test-drb

test-drb@ccmp.vtda.org

101090 discussions

by lynchaj＠yahoo.com

Hi, I am preparing to get some S-100 6502 CPU board PCBs manufactured for the N8VEM and S100computers.com builders. These are CPU bus master only (no TMI circuitry) and include provisions for a 4K boot ROM. There is no onboard SRAM or other IO. The board includes a large prototyping area for builder customization. Assuming we can get 20 solid board builder commitments, I will place a PCB manufacturing order in the next few weeks. Please contact me by email if you are interested in participating. This is a hobbyist board built by hobbyists for hobbyists. The PCBs will be $20 each plus $3 shipping in the US and $6 elsewhere. http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=S-100%206502%2… http://www.youtube.com/watch?v=tgFUeJdO7-E Thanks and have a nice day! Andrew Lynch

14 years, 6 months

APC 6808 EXORBUS board docs?

by chrise＠pobox.com

I'm looking for any documentation that might be around for APC Automation Products Company Microprocessor, PCB ASSY 0002-3768-151 which is a Motorola EXORBUS CPU board with the following goodies on it, 6808 CPU (w/ 4.000 MHz xtal) (2) 6821 PIA (4) 2716 EPROM M58725 2Kx8 SRAM 6840 timer 6850 ACIA there's a bipolar PROM too which is probably used as an address decoder of some sort. These appear to have been offered as an OEM product for integration into customer's designs rather than being some custom board for a specific purpose. Most parts are dated '83, '84. I have several of them. Any info about jumpers, address decoding or certainly schematics would be greatly appreciated! Chris -- Chris Elmquist

14 years, 6 months

VCFMW6 Leftover Shirts

by silent700＠gmail.com

Now that we've all recovered from Turkey Coma and are thinking about the next holiday(s) to come, perhaps the geek in your life (that's ok if that's you) would like a rare, soon-to-be-collectable, highly fashionable souvenir T-shirt from the bygone Vintage Computer Festival Midwest 6! Here's the current list of sizes still available and links to some pics (should be updated fairly regularly:) http://chiclassiccomp.org/vcfshirts.html Shirts are $15 including shipping within the continental US. Contact me for international rates. Thanks and we hope to see you in person next year!

14 years, 6 months

4000 Series CMOS Parts?

by michael.99.thompson＠gmail.com

A friend said that he has a collection of NOS 4000 series CMOS ICs. If there is any interest I will get them so they don't go in the trash. -- Michael Thompson

14 years, 6 months

Surviving Pong cabinets - UK?

by jules.richardson99＠gmail.com

Query which got bounced via the NMoC mailing list - some journalist is looking for somewhere to play on a Pong cab in the UK. Does anyone keep tabs on surviving examples? I don't remember ever seeing one there over the years, but it's hard to believe that there are none left. The message just said cabinet; I'm assuming they're after an upright, but maybe the cocktail version would be acceptable too. Perhaps even a faithful replica of either would do the job as well. cheers Jules

14 years, 6 months

Phone # for Joe Rigdon?

by eric＠brouhaha.com

Does anyone happen to have Joe Rigdon's phone number? I used to have it, but can't find it now.

