test-drb

test-drb@ccmp.vtda.org

101090 discussions

by aek＠bitsavers.org

I don't think I've seen anything later than 3.2. The 3.2 ref manual was from 1989. http://www.techsoft.de/htbasic/products.htm Still sells it, their part number is 98617R. I suppose if someone were curious enough, they could ask what rev that is.

19 years, 10 months

Not classic, but free: HP-UX

by compoobah＠valleyimplants.com

They don't skimp, either - I was expecting HP-UX 11i base, but they send out the Mission Critical OE. I've got it going for a trial install in the G70. It's clicking along just fine so far. I think when I'm done I'll investigate HP-UX 10.20 for 800s (if I can find it), perhaps a bit faster on the old hardware. Other option would be the base 11i. For now, I'm throwing the kitchen sink at it to see what happens (other than running out of disk space - 4GB (binary) isn't quite enough for everything... Question for the HP 9000/800 people - what is the eqivalent of the VAX "break to console" function (either terminal-break or panel halt+halt)? (or the Sun L1-A) on these old beasts? It takes quite a long time to bring up the PDC console from power-on.

19 years, 10 months

toner transfer circuit board etching

by trag＠io.com

>Date: Sun, 30 Jul 2006 11:13:46 -0700 (PDT) >From: Chris M <chrism3667 at yahoo.com> >by any chance does anyone use this method, and would >be willing to small *even* number of sheets? The one >place I know of that sells it has a $50 minimum order >(Halted). Or maybe someone knows of a place with fewer restrictions. Digi-Key has it for $14.95 for ten sheets,but they have a $25 minimum. However, if you order the GreenTRF at the same time, it should push you pretty close to the $25. For those folks who've had poor results with TT, did you seal the toner with TRF before etching? And did you use a laminator or an iron to transfer the toner image? I'm slowly working my way up to trying this method myself, and am really hoping for better results than I've read about here. But don't expect them, unless I'm doing something different than others who have tried it. The attraction is, that while the circuit board houses just don't get much cheaper than $4 - $5 per board for small boards, the TT can get down to $.50 - $.75 each by my calculations. Of course, if 75% of them must be discarded... Jeff Walther

19 years, 10 months

Very strange Atari Printer

by cclist＠sydex.com

Whilst browing Yahoo! auctions, I came across this Atari 825 printer: http://auctions.yahoo.com/i:Atari%20825%20printer:5025875 Problem is, I can't figure out how it works. Where do you plug it in? :) Cheers, Chuck

19 years, 10 months

HP3000/922

by bbrown＠harpercollege.edu

I just acquired an HP3000/922 (thanks Rob!) Is there anywhere that I can find documentation on the h/w? Is it possible to get MPE install media that would install on this system (in case I want to do a fresh-install)? thanks! -Bob -- bbrown at harpercollege.edu #### #### Bob Brown - KB9LFR Harper Community College ## ## ## Systems Administrator Palatine IL USA #### #### Saved by grace

19 years, 10 months

toner transfer circuit board etching

by trag＠io.com

>Date: Sun, 30 Jul 2006 19:07:00 -0400 >From: Dave McGuire <mcguire at neurotica.com> > >Tim Shoppa wrote: >> For me, far higher yield for double-sided PCB's >> comes from ordering boards over the >> internet. Generally you have to use (gasp!) a modern PC with >> Windows software, but other than that the experience is wonderful. > > GASP...I'm sorry to say this Tim, but this is SO untrue. The >majority of the Internet-based PCB fab houses accept Gerber-format >files...and while you *can* generate those with a legacy Windows PC, I >can't come up with any good reason why someone would want to. I do it >with Solaris on UltraSPARC all the time, for both commercial and hobby >projects. Commercial EDA software for modern platforms is hellatiously >expensive, but even that is unnecessary nowadays. I use two free >packages: gEDA for schematic capture and PCB for circuit board layout. >They also work nicely under MacOS X. I regularly do fine-pitch surface >mount designs with this software. For $200 one can get Osmond PCB for the Mac. It runs on 68K, PPC Classic, and OSX. Until earlier this year it was in beta and available free for testing. I completed two designs while Osmond was in beta which were exported to Gerber and sent out for production. It worked great. I'd do it again, but for my current designs, I just don't want to spend as much per board. Anyway, to avoid digressing too much, the point is, I agree. PCB design can be done affordably on platforms other than a Windows based machine. *Most* (virtually all) PCB fabs expect gerber files, not a proprietary file format generated by their in house software. However, perhaps what Tim meant is that to get some of the great deals available, one goes to the PCB fab which provides in-house software, and to run that software you need a reasonably up to date windows machine. This is certainly true for PCB Express or 4PCB or whatever they're called. Jeff Walther

