- test-drb@ccmp.vtda.org - classiccmp.org

RK05 alignment - without alignment pack?

by thomas.gardner＠sbcglobal.net

> Date: Sun, 13 Dec 2009 19:04:11 +0100 > From: Philipp Hachtmann <hachti at hachti.de> > Subject: Re: RK05 alignment - without alignment pack? > To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> > Message-ID: <4B252C9B.1010100 at hachti.de> > Content-Type: text/plain; charset=ISO-8859-15; format=flowed > > Hi Tony, > > thanks for the reply. > > > > >> The RK05 manual tells me how easy it is to realign the heads: Just load > the alignment pack and... > >> -- But I don't have an alignment pack :-( > >> > >> Does anybody (best would be in Europe) have an RK05 alignment pack I > could use? > > > > I have one, but there's no way I am trusting it to the postal 'service' > Hm. I can understand that... > > >> Is there a known trick to do it without alignment pack? I have working > drives and formatted disks handy. > > > 3) With a 'scope connected to the read amplifer testpoints (as if doing > > the alignment with the pack) and the positioner set to cylinder 0, screw > > in the appropriate algnment screw. You'll see the singal amplitude rise > > as the ehad gets over the data track, and then fall off as you go past > it. > > How does the positioner find track 0?!? > Does it use the end of range microswitch and then count? This is a bit > unclear to me. With a working servo, the servo will move the carriage to what the optical transducer calls Track 00, but where the heads are with respect to the tracks in the disk pack is a matter of alignment, which was lost when the scale fell off and was re-attached. The heads could be anyplace, plus or minus many tracks of Track 00. There is not likely to be any information recorded towards the outer diameter from TK00 (maybe some residual unerased junk). If you can prerecord your test pack on a good drive with alternating patterns of 1F and 2F starting at TK00, say 1F for all sectors on TK00, 2F for all sectors on TK01, etc. for a few tracks, then it should be obvious where the pattern stops repeating as you manually move the heads in and out. The last good track as you move out is TK00. BTW, I say this assuming DEC didn't put some reserved tracks towards the outer diameter from TK00. Today the logical TK00 (or block 0000) is not at the outer diameter, but I suspect this is not so for the RK05. Tom

16 years, 7 months

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MDS archive

by aek＠bitsavers.org

Looking at http://arkiv.netbsd.se/?ml=cctalk&a=2004-12&t=558361 There was some work done years ago at collecting docs and firmware. Looks like www.s100-manuals.com mentioned by Randy is gone. I'm working on adding more MDS material to bitsavers, and didn't want to dump firmware if it's already been done.

16 years, 7 months

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DEC Server 200/MC

by rodsmallwood＠btconnect.com

Hi Thanks to a list member with a good memory I have managed to trace and get running a copy of Fido BBS on my DEC Rainbow. It's just about as I had it back in 1983 as Fido_UK1. I can run it on a modem that would have been current in'83. I now want to make it available via telnet. I do have a windows based application that will convert a telnet connection to an emulated modem connection. However what would be really nice is to hook up a DECServer 200/mc to convert an incoming Telnet call to a port emulating a modem. That means the Rainbow would think it was connected to a modem. Connection should be indicated by asserting DCD. Is it possible? If so how? Regards Rod Smallwood

16 years, 7 months

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way off topic (sort of) Antarctic Dome disassembled

by jws＠jwsss.com

I know we have had a list member emailing from here, this is an article about the final disassembly of the dome. http://www.onorbit.com/node/1797 Jim

16 years, 7 months

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Univac tape drive

by wdonzelli＠gmail.com

A few years ago, some guy on Ebay had a Univac Uniservo IV tape drive (a typical fridge sized monster) on Ebay. I do not know if it ever sold - he wanted a lot of money. Does anyone know whatever happened to it? -- Will

16 years, 7 months

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Lonesome Minicomputer Owner

by mike_coholich＠yahoo.com

I just found your email on the WEB. Do you still have the Honeywell 716? Thanks, Mike Mike Coholich 225 Cottonwood LN Wexford, PA 15090 Cell: (412) 596-2988 <mailto:mike_coholich at yahoo.com> mike_coholich at yahoo.com

