test-drb October 2007

test-drb@ccmp.vtda.org

228 participants
467 discussions

by g-wright＠att.net

-------------- Original message from David Griffith <dgriffi at cs.csubak.edu>: -------------- > > Someone some time ago said that he has some AT&T Unix PC mice. Who was > that? I'd like one. > > -- > David Griffith > dgriffi at cs.csubak.edu I second that. Ihave need one for a while - Jerry Jerry wright g-wright at att.net

18 years, 2 months

Did I get an RL01 pack instead of RL02?

by charlesmorris＠hughes.net

>But given what you said, it could be that all the packs, including the >DEC ones have been bluk-erased :-( I wish you hadn't said that :P Only way to find out is to try it when the replacement arrives. Meanwhile I also looked at the platter hub. The DEC cartridge has 40 slots evenly spaced around its circumference, whereas this Memorex pack has only 8, one of which is a "double", presumably for indexing. As the RL drive uses a reluctor pickup on this area to sense disk rotational speed (among other things), there is no way the Memorex would have ever worked in an RL... >There is no way to rewrite the servo information using a normal RL drive. Is there anyone out there who has hardware capable of reformatting these packs i.e. rewriting servo tracks? -Charles

18 years, 2 months

Cromemco System Three PerSci 8" Drive Problem ?

by billdeg＠degnanco.com

Question I have a CS3 with a PerSci dual 8" internal drive that does not recognize/respond when a disk is inserted in drive A, but drive B does respond when a disk is inserted. Drives C and D are empty. The PerSci dual 8" drive is the model with the one belt/on-board controller shared by the two drives. When working correctly, the drive has a mechanical lock that detects the insertion of the disk, engages the read head, and holds the diskette in place. No latch arm needed. There are 4 buttons on the front, one for each drive (A,B,C,D) - If you push the corresponding button and there's a disk in the drive a motor ejects the diskette automatically. Pretty cool for a 1979 micro. Do the diskette detect sensors go bad on these? Next I tried and failed to get a RDOS monitor prompt, although I followed the dip switch settings as instructed in the manual. The drive controller has the RDOS ROM. I did all of the standard things, re-press the IC's, re-seat the cards, etc. The system is in very nice shape, no corrosion or scratches. I feel that I have nailed down the problem to being either the drive, the drive controller, or the terminal. Through a process of elimination I will attempt to replace each component in question (except the dual drive, I will probably put in Tandons instead if I can. I have a head start, the entire system came together in one donation so I was able to record how it was all cabled together, and I can assume it worked once as-was. Also included in the lot was Fortran IV and CDOS software. The printer is a Texas Instruments Omni 800 / 810 RO Terminal. I was told the system cost $15,000 new in 1979. A pretty sweet personal computer. PICS: http://www.vintagecomputer.net/cromemco/system_three/

18 years, 2 months

PDP-4 documents (was Very cool DEC documents)

by aek＠bitsavers.org

> manuals from a PDP-4. Yes I said "4". How rare are these ... Al K.? Paper copies aren't common. Most of the material has been scanned. The 4 is the first of the 18 bit series that ended with the 15. It was the first DEC computer to ship after the 1.

18 years, 2 months

CMD CQD-200 manual

by derschjo＠msu.edu

Anyone know where to find a copy of the manual for a CMD CQD-200 QBus SCSI controller? Bitsavers has a manual for the CQD-220, which looks fairly similar, but I'd like to find the exact manual if possible... Thanks! Josh

18 years, 2 months

Illustrated parts breakdown document for the DEC HSC50 needed

by cheri-post＠web.de

Hi all, can anybody point me to a "working" pdf-version of the IPB-document for a HSC50 called EK-HSC50-IP-00x ? There are pdf-copies from the DEC MDS online on the Manx-website, but unfortunately, most of the diagrams are missing there. Same for the mirrored copies... The reason for asking this that I saved such a unit before the scrappers could get it, and I need to figure out how to take apart the locked front door of the chassis. The key is missing... Any help is apprechiated! Kind regards, Pierre ______________________________________________________________________________ Jetzt neu! Im riesigen WEB.DE Club SmartDrive Dateien freigeben und mit Freunden teilen! http://www.freemail.web.de/club/smartdrive_ttc.htm/?mc=021134

18 years, 2 months

5-1/4 diskette drive on current computers

by ygehrich＠yahoo.com

I remember a discussion a long time ago but not much of it. Would there be anyway to hook up a 5-1/4" diskette drive to a modern day computer running any version of Windows? Have a number of things that I would love to convert to 3-1/2" or put on CD. The two machines that I have up and running are Windows 98 and Vista Ultimate. I also have an older Thinkpad 500 running Windows 3.1

18 years, 2 months

Things to do in SF before VCF

by pat＠computer-refuge.org

So, I'm going to be spending a few days out in the San Francisco area before VCF (I'll be there Weds afternoon through early Monday). Can anyone suggest other (non-computer) related things to do while I'm out there? Or if anyone wants to show off their collection of big iron, that might be interesting too. :) Pat -- Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

18 years, 2 months

Very cool DEC documents

by evan＠snarc.net

No details yet, but our local user group (MARCH) is getting some manuals from a PDP-4. Yes I said "4". How rare are these ... Al K.?

18 years, 2 months

WTB - IMSAI or similar chassis

by jack.rubin＠ameritech.net

I'm looking for an S100 chassis in which to mount my WAMECO system. I have power supply, mother board and component cards but I'm looking for a chassis with a front bulkhead for attaching the WAMECO front panel. The WAMECO components are drop-in replacements for the IMSAI bits. The distinguishing characteristic of the chassis is that the motherboard actually extends thorough the front bulkhead to receive the front panel. Slot one is offset by an extra 1/4" to accommodate the front panel. In addition to IMSAI, boxes of this type were manufactured by TEI and Integrand and maybe a few others. I don't need the top or any electronics - just a bare chassis with card guides. Any help is greatly appreciated. Thanks, Jack No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.15.11/1093 - Release Date: 10/25/2007 5:38 PM

18 years, 2 months

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test-drb October 2007