14 years, 6 months

Looks like a home brew PDP 111 here ... Soviet chips need not apply

by bfranchuk＠jetnet.ab.ca

http://porkrind.org/missives/the-core-memory-module-from-my-dads-homebuilt-…

14 years, 6 months

CMD CQD-220TM problems

by fraveydank＠gmail.com

Here's a quandary that I've posted a few places, with varying success. I have a CMD CQD-220TM SCSI board (QBUS MSCP SCSI, drive and tape) which was working fine when I got it. It's now only partially functional with a few odd symptoms on my 11/23+. The basic problem is that the CPU (it's actually an embedded 8086 system) seems unstable, but in a somewhat deterministic way. I can have it copy the PDP-11 online utility into RAM and execute that, and I can perform a few operations on that before it bugs out (basically the CSR stops responding to requests and the utility hangs waiting for a confirmation code). The most interesting is when I try to run the "other utilities"; it starts up, but then crashes when trying to display the serial number. I should also mention that the UART doesn't seem to work, and I've tried both wirings (NULL modem and non) with no success. It's wired up like a standard DEC serial port (the header on the board has the same Rx/Tx and GND pins, which are all that are connected in my adaptors), so I just attached one of my adaptors to it. Here's the really interesting bit. After running over both the PDP and the 8086 side for a while with IDA Pro (which has been a lifesaver on many projects), it looks like the "other utilities" section actually talks directly to the 8086; the software on the board redirects the character output to one of the CSRs and the PDP and the 8086 converse that way. You get the same output as the UART. This is only true for the "other utilities" section, though; the rest of it executes natively on the PDP. Has anyone experienced this sort of problem with this (or a similar) card? I'm not really keen on building up a trace module to figure out what the 8086 is doing (though I have a few FPGA eval boards which would work just fine if I use SignalTap; I just don't want to go through the trouble of building it if the answer is simple). I'm honestly puzzled by this; it was working fine when I got it, and then I plugged it in after a move and no dice. I'm still banging on it with IDA pro. I hope it's not a busted PAL/GAL/PLA (of which there are about 20 on the board), because for the most part there's no way of redoing any of those without spending weeks on the assembly trying to figure out what they're supposed to do. The SCSI chip (a 53C90A) is a socketed PLCC, and they're not impossible to find second-hand, so if it turns out to be a problem there, I should be able to fix that by just throwing some money at it. - Dave

14 years, 6 months

Anyone have a Hobby Board for sale (4" x 4.5" , 44 contacts, 1.56 on center contacts) wire wrap prototype board

by nick.allen＠comcast.net

14 years, 6 months

Canon VP-3000 most FAQ plus other important information

by chrism3667＠yahoo.com

I have opened up my Canon VP-3000. It has an 8088. I need docs and warez. I have a boxed up set of docs for the AT & T 7300 UNIX PC. I don't want them. They're free for shippage. Let me know.

14 years, 6 months

Seattle Retro-Computing Society: last 2011 meeting Sat. Nov. 26th

by searetcompsoc＠gmail.com

Many thanks to whomever unclogged the backlog that, until recently, kept me from accessing cctalk or cctech. Now I can post these announcements myself! And there was much rejoicing, etc. -------- Come one, come all, to the Seattle Retro-Computing Society's monthly meeting, on Saturday, November 26th, 2011! You don't want to miss this one -- it's our last meeting until January 2012. Do you do any of the following with old computers near Seattle? + Use, collect, and/or restore them + Play games on them + Write programs for them + Develop new hardware for them + Help other people do any of the above If your answer was "yes," as I expect it will be if you're reading this near Seattle, then the SRCS is for you! We exist so you can show off your awesome stuff, bounce ideas off of fellow enthusiasts, and be inspired by one another's achievements, plans and aspirations. No idea is too big or too small, and we're not picky about what flavor of vintage machine you prefer! Come on down and tell us about it! Please note that, as it would fall on Christmas Eve and no one would attend, we will not be meeting in December. If you miss this meeting, you won't get to see everyone (and their nifty stuff) again until January. The meetings are graciously hosted by the Living Computer Museum, which is gradually fitting out a computer museum in Seattle's SODO neighborhood. There will be refreshments, a Buy-Sell-Free-Trade table, and enough table space & power to set up anything you may want to show off! For further details, please see our web page at http://www.seattleretrocomputing.com/ and our mailing list at http://groups.google.com/group/seattle-retrocomp . Hope to see you there! Gordon "gsteemso" Steemson SRCS agitator-in-chief -- The Seattle Retro-Computing Society http://www.seattleretrocomputing.com/

14 years, 6 months

Anyone with Cipher F880 experience?

by fraveydank＠gmail.com

I have a DEC TS05 (re-badged F880 without high-density mode; otherwise same PCB and everything) which is poorly behaved. Before I go diving in with the maintenance manual, is there anyone on here with experience repairing F880s? Symptoms: - It occasionally just resets (especially once it gets warmer). I'm willing to bet this is a flaky regulator somewhere, but I don't have a digital scope to see the transients very well. - When loading (and occasionally during operation, if it ever gets that far), it bugs out with either a compliance arm or tachometer error. Both of the superficial diagnostics for the compliance arm and the tachometer indicate no problems, so I'm assuming it's a problem somewhere in the logic. It only successfully loads maybe one time out of 20, even when I load it pre-threaded (1 out of 3 when it's cold, but it doesn't stay that way for long), which makes the first problem all the more irritating. - Dave