16 years, 7 months

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also, Re: rare stuff available

by mcguire＠neurotica.com

I forgot to mention...if anyone knows of any individuals or other mailing lists that might be interested in these things, please feel free to forward my message along. -Dave -- Dave McGuire Port Charlotte, FL

16 years, 7 months

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Iomega Click Of Death (was Different take on 10 Yr. 'RULE')

by thomas.gardner＠sbcglobal.net

> On 29 Nov 2009 at 14:27, Fred Cisin wrote: > > > How about their "Jaz" drives? > > their "click" drives? In which the "click of death" was administered > > DURING manufacturing. I thought the "click of death" phenomena was a ZIP problem and not a JAZ problem. I also never found a good statement of what was the underlying problem(s) that led to the "click of death" phenomena! Does anyone really know what was going on (inner crash stop crash, head retract/relaunch; solenoid lock/unlock, both, other) and why (loss of servo control probably, but why loose it and not regain it). Comments? Pure intellectual curiosity only :-) Tom

16 years, 7 months

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source for apple monitor cables

by brianlanning＠gmail.com

I have a switchbox for apple monitors and ADB wires that I'd like to hook up to several macs and a 2gs. I believe for the ADB part, I can just use s-video cables. But where can I inexpensively get db-15 mac video cables? I can use 4 right now, but I'd like to get 6 or so for future expansion. :-) brian

16 years, 7 months

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Need datasheet for AMD 79C830 SUPERNET 2 chip ($$$)

by sellam＠vintagetech.com

Hi everyone. I'm looking for a datasheet for the AMD 79C830 "SUPERNET 2" chip. The only caveat is that it must be dated prior to July 1991. This will likely be a preliminary datasheet that was disseminated in limited volume. If you've got it, please contact me directly. I'll pay $100 for an actual lead but it must be in paper form. Digital copies might work, though it's doubtful whether one would exist. Thanks! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

16 years, 7 months

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Running Computers Cold

by roger.holmes＠microspot.co.uk

Sorry to state the obvious, but it depends on the computer. When I used to work on military computers they were rated down to -55C I think. The parts which were only connected in a lab were rated down to 0C/32F. My old Germanium transistor machine turns itself off below 10C/50F because thats what Mullard / GEC (the British one), the transistor manufacturers specified. Now they are getting on for 50 years old I don't power it up below 13C/55F. Normally we shut down the restoration project in November but today, with the aid of a couple of fan heaters, we were working on it. Increased levels of solar radiation has a few advantages, though its due to peak in 2012 I'm told. I imagine with valves, the potential problem would be the glass cracking. Cold is certainly more of a problem than overheating, generally if an operator can stand the heat so can the computer. I've heard tales of old ICT 1301s being operated by people stripped down to their pants (underpants for those to the left of the pond) when the air conditioning failed because otherwise the payroll run would not be done, and of course they themselves would not be paid as well as taking flak from all the other workers. At work back in the 80s I had an Apple ][ euro-plus or maybe it was an Apple ///, anyway it was fitted with an external 'ICE' winchester drive. ICE being the brand. As we moved into winter it took longer and longer to start up in the morning depending on the temperature. We used to laugh at how appropriate the name was. Of course it eventually failed completely but at least we got a lot of warning and had a fairly full backup. Roger Holmes On 9 Dec 2009, at 06:56, cctalk-request at classiccmp.org wrote: > Date: Tue, 8 Dec 2009 21:19:55 -0800 > From: "Zane H. Healy" <healyzh at aracnet.com> > Subject: Running Computers Cold > To: classiccmp at classiccmp.org > Message-ID: <p06240836c744e3988e63(a)[192.168.1.199]> > Content-Type: text/plain; charset="us-ascii" ; format="flowed" > > Okay, this is the first time I've ever had to worry about this. When > is it to cold to run a computer? It's 35F out in the garage, and it > is supposed to get a lot colder tonight. I just shut the > dehumidifier down (to cold to run it) and setup a heater near the > computers (and other stuff I don't want to freeze).

