test-drb

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101090 discussions

by adamg＠pobox.com

Seth J. Morabito wrote: > Does anyone have any guidelines about making archival images of > CD-ROM media? For years, I've been using dd on Solaris or Linux > to dump the raw bytes of CD-ROMs, and cdrecord if I want to make > a copy from the raw image, but I don't know if this is considered > "good enough" to preserve all the associated filesystem and partition > structures of the disc. It has been for me, so far, but I'd like to > hear other opinions on the matter. How do you archive CD-ROM images? As long as there's only one track on the CD, dd on Linux will grab everything. On Solaris you might have to be careful to pick the right device node so you grab the whole thing. On MacOS X you definitely have to pick the right device node -- the one time I tried it, I picked wrong and only got one partition. Multi-partition discs usually have just one track containing all partitions. If you want to be sure you can "cdrecord -toc", if there's just one data track, you're good. Some discs actually do have more than one track. The SunCD demo disc is an example. It has a data track (probably with multiple partitions, I don't remember) and a few audio tracks. Some combination of dd (or readcd -- see below) and cdparanoia should be able to copy discs like this. I usually use dd, or even cat, on the first try reading a disc, just out of laziness. But there's a program 'readcd' (part of the cdrtools suite, IIRC) which is a little more sophisticated. In particular, if a disc has a marginal sector or two, dd will give up, but readcd will retry until it gets a good read. Another note, if you are reading CD-Rs which were written in TAO mode, you will get some empty sectors appended to the end, then an I/O error as your drive tries to read past the leadout. But you're not actually losing any data. -- Adam

19 years, 7 months

(no subject)

by drb＠msu.edu

Anyone have a rev. E or later ROM for an Emulex QD21? Thanks, De

19 years, 7 months

EBCDIC

by ygehrich＠yahoo.com

At 08:22 PM 10/26/2006 Ethan Dicks wrote: >I used to use EBCDIC on a regular basis when I made HASP/3780/SNA >gear... now, I think I can only remember 'space' and the numbers.* Yes but do you remember good old BCD

19 years, 7 months

looking for the HP Vectra ('286) and Televideo Telecat

by chrism3667＠yahoo.com

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19 years, 7 months

looking for the NCR PC4, PC6, PC8

by chrism3667＠yahoo.com

please inform. Thanks. I do have 2 PC4's in *very* questionable condition if anyone is interested (for shipping). I'm primarily looking for the color version of the 4. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

19 years, 7 months

TRS-80 Model 16

by kelly＠catcorner.org

> Sent: Thursday, October 26, 2006 5:41 PM > To: General Discussion: On-Topic and Off-Topic Posts > Subject: TRS-80 Model 16 > > > I've got a TRS-80 Model 16 that I'm going to put on ePay, but I'd > like to clean some of the grunge out of the half-height Tandon 8" > diskette drives. > > In a nutshell, can someone tell me the easy way to remove these > drives from the case? > Model 16 or 16B? The procedure is different. If it is a 16b: Remove slot access cover in back. Turn the computer over (feet up) Remove the 10 or so screws from around the case Turn back over, being carefull to keep it together. From the front of the unit, lift top shell and rotate left the CRT stays attached to that piece of the case you lift up You should now see the floppy cage on the right Remove all the screws from around the cage and the two drives should come out as a unit. If it is the original 16: Remove the two back screws from the case cover. Remove this. Remove all the screws from around the front (CRT) bezel. It should drop off, with the CRT attached. You should now be able to get to all of the screws If this is an original 16, please let me know when you list it. If you're interested in private sale, let me know. I'll send an offer that you can either accept or ignore. I wouldn't even ask you to clean the drives. If you need it, I can scan in an exploded diagram from the two service manuals. Kelly

19 years, 7 months

TRS-80 Model 16

by cclist＠sydex.com

I've got a TRS-80 Model 16 that I'm going to put on ePay, but I'd like to clean some of the grunge out of the half-height Tandon 8" diskette drives. In a nutshell, can someone tell me the easy way to remove these drives from the case? Thanks! Chuck

