test-drb

test-drb@ccmp.vtda.org

101090 discussions

by mark＠wickensonline.co.uk

Hi, just a quick enquiry. I have aquired a DEC 3000 Model 800 AXP and have a boot problem. The system was booting about once every ten power ups. The status LEDs don't move in the case where the system checks do not 'kick in', they remain on '00'. I have cleaned the entire box and used contact cleaner on all connections, and re-seated the motherboard and IO module. Previously when the system did 'kick in' all tests completed correctly except the keyboard/mouse test. I am using a VT520 connected via an original DECconnect cable. I managed to install both OpenVMS 6.1 (the original disk received with the unit) and OpenVMS 8.3 (although this didn't boot, but probably due to the fact that I selected DECnet but don't have any thick/thin cables connected). Sorry to be so long winded. So the question is, apart from reseating/ cleaning cables/connections, is there anything else I could check/test/ try? I have enough competence to measure voltages and possibly even power ripples and the like, but I don't have a logic analyser. Do the SROMs age at all? It is a standard x512 EEPROM. It has a sticker over the programming window (assuming it has one). Is there a battery backed module that could be causing intermittent problems? Additional information: I intermittently get the following error: ASIC ?? 002 0020 T-ERR-ASIC COREIO address = f0080280 data read = 0 data exp = aaaaaa Code 'EF' is displayed on the LEDs. Does this, and the 'not booting at all' indicate a problem with the SROM/EEPROM? I flashed it recently to version 7.0, the latest, but I think it was having this problem before it was flashed. Thanks, Mark.

18 years, 9 months

Catweasel NorthStar project

by lynchaj＠yahoo.com

I've started a project to use the Catweasel for making images of NorthStar hard sector disks. I have some working code. It is not ready for public release. Please contact me offline if interested in being a developer. The code is not available publicly at this time. Thanks Andrew Lynch

18 years, 9 months

WTD: Epson PF-10 Drive Utility Disk

by billdeg＠degnanco.com

I'm looking for a copy of the utility disk that went with the PF-10 disk drive, used with the Epson Geneva PX-8 laptop. Alternatively is there a ROM that has the commands to re-build a utility disk? Thanks. Bill

18 years, 9 months

Fwd: CS1000 Virtual Reality system for sale!

by aliensrcooluk＠yahoo.co.uk

No idea whether he is truely serious or not, but those interested should contact him (see below). Regards, Andrew B aliensrcooluk at yahoo.co.uk lamanchaoslo <lamanchaoslo at hotmail.com> wrote: To: Commodore_Amiga_Retro at yahoogroups.com From: "lamanchaoslo" <lamanchaoslo at hotmail.com> Date: Sun, 26 Aug 2007 02:30:16 -0000 Subject: [Commodore_Amiga_Retro] CS1000 Virtual Reality system for sale! I'm considering selling a 1000CS VR System. At the moment I have two machines that we are about to combine into one working machine. More on the machine here: http://www.amigahistory.co.uk/virtuality.html Please contact me for more info on the condition of the machines, offers etc.

18 years, 9 months

Diablo 620 Printer and RO Terminal

by compoobah＠valleyimplants.com

It is for sale/trade, and currently located in Renton, WA

18 years, 9 months

Model 100 tape archiving question

by rcini＠optonline.net

All: While cleaning up the shop I found a few Tandy Model 100 cassette tapes. What is the best way to archive them? I?d like to do two things ? first, make a reproducable copy. Second, have a data extraction so I can add support for them to the VirtualT emulator. Any ideas? Thanks. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://highgate.comm.sfu.ca/~rcini/classiccmp

18 years, 9 months

IBM 5294 Controller, IBM 5251 Display Station Model 12 with Keyboard and manual

by sttaylor＠charter.net

Any interest http://inlandempire.craigslist.org/sys/400141802.html

18 years, 9 months

*workstation* monitors

by chrism3667＠yahoo.com

I realize that these are the things least likely to get held onto, due to their mass and bulk, but if anyone should happen to have a large screen color or b & w monitor they're looking to get rid of, let me know. The b & w units were somewhat common on top of Macs, and any such thing would be uncommon on a peecee, particularly an early unit (< 48khz horizontal frequency) which is what I would want in the way of a color model. Reasonably good condition, and *reasonably* close to Pennsylhoma/New Jersey. I can't give specific models, but I'd happy to do the research if you can provide a model. ____________________________________________________________________________________ Pinpoint customers who are looking for what you sell. http://searchmarketing.yahoo.com/