16 years, 7 months

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small-cap SCSI-1 drives

by spectre＠floodgap.com

I find myself a little low on small capacity (250MB-1GB) SCSI-1 (not SCSI-2) drives, which is sad, because I'm trying to restore one of my Alpha Micros with one and the ones I have in stock are either spares for the Macs or otherwise allocated. Does anyone have some lying around they don't need and could make some arrangement to part with? If so, please contact me off list. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- Famous, adj.: Conspicuously miserable. -- Ambrose Bierce ------------------

16 years, 7 months

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HW supported by ULTRIX?

by ethan.dicks＠gmail.com

On 12/9/09, Zane H. Healy <healyzh at aracnet.com> wrote: > No denying that. Off the top of my head Ultrix-32 v2 is probably the > minimum you'll get running on a MicroVAX II. I loaded Ultrix T2.0 (pre-release "Test" version?) from TK50 in about 1986 or 1987 on an early MicroVAX II. Prior to that, I loaded some flavor of Ultrix v1 from magtape onto an 11/730 w/RB80 disk. That doesn't say what will or won't work in terms of the boundary cases, but it's two points on the curve. In both cases, I remember that installation took most of a day, and it was a major wait for the kernel to compile. -ethan

16 years, 7 months

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amiga 500 trapdoor memory upgade and cover

by brianlanning＠gmail.com

Does anyone have a spare amiga 500 512k trapdoor memory upgrade (or similar) that you'd be willing to part with? I'm looking for the cover as well. Thanks. brian

16 years, 7 months

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ZAX ICD-378 Z80 Hardware debugger

by snhirsch＠gmail.com

Does anyone know where I can find documentation for this unit? Google turns up mention of one being sold on eBay with a PDF of the manual, but the listing is long gone from eBay. Wayback machine turns up nothing. Steve --

16 years, 7 months

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RK05 alignment - without alignment pack?

by thomas.gardner＠sbcglobal.net

> Date: Thu, 10 Dec 2009 18:09:08 +0100 > From: Philipp Hachtmann <hachti at hachti.de> > Subject: RK05 alignment - without alignment pack? > To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> > Message-ID: <4B212B34.6070003 at hachti.de> > Content-Type: text/plain; charset=ISO-8859-15; format=flowed > > Hi folks, > > I took a "new" RK05 disk drive from my heap. After defoaming I powered it > up. I soon realized that > the position sensor's glass had fallen off. Can be glued back in place > easily. But after that I'll > most probably have a misaligned RK05. > > The RK05 manual tells me how easy it is to realign the heads: Just load > the alignment pack and... > -- But I don't have an alignment pack :-( > > Does anybody (best would be in Europe) have an RK05 alignment pack I could > use? > > Is there a known trick to do it without alignment pack? I have working > drives and formatted disks handy. > > > Best wishes, > > Philipp > ------------------------------ With a good eyeball and a careful hand u can align to data. Since you have what you hope are calibrated drives, I would try taking a formatted pack on a good drive and writing 1F and 2F signals on alternate tracks, 2F on TK00, 1F on TK01, etc. (I don't know what the RK05 code is but 1F and 2F translates to some repetitive pattern). It is not necessary to do so on the whole pack, just circa TK00 and someplace in the middle of the pack. The analog signal will have a broad flat peak region as u move the heads across the track, so u can either eyeball the center of a track or better yet use a micrometer gauge to measure the region and then move it to the center. I'm not sure whether it is better to look at the entire track or two sectors 180 degrees apart. Depending upon the resolution of the recording system, the peak of a 2F should be about 0.7 of the 1F, so it should be obvious as u move across a track. Since you are liable to be several tracks off, the first thing you have to do is find Track Zero, which should be where the 1F/2F repetition starts. Once u get all the heads aligned at Track Zero, do it again at TK01 where you should have a clear track center (1F surrounded by 2F). Then move to the center and look at the signal again. You don't have to move the heads, just apply pressure to the carriage and see if you are more or less centered. The acid test is then when u read the pack :-) Tom

