test-drb June 2019

test-drb@ccmp.vtda.org

151 participants
141 discussions

by Tim＠Rikers.org

Someone on this list, I don't remember who, asked me if I was interested in this, and then dropped it off. I've not gotten around to doing anything with it, and I could use the space back. If anyone is interested, holler. HP 2250 Measurement & Control Processor Pictures are the same ones that came with it. Photographer unknown. https://photos.app.goo.gl/XjEj8E8vQ8KX9xcg8 If your interested in picking it up, email me directly, please. If you have more information to share, respond to the list. :) If anyone knows more about what this is, I'd be interested to hear. I got these links from Mike on the SIMH list: http://www.hpmuseum.net/display_item.php?hw=986 http://www.hpmuseum.net/document.php?hwfile=5124 http://www.hpmuseum.net/document.php?hwfile=4579 Mine is the "2250M" version. Apparently this heavy beast is "mobile" because it has wheels on it. :)

4 years, 11 months

IBM PC-RT 6150 looking for help

by peter＠turczak.de

In preparation of moving, I dug out a IBM 6150 PC-RT from my basement. This was my first proper computer as a child, which was donated to me by a local company that upgraded their CAD system. So it would be interesting to bring it back to life. The machine is equipped with an 320 MB ESDI, 10 MBit Baseband Ethernet adapter and an IBM Megapel graphics adapter. This baby was quite a sight in 1993 when I got it, with its elegant console font designed by Knuth. Now I'm trying to revive the old machine, but there are some hassles: The hard disk seems to be stuck or the drives electronics are broken, it does not spin up. As these drives are quite rare, I'm looking for the SCSI card (Model 6lX700l). Is it right, the PC-RT can boot off SCSI? While I made images of the install floppies, it seems the AIX base system 2.0.0. disk #1 is missing. The AIXWindows floppies where not imaged and seem to be unreadable. Otherwise all VRM/extendes svcs, etc floppy images are at hand. So there is a big pile of problems with this box, maybe someone can help me out with parts and floppy images? Any help would be greatly appreciated. Peter

4 years, 12 months

Recovering the ROM of an IBM 5100 using OCR (among other things)

by jnc＠mercury.lcs.mit.edu

> From: Liam Proven > This is *epic*. Indeed. I was blown away by the complexity of his technique for reading the digits. I can't believe there wasn't a much easier technique, though, e.g. using a logic analyzer and a small program to read through the ROS! Perhaps the challenge of doing it his way entertained him, though, like George Mallory's famous line about climbing Everest. Noel

