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101090 discussions

DEC Gamma-11 units in private collector hands?

by philippe＠cowpig.ca

Hi everyone, Being personally quite interested in DEC's laboratory systems, I stumbled a few days ago upon some scant details on DEC's nuclear medical imaging system, the Gamma-11. Apparently this PDP-11 was designed to be connected to a Gamma Camera, and had a VT11 or VSV11 display system connected to it. As well, along with it came a modified version of RT-11. I was wondering if anyone on the list had one of these machines and knew what parts made the hardware a Gamma-11, as well if anyone had manuals online that they might share, as well as potentially the software for the unit. There's not really much that I can see on Bitsavers, but I might not have looked hard enough; I found the VSV11 and VT11 option manuals, but that seemed to be about it. Cheers, Phil

18 years, 6 months

Indigo 2 and registered/buffered SIMMs.

by trasz＠FreeBSD.org

Memory for Indigo 2 (IP22) needs to be FPM with ECC. But I couldn't find anywhere if these SIMMs may be "registered", aka "buffered". I see quite a few cheap FPM ECC SIMMs for sale, but most of them have some strange additional chips on them, I guess that means there are of the buffered kind. Will these modules work in I2? -- If you cut off my head, what would I say? Me and my head, or me and my body?

18 years, 6 months

dsdd floppies

by dm561＠torfree.net

Date: Sat, 27 Oct 2007 20:37:35 -0700 (PDT) From: David Griffith <dgriffi at cs.csubak.edu> Subject: dsdd floppies To: cctalk at classiccmp.org Message-ID: <Pine.GSO.4.55.0710272034030.10982 at helios.cs.csubak.edu> Content-Type: TEXT/PLAIN; charset=US-ASCII >Someone here posted about a friend in Canada who has boxes upon boxes of >unopened blank DSDD 5.25" floppies. Who was that? I think I deleted the >relevant emails (or at least grep is failing me). >-- >David Griffith >dgriffi at cs.csubak.edu ------------------ That might have been me, but he's also on this list; Golan, are you listening? m

18 years, 6 months

Cromemco System Three PerSci 8" Drive Problem ?

by Watzman＠neo.rr.com

Disk detection on the Persci 270 series drives (and I think on the 299 series drives as well) is simply a microswitch triggered by the leading edge of the diskette. There are NO electronics in the insert detection / clamp / eject mechanism. It is a trivial circuit consisting ONLY of a DC electric motor (24 volts, I think) and 4 microswitches (two of these are operated by cams on the motor shaft, one is the front panel eject switch and one is triggered by the diskette itself when it's pushed in). All you need to troubleshoot it is a multimeter. It has no connection to the actual "electronics" of the drive. It's just straight DC electricity. Schematics are available on the Harte site and in other places if you don't have the manuals. The only thing different about the CS3 implementation is that they removed the front bezel of the drives, and then replaced the eject switches that had been part of the drive's own front bezel (now removed) with a switch on the CS3 chassis. I don't remember if they connected this through the switch wires left over from the (removed) Persci front bezel or if they did eject through the 50-pin data interface connector (Persci did allow an eject function through the 50-pin data cable).

18 years, 6 months

Wanted: VAX Ultrix 3.0C

by sethm＠loomcom.com

Folks, I'm looking for VAX Ultrix 3.0C. TUHS doesn't seem to have it, nor does Bitsavers, but I'm hopeful someone on this list might have tape images they'd be willing to share. It used to be an extremely common VAX UNIX in the wild, so I'm hoping it still exists somewhere. -Seth

18 years, 6 months

Technical info on Amiga video port expansion devices wanted

by markk＠clara.co.uk

Hi, Over the Amiga's life, several devices were produced that connected to the 23-pin video port, and allowed more colours to be shown. I'm aware of at least five. Were any other video port devices produced? - HAM-E from Black Belt Systems - DCTV from Digital Creations (this also plugged into the parallel port and the hardware included a video digitiser) - ColorBurst from M.A.S.T. - Fun Color from Adept Development (saw this on amiga-hardware.com) - Graffiti from Individual Computers Technical info on the Graffiti is available from the Individual Computers web site, but I couldn't find detailed docs on any of the others. I would like to get hold of: - Technical details about how the hardware works for DCTV, Fun Color, ColorBurst and HAM-E. (I got a little info on the HAM-E from an old Usenet posting.) -Details of any chips inside any of the devices. or just high-res pictures of the circuit boards. - Any software that came with ColorBurst & Fun Color (DCTV & HAM-E software is available on the web, but other versions of those would be good to have too.) So if you have that or know where I might get it, please let me know. (The eventual aim is to allow Amiga emulators to support at least some of these devices.) -- M

18 years, 6 months

GAMMA-11

by aek＠bitsavers.org

> I was wondering if anyone on the list had one of these machines and knew > what parts made the hardware a Gamma-11, as well if anyone had manuals > online that they might share I have the manuals scanned, but they aren't on line yet, since it hasn't been a high-demand item.