16 years, 7 months

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isa usb card

by brianlanning＠gmail.com

Does such a thing exist? I know, I'm a masochist. brian

16 years, 7 months

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Data preservation on paper

by spectre＠floodgap.com

Given the recent iteration of the recurrent "how will we save our data in N years" thread, where N is Sufficiently_Large, I discovered this interesting tool. http://ollydbg.de/Paperbak/ There is something terribly attractive about this. I'm tempted to play with it to see how practical it is, after I've ported it to Mac OS X, of course. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- Wagner's music is better than it sounds. -- Mark Twain ---------------------

16 years, 7 months

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TD8E with more than 2 tape transports

by hachti＠hachti.de

Hi folks, as I already mentioned in alt.sys.pdp8 I'm currently experimenting with a TD8E controller in a pdp8/e and more than one TU56. I installed two TU56. The first one has the G888 modules. The second one will be daisy-chained to the first one. Currently I tried only the control cable. Forgot to bring the data cable with me. It looks as I now can access units 0 and 1 on both TU56. I'm quite confident that the data part will work as well. Currently only one or two of the four transport are working properly (The drives are currently being repaired) but there's enough functionality for a proof of concept. The next step will be three modifications: 1. Make the TD8E respond to all four TD8E addresses - This is done easily and non-destructive by pulling the address select jumpers to ground. 2. Add a latch to the TD8E that will hold the two TD8E address bits and feed them through two former ground lines of the cable. 3. Add a demuliplexer to the paddle board. Use the original select signal and the two additional ones to generate 8 select lines. If I'm right I'll have a TD8E that supports up to 8 tape transports (4 TU56). That would be very nice for the beginning. If anybody has already tried this or there's something I've missed, please let me know! Regards, Philipp :-) -- http://www.hachti.de

16 years, 7 months

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Tracking down "crackling" noises in monitor

by derschjo＠mail.msu.edu

Picked up an old terminal in very nice cosmetic condition; it works fine barring a bit of visual "jitter" on the display -- not sure how best to describe it. The picture is clear and sharp but occasionally a few scanlines will spike off to the right a bit. Coinciding with this spiking are tiny crackling noises from inside the monitor. (Or at least it seems like they coincide, obviously I can't verify this.) I thought it might be HV leakage based on discussions I've seen on this list. I've run it with the cover off and the lights off and I can see no evidence of sparking or other visible discharge. Any thoughts? I hate working on CRTs. I'm not great with electronics (getting slowly better) but I can handle debugging low voltage stuff. Fixing monitors scares the heck out of me... - Josh

16 years, 7 months

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Disc reader project -- quick status update

by classiccmp＠philpem.me.uk

Hi guys, Just a quick update regarding the disc reader project. I've added sync-on-MFM-word to the microcode, and the software MFM decoder is working. I got the first valid MFM decode using the "soft-PLL" decoder engine about five minutes ago -- the first 16 bytes of an MS-DOS 5.0 boot sector. I can see all the sector headers, address marks and pad bytes displayed on the screen. "Just a bit" more than the PC disc controller lets you see... :) Now to find a disc with a slightly less ordinary format... perhaps a BBC Micro (Acorn DFS) disc? My target is still an Amiga disk, if I can get my hands on one with known contents. More to come when I've had some sleep... I'll see if I can get some photos of the hardware (and maybe schematics) uploaded in the next couple of days. Cheers, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

16 years, 7 months

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Tracking down "crackling" noises in monitor

by julianskidmore＠yahoo.com

On 7 Dec 2009 at 21:37, Chuck Guzis wrote: > My first instinct says "flyback transformer". Which reminds me, if only I can get the flyback transformer fixed on my old Mac SE I could get it working again! But it's rather specialised I fear :-) -cheers from Julz @P

16 years, 7 months

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Visible Storage exhibit @ CHM

by evan＠snarc.net

Hi all. I got an email from the Computer History Museum (that's the BIG one in California) ... says they're closing the main exhibit this month, and it will re-open bigger and better toward the end of next year. So now's a good time to go visit them before they redesign it.