18 years, 9 months

Looking to buy some parts to finish up restoring three older Suns...

by earl＠baugh.org

I'm looking for the following to finish up the work on some VME Suns. 1) 6 Screws for Sun VME chassis -- Hex ones for holding VME boards in the chassis 2) 2 of the thick plastic logos -- Sun 3/110 and Sun 4/110. The kind that were mounted to the 3 slot VME chassis. 3) The front plastic panel for a Sun 2/120 I've got some $$ for purchasing these, if I can find a source... Earl

18 years, 9 months

SCSI/IDE laptop adapters

by sw＠tiac.net

Hi, this message is a kludge to get through to der Mouse, but you-all may find it interesting. I have two of those Century CHB25INT adapters (but I'm not willing to sell one right now). See: http://www.tiac.net/~sw/2006/03/scsi_to_ata/index.html I paid about $100 for a single unit direct from Century.co.jp . Mouse, you sent me email about my SCSI/IDE adapter experience. My reply below is proceeded by the kind of bounce I got trying to send it: >From: Mail Delivery System <Mailer-Daemon at elasmtp-masked.atl.sa.earthlink.net> > mouse at Rodents.Montreal.QC.CA > SMTP error from remote mailer after initial connection: > host Sparkle-4.rodents.montreal.qc.ca [216.46.5.7]: > 550-I won't talk to 209.86.89.68 until 2007-08-25 17:05:48 UTC, because > 550 it keeps connecting and then not sending anything. >http://www.tiac.net/~sw/2006/03/scsi_to_ata/index.html gives your >address. I was looking for just such a thing, but for a SPARCstation >Voyager rather than an Apple laptop; this page looks very helpful. >Thank you. I haven't had perfect results with the adapter I talked about in that page. I was able to boot, copy 250MB files, etc., but invariably the computer would hang after a while (in a way it doesn't do without that disk installed). It could be The ATA disk The adapter design The particular adapter The driver I have installed, or its timing parameters Apple's SCSI implementation (has been buggy on me before) External SCSI Zip and/or CD drives I had plugged in at the same time. Mac OS 8.1 problem with big HFS+ partition? Some unrelated problem with this OS on this laptop?? The hang-up does seem to happen when using the disk, but then, that's all I was doing! Probably with more time or expertise I could narrow it down since I have two disks, two adapters, and multiple sources of drivers. Thanks for the SCSI details. No, I'm not sure about 66-pin SCSI. --Steve

18 years, 9 months

DEC switch handles

by bfranchuk＠jetnet.ab.ca

How many people need replacement switch handles for DEC switches? How many and what size and colors? I wonder if we can get the quantity needed and have a custom order made in china? Ben alias Woodelf

18 years, 9 months

Datapoint Yahoo mailing list

by aek＠bitsavers.org

For people interested in Datapoint, there is a mailing list, but it is not very heavily used. Unfortunately, it is moderated, and it may be several days before messages get approved. http://tech.groups.yahoo.com/group/DatapointComputers/

18 years, 9 months

Datapoint 1800 firmware listings

by aek＠bitsavers.org

I scanned a set of microcode and boot rom listings for the Datapoint 1800 over the weekend, along with some technical information on the later Datapoint machines under http://bitsavers.org/pdf/datapoint Hopefully, some more technical info on the later machines will surface. I think Jack Rubin mentioned that he had some.

18 years, 9 months

HP 264x firmware listing

by aek＠bitsavers.org

> There are several binders that cover tape, graphics, terminal, I/O and > so on. I can try to scan it if you like. That would be good to have scanned. I have machine-readable versions of the base firmware for the terminal. > I also have the complete > maintenance manuals for the terminal and interface boards, including > schematics, but they are difficult to scan due to the paper size. I have most of the manuals scanned (there were MANY options available for the 264x). The only practical way to scan the 11 x long sheets of schematics HP uses is with a wide sheet feed scanner (like the Ricoh IS520 or Kodak 2500d) and do it in overlapping sections.

18 years, 9 months

HP 264x firmware listing

by aek＠bitsavers.org

The GMD Reduction Machine used an HP 264x series terminal with modified firmware as an I/O device. Listings can be found at: http://bitsavers.org/pdf/gmd/reductionMachine/terminal Of particular interest is 2.file.pdf which appears to be firmware for controlling the tape drives.