18 years, 6 months

dsdd floppies

by dgriffi＠cs.csubak.edu

Someone here posted about a friend in Canada who has boxes upon boxes of unopened blank DSDD 5.25" floppies. Who was that? I think I deleted the relevant emails (or at least grep is failing me). -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

18 years, 6 months

Unix PC mouse

by dgriffi＠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

18 years, 6 months

IBM 9331 011 8" floppy pinouts?

by derschjo＠msu.edu

I have a nice, apparently functional external IBM 8" floppy drive, model 9331 011 that I'd like to hook up to a PC FDC. It has a 37-pin D-sub connector on the back. Searches for pinout info have returned nothing useful. Information about the 37-pin connector, or the pinouts of the drive inside the enclosure (a YE-Data YD-180 type 1601, which I've also not found any reliable info on) would be most appreciated. Thanks, Josh

18 years, 6 months

Unix PC mouse, wanted

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, 6 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, 6 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, 6 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, 6 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, 6 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, 6 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, 6 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, 6 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, 6 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, 6 months

atc-510 simulator

by jetfreight＠hotmail.com

hello i just bought a very low time atc 510 in canada the sim does not have any manuals with it i wonder if i can buy some copies of the manuals from you or any kind of training programs i got your email from the internet thanks j singh

18 years, 6 months

cctech Digest, Vol 50, Issue 62

by mross666＠hotmail.com

Message: 1 Date: Thu, 25 Oct 2007 12:25:07 -0700 (PDT) From: Fred Cisin <cisin at xenosoft.com> Subject: Re: Things to do in SF before VCF > > Will, the only guy here NOT attending VCF. > > Nope. I ain't going either, dang it! >My work schedule sucks, also. Not just you guys, I won't be near the place. Wrong coast, plus my wife is VERY preg and could just possibly go 'pop' at an inconvenient time! Not too sad tho - just had a major coup, see: http://www.corestore.org/3.htm :-) Cheers Mike http://www.corestore.org _________________________________________________________________ Windows Live Hotmail and Microsoft Office Outlook ? together at last. ?Get it now. http://office.microsoft.com/en-us/outlook/HA102225181033.aspx?pid=CL1006269…

18 years, 6 months

rs232 interface for Radio Shack PT210 printing terminal

by dgriffi＠cs.csubak.edu

I've decided to make a couple serial boards for my Radio Shack PT210 terminals so I can have them talk serial. How many people here have PT210s who'd like a serial board? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

18 years, 6 months

Did I get an RL01 pack instead of RL02?

by charlesmorris＠hughes.net

On Thu, 25 Oct 2007 12:00:39 -0500 (CDT), you wrote: >Defective, or bulk-erased, which amounts to the same thing. >RL01 were long behind it by 1983, which would make me initially expect >that it probably was some other cause than RL01 vs RL02 issues, >leaving "blank media" or "non-DEC media" as likely issues. > >-ethan I saw Al Kossow's response too - thanks, Al... I had no idea that there were different (low-level) formatting on the same physical media! So I emailed the seller and got the following (excerpted) response: >It was in a rack with other discs that had been used on a pdp11/23 PLUS system, >having two RL02 drives, and was presumably used to archive obsolete >paper-plant simulation programs, written in FORTRAN 77. The disc >cartridges in this set were of multiple manufacturers, and seemed to >have been bought from the lowest bidder. I have CDC's, Memorex's, and >even some DEC's. No idea as to whether it was bulk-erased, but that is starting to sound more likely, given the above history. He has volunteered to mail me a "real" (DEC) pack, at no additional cost - that's superb fleabay service and definitely exceeded my expectations. Meanwhile, anyone got one or two more packs I can purchase? -Charles

18 years, 6 months

Did I get an RL01 pack instead of RL02?

by charlesmorris＠hughes.net

I bought an RL disk pack on Ebay, supposedly for an RL02 drive. It is a Memorex "Mark III T" with a small label "Made in USA CI 04050" and various previous-owner stickers/scribbles showing first use in 1983 up through 1985. The shock indicator is not red. But it won't load in any of my four RL02 drives (the Ready light never comes on, so track 0 is not being found)! Since the drive has embedded servo info, so head alignment between drives is not an issue, there are only two remaining possibilities that I can think of: 1) the pack is defective (factory servo tracks are trashed), or 2) it is an RL01 (5 Mb) pack, which looks physically identical but will not work in an RL02 drive. Any thoughts... Would this be the likely result (no Ready light) of putting an RL01 pack in an RL02 drive? If so, anyone want to buy it (or preferably trade for the proper pack)? thanks Charles

18 years, 6 months

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