19 years, 10 months

DEC Alpha equipment in DFW

by alexeyt＠freeshell.org

I'm reposting this with the permission of the author. Please contact cseiler at sdf.lonestar.org directly. === I've got a handful of DEC/Alpha equipment as part of an estate. I need to get rid of it, and I'd hate to see this stuff just get disposed of. I'd like to sell it cheap to an SDFer in the DFW area. Or anyone knows dealers in the area who work with this stuff and might be interested in buying, I'd appreciate a referral in their direction. First up is a DEC Digital VRCX1-WA 21-inch monitor. This is a great monitor. I'd even use it myself, but it's a huge CRT monitor that I just don't have the deskspace for. Manufactured 1997. Bought used in 2002 for $145. Works good. Would like to get $50 for it. Also have Digital Server 3000 50mhz Alpha 128MB. Unknown hard drive. He bought it with 4.5Gb SCSI, but I think he may have upgraded it. I don't know enough about the monitor this thing boots up into, but an Alpha person can contact me if they're interested and tell me how to figure it out, maybe. DEC Alphastation 400 4/233 with 256MB RAM. Have not even started this one up. DEC Personal Workstatioin 433au. Unknown RAM, appears to have no hard drive. HP SureStore DAT24 tape drive. I installed NetBSD on the Digital Server 3000 and got it to work just fine several months ago, but now can't remember how I did it. Need room, and don't have the time to fiddle anymore. The estate needs the money. So, if I could get $45 a piece for the computers and $50.00 for the monitor, I'd be really happy. It would be great if someone could take them all off my hands. I live in Denton, so I could meet someone halfway in Dallas, Ft Worth, or McKinney, etc. Money is not the huge priority, but I'd prefer not to have to ship them as it would involve a lot of boxing up and packaging and whatnot. So I'd rather sell them to someone in driving distance, even if it's for a small amount. The amounts aren't hard and fast, and I'd definitely consider a considerable discount if someone took it all of my hands in one batch.

19 years, 10 months

toner transfer circuit board etching

by wbblair3＠yahoo.com

> Message: 5 > Date: Sun, 30 Jul 2006 11:13:46 -0700 (PDT) > From: Chris M <chrism3667 at yahoo.com> > Subject: toner transfer circuit board etching > To: talk <cctalk at classiccmp.org> > Message-ID: <20060730181346.50833.qmail at web61021.mail.yahoo.com> > Content-Type: text/plain; charset=iso-8859-1 > > by any chance does anyone use this method, and would > be willing to small *even* number of sheets? The one > place I know of that sells it has a $50 minimum order > (Halted). Or maybe someone knows of a place with fewer restrictions. Here's an excellent news group that'll tell you everything you need to know about homebrew PCBs: http://groups.yahoo.com/group/Homebrew_PCBs/ It really is a fantastic resource on this topic because it has so many active members who are experts on the subject and highly experienced. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

19 years, 10 months

imsai 8080 power switch

by dgriffi＠cs.csubak.edu

If I'm reading things right, the Imsai 8080 directly switches AC power through the front panel power switch. Can someone suggest a relay circuit to remove the need to run so much power through the front panel? -- 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?