16 years, 7 months

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Pinging Ian Primus

by dbetz＠xlisper.com

Has anyone heard from Ian lately? I've been trying to contact him at the address ian_primus at yahoo.com with no luck. Thanks, David

16 years, 7 months

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CNC info wanted

by cclist＠sydex.com

I'm looking for information on the Excellon CNC-6 controller. I believe this is a Z8000-based system from the 80's still in fairly wide use. Mostly, I'm interested in general information regarding details on the hardware. If you can offer some illumination, please contact me off-list, if you feel that this isn't appropriate for discussion (I've not seen much mention of CNC controllers to date). Thanks, Chuck

16 years, 7 months

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ISO: 147533-001 ISBC 286/12 SBC Hardware Ref Man

by aek＠bitsavers.org

Anyone have the manuals for Intel's 286/12 board, and the later iSBC 215 board (215b) that directly supported 5" drives (used WD controller chips)?

16 years, 7 months

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Running Computers Cold

by healyzh＠aracnet.com

Okay, this is the first time I've ever had to worry about this. When is it to cold to run a computer? It's 35F out in the garage, and it is supposed to get a lot colder tonight. I just shut the dehumidifier down (to cold to run it) and setup a heater near the computers (and other stuff I don't want to freeze). Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | | MONK::HEALYZH (DECnet) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

16 years, 7 months

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PCMCIA (not Cardbus) interface (was Re: isa usb card)

by ethan.dicks＠gmail.com

On 12/9/09, Sridhar Ayengar <ploopster at gmail.com> wrote: > I know for a fact that there once was made a USB interface for > non-Cardbus PCMCIA, because I have one. I would assume this card would > Just Work(tm) in an ISA->PCMCIA adapter. What's the vendor and part number? I once had a Dell Latitude LM I bought new in 1996 that was running Solaris 7 or RedHat Linux depending on what disk I had installed (I recently saw the Solaris 7 disk for it in my box of 2.5" IDE disks). The Dell FAQ at the time said that there was no way to put a USB port on the machine (I think it was one of the last name-brand laptops to not have that capability). For machines of that era, a PCMCIA (not-Cardbus) USB adapter would be perfect, depending on driver support (i.e. - something more than Win95 or Win98). I have some interesting machines, like a Planar-brand 486-based "medical PC" that's sort of like a wall-mount tablet or laptop - no batteries, but has a built-in LCD, PCMCIA, one ISA, *external* IDE CD-ROM interface (DB-44HD), external floppy (DB-25), that could use a USB 1.1 interface for either external storage or unusual HID goodies. -ethan

16 years, 7 months

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Running Computers Cold

by jlobocki＠gmail.com

Not too sure, but I remember reading an article about the IBM PS/2 model 25, and how they had to sit and come to room temperature after being moved or something would fry.... On Tue, Dec 8, 2009 at 11:19 PM, Zane H. Healy <healyzh at aracnet.com> wrote: > Okay, this is the first time I've ever had to worry about this. When is it > to cold to run a computer? It's 35F out in the garage, and it is supposed > to get a lot colder tonight. I just shut the dehumidifier down (to cold to > run it) and setup a heater near the computers (and other stuff I don't want > to freeze). > > Zane > > > -- > | Zane H. Healy | UNIX Systems Administrator | > | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | > | MONK::HEALYZH (DECnet) | Classic Computer Collector | > +----------------------------------+----------------------------+ > | Empire of the Petal Throne and Traveller Role Playing, | > | PDP-10 Emulation and Zane's Computer Museum. | > | http://www.aracnet.com/~healyzh/<http://www.aracnet.com/%7Ehealyzh/> | >

16 years, 7 months

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HW supported by ULTRIX?

