test-drb June 2012

test-drb@ccmp.vtda.org

193 participants
237 discussions

by ray＠arachelian.com

Courtesy of John Woodall of http://VintageMicros.com direct link: http://lisa.sunder.net/TwiggySchematicsRight.pdf (available on this page: http://lisaem.sunder.net/books.html ) Thanks John!!!

12 years, 6 months

ebay: 70 Commodore PETs for sale (Boise, ID)

by tosteve＠yahoo.com

Not my auction, but awesome! 330748180850

12 years, 6 months

Polaroid ProPalette 8000 Film Recorder in Richmond, VA area

by d235j.1＠gmail.com

So I was digging around looking for one of these (an 8000-line CRT-based film recorder, basically it's used to print digital photos to photographic film), and I managed to find one being liquidated. Unfortunately they will not ship, and I'm in Philadelphia, which is rather far from Richmond. So if anyone wants to pick this up, feel free - $20 or so is quite a deal, as this model can fetch $350 or so on eBay. http://www.govdeals.com/index.cfm?fa=Main.Item&itemid=18024&acctid=226 It hasn't sold the first time they listed it (at $35) so I don't expect it to go for much. I'm willing to pay the cost, and for shipping and the trouble, but if you're doing photographic stuff, by all means use it. I just don't want to see it get dumped or recycled, like most unsold surplus items end up. Thanks! --David Ryskalczyk

12 years, 6 months

Wanted: Original Kaypro 16 floppies

by james＠slor.net

Thought I'd try one more time. Anyone? -----Original Message----- From: James [mailto:james at slor.net] Sent: Tuesday, June 05, 2012 12:41 PM To: cctalk at classiccmp.org Subject: Wanted: Original Kaypro 16 floppies I've been looking for an original floppy disk set for my Kaypro 16 (not 16/2 or any others) for a while now. Anyone on this list have a set to part with? Or, worst case, anyone have a set they could copy/image for me? Thanks! James

12 years, 6 months

Nova-4 memory jumper settings (was Re: Nova-4 / Eclipse S/120 power connector)

by iamcamiel＠gmail.com

On Sun, Jun 17, 2012 at 6:30 AM, Jay Jaeger <cube1 at charter.net> wrote: > Update. I did just find some DG Doc, in the Nova 4 16 Slot Illustrated Parts > Breakdown (016-000940-00) that I have. > > Curiously, for 120v, they show Hot going to Pin *** 4 ***, but the plug > otherwise wired exactly as I described in my previous message. ?But, I think > that is in error, and one should wire hot to pin ***3 *** for 120V. > > For 240V they show Hot going to pin 3, neutral to 9, and ground to 5 (and > 6). ?For 240V the only interconnects they show are from 1 to 11 and from 4 > to 7 (as opposed to 4 to 8 for 120V). ?Again, I think that hot pin 3 is in > error, and (probably) for 240V, one should wire hot to pin 4 BUT I HAVE NO > WAY TO VERIFY THIS. > > HOWEVER, I did go back and re-verify what I wrote earlier on both my Nova/4 > and (now) my S/140 as well and both have pin 3 as HOT. ?All 120V of it. > > Other than that, the interconnections I described below match the doc. ?The > only variance is between hot for 120v (I say pin 3, they say 4) and hot for > 240v (they say pin 3). > > Go figure. ?(Unfortunately, I don't have power supply drawings that I can > use to arbitrate). Thanks Jay, Using this, I was able to get the power supply going. All voltages check out OK, so after some careful examination I've plugged in the CPU board. The expected output on the console port is the "O" from "OK"; the K isn't printed because there's no memory. Powered it on, and after some twiddling with the console cable pinout (weird one) yes, there's the "O". Installed the memory board, powered it on again, and alas, still "O" rather than "OK". The Field Engineer's Reference says that that means a memory failure. Of course, the memory board could be faulty, but it could also be a matter of incorrect jumper settings on the memory board. I haven't been able to find a description of these yet. The board says "DGC BBU MEMORY", and contains 8 x 16 AM9016DPC ic's (4116 equivalent). That makes it 128 16-bit kilowords of memory (no parity or ECC, although there are 5 empty spots per row). There are 6 jumper positions labeled 16,17,18,19,0 and 1; each can have a jumper in the 0 or in the 1 position. My board has a jumper in the "0" position for jumpers 16, 17 and 18. No jumpers in the other three positions: o o o o o o 1 o o o o o o 0 | | | o o o o o o 16 17 18 19 0 1 Is anyone familiar with these? Camiel

12 years, 6 months

Tandy DWP 220 printer

by nudnick1944＠sbcglobal.net

We have a Tandy DWP 220 printer complete with extra Daisy Wheels, cables & ribbon cartridges. The printer is in mint condition. We?re moving to Hawaii soon and we are looking to clear out our closets... Please respond if you or someone you know might be interested. Regards, Stu in K C That?s Why They Call Me... The Nudnik!!!