19 years, 10 months

large data transfert (write) to SDRAM at fixed frequency

by pm.boyer＠wanadoo.fr

Hi ! I am new in electronic. I want to make an analog acquisition board with an ARM microcontroler ( Samsung S3C44B0x 66MHz) with a 8Mbytes SDRAM and an A/D converter( Analog AD775 ). The sampling rate of the A/D converter is at 30Mhz, and i would like to connect its digital output to the S3c44b0x data bus by using the DMA of the uC. Data sent by the ADC will be wrote to the SDRAM by using the DMA of uC. But the number of sampling can be very large, and the acquisition/transfert occur at a fixed rate (30 Mhz). The acquisition time and transfert to SDRAM can be more than 64ms (refresh time cycle of SDRAM). So, my question is : ?is the internal refresh cycle of SDRAM can disturb the data writing by the DMA to the SDRAM ? The ADC send data to the SDRAM through the DMA at a fixed rate during may be 1 or 2 second, and is this process can be stopped/disturbed by the internal refresh process of SDRAM ? If yes, is there a solution, to manage the two process ( fixed acquisition and SDRAM refresh cycle) ? Thank you very much. -- ------------------------------ M. BOYER Pierre-Marie Hameau de Biranques 34380 Notre Dame de Londres Tel : 04.67.55.09.17 ------------------------------

19 years, 10 months

large data transfert (write) to SDRAM at fixed frequency

by ajp166＠bellatlantic.net

> >Subject: Re: large data transfert (write) to SDRAM at fixed frequency > From: Pierre-Marie BOYER <pm.boyer at wanadoo.fr> > Date: Mon, 31 Jul 2006 14:45:27 +0200 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >Le Dimanche 30 Juillet 2006 18:19, jim stephens a ?crit?: >> Pierre-Marie BOYER wrote: >> >> >Hi ! >> > >> >The ADC send data to the SDRAM through the DMA at a fixed rate during >> >may be 1 or 2 second, and is this process >> >can be stopped/disturbed by the internal refresh process of SDRAM ? >> > >> >If yes, is there a solution, to manage the two process ( fixed >> >acquisition and SDRAM refresh cycle) ? >> > >> >Thank you very much. >> > >> > >> > >> If you are only collecting ADC data at that rate, can you use an I/O mapped >> device instead of DMA, and just poll and read the data? Or are you saying >> that the ADC data will start up and run at some rate approaching the memory >> cycle time for 1 to 2 seconds? >> > No, ADC data run at a fixed frequency (30 MHz) during several seconds, >so data, from the ADC, must be writen to the sdram at rate one byte every 0,03 usec, >during several seconds. >( ADC hasn't buffer). >But what happend when the SDRAM enter in its refresh cycle, which occurs every 64ms ? > >Tanks > >P.M.B. > Maybe this will help... Refresh is the periodic reading of all rows of a Dram. If you were to do a bulk write and the number of bytes written exceed the number of rows in the DRAM then refresh or not you will have refreshed the ram. Nominally refresh is handled in two ways bulk, doing all the rows in one long pass every so many mS as required by the devices. The better and more common technique is to interleave refresh in between accesses such that you will have accomplished refresh of all rows in the required time. My, $.02 is if your running an ADC at 30mhz and the system has SDRAM you still only using a fraction of the bandwidth and refresh is not an issue. Since your writing nearly (30mhz*2sec-60Mbytes) 60mbytes of data you will refresh the ram nearly 31.25 times in two seconds, likely more than enough to satisfy refresh. Allison

19 years, 10 months

Very strange Atari Printer

by bpope＠wordstock.com

> Whilst browing Yahoo! auctions, I came across this Atari 825 printer: > > http://auctions.yahoo.com/i:Atari%20825%20printer:5025875 > > Problem is, I can't figure out how it works. Where do you plug it in? > > :) Well, it does have gold umm... connectors so that has to be good! Cheers, Bryan