by oldcpu＠rogerwilco.org

I've been trying to find a chart of support hardware under the various releases of DEC's ULTRIX flavor of UNIX, but am drawing a blank. I have a couple of systems that came to me with versions of ULTRIX, a MicroVAX II/GPX running v2.2, and a DECSystem 5400 (RISC-based) running v4.2 (I've since upgraded this to v4.5...thanks Barry!) So, I'm curious about which VAX and RISC systems were supported by which versions of ULTRIX. A lengthy Google search finally turned up a chart for VMS/OpenVMS at: http://h71000.www7.hp.com/openvms/hw_supportchart.html which is useful for the VMS side of things. Glad to have found it. Can anyone point me to a similar reference related to ULTRIX? -- Jared

16 years, 7 months

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Iomega Click drives (was Re: Iomega Click Of Death (was Different take on 10 Yr. 'RULE'))

by ethan.dicks＠gmail.com

Previously in this thread: >> But Iomega already marketed a drive named "Click" (20M? too little, >> too late) > > 40mb. I inherited a drive and some disks... I find it remarkable that > they managed to fit a spinning-removable-media drive inside a standard > PCMCIA card. Somehow, I don't really feel like trusting it to anything > important, though :). I have a couple of these I picked up cheap from a surplus company a few years back. I would never rely on these as a primary backup, but as a fun little device, they are amusing to watch work. My thought when I first saw them was that they reminded me of the storage device show in the alien tech "museum" in "Men in Black", where Tommy Lee Jones picks one up and says, "now I'll have to buy the White Album all over again". It has tempted me to rip my real White Album to Click and see if I could fit the Iomega PCMCIA card into a 3.5" PCMCIA-IDE adapter frame and mount _that_ in a 3.5"-5.25" adapter frame, then mount *that* in my Apex DVD/CD player in place of the IDE DVD-ROM drive. A long way for a gag, but I think it would work. -ethan P.S. - in the box with my Click stuff is a CF-to-Click adapter - the idea was you'd take a 16MB or 32MB CF card from your camera, drop in a Click disk, then siphon off your pictures without a PC in-between. It was a fine idea except it was a) expensive, and b) camera cards quickly blew past the size of a Click disk.

16 years, 7 months

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VLSiCE96

by cfs＠ecs.soton.ac.uk

Hi, We are looking for a second hand intel VLSiCE96 emulator. I have seen incomplete ones on eBay but would prefer the complete kit including the 'umbilical cord' and software. Does anyone still have these? We are in UK but may be able to arrange shipping etc. Thanks Colin

16 years, 7 months

1
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another magazine article request

by evan＠snarc.net

Anyone have the Nov. 1973 issue of Datamation? I'm looking for a scan of the article titled "APL for teachers".

16 years, 7 months

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Offer: HP Laserjet III and spare parts, non-working

by classiccmp＠philpem.me.uk

Hi guys, Does anyone want a HP Laserjet III? I've got one sitting on the floor next to me occupying valuable space, which quite frankly needs to go. Last time I checked it was flagging one of the two common Service errors (I think it was Service 50), and it's missing a button off the front panel (the one that goes underneath ON LINE). I've also got a spare toner cartridge (in unknown condition), and possibly a bag of spare parts that were scavenged off another LJ3 (that one had a dead laser scanner). Nuts, bolts, rollers, front panel buttons, that sort of thing. I might also have some modules, e.g. power supply, and almost certainly have a spare LJ3 motherboard that can go as well. If you don't want the full machine, I'm also willing to part it (or the Big Bag O' Spares) out. Let me know what bits you need... Quite frankly I need the space, and don't need the printer (my Kyocera laser speaks HP-PCL and "KPDL" aka PostScript quite fluently). If nothing happens with it "soon", it's getting scavenged then scrapped. Location is Leeds, West Yorkshire. Buyer collects, price is zero, zilch, nada if you take the whole bloody lot off my hands. If I have to get a screwdriver out and package things up to post, it'll be cost of post and packing materials... Cheers, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

16 years, 7 months

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Reanimating a PDP-11/23

by pontus＠Update.UU.SE

Hi all. I've been trying to get my 11/23 back on its feet. I've tried the following setup: KDF11-AA (M8186, CPU) MSV11-DD (M8044-DD, Memory) DLVJ1-M (M8043, SLU) BDV11 (M8012) The power check out ok and I've turned it on with the HALT switch up or down and get the following behaviour. With halt switch down: The run light goes out and all diods on the BDV11 lights up. With halt switch up: The run light stays on and the diods on the BDV11 indicates that the console terminal test routine is waiting for response >from operator on keyboard. In both cases I see nothing on my terminal (I tried both a vt100 and vt320) were I think I should see the ODT @-prompt. I'm not sure what to do next, any suggestions? Also, the AUX on/off switch does not work, how is it connected to the PSU? Kind Regards, Pontus.

16 years, 7 months

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Nitron

by wdonzelli＠gmail.com

I have a few Nitron NC7040LC chips - 24 pin DIPs. They have 1980 datecodes. Any idea what these might be? Who was Nitron anyway? I see some of the chip merchants on the net have some as well. -- Will

16 years, 7 months

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Nitron (more)

by wdonzelli＠gmail.com

Nevermind - I found the datasheet. I had a typo the first time I searched. -- Will

16 years, 7 months

1
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ASR-33 base

by chd_1＠nktelco.net

Does anyone have a base for an ASR-33 that they want to get rid of? Alternatively, is anyone willing to take some photographs of the base so that I can make a reasonably accurate facsimile? I would need 3 images: front, side, rear taken from about the middle of the base from the floor to make scaling easy. -chuck

16 years, 7 months

3
2
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Different take on 10 Yr. 'RULE'

by c.murray.mccullough＠gmail.com

A different interpretation on the 10 Yr. 'Rule'. Many experts, CPU mag being one, say that we shouldn't store info on CDs, DVDs, etc. as they may be unreadable in less than 10 yrs. Wouldn't it be sad if we lost valuable information on the classic computing era? I guess old-fashioned paper is the best way after all! Let's hope these technologies last longer than my Zip-drive and disks that can't be read because the drive died and I can't get it fixed or at the very least at a decent price. So Sad! Murray--

16 years, 7 months

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cctalk Digest, Vol 76, Issue 12

by shoppa＠trailing-edge.com

On 5 Dec 2009 at 10:41, Fred Cisin wrote: > Machines were designed to perform to certain benchmarks. Anyone > remember Saxpy (the company, not the LINPACK deck)? Anyone have one > of their machines? Ah, I remember Saxpy Computer Corporation to be in the same vein as Alliant and Sequent etc. A little different than the SEL/Gould processors but not too much (somewhere I have a "Firebreathers from Gould" button, must be 1986? 87?), and probably closer to the bolt-on vector coprocessors. But no, other than hearing their sales pitches never saw one. I'm not sure I knew any labs that bought one. OTOH Alliant and Sequent got into lots of engineering labs and even schools in that time frame. Tim.

16 years, 7 months

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V20 processor

by alec＠sensi.org

JFYI: http://en.wikipedia.org/wiki/NEC_V20 Welcome to correct/update! -- -=AV=-

16 years, 7 months

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wanted - 5380 SCSI controller

by jack.rubin＠ameritech.net

I'm looking for one or two NCR/AMD 5380 SCSI chips (40 pin DIP) to restore an Ampro Little Board Plus. Will pay a reasonable price or trade a couple of motley Xerox I mobos + docs (one has a Ferguson RAM enhancement daughter board). Please reply to me directly. Thanks, Jack

16 years, 7 months

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Transdata teletypes

by evan＠snarc.net

Anyone know much about Transdata teletypes from the early/mid-1970s? Google doesn't show much. I'm interested in the company itself. What's the story of Transdata, and what became of the company? Links / articles / etc. would be appreciated. Thanks. - Evan