14 years, 6 months

SUN/HP/DEC Equipment for pickup in Slovenia

by janprunk＠gmail.com

Disolving my collection of old computer stuff. Only for personal pickup in Ljubljana, Slovenia. If you want the computer badly, the shipping wont be less than 40 EUR/piece inside Europe, for USA or Asia shipping, you better forget it ! Stuff must be picked up latest until the new year. I accept any reasonable offers above 20 eur/computer to my E-mail address. The equipment consist of 1 x Hewlett Packard 9000 E35 2 x SUN Sparcstation 4 1 x Digital DEC 2000 Alpha 3 x Hewlett Packard Appollo 9000 712/60 1 x Hewlett Packard PC 9000 PC-308 (XT) 1 x Digital DEC 3000 1 x Power Macintosh 7500/100 Please for any queries contact me directly to my E-mail address janprunk at gmail.com I don't follow the mailing list. Regards, Jan

14 years, 6 months

o_O

by stephane.tsacas＠gmail.com

I don't know what to think about this http://www.pixiv.net/member_illust.php?mode=medium&illust_id=16362209 -- Stephane FreeDonne <http://www.freedonne.org> Join FreeDonne - Rejoignez FreeDonne.

14 years, 6 months

TeX - Knuth - Software quality - Re: Bug-Free Software, was: Re: on FPGA simulation

by mcguire＠neurotica.com

...especially coming from people so far removed from them that they have no information to draw on but their own assumptions. Homework is done in Word. Papers are done in LaTeX. -Dave William Donzelli <wdonzelli at gmail.com> wrote: >> While its true that WYSIWYG has replaced markup for most academic >> publishing, TeX (or more properly the macro packages on top of TeX) >> are still superior in the area where it was created: typesetting >> mathematics. > >Yes, and that is what, 1% of all academic publications? Maybe 0.1%, >for stuff that Word can not handle? > >"Standard" is a funny word. > >-- >Will

14 years, 6 months

information disappearing, was Re: HP classic computer site "Computer Asylum"-- gone dark?

by mcguire＠neurotica.com

8-) Cameron Kaiser <spectre at floodgap.com> wrote: >> > Dave, what did you settle on? >> >> DSpace from MIT. > >And here I was hoping for WAIS' triumphant return. :) > >-- >------------------------------------ personal: http://www.cameronkaiser.com/ -- > Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com >-- "Another day, another dangling modifier" -----------------------------------

14 years, 6 months

TeX - Knuth - Software quality - Re: Bug-Free Software, was: Re: on FPGA simulation

by mcguire＠neurotica.com

Got any data to back that up? Been to any universities lately? Read many research papers? I do all the time, and most are done in LaTeX. Like it or not. -Dave William Donzelli <wdonzelli at gmail.com> wrote: >>> these don't seem to have impaired their reliability, >>> performance, or sheer longevity: Being the 30-year de facto standard in >>> academic publishing. > >TeX is, well, sort of the "de facto standard". For the past ten years, >Word has done all the heavy lifting in academics, like it or not. > >-- >Will

14 years, 6 months

HP classic computer site "Computer Asylum"-- gone dark?

by hp-fix＠xs4all.nl

> > A while back, when I was restoring my HP 9825B, I found a great site with lots > of beautiful pictures of HP classic computers in various states of disassembly. I > believe it was called "Computer Asylum" at www.bohemiae.com. Now the site > seems to have disappeared. Did it get relocated, or hidden intentionally by the > "warden" of the asylum, or is the site just gone? It would be a shame if so. Did > anybody happen to archive some of those images and pages? > > > > Thanks for any info, > > > > Dave > > I found remnants of the website (last crawled on July 8th) at > http://www.archive.org/web/web.php - not sure what happened to it, though, > there also did not seem to be any reference to computer asylum in the pages > that are archived there. It's related to the UK firm Bohemiae house owned by Jiri Picka The site can be found at : http://www.computerasylum.co.uk/ The company site which also leads to the asylum : http://www.bohemiahouse.co.uk/index.html -Rik

14 years, 6 months

Xeltek algorithm generator?

