in the back of Anchor Electronics a couple of days > > ago and came across some clean (but dusty) vintage HP test gear - and > > several very cool large variable resistors. I've attached some pictures of > > both. > > > > BTW: Those of us in Silicon Valley are fans of Anchor - because they carry > > lots of IC's, parts, connectors, etc. Their catalog can be downloaded here: > > https://anchor-electronics.com/ > > > > If you're interested in the HP test gear or large variable resistors > > contact Alicia - for parts, contact any staff member. > > > > Note: I receive NO financial benefit from this email and my only > > relationship with Anchor is as a long time customer. Phone: (408)727-3693 > > > > Best, > > Lyle -- 73 NM6Y Bickley Consulting West Inc. https://bickleywest.com "Black holes are where God is dividing by zero"

6 years, 3 months

UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

by j_hoppe＠t-online.de

Hi Pontus, > This thread makes me very happy. > > I have a KS10 that I'm working on (quite slowly). The PSU is checked out > and working. Then console seems to work, I can deposit/examine to CRAM > and RAM. > > Next step will be to load micro code and I've been mentally preparing to > tackle an RH11 emulator for the Unibone. > > I'll buy one from Joerg as soon as the second batch is ready and me and > my KS10 will happily be guinea pigs. > > And if I can, I'll help with development. I now have UniBones ready to ship. More on PM, kind regards, Joerg

6 years, 3 months

Vintage HP test gear and other stuff at Anchor Electronics...

by lbickley＠bickleywest.com

I was browsing around in the back of Anchor Electronics a couple of days ago and came across some clean (but dusty) vintage HP test gear - and several very cool large variable resistors. I've attached some pictures of both. BTW: Those of us in Silicon Valley are fans of Anchor - because they carry lots of IC's, parts, connectors, etc. Their catalog can be downloaded here: https://anchor-electronics.com/ If you're interested in the HP test gear or large variable resistors contact Alicia - for parts, contact any staff member. Note: I receive NO financial benefit from this email and my only relationship with Anchor is as a long time customer. Phone: (408)727-3693 Best, Lyle -- 73 NM6Y Bickley Consulting West Inc. https://bickleywest.com "Black holes are where God is dividing by zero"

6 years, 3 months

IBM BSC CRC?

by mattislind＠gmail.com

Hello IBM BSC Experts! I am trying to figure out the CRC algorithm used by IBM BSC. I have tried a lot of different settings in crcreveng but not getting a match. I am pretty convinced that the CRC-16 used by IBM was 16 15 2 x + x + x + 1 This would give the polynomial 8005. Anyone against this statement? But what was the initial value? I have two actual messages from equipment employing IBM BSC: 32016CD90240404070032688 and 32016CD90240C84050030D28 >From this document ( http://bitsavers.trailing-edge.com/pdf/ibm/datacomm/GA27-3004-2_General_Inf… ) I get that the CRC calculation is reset on SOH (01h) or STX (02h) and accumulates until and including the ETX (03h). (excluding any SYN (32h) characters). I have tried crcreveng back and forth and I am not getting the CRC bytes right. I think I have tried most things, different bit order, different initial values. But nothing. I also tried the mode in crcreveng where it searches for matches but it always says "no models found". Maybe I am doing something wrong when using crcreveng? Any clues? Surely there are someone out there that has been around for some time and knows this, right? On the topic of crc reveng I tried to verify how it works by using some kind of known value: This article https://stackoverflow.com/questions/23638939/crc-16-ibm-reverse-lookup-in-c has a specific example where a certain data in (75h) with initial value 90f1h gives output 6390h. I tried to get crc reveng to do the same, but failed. There has to be some option I simply do not understand. I tried most combinations. /Mattis

6 years, 3 months

recovering data from old hard drive

by elson＠pico-systems.com

I have dug out an old SCSI hard drive from 1997 that may have some interesting stuff, most especially the source code for the SGI Iris flight sim demo. I have a Linux system with an Adaptec 2940 (aic7880) that has two connectors on it. It SEEMS from some probing that the 50-pin IDC connector on the top of the board is single-ended SCSI (it seems to have mostly grounds on one row of pins). Same for the drive, which is a Quantum ProDrive LPS. The drive spins up and does some seeking right after power-on, so it sounds like it is working. But, I can't seem to find that the drive is being recognized by the aic7xxx driver. So, looking at /proc/scsi/aic7xxx/## I see the device addresses all show just the negotiation settings, and /proc/scsi/scsi just shows my SATA devices but not the real SCSI ones. I have the right cable to plug my old HP scanner into the mounting plate Honda connector, and it shows up fine. I could try getting a Honda to IDC-50 cable, but I thought the IDC50 connector on the board edge OUGHT to work. Does anybody have any suggestions on what to try? Thanks, Jon

6 years, 3 months

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