16 years, 7 months

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Mosaic-CK 2.7ck8

by spectre＠floodgap.com

Mosaic-CK is a fork of NCSA Mosaic I maintain as a "Lynx with graphics" for various older operating systems, including Power MachTen, but also as a historical simulation of the early days of the World Wide Web that can run on modern operating systems as well. It currently builds on Mac OS X and Power MachTen, and there is now experimental support for Linux once again. This current version adds: - Split rendering: (default) alternative renderer with - UTF-8 and Unicode translation (partial) - Larger HTML subset support versus the classic renderer, toggleable on the fly - Progressive rendering, to ameliorate page loads - Bug fixes, custodial cleanup, etc. A Universal Binary is available for Mac OS X 10.4+. It requires X11 and (free) OpenMotif. http://www.floodgap.com/retrotech/machten/mosaic/ -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- Life isn't fair. But having the root password helps. -----------------------

16 years, 7 months

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Computer auction in Vancouver BC

by ball.of.john＠gmail.com

Word has come down the line to me that six people showed up during registration hours and only three people actually registered. Unfortunately a minimum of 12 people were needed for the auction to go ahead and thus it has unfortunately been cancelled. >From what I have heard, what has already been consolidated will be consolidated again into a single skid and put into storage until another date. Anything that does not make it onto that skid will end up being recycled and it has to be out of the warehouse by Monday so it will be vanishing pretty quickly. Too bad. There was some pretty nice stuff there too.

16 years, 7 months

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Pinging Philipp Hachtmann

by quapla＠xs4all.nl

Hello Philipp, please contact me, I have several items ready for you. Regards, Ed -- Certified : VCP 3.x, SCSI 3.x SCSA S10, SCNA S10

16 years, 7 months

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Anything worth visiting on my way to fond du lac tomorrow?

by brianlanning＠gmail.com

I'm buying a car in fond du lac tomorrow. Anything worth stopping and seeing? Anyone along 41 or 94 who wants to trade? brian

16 years, 7 months

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Kagan barn destroyed

by wdonzelli＠gmail.com

I am surprised this has not made list news yet. Claude Kagan had a terrible fire yesterday morning that completely destroyed his barn. The barn was fairly well known to many East coast collectors, as it was the home of the RESISTORS, a group of 1970s teenage hackers, as well as being the home of his collection of interesting technological items, including quite a few computers. Claude is unharmed and in decent spirits, and his house is unharmed, except for lack of electricity. The barn held many interesting machines over the years. Every so often Claude would let one go - sometimes to individuals, other times to museums. At the time of the fire, he still had some AT&T 3B2s, a Teletype 37, a Symbolics 3670, a more or less complete small town Central Office complex, and most importantly, the legendary Burroughs B205. Claude and I had just started to clean up the barn three weeks ago, and while I pulled out a good pile of very good documentation, much was lost. It is likely that there is little or nothing that can be saved. I made an emergency side trip today to help out, as I was down in New Jersey anyway. The destruction is total. The Burroughs is sticking out of the rubble, gutted and stripped of paint. The Burroughs is dead. -- Will

16 years, 7 months

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Help to identify "chip"

by alberto＠a2sistemi.it

I've found this little board, similar to a processor board: the chip with heathsink can be the microprocessor and the other cache ... but I'm not sure I've search information, with the codes in the label, but no answer. Can someone help me ? These are the pictures (big, 500K each) Front http://www.retrocomputing.net/parts/varie/chippone/modulo_sconosciuto_dr itto.gif and rear http://www.retrocomputing.net/parts/varie/chippone/modulo_sconosciuto_di etro.gif ------------------------------------------------------ Alberto Rubinelli Mail : alberto at a2sistemi.it A2 SISTEMI Web : www.a2sistemi.it Via Costantino Perazzi 22 Tel 0321 640149 28100 NOVARA (NO) - ITALY Fax 0321 391769 Skype : albertorubinelli Mobile +39 335 6026632 MUSEO DEL COMPUTER / COMPUTER MUSEUM http://www.oldcomputers.it Mail:info at oldcomputers.it Tel 0321 1856032 Fax 0321 2046034 ------------------------------------------------------

16 years, 7 months

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Fluke 9000A probes available

by hp-fix＠xs4all.nl

As it says, I've two Fluke 9000A available for a little beer money or trade for HP stuff.. Located in the Netherlands but int' shipping is no problem and should be not to expensive (flat rate envelope) Please contact off-list -Rik

16 years, 7 months

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