by fraveydank＠gmail.com

Someone mentioned something about a Xeltek algorithm generator a while back. Any idea how that one works? The NMC9306 algorithm seems to be non-functional even for a tube of 9306s that seem to work fine in their target device (the aforementioned CQD-220). Looking at it in a hex editor, the algorithms appear to be PE (either executables or libraries), and IDA brings them in OK, but I'm not in the mood to reverse engineer more 8086 code to fix this stupid ROM burner. Worst case, maybe I'll build a quick and dirty 9306 communicator on my DE1. :-) I already have a perfectly functional UART peek/poke unit. - Dave

14 years, 6 months

(OT) SmartMedia un-erasing - help?

by mtapley＠swri.edu

Joe P., thanks for the pointer to digital image recovery! I'll find a Windows machine and try it if I can't work the problem with my Mac. ----- John F, DigitalForensics will also get a shot when/if I start seeing bits of files recovered. That's not looking so likely, though. ----- At 19:31 -0600 11/17/11, Ian wrote: >Not that I've ever accidentally deleted files from a camera card. No. Never. You have my sympathy and thanks! What was on my card would have been all .jpg compressed images, so Photorec looks perfect. ------ At 19:31 -0600 11/17/11, Ian and Mouse pretty much chorused: >You need to specify the device itself, not the mountpoint. Type >mount to get a list of all the devices that are currently mounted, >and see which one corresponds to the /Volumes/Untitled mountpoint. >Unmount it from the command line, then use dd to copy it to a file. Ah! mtapley-3:~ mtapley$ mount ... /dev/disk1s1 on /Volumes/Untitled (local, nodev, nosuid) mtapley-3:~ mtapley$ su root ... mtapley-3:/Users/mtapley root# umount /dev/disk1s1 mtapley-3:/Users/mtapley root# dd if=/dev/disk1s1 of=PhotosToSort/LostCard/ddClone128M.dd conv=noerror,sync 255953+0 records in 255953+0 records out 131047936 bytes transferred in 153.810460 secs (852009 bytes/sec) The naive shortcut to /Volumes just got me a symlink or something? I'm embarrassed to admit I had to hit more man pages to remember that unmount is spelled umount. Anyway the dd command chugged for several minutes.... ...at the end of which, I got another image which was composed almost entirely of "FF" pairs, according to OxED. Near the start, there is, as in the other images, "FAT16", some stuff that says "DCIM" and "Trashes", "100OLYMP", a "Mac OS X" string, a "This resource fork intentionally left blank " string, and a few other short (10's of bytes) bits of stuff in mostly 00 areas. After that, just an ocean of FF pairs. Not surprisingly, Photorec finds nothing. Likewise for Exif-U. 0 files saved in /Users/mtapley/Applications/testdisk-6.13/recup_dir directory. Recovery completed. Although I'm willing to go on and try other tools if people want, I've become a tad discouraged at this point. Am I right to be so? It looks to me like the camera re-initialized the card and wrote all FF, ready to be recorded on, and if Mouse is correct that's pretty much that. Even for the cool Yellowstone photos, I'm not willing to pay for an AFM image of the flash memory. Cheaper to round up the family and go back to Yellowstone. Any further suggestions? Expecting none, I still want to offer most heartfelt thanks to everyone for their pointers and tips. If *this* group can't help me, it's a testament to how well and truly I managed to screw myself. -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

14 years, 6 months

Intel MDS units

by wmachacek＠q.com

I just picked up a couple of Intel MDS units last week and now I'm not quite sure what to do with them. I have an MDS-225 with an MDS-230 keyboard. The unit is dated 7/80. I also have an MDS-120 with an MDS-120 keyboard. This unit also includes an ICE 86A BB Intellec module which is attached. I have no documentation to go with these items and as far as I can tell, they were taken out of operation many years ago and just stored. I have no way of verifying if they are working or not. Is there a market for these units? They are pretty heavy. I can strip them myself if need be, but if there is someone who can put these to good use, I'd rather see them go there. Any ideas, thoughts will be appreciated. Bill Machacek Colo. Springs, CO