19 years, 10 months

Software needed for Nicolet FTIR

by dj.taylor＠starpower.net

Like the majority of you who participate here I love to tinker with old stuff. I have managed to buy a used Nicolet model 210 FTIR system complete with PCI interface card and cable. These instruments fascinate me because they depend on a combination of computers, electronics, optics, lasers and precision mechanical movement to perform their function. When I got it home it didn't work because the laser power supply was not getting the 12V needed to power it up, when I corrected that and plugged it back in the instrument went into a 'maintenance' type of mode with the moving mirror scanning in a free run mode. The internal infrared source appeared to be working also since it put out a soft orange glow. This instrument and the software for it are not supported by Nicolet - now Thermo Electron - because it is so old. It is from 1993, and I am looking for someone who has the G-Series bench driver and OMNIC version 6.0 or below. I'm asking the classicmp group for help since I think someone out there might help me along. When I spoke to the Nicolet rep he told me that he also had a machine at home [what a hobby!] so he could identify with me, however my machine was retired and I needed to get an old version of Omnic and the g-series bench driver, and it would have to run on Windows 98 or earlier, but Nicolet wouldn't sell it to me. So, if anyone out there knows of some laboratory/chemistry type who may have old versions of OMNIC laying around and no longer need them have them get in touch with me. Thanks Doug

19 years, 10 months

Mac 128K board

by wdonzelli＠gmail.com

Anyone here have a working Mac 128K motherboard available? I have an old machine here with some strange memory problems that I really do not want to invest any more time into. -- Will

19 years, 10 months

transcribing old docs

by dgriffi＠cs.csubak.edu

I'm transcribing the docs for a Radio Shack PT-210 printing terminal because I don't see it online anywhere and I just recently acquired a photocopy. This manual has a fair number of typos and a peculiar capitalization scheme which is typical of writing from the 1700s. Here's an example: [begin quote] If you set the PT-210 to Half Duplex and the Host is echoing the character, you will see two of each character on the Paper -- one character will be from the PT-210 and the other echoed from the Host. [end quote] So, is it a Good Idea to correct stuff like this? Should I be concerned about maintaining the page numbering? -- 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?

19 years, 10 months

RGB & LCD...

by brad＠heeltoe.com

(sounds like a stevie wonder song, "r-g-b...and l-c-d..." (ugg, clearly I've had too much coffee). I have an old computer from the '80s and it has a frame buffer with RGB+S (sync) output on classic BNC connectors. Back in the day I'd go find a suitable (unbearably heavy) RGB monitor and 4 coax cables and connect the two. But I find myself without any RBG monitors these days. But I do have a bunch of new-ish LCD monitors which seem quite happy to sync up to pretty much anything. So, can I just (somehow) connect the RBG+S signals to a mondern LCD? Has anyone tried this? I haven't even thought about it electrically so this may be thinking out loud. Most of these lcd monitors seem to have VGA signals. I did once have a DW13 to RBG/BNC connector. And I think I have a DW13 to VGA adapter... Is that the right way to go? I don't know anything about the frame buffer in this thing. I suspect it's some sort of 640x480x8 device. I can do some digging. (it's a Symbolics 3630 lisp machine in case you are wondering, a so called "g-machine", where they put the original 3600 into a small number of FPGAs). Any advise appreciated... -brad

19 years, 10 months

HP 9000 Pascal 3.2 : HFS on HP9133L

by aek＠bitsavers.org

> You refer to sending all of your HP docs to Al for scanning. I don't > know who Al is; please can you provide the link to his site. That would be me. I've been completely consumed for the past three months putting the Computer History Museum's software collection together. What I have pdf'ed is at bitsavers.org/pdf/hp/ I need to get this stuff back to Joe ASAP.