5 years

Latest Additions to the Virtual Warehouse of Computing Wonders Sale Inventory

by sellam.ismail＠gmail.com

Greetings Folks! I have finalized the latest batch of items added to the inventory of my Virtual Warehouse of Computing Wonders, and here it is: Commodore 64 Exatron MM800 Internal Memory IBM PCjr Power Expansion Attachment IBM 74F3465 The 3270 Connection Polaroid PerfectData DS/DD 8" floppy disk (10-pack) Xidex Precision DSDD 8" Floppy Disks (10-pack) Diablo Printwheel - APL 10 Diablo Printwheel - Courier 10 Diablo Printwheel - European Elite 12 Diablo Printwheel - OCR A Diablo Printwheel - Pica 10 Diablo Print Ribbon (Carton of 12) SmartPrint Printer Sharing Network Add-on Computer Module Symantec Think C for Macintosh 6.0 (Upgrade) Hayes Personal Modem 1200 Gravis Mac MouseStick II Apple Power Mac Processor Upgrade (APMPU) Orange Micro OrangePC MS-DOS Coprocessor Radius Full Page Display SE Corvus Systems Macintosh OmniDrive User Guide Corvus Systems Qbus Interface RT-11 System Reference Card RT-11 System Reference Card Convergent Technologies WK-100 WorkSlate Convergent Technologies WorkSlate Travel Task Ware Radio Shack TRS-80 Model 100 Portable Computer Radio Shack TRS-80 Model 100 Cassette Interface Cable TRS-80 Model 100 Calculator TRS-80 Model 100 Bar Code Drivers TRS-80 Model 100 Bar Code Writer TRS-80 Model 100 Executive Calendar TRS-80 Model 100 Function Plotter TRS-80 Model 100 Personal Finance TRS-80 Model 100 Portable Computing with the Model 100 TRS-80 Model 100 SCRIPSIT 100 TRS-80 Model 100 StarBlaze 100 TRS-80 Model 100 Tandy Code Tandy 102 Owner's Manual/Applications and BASIC Reference Guide IBM Personal Computer PCjr BASIC Reference IBM Personal Computer PCjr Guide to Operations Hands-On BASIC for the IBM PCjr AST VGA Plus Tall Tree Systems AT3-P w/JLaser-3 daughterboard Western Digital WD7000-ASC FASST2 SCSI Controller Ziatech IEEE 488 Interface for PS/2 Computers Everex 24E+ External Modem Epson FX-86e/286e Printer User's Manual Citizen Color Ribbon Okidata Okimate 20 Plug 'N Print for IBM PC and Compatibles Okidata Tractor Feed Option Kit (boxed) Memorex Epson MX-80 Printer Ribbon 3M DS,HD 5.25" Diskettes (10-pack) Dysan 100 MD2HD floppy diskette 10-pack Ohio Scientific 5.25" Mini Floppy Diskette (10-pack) Verbatim Datalife SS/DD 5.25" Minidisks (7-pack) Epson E95D0U External 5.25" Disk Drive Compaq MS-DOS Version 3 Reference Guide DEC PDP-8/L Instruction List reference card Osborne dBase II Version 2.3b (manual only) Altera MAX+plus II Programmable Logic Development System FHR Industries 1200 Intelligent Modem Commodore 64 HP 92220R HPIB Right Angle Cable (1ft) HP10833B HPIB Cable (2m) SunRize Industries Perfect Sound Timex-Sinclair 1000 Sinclair ZX81 case Apple Macintosh Plus (Platinum) Apple Macintosh SE w/Targus Carrying Case (Those are two different Commodore 64 units, one has a case "variation".) Links to the newly arrived items are here: https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi… I have discovered the myriad of Facebook vintage computing groups, so I have begun posting my sale lists there as well. However, I will always post notifications of new lists here and on the VCFed forums 24 hours before I unleash them on the FB groups, which results in a deluge of activity. In this way, I give you guys first stab at the action on the new stuff before the hordes descend upon it. You are welcome. As always, please contact me directly by e-mail to inquire about an item. Thanks! Sellam

5 years

IBM PS/2 Model 70 or compatible floppy drive wanted (Or help with current one?)

by mokuba＠gmail.com

Hey all, i'm having a fair amount of trouble with my PS/2's floppy drive... wanted to back up my BBS and none of the disks i put in would read or format! Oddly though, it WILL boot a disk that's inserted on power-on. I hear it try and hit the disk a few times while in dos repeatedly before failing with the R/A/F options ... and format tries to read it, then goes attempts to format it, and can't find sector 0 ..... I'm really confused about those symptoms since it boots the only bootable disk I had on hand - ironically spinrite 6 (I'm aware of how useful it is...) - so i'm looking at replacing it ... or figuring out what's wrong with it that it can boot a disk just fine, but not use one while in DOS ? .... and by wiggling the floppy a bit I just got it to format a disk while in the ... drive, and now it's making the noise it did before and stalling occasionally. Perhaps the disk just isn't catching fully? -- Gary G. Sparkes Jr. KB3HAG

5 years

Latest Additions to the Virtual Warehouse of Computing, > Wonders Sale Inventory

by marvin＠west.net

FYI, it is unlikely there would have been a VCF without Sellam. He basically started it (with his own money) and continued through the first 10 years or so. Many others help support VCF (and continue to do so even though Sellam backed out some number of years ago.) I, for one, fully support Sellam in his effots to move out his inventory, and have never seen him sell anything at 10x prices. Marvin > From: Randy Dawson <rdawson16 at hotmail.com> > > Anybody try business with this guy? > His prices are 10X off the chart