12 years, 6 months

VAX11/750 Diagnostic Tape Set - on ebay

by toby＠telegraphics.com.au

DEC VAX11/750 Diagnostic Tape Set http://r.ebay.com/zDS4ws I own an (hitherto unrestored) VAX-11/750 and if someone with a working TU58 can image these tapes, I might be persuaded to bid on these. --Toby

12 years, 6 months

Free DEC Manuals

by oe5ewl＠gmail.com

Got some Original DEC Manuals in reasonable condition. As I do not need them at the moment any interested can have them. These Manuals have seen little use and slight yellowing on the covers. Inside they're pretty unused and clean. EK-PC380-OM-001 Professional 380 Owner's Manual EK-T25QA-IN-001 M7605 Q-BUS KIT Installation Guide EK-DZQ11-UG-001 DZQ11 Asynchronous Multiplexer User's Guide EK-T25TD-IN-001 TK25 Tape Drive Installation Guide EK-0TK25-UG-001 TK 25 Tape Drive Subsystem User Guide If you want them all (or a single one), let me know your postal adress and I'll let them fly out. I you want to give me something for them, it'd be appreciated. But not needed. Regards, Wolfgang -- Wolfgang Eichberger - OE5EWL Operating System Collector Blog: 5ewl.blogspot.com Homepage: www.eichberger.org Ahnenforschung / Genealogy: A(E)ichberger, B(P)ruckmayr Raum Leonding/Alkoven/Eferding; Schmeisser Raum Attergau

12 years, 6 months

Older CD-ROM refuses to read media - ideas for repair?

by mbbrutman-cctalk＠brutman.com

I have an old project laying around that I just spent another two hours on .. It is an 1993 external parallel port attached CD-ROM. A company called "Storage Devices Inc" made it, and IBM resold it. The model number is SCD-683. There are some traces of it if you search the web, but not much interesting. I have the drivers so that is not a problem. The CD-ROM is a 1x SCSI unit that uses a caddy. There is a parallel to SCSI bridge board in the enclosure based on the NCR 53C80 chipset, which was well known back then. The CD-ROM does show up and talk when used on an XT running PC DOS 3.3; it responds to commands like eject and it lets me see its error counts using a utility program. The problem is that it refuses to read any media that I give it. The drive is very clean - I removed the top and had a look inside the mechanism to be certain. It is a caddy loading model so I can't tell for sure that the head has clear access but everything seems to be operating freely. I'm using old pressed aluminum discs (OS/2 Warp) which should be fine in any CD-ROM device. I have tried cleaning the heads with a special CD that has the magic fibers on it, but nothing is helping. (I even reached in gently with a Q-tip and isopropyl alcohol, but that did not change anything.) I'd like to see this thing run - it has a carry handle on the side! Unless I come up with another idea to try the only way that is going to happen is if I swap the drive out. The original drive is an IBM CDRM00101 and the driver is looking for the ID string. So a drive swap with a different SCSI drive will probably require patching the device driver. So, any ideas on what I can do to clean the head further? (It might just be hopelessly out of alignment - I don't know the history of the drive.) Mike

12 years, 6 months

Enter now for the Summer 2012 Retrochallenge

by mark＠wickensonline.co.uk

Announcing the Retrochallenge 2012 Summer Challenge As usual the competition is open to all, so come and join us for a legitimized month of playing, hacking and blogging with/about your retrogear. For those of you new to retrochallenge the philosophy is: About RetroChallenge In a nutshell, the RetroChallenge is a loosely disorganised gathering of RetroComputing enthusiasts who collectively do stuff with old computers for a month. The event is very much open to interpretation... individuals set there own challenges, which can range from programming to multimedia work; hardware restoration to exploring legacy networking... or just plain dicking around. It really doesn't matter what you do, just so long as you do it. While the RetroChallenge has its competitive side, it's not really a contest... it's more like global thermonuclear war ? everyone can play, but nobody really wins. Come on... give it a go! The summer retrochallenge runs for the month of July. Register using the ENTER link at http://retrochallenge.org the Official Competition page

12 years, 6 months

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test-drb June 2012