19 years, 10 months

TI 990 with disks, manuals, software

by aek＠bitsavers.org

> Is there any interest in a TI 990 system complete I'd like to, but it's too far away. Keys should probably get it for the museum in Houston.

19 years, 10 months

HP 9000 Pascal 3.2 : HFS on HP9133L

by walkerpa＠ihug.co.nz

Hi Joe, First of all, I am enjoying the discussions coming from cctech. It's encouraging to know that there are others out there with the collecting and preserving attitude. In answer to Bernd Kopriva's comments: >Another issue : is it possible to boot from the floppy within the 9133 ? I can only boot from another >9122 that is connected, but not with the 9133 build in drive, later it's possible to use it normally My understanding is that with bootrom 3, or later, it should be possible to boot from any HP-IB attached storage device. That's probably provided the system booted then provides support for additional drive types which can be loaded as required. This is the situation with Basic 3.0, and later, where the system file SYSTEM_BA3 doesn't know about Amigo or CS80 devices, but the necessary BIN files can be loaded immediately after booting (by the bootrom). Pascal has to have the support available, but should boot I think. Your comment about checking the disk format is also very valid. It took me a while to realise that the floppy in my 9153C drive was HD floppy compatible! That's after having it in storage for many years. I am getting back into this stuff which is where I started all those years ago. Two questions: 1. You refer to sending all of your HP docs to Al for scanning. I don't know who Al is; please can you provide the link to his site. 2. Did you find your pascal install version? I have version 2.0 and 3.0. Unfortunately, I've lost the 'IO' file from the 3.0 version (disk read error), which leaves me unable to compile. So I'm looking for that. Did I have a backup? No. Have I learnt a lesson??????? Have I now made copies of the other disks (640k format)? Regards, Peter -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.10.5/403 - Release Date: 28-07-2006

19 years, 10 months

Early RAID history; circa 1987

by Steve＠OceanRobots.net

Hi, I'm researching early RAID, circa 1987. Interested in applications beyond RAID 0. Have heard that Polymorphic Systems had RAID boxes; perhaps model 88XX or similar? Any information is appreciated. Steve

19 years, 10 months

HP 9000 G70

by compoobah＠valleyimplants.com

>BTW, the text is supposed to get displayed on the 25th line >(the "status line"). If you don't have an HP compatible terminal, >or emulator, you can get a free one for Windows at Aha! that explains all the garbage characters and why it doesn't seem to put in <CR> when I'm in CM. Currently running on a WY-150+. Seems to work O.K. once it's bootstrapped. Guess I'll keep my eye out for a HP 700 terminal (or maybe not, I have the Wyse doubling for my VAX). Perhaps I'll try the HP emulator (if it runs under WINE) first to see if it's "worth it" to have a HP terminal.

19 years, 10 months

Double emails

by paul0926＠comcast.net

Is anyone else receiving double emails? I'm not sure when it started, but I get two of everything now. Paul

19 years, 10 months

Classic computers sighting (article)