19 years, 7 months

Floppy drive box thingie; was: Re: Wow; $192 for a 5.25

by cclist＠sydex.com

As long as we're talking about it; here are a few more ideas to consider. 1. The Catweasel uses a selectable clock rate to obtain a clock count that will fit in 7 bits. My gripe with this is that I have to read a track or two (if different densities on the same disk) to determine the correct clock rate. There's little worse than finding out that you've guessed wrongly and your image is worthless. If we're going to employ a dedicated MPU/MCU to handle this stuff, why not go with a 10- or 11-bit clock rate and get rid of the rate selection? One of the spare bits could be used for index detection on hard-sectored disks. 2. Some drive diagnostics should be incorporated. Particularly with 5.25" drives, old sticky floppies can really drag the rotational speed down. I'd really like to know that it's happening. 3. I can envision this device as a small box, powered by a wall wart with an RJ-45 ethernet connector and on or two DC-37 female connectors for drives. Given that this thing's going to be used for all manner of drives, there's no compelling reason to provide drive power as part of it. 4. DHCP is a nice feature, but not all vintage networks support it. The option of a fixed IP address (192.168.x.x) would be a plus. 5. Should the box also supply the drive for older 8" drive 3-phase steppers? How about the head-load signal? That's it for now--I'm sure I'll think of something else! Cheers, Chuck

19 years, 7 months

Wang 2200

by wb6blv＠inreach.com

Looking for a WANG 2200 MVT system or anything that will read Wang 5 meg removable platters; 8 inch floppy drive also needed; have many of the Wang terminals but a spare mpu might be nice. Thanks John WB6BLV at inreach.com

19 years, 7 months

Intel BPK-72A-4

by cclist＠sydex.com

For collectors of arcana out there, I've listed an Intel bubble memory development kit on ePay: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=320042426869&ssPage Name=ADME:L:LCA:US:31 I never got around to using it--after I discovered the power requirements of the thing, I moved on to battery-backed SRAM instead. :) Cheers, Chuck

19 years, 7 months

HP CP/M system - [WAS Re: Craziest ebay price EVER]

by Glen.Heiberg＠gijima.com

Warren wrote: ================== Oh, yeah, the GPIB reference reminds me... I've got an HP CP/M machine, too, that looks like their old brown monitors, with a standalone dual diskette drive that connects via HPIB. I forget the model number... Cripes, I've got old computers stashed all over the place. ================== Must be an HP 125; if it's a 3.5" disk drive, chances are it's an HP 9121D.

19 years, 7 months

CD-ROM archiving

by sethm＠loomcom.com

Hey folks, Does anyone have any guidelines about making archival images of CD-ROM media? For years, I've been using dd on Solaris or Linux to dump the raw bytes of CD-ROMs, and cdrecord if I want to make a copy from the raw image, but I don't know if this is considered "good enough" to preserve all the associated filesystem and partition structures of the disc. It has been for me, so far, but I'd like to hear other opinions on the matter. How do you archive CD-ROM images? Does anyone use any special software or have any tips? -Seth

19 years, 7 months

Intel MDS and Mohawk

by cclist＠sydex.com

I was going over some old 8" Intel diskettes and discovered some that have the legend "MDS is a registered trademark of Mohawk Data Science Corporation" Does anyone remember when Intel started adding the asterisked text to "MDS"? Cheers, Chuck

19 years, 7 months

Western Union self-winding clock

by jedwards4＠cinci.rr.com

Saw your note re self winding clocks on the net and that your dad had one. I am also in possession of one and trying to find the value of it. Have you or your dad ever come across a book(s) or web site that provides some type of value to these clocks. I have tried using the web search engines without any success. Matter of fact that is how I found your request. Any assistance or help you could provide would be appreciated. Jerry Edwards

19 years, 7 months

Western Union self-winding clock

by jedwards4＠cinci.rr.com

I am a former Western Union employee and while there I got my hands on one of the self winding advertising clocks WU offered with its time service. Saw your articles on the web and wondering if you could point me in the direction of a web site or book(s) that I might be able to find the value of this clock. As information, I have already tried using most of the web search engines such as Google, MSN, Yahoo etc., without much success. Matter of fact that is how I found your articles. Any help or assistance you could provide would be very much apprecated. Jerry Edwards

19 years, 7 months

Wanted: OS / diag media for Altos 886

by rescue＠hawkmountain.net

I have an Altos 886 that apparently has corrupted boot blocks... and need to locate a copy of Xenix and probably of the SDX ? diagnostics in order to get it back up and running again. As I understand it, this system ran Xenix 3.2f, and it had to be the Xenix specifically for the Altos 886 (i.e. not 'generic' SCO Xenix). So, anyone out there have installation media that they care to part with or make copies of ? (copying may be difficult as these are Quad density 5.25" media as I understand it... 720K I believe (80 tracks double sided double density)). Thanks, -- Curt