5 years

DNS and Registrar

by cctalk＠gtaylor.tnetconsulting.net

On 6/27/19 12:53 PM, jim stephens wrote: > They don't have to be combined. Agreed. I've been running DNS servers for about 20 years. I /always/ prefer to run my own DNS servers if I can. I have never run across a situation where I was unable to do so for /technical/ reasons. I have had clients that /chose/ to /not/ host their own DNS for a /business/ reason. > I have a friend running his and my DNS on a server at his house with two > DSL feeds for good measure, one is primary DNS for our domains, second > one is published as the secondary. *nod* I'd worry about DSL circuits and stability for DNS. But it will probably work > 98% of the time. If you're comfortable with it, more power to you. I would likely do something more like I'm doing now, run the master name server (MNAME field in the SOA record) on the DSL and have somebody else with a more robust connection (DSL had issues where I'm from) do a slave zone transfer and be the listed Name Servers (NS records) that the world talks to. I actually do that now with my VPS being the MNAME server and my VPS provider doing slave zone transfers off of me. Note how the registrar is not part of that mix. ;-) > The biggest thing to watch for is the lax rules for transfering > domains.? There was a problem with that, but most registrars allow locks > now that impede the movement of domains w/o a bit of work. That sounds like you're talking about moving domains between registrars, which is decidedly different than and independent of where DNS is hosted. Admittedly the registrar has to point (delegate) to the DNS hosting provider. But it's fairly easy to move domains between registrars without even logging into a portal at the DNS host. > Used to take a couple of emails to highjack a domain, as there wasn't > even a notification to verify that the transfer process email was > requested by the owner. Ya. Registrars have had some deficiencies over the years. I think they are getting better. > You are strongly encouraged to use a third party "professional" DNS > service, but it only really need to be up reliably. ~whistling~ ? ~quiet~ ? I'm sorry, did you say something? No. Never mind. I'll go back to what I was doing. ? ~whistling~ I mean that as a joke. I let a LOT of what companies that are trying to sell to me go in one ear, sanity check it, and then go out the other ear. I'm of the opinion that a static IP is the biggest requirement for /most/ DNS service. I.e. somewhere to have the registrar delegate the DNS to. Beyond that, I'm happy to delegate sub-domains to people on dynamic IPs if they want them. It's possible to put DNS a LOT of places that don't qualify as "Best Practice". Most of them will work most of the time. > We have the dual providers for the node my friend runs, as we know from > the phone companies and providers that though the DNS is over the same > 12 pair wire into his house (another trick), the CO actually has the > DNS switches on different racks and UPS's. Which isn't a bad precaution. That's probably okay for most things. But it's still subject to Backhoe Bob and the fade that he can induce. That's why I have my master that I can do anything and everything I want to, and outsource to slave secondaries. Linode, my VPS provider, has five different DNS servers that (I belie) are geographically diverse. It will be quite a bit harder to take out all five of their DNS servers. Plus, I don't have to pay for connectivity in five different locations. ;-) I'm curious, you said DSL. But that could be anything from 1.5 Mbps ADSL to SDSL to VDSL. Each of which have different capabilities and SLAs. Other than the backhoe fade taking out both connections at the same time, higher quality DSL with SLAs is probably okay to do. I think the official recommendation for big (think root level) DNS servers is to have each server in a different network, where network is defined as /24 (or larger), preferably under different ASNs. But that's not a /requirement/, especially for smaller DNS operators. > thanks You're welcome. -- Grant. . . . unix || die

5 years

Anyone have an Ethernet interface card for an AT&T 730 terminal?

by aek＠bitsavers.org

I just finished taking pictures and dumping the firmware from a 730X terminal but it turns out it has a Starlan and not an Ethernet interface. It would be nice to get a firmware dump from an Ethernet card. A start of a 630 driver is in MAME. http://bitsavers.org/pdf/att/730/730X It also appears the keyboards for the 630 and 730 aren't backwards compatible with the other 6xx products and the 5620. 5620 keyboards need -12v which the 630 or 730 don't supply, and the 610 keyboard doesn't appear to work either. Josh took a couple of pictures of his 630 keyboard and even though they look similar, the earlier keyboards were made by Teletype and the 630 is made by Keytronic.

5 years

Identifying some boards

by kylevowen＠gmail.com

I picked up these boards many weeks ago, but haven't photographed them until recently. Some of them are pretty disgusting, but some of the others look alright. Anyone have any idea what these came out of? Some are labeled Gould, others are labeled Encore. http://imgur.com/a/d9iK9qb Thanks! Kyle

5 years

OT: the end of Dyn DNS

by chd＠chdickman.com

Now that Dyn has been absorbed by Oracle I need a new DNS service for my vanity domain. I welcome suggestions for a replacement provider. -chuck

5 years

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test-drb June 2019