14 years, 6 months

DEC and PDP links "Gordon Bell's Publications"

by vintagecoder＠aol.com

I guess everybody already knows about this: http://research.microsoft.com/en-us/um/people/gbell/Digital/DECMuseum.htm Since I haven't used or seen DEC gear since the 1970s I found many things of interest on the page, specifically "Digital at Work" in PDF. Unfortunately many of the pictures are almost illegible. Still a good read. -- +------------------------------------------------------------------------+ | Vintage Coder America Online ivagntrpbqre at nby.pbz <ROT13> | | | | Collecting: DOS assemblers, compilers, & books (Z80, M68K, 6502, 808X) | | Software & doc for IBM S/360 through OS/390 | | | | Wants: Ada 95 compilers for MVS/ESA & Solaris SPARC | | PL/I X Optimizing Compiler for MVS, APL/SV for MVS | | Stony Brook Modula-2 for Solaris SPARC | |---------------------------------------+--------------------------------| | Powered by Slackware 64 Intel and Solaris 10 SPARC | |=======================================+================================| | PGP Key 4096R 0x1CB84BEFC73ACB32 Encrypted email preferred | | PGP Fingerprint 5C1C 3AEB A7B2 E6F7 34A0 2870 1CB8 4BEF C73A CB32 | +------------------------------------------------------------------------+

14 years, 6 months

HP classic computer site "Computer Asylum"-- gone dark?

by dfnr2＠yahoo.com

A while back, when I was restoring my HP 9825B, I found a great site with lots of beautiful pictures of HP classic computers in various states of disassembly.? I believe it was called "Computer Asylum" at www.bohemiae.com.? Now the site seems to have disappeared.? Did it get relocated, or hidden intentionally by the "warden" of the asylum, or is the site just gone?? It would be a shame if so.? Did anybody happen to archive some of those images and pages? Thanks for any info, Dave

14 years, 6 months

VAX "mainframe" available?

by stephane.tsacas＠gmail.com

http://thedailyreview.com/news/gop-candidates-for-county-office-speak-in-to… -- Stephane FreeDonne <http://www.freedonne.org> Join FreeDonne - Rejoignez FreeDonne.

14 years, 6 months

(OT) SmartMedia un-erasing - help?

by mtapley＠swri.edu

At 12:00 -0600 11/17/11, David R. wrote: >I guess it's possible... does SmartMedia format as FAT[12|16|32]? Questions that prompted some more research. Disk Utility (see below) thinks MS-DOS File System (FAT16). >Probably a good idea to make a backup image of the card before you >do any experiments, though. If you have access to a UNIX-y machine >that can access the card, dd should do the job. I don't know what >to use on Windows. (Thanks also to Liam and Ian, both also suggesting the same thing.) My normal process was to read the card using a SmartMedia to PCMCIA adapter on a PowerBook G4. Stage 1 of the disaster happened when I got impatient as OS X.4's driver was re-writing the directory, and manually ejected the PCMCIA adapter. At that point, the SmartMedia became un-mountable either on the camera or on the Mac/adapter. Stage 2 happened when I asked the camera to use its little hammer-icon process on the card, hoping that would allow me to edit - no such luck. It reformatted. I did make a .dmg clone of the SmartMedia after re-formatting it, using a freeware called "Exif Untrasher". There are some odd things about that (like, parts of very very old images still left on the card, and images that I'm surprised were ever on that card). Also, the 128MB card was mostly full, but the Exif-U .dmg is only 62.5 MB. I'm thinking maybe I copied the wrong card? Just now, I repeated that process and came up with a 125 MB file (more what I expected). I also made a copy using DiskUtility, also 125 MB. What's the correct incantation for a dd command under OS X.4 Tiger? The naive dd if=/Volumes/Untitled/ of=clone128M.bin conv=noerror gets only 8k bytes. On the resulting files, Exif Untrasher finds nothing. That makes some sense, as examining the files (both the Exif-U generated and the Disk Utility generated) shows mostly 00's, with the occasional block of FF, and a few random things at the start like "DOS FAT 16" and "this resource fork intentionally left blank" (probably written when I put the card into my OS9 Powerbook 3400's PC slot). I think the camera's format was a real "format" format, ie rewrote all the flash memory to 0. I'm hoping for something that will read residual charge left in the flash even after a format/reset ... and hoping the bill for that isn't something that only a three-letter agency would be interested in. -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

14 years, 6 months

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb