test-drb December 2009

test-drb@ccmp.vtda.org

184 participants
226 discussions

Reading NorthStar Horizon hard sector disks on PC

by marvin＠west.net

> From: "Chuck Guzis" <cclist at sydex.com> > Not all Northstar diskettes are HS. One of the models (Advantage?) > isn't--and it's that format that the Microsolutions MatchPoint will > read, not the others. It's been too long since I've seen the darned > things... I think the machine you are thinking of might be the N* Dimension. The Advantage still uses 10-sector floppies. I've never seen the Dimension but vintagemicros on Ebay was selling one a while back and had a picture of it. Apparently it was MS-DOS compatible.

14 years, 5 months

Looking for CMD CQD-200/TM or CQD-200/M EPROM images

by glen.slick＠gmail.com

Does anyone have a CMD CQD-200/TM or CQD-200/M and an EPROM programmer or other means of reading the EPROM images that could send me a copy? I think I have mostly figured out the CSR decode PAL for a CQD-200/T and programmed a new one and now it responds to both the disk and tape CSRs, but only the tape CSR looks like it has normal values. Maybe I also need to replace the EPROMs with CQD-200/TM or CQD-200/M EPROM images to get it to respond normally to the disk CSR. I have had encouraging results so far doing the same to convert a CQD-220/M into a CQD-220/TM and got it working with both a disk and a tape at the same time. -Glen

14 years, 6 months

I'm,looking for PDP-11 CPU tests

by brain＠jbrain.com

I sent the DEC ROM info to the VT220 Font author, and he responded with thanks and also wanted to know if anyone had PDP-11 CPU tests. I noted he might want to join here, but I thought I'd start the ball rolling on his request. Jim -- Jim Brain, Brain Innovations (X) brain at jbrain.com Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times! Home: http://www.jbrain.com

14 years, 8 months

Old DEC Power Control 861C

by icipasla＠gmail.com

*Many thanks, I found a leaking capacitor just as you have described. I've ordered new ones and will soon be able to replace it. I'll let you know if that fixes the problem (It should!).** Normand *>* Old DEC Power Control 861C Hi, *>* *>* looks like I am not getting the posting in my e-mail but my messages do get *>* posted. * This issue came up a few months back. Apparently gmail filters the replies to your own messages somewhere (and not to somewhere sensible!). Perhaps somebody else can rememebr the details. >* *>* I found this replyto my previous message by Tony Duell *>* <cctalk%40classiccmp.org?Subject=Re%3A%20Old%20DEC%20Power%20Control%20861C&In-Reply-To=%3Cm1NM4jS-000J3uC%40p850ug1%3E>in *>* the archives. *>* *>* To follow-up, the 861C emits a crackling noise for the first few seconds (20 *>* or so) and then I can hear a relay chattering (very noisy!). *>* *>* Also the light on the front panel is flashing continuously (maybe that's *>* normal.) * old DEC neons tend to flicker randomly (and it's truely random). The basic design is for the mains : Mains in--->filter --->Breaker-+--->Unswitched outs | +--->Contactor (big relay)-> Switched outs The contactor is controlled (in the 861) by a reed relay on the little PCB inside. This has a differentially-wound coil to give the 'ground for on' and 'ground for off' functionality on the 3 pin connector. The reed relay coil is powered by a little transformer/rectifier/capacitor circuit, mostly on the PCB. My first suspicioun is that capacitor. Open it up and look for any electrolytics on the PCB inside. -tony

14 years, 8 months

Manual scanning: TIFF-to-PDF software with greyscale support?

by classiccmp＠philpem.me.uk

Hi guys, I'm after a program that can convert TIFF files into PDFs. I've seen Eric Smith's "Tumble" app, which works great... but only for B&W TIFFs. While I can use Imagemagick to convert the images to B&W, that defeats the point: there are photos on the scanned pages, and I'd rather like to keep them as photos, not black splodges. Also, has anyone come up with a "best practice guide" for manual scanning? At the moment I'm scanning like this: B&W text only: 600dpi, black and white, threshold=50%. Text + photos: 600dpi, greyscale, then despeckle and scale down to 300dpi. Obviously if there are better ways (in terms of quality and/or speed) I'd like to know before I scan a ton of testgear manuals... Also, does anyone know of an app that can take the PDF file, OCR it and then insert the text as a background layer while leaving the image alone? I'm pretty sure Acrobat can do this, but like most Adobe software, the price tag is somewhat... eye-watering. "If you have to ask how much it costs, you can't afford it." Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

14 years, 9 months

ISO HP-UX 9.10 install CD

by aek＠bitsavers.org

I need to get a system running to recover some data from some HPIB drives. Does anyone have one to spare, or an ISO image of it?

14 years, 10 months

Catweasel support for Intel M2FM working!

by snhirsch＠gmail.com

I'm pleased to announce that the maintainer of Linux cwtool has implemented working support for reading and writing Intel M2FM "DD" diskettes as used with the Intellec development systems :-). Karsten did some analysis of raw bit images I sent him and produced a working driver within a week! As a "smoke" test (my MDS800 is not functional at the moment), I duplicated the ISIS-II system diskette and sent the copy to a person with a working system. It boots, catalogs and otherwise looks fine. I have about 20-25 original distribution diskettes for the MDS800 and will get busy imaging them ASAP. Who would be willing to host these? They are "cooked" images, so it would be possible to extract the files >from them with a bit of work. However, they're obviously of the most use to folks with access to a Catweasel board (and an Intellec system). Steve --

14 years, 10 months

Honeywell Level-6

by hachti＠hachti.de

Hi, are here people with intimate knowledge of Honeywell Level-6 (Series 60) computers? Or documentation? I got two Level-6/06 machines. Those seem to be somewhat different from the rest of the line as they should be downwards compatible to the X16 machines. But I have no single manual for them. All I have are some Level-6 manuals talking about other machines. In one of them, the 6/06 is mentioned as special and "Series 700" (WHAT is that?!?) compatible. And that it is explicitly not subject of the manual and that it as its own manual that I do not have. I also don't have any schematics. Best wishes, Philipp :-) -- http://www.hachti.de

14 years, 10 months

HP Integral / display schematic ?

by jdr_use＠bluewin.ch

First the TU56 broke, then the Lilith disks goes, and now it is the HP Integral's turn . The Integral, stored a year ago in working condition, has a display problem. After switching on the Integral makes all the right noises, but the display remains off. Anyone has a pinout, or schematic , of the Sharp LJ512U03 EL-display as used in the Integral ? ( there is something, but not much, in the 1985 HP Journal ) a replacement will be hard to find, and far too expensive of course. I do wonder how those with 100+ computers keep them all runnning, I have maybe 25 classics and find it hard to keep them alive. Jos Dreesen

14 years, 11 months

Osborne books

by charlesmorris800＠centurytel.net

There was some recent interest in Adam Osborne books. I have found one each of the following: "An Introduction to Microcomputers Volume II: Some Real Products, June 1977 Revision" "6800 Programming for Logic Design" Make me an offer. Shipping will be USPS Media Mail from zip 65775. thanks Charles

14 years, 11 months

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test-drb December 2009