18 years, 9 months

Vax-11/750 diagnostic tapes

by iamvirtual＠gmail.com

I am trying to get a Vax-11/750 running. I have a box of TU58 tapes that are marked 'diagnostic tapes'. The tapes appear to be used by Dec field technicians, since the tapes are marked 'Property of DEC'. The label on the first tape is as follows: BE-S0290-DE TU58 #1 11750 MICRO DPM PROPERTY OF DEC (C) 1981,83 What do I need to do to execute these diagnostics? Specific commands would be very helpful :-) I have not come across any references to these tapes in the limited documentation I have found. Do I need to boot from the console tape and then boot from the diagnostic tape? As you can probably tell, I am somewhat lost at the moment. I want to ensure the basic machine is running properly before I hook up a disk drive. I have a RDM card that is not currently installed. Is it better to use the diagnostic tapes, or, use the RDM card to detect hardware issues? PS. I am also fixing the gooey roller on the TU58 drive, what type of Tygon tubing do I need? ;-) Thanks! --barrym

18 years, 9 months

DEC RX02 Maintenance

by oldcpu2＠rogerwilco.org

[NOTE: My apologies for raising issue of magnetic media all over again, but I can never seem to get the search function to work on the archives, so the best I can do is depend on Google to have some of the old threads in it's DB. (Jay, this is not a criticism, I'm sure I'm doing something wrong, but in my two years on this list, I've never gotten anything out of the ht://Dig searcher, even with a simple word like 'diskette'.)] I've started to image the hundreds of RX0n diskettes I have acquired from various sources for cataloging and preservation. I'm using my real, live PDP-11/23PLUS with a dual-drive RX02 unit, and I've run into something I've never seen before. Recent discussion has gone over the reliability of magentic media pretty well of late, but frankly, I was very, very surprised to see several of these 8" floppies shedding the oxide layer and leaving a transparent ring (okay, I flipped the diskette over hoping spinning it the other way briefly would help) in the substrate I can see through! I was holding the diskette to the light to get a better look and discovered the oxide completely scrubbed off. Track 0 was clearly (pun intended) a goner, so I tried my fingernail (lightly) and could just flake the oxide off of the substrate. The brand is one I've never heard of, ANSCO, and gladly there are only a handful of this brand in my pile. I've heard about this problem, here and elsewhere, but I was not prepared to experience it myself! Anyway, the heads in the drives are now in serious need of cleaning, and I'll probably just dip a little isopropyl on a swap and see if I can get them clean. But I've now found a new problem. It looks like the little presser pad on my Drive 1 is missing on the top arm. That may explain why that particular drive is sometimes less reliable at reading and writing. Q: What's a good replacement material for the presser pad? Can I simply use a little bit of dime-store felt, or is there something more exotic that I should use? Also, since acquiring this system, and others, all with RX02 dual-drive units, I've notices some drives read more realiably than others, that is until I write to the diskette, then the landscape changes again, with respect to which drive will read that diskette reliably again. Q: Is there a source for 8" alignment diskettes? I recall one or two of the regulars on the list mentioning having them. Is there a way to make a duplicate? Or at least to format a diskette on a drive that's been through the alignment gig? It'd be nice to get my hands on one or the other. I'm happy to spring for postage and refreshment. Thanks. - Jared

18 years, 9 months

HP computers on Stargate SG-1

by Tim＠Rikers.org

So I'm watching old Stargate SG-1 episodes getting ready for the upcoming movies, and in a scene from Season 2 episode 20 titled "Show and Tell" I find: http://rikers.org/tmp/sg1hp.jpg Guess it's apparent why dialing the gate takes so long. They have not upgraded the computers since the 70s. Looks like an HP-2112 or 2113 to me. The hard drive below it is newer than my HP-7901 drives. I'm guessing HP-7905 or HP-7906. Anyone see any other vintage computers on the set? -- Tim Riker - http://Rikers.org/ - TimR at Debian.org Embedded Linux Technologist - http://eLinux.org/ BZFlag maintainer - http://BZFlag.org/ - for fun!