by tpeters＠mixcom.com

Classic computers sighting: on the TechRepublic web site: http://nl.com.com/view_online_newsletter.jsp?list_id=e101 Dinosaur sightings: Vintage computers from the 50s, 60s, 70s, and 80s Whether it was a Honeywell 400, Altair 8800, Timex Sinclair, Radio Shack TRS-80, or Commodore 64, IT pros usually remember their first computer. But nothing lasts forever. State-of-the-art hardware eventually becomes obsolete and fades into computer history. The following galleries contain photos of the outdated computers that fill museums, supply closets, storage lockers, and techie basements everywhere. See the machines that defined the information age and the hardware that made them run. Featured galleries Inside the first personal computer: Kenbak-1 The Kenbak-1 is considered by many to be the world's first "Personal Computer." Erik Klein, vintage computer collector and Webmaster of Vintage-Computer.com, takes you inside his Kenbak-1. Inside the Altair 8800 vintage computer If not the first home computer, Ed Roberts' Altair 8800 was definitely the first successful one. Watch as Erik Klein, vintage computer collector and Webmaster of Vintage-Computer.com, restores one of these classic machines. Dinosaur Sightings: Computers from 1980-1983 The 1980s was a decade when cool cops patrolled the streets of Miami and Reaganomics drove US fiscal policy. It was also the decade when PCs went mainstream. This gallery showcases several 1980-1983 machines from Steven Stengel's vintage computer collection. Dinosaur Sightings: Computers from 1984-1989 As the year of George Orwell's totalitarian future passed us by, PC technology took tremendous steps forward-including the first GUI. This gallery showcases several 1984-1989 machines from Steven Stengel's collection. Dinosaur Sightings: Computers from the 1970s During the disco days of the 1970s, personal computers moved out of the electronic hobbyist's garage or basement and into the office, classroom, and family den. This gallery showcases several 1970-era machines from Steven Stengel's vintage computer collection. Inside the Commodore Pet 2001 vintage computer The Commodore PET 2001 was the first fully integrated computer from Commodore. Erik Klein, vintage computer collector and Webmaster of Vintage-Computer.com, shows you the hardware that makes the Commodore PET 2001 run. Dinosaur sightings: Old-school computer hardware As giant lizards once roamed our planet, so did mammoth machines once balance our checkbooks. From ENIAC to RadioShack's TRS-80, this gallery contains photos of the outdated computer hardware. Dinosaur Sightings 2 From a Honeywell 400 to an Atari 800, TechRepublic members share their favorite photos of old-school computer equipment is this second edition of our Dinosaur Sightings photo gallery. Dinosaur Sightings 3 From an IBM 5251 Display Station to a Commodore SX-64, TechRepublic members share 16 new photos of old-school computer equipment in this third edition of our Dinosaur Sightings photo gallery. Dinosaur Sightings: SPARCstation Collection Take a walk down Sun's memory lane, with John Dunn's collection of 17 different SPARCstation machines. More galleries More creative uses for dead computer equipment IT departments and end users often donate, recycle, or trash obsolete computer equipment. But more often than ever before, individuals are using dead computer hardware in creative and interesting ways. Worst tech in Q2 2006 Like with a bad movie that achieves cult status because it's just that bad, we love to hate something about these unlucky 13 products and downloadable duds from the past three months. A trip down HP's memory lane In 1960, when Hewlett-Packard built offices, the facility was state of the art and evoked the new frontier. Now, it's a nostalgic reminder of a time when people smoked in their offices and nearly every available surface was covered with simulated wood paneling. [Commentary] Good judgement comes from experience. Experience comes >from bad judgement. --... ...-- -.. . -. ----. --.- --.- -... tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio) "HEY YOU" (loud shouting) WEB ADDRESS http//www.mixweb.com/tpeters 43? 7' 17.2" N by 88? 6' 28.9" W, Elevation 815', Grid Square EN53wc WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531

19 years, 10 months

toner transfer circuit board etching

by chrism3667＠yahoo.com

what if you drill your holes first? Would that at all alleviate the problems experienced with a double sided etch? I figure I could lay out a copy of the artwork, dimple each hole with an awl or whatever, then drill , which will hopefully facilitate accurate placement of the transfer sheets. Farming out is likely to be expensive I guess on a very small quantity. The board is about 7.5 inches square (Radio Electronics 80188 robot brain). __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

19 years, 10 months

11i on NOVA hardware

by compoobah＠valleyimplants.com

Good news is in- HP-UX 11i v1 (Sept 2005 version, the one that currently ships) will run on NOVA class PA-RISC hardware (9000/887 G70). Do yourself a favor and don't try to install using the factory shipped (2x) CD-ROM, though. You need to do the manual install, and you need huge quantities of disk space (I had to trim the default install to fit it on 4GB). Speed is acceptable with dual CPUs and 768 MB RAM, don't know what it would be like on other systems.

19 years, 10 months

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