19 years, 7 months

Faraday cages ( was Re: staticy plastic tubs )

by aliensrcooluk＠yahoo.co.uk

--- Ray Arachelian <ray at arachelian.com> wrote: > aliensrcooluk at yahoo.co.uk wrote: > > > > err... what's a Faraday cage? > > > When in doubt, google it. :-) Here's a good answer : > http://en.wikipedia.org/wiki/Faraday_cage > Ahh, thanks. I had forgotten about Google (not surprising since I have been working 8.5 hour days for the past week and only getting 6 hours sleep each night). I don't like to rely too heavily on Wikipedia as (like alot of information online) you can't be sure what's right or wrong, unless someone knowledgeable in the subject can confirm it. So if I understand correctly, the outer casing of a harddrive acts as a Faraday cage? My (4GB) Toshiba ones I use in my Amiga 600 have circuitry on the underside, but I suspect that may stop it being a Faraday cage, unless it's stuck onto the outside of the unit. Regards, Andrew B aliensrcooluk at yahoo.co.uk

19 years, 7 months

vax 1000 matching monitor

by ying6926＠ureach.com

We had one monitor Phillips C1435-AS that goes with a DEC Vax 1000, but the monitor is dead now and it has DB9 female connector. Does any one know the specification of this so that I can find a match or does anyone know of video card on vax 1000 computer? I was told it is typically EGA signal out of vax1000 and I was told by some people it is actually analog signal with DB9 connector with special pin match. Any help would be appreciated. Henry

19 years, 7 months

RL02 latch cable

by jwest＠classiccmp.org

Does anyone have some experience with the best way to "lubricate?" the cable in the top cover of an RL02 drive? I can't tell for sure if the cable is wire or plastic or plasticoated wire or fiber..... The issue is probably typical... when you release the hand operated slide the clasp on the top cover at the front doesn't slide back all the way to latch the top closed. I am sure that it is not the spring in the front latch. Moving that by hand, there is plenty of spring tension left. The problem is definitely that the cable between the front latch and the hand operated slide isn't "sliding" in the channel. What good way have people found to address this. If it's fiber I was thinking of sliding the cable through wax once or twice. Is there a better way? Graphite would seem a bad idea.... Jay

19 years, 7 months

Kennedy 96xx series docs on line

by aek＠bitsavers.org

I was able to obtain copies of most of the 96xx series manuals last Friday, so they are now on line on bitsavers.org/pdf/kennedy including the docs for the SCSI interfaces. They were a challenge to find.. Still looking for the schematics for the HP 88780

19 years, 7 months

OT: GONE! Items looking for new home - DEC PCs, MV3100, BA350, misc SCSI drives and cables (MA, USA)

by jpeterson＠chinalake.com

All gone! Wow, I thought it would take days, not seconds. If I ever need an organ transplant, I am posting here first. Cheers, -Jim

19 years, 7 months

Classic hardware at the bottom of the world (was Re: Anyone have a datasheet for a Datel MX-1606?)

by ethan.dicks＠gmail.com

On 10/25/06, Dave McGuire <mcguire at neurotica.com> wrote: > I am green with envy, Ethan. Yes I'd freeze my butt off (hey I'm a > Florida boy) but man it'd be worth it to see that place. Our low is typically around -100F to -110F (the record is somewhere around -117F, IIRC) This time of year, -60F to -75F is common. > What cool (non-work-related) hardware do you have down there? I brought plenty of cool non-work-related hardware... my SBC-6120 w/FP-6120 and IOB-6120, a Spare Time GIzmos Embedded Elf w/disk interface, an Elf-2000 w/STG1861, a STG mp3 player, an RB5X robot (INS8073-based), an MC-1N microcontroller (also INS8073-based), several LCD and VFD displays for LCDproc (http://www.lcdproc.org), a "Real Console" 6809 board, a MicroElf, a couple of binary clocks, some Atmel microcontrollers, and a modernish (2002) 6502 SBC. I think that's most of the toys I brought to get through the night. I also have Amiga Forever, simh and klh10 for emulation of various boxes (I used to bring an Amiga down, but now it's just too large to justify). Plenty of toys here. Now I just have to pack them up and take them home. -ethan

19 years, 7 months

11/34 rails sought

by jwest＠ezwind.net

My last PDP11 restoration to do yet is a 11/34 in an H960 cabinet (I'm skipping the /45 for now, jumping over it to maintain sanity and until help strikes me upside the head). I believe the only thing I'm missing to start the /34 project is a set of the "tip up and lock" rails for the /34 cpu itself. Anyone have a set they'd like to trade or sell? I have to get back to classic computing restoration or the basement will continue to decrease in space instead of increase ;) Jay