18 years, 9 months

INS4004D in Pro-Log M900 PROM Programmer

by dkelvey＠hotmail.com

> From: sellam at vintagetech.com> > The manual has a very good troubleshooting section. When I have some time > I'll try to find out what the problem is. In the meantime, I sure wish I > could get this Apple ][ Copman EPROM Writer card I've got working.> Hi Sellam The card can't be too complicated. Why not do a little reverse engineering on it. Dwight _________________________________________________________________ See what you?re getting into?before you go there http://newlivehotmail.com/?ocid=TXT_TAGHM_migration_HM_viral_preview_0507

18 years, 9 months

INS4004D in Pro-Log M900 PROM Programmer

by sellam＠vintagetech.com

Curious, I tried the other one I had and it didn't work with the 2716 module either. But when I tried it with the 2708 Gang module that it came wih it worked fine. Suspecting a bad module, I tried the 2708 Gang module in the first one but it didn't work with that either. So not only the 1st M900 I have is bad but so is the 2716 module that came with it. Doubly weird. The manual has a very good troubleshooting section. When I have some time I'll try to find out what the problem is. In the meantime, I sure wish I could get this Apple ][ Copman EPROM Writer card I've got working. -- 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 ]

18 years, 9 months

Apple ][ Copam EPROM Writer documentation?

by sellam＠vintagetech.com

Does anyone have the documentation for the Copam EPROM Writer for the Apple ][? It's got a ZIF socket on it and the software in ROM, but I am having trouble reading any EPROMs so I want to make sure I'm inserting them properly (the board and socket have no markings). 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 ]

18 years, 9 months

INS4004D in Pro-Log M900 PROM Programmer

by sellam＠vintagetech.com

Not to cause a run on Pro-Log PROM programmers, but the M900 at least has an INS4004D microprocessor (National Semiconductor 4004 second source) at its heart. I only found out because I'm trying to figure out why this M900 isn't working and opened it. I re-seated all the chips, hoping for a quick fix, but no go. Are there any known, simple to fix faults on these? It powers up, power supply is good, no output on the LEDs other than transient voltage spikes on startup causing individual elements to momentarily light. Otherwise, no activity. -- 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 ]

18 years, 9 months

Catweasel NorthStar project

by lynchaj＠yahoo.com

18 years, 9 months

Building my own classic style computer update

by fjkraan＠xs4all.nl

Somehow I missed the original, but this are my 2 cents; > Message: 6 > Date: Fri, 24 Aug 2007 23:52:47 +0100 (BST) > From: ard at p850ug1.demon.co.uk (Tony Duell) > Subject: Re: Building my own classic style computer update > To: cctalk at classiccmp.org > Message-ID: <m1IOi1N-000J3FC at p850ug1> > Content-Type: text/plain > > >> I have been scrounging for parts for my computer, and I believe I have hit >> the jackpot. A friend of mine set me up with some older Seiko control system >> boards, various revisions, from the late 80s. On them are many ICs, >> including RAMs, Z80 CPUs, and PIOs, as well as some AMD Arithmetic >> processors, a Z80 SIO/2, and other various components. I want to try to make >> my computer from these components. Can anyone point me in a good direction >> for the datasheets, preferably online, for these mostly obsolete ICs? Some >> of them I don't even know what they are, and some I cannot find online, >> presumably because they are obsolete. Here's a partial list of them: >> NEC D780C >> > > AFAIK it's an exact equivaletn of a Z80 CPU. I've never found a circuit > that works with one and not the other. > Nec states it is pin and software compatible in their 'Microcomputers 1983/1984' data book. > >> NEC D770008AC-6 >> > > No idea > Not in my databooks. > >> NEC D4364C-15L >> > > I guess that's a 64K*1 DRAM, similar to a 4164 > Static NMOS RAM 8k x 8 > >> NEC D8251AC >> > > Equivalent to the Intel 8251, National Semiconductor INS8251, etc. It's a > USART > > >> NEC D449C >> > > No idea > Static NMOS RAM 2k x 8 > >> AMD AM9511A-1DC >> > > AMD floating point chip > http://electrickery.xs4all.nl/comp/dai/doc/AM9511.pdf. If you decide not to use this part or has some spare, I am very interested. I still have a DAI computer with a socket waiting for such a chip (http://www.xs4all.nl/~fjkraan/comp/dai/index.html). > >> Sharp LH0081A >> A Z80 PIO clone >> Sharp LH0082 >> > > No idea > A Z80 CTC clone Fred Jan

18 years, 9 months

Diablo 620 Printer and RO Terminal

by compoobah＠valleyimplants.com

The printer is back, cleaned, tested, and fully working with manual, 5 typewheels, and 7 carbon ribbons. Since I've put several hours into it, it's no longer free, but if anyone wants it make an offer.

18 years, 9 months

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