19 years, 7 months

OT: Items looking for new home - DEC PCs, MV3100, BA350, misc SCSI drives and cables (MA, USA)

by jpeterson＠chinalake.com

OT: not actually classic systems but interesting and/or useful as DEC hardware I am working my way through storage. Several DEC PCs need a new home as well as an MV3100-80, several DEC SCSI drives and cables, etc. The PCs are not 'classic' but are part of the DEC story. All free with the caveat that you will not turn around and sell off the systems or memory--people with sharp pointy oscilloscope probes will visit you in the night if you do. I will, however, never turn away donations of cash or Guinness, to support body and soul. The units have been in climate managed storage for what that's worth. I am in metro-west Boston, MA and will deliver within a reasonable distance. I will also ship anything if you cover costs. Photos of systems avail at: http://chinalake.home.comcast.net/decstuff/index.html . Queries to whatpdp at chinalake com. Cheers, -jim ------------------------------ DEC PCs: No keyboards or external cables unless noted. If there is some special cable needed, I can dig around in the boxes. Digital PCP12 386/25 laptop (~1992/93?) Also seen w/ Panasonic label in RS stores Interesting note is the integrated mouse Have docs, power, spare battery, and util disk DEC Celebris Pentium 166/133 Slim case design w/ 16 bit ISA (AT) and PCI Removable cache card and processor power factor card Have the green/blue "Celebris" label - Removed when evaling and never got back on. Have docs and disks. DEC Workstation 200i2 Dual PPro/180 or 200 Could come configured either as intel or Alpha by swapping a good chunk of the system board. Not as neat a design as the 486/ST intel/Alpha. Friction latch for front is broken off--mostly a cosmetic issue. Docs and disks. Orig shipped with the two RZ28D scsis below, but now had IDE on built in controller. Collector has first dibs on the drives. Controller when I can locate it (apaptec 2940W). This system's last job was running some flavour of S/370 via Hercules on Linux. DEC DECpc 486 Workstation "Clam Shell" PCW10-A2 Slim design. Connected via a short SCSI cable to its SCSI storage unit. Together it had a clam-like appearance. Support for LK keyboard and had a large Appina video board DEC DECpc Storage box for the DECpc PCWXE-A2 Two HH 5.25 openings and one hidden (holding RZ24-LE) Have the connecting cable for this unit. The unit is generic SCSI, but I will only dispose of it with the PC. There is also a VAXMate if I can find it. In a month or two, two SOLs and Helios drives will be up on ebay. --------------------------- MV 3100-80 RAM: 72 megs Storage: Two RZ25 Ext SCSI (AMP 50 connector) w/ term DWS41 Usual three MMJ ports, etc. AUI-10-baseT adapter (not the term shown, I still need him) White DEC T + 2 50-ohm thinnet terms NON-DEC SCSI CR-ROM in external box if you want it ---------------------------- Misc: -New DEC 15 foot thinnet + 2 T and 4 terms (this is the white molded cable and connectors) -Grey 5' BNC RGB cable - maybe off the GIGIs and/or from BARCOs -DEC BC09J-03 MV 3100 SCSI cable - This the funky HD68 Female to AMP50 -DEC BCO6P-06 - six foot M-M AMP50 Right Angle SCSI -4-32 MEG (128 megs) SIMMS from an old Jensen box Alpha. 72-PIN 70NS Two are DEC and two are DATARAM -3-button workstation mouse VSXXX-GA (7-pin critter, rectalgular body, not the mickey version) -BA350 storage cab, with term, dual power supplies, two fans + spare, 4 covers--I have the rest someplace -TZ87 in cartridge for BA350 (will test) -Locating my box of internal SCSI CR-ROM drives-any takers when I do? -Gigatrend SL Turbo DAT (DDS1 me thinks) external scsi box --------------------------- 3.5 SCSI drives: (2) RZ28D (wide) (1) RZ28 (1) RZ28B Numerous of 50 pin SCSI ribbon cables 2,3,5 connectors Some Wide also ---------------------------EOF---------------------------

19 years, 7 months

Anyone have a datasheet for a Datel MX-1606?

by ethan.dicks＠gmail.com

>From my googling, I can see that this is a 16-channel CMOS multiplexer. I have 3 here, harvested from a university-built bit of laboratory hardware and I'm wondering if I can put them to use in something. What I lack is a pinout or any detailed specs. Anyone have any in-depth info on the MX-1606? Thanks, -ethan

19 years, 7 months

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