test-drb

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101090 discussions

Macintosh IIsi and Performa in original boxes FREE (Chicago, IL)

by sellam＠vintagetech.com

A nice lady named Ann has a Macintosh IIsi and Performa (don't know what model) with all manuals, original system disks, and original boxes free for the taking in Chicago, Illinois. You can probably even convince her to ship it if you're willing to pay for the privelege. > > I have some old Mac computer equipment (IIsi and Performa) and all the > > original sofware, boxes and manuals from that era. Also, Adobe > > magazines from the early 1990's. I have an organized pile but now it's > > time to move the stuff to someone who needs certain items for their > > collectibles or send them to be recycled. The Performa isn't terribly exciting. The IIsi is just old enough now to start being interesting as a collectable. I just worked a fairly involved project that required nearly every Mac II model (hence all the recent requests) and am now more familiar with them and thus appreciate them more. The IIsi was the penultimate model of the II series (the IIvx and IIvi came last). If interested, please contact me and I will forward to you the contact information for Ann. -- 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 ]

17 years, 9 months

GA Zebra Computers

by w.reses＠yahoo.com

Jay, ? I recently saw your 2007 post about your GA collection. I have a GA 1750 with 1MB of memory, a 60MB Archive tape, 18 ports, and a Maxtor XT-2190 140MB hard drive. I am running GA Pick O/S version 3.8T1 (the latest). I also have the dealer.assy account and the sysgen acount. ? I have written lots of assembly code for multiple Pick platforms. I specialize in on-line, retail point of sale transaction processing which can be done with a combination of Basic, Pick assembler and InfoLinke (or on the PC - Mainlink.II) interfaces. ? I am also interested in obtaining an A200 or related R91 machine. If any of these things are of interest to you, please write me back. Thank you, Wayne

17 years, 9 months

Free Amiga 2000 in Middle Island, NY

by tosteve＠yahoo.com

Contact Eugene below, not me - this is not my system. -------------------------------------------------- Name: Eugene DiFabio - Damescena at aol.com Where: Middle Island, NY Hi - I am looking to give away my Amiga 2000 and accessories. I have the computer, monitor, mouse, and a printer, and the complete maintenance schematics for this computer. I also have a stack of Amiga World magazines from about the year 1988- early 1990's or so. Thanks. Damescena at aol.com

17 years, 9 months

Clearing BIOS Passwords - Was - What is a safe way to clean corrosion?

by doug＠stillhq.com

Mark I had a Digital laptop a couple of years ago that somebody gave me that has a BIOS password. The configuration data including password was stored in a 24C01 8 pin NV memory chip. I searched for a solution without success, and eventually did the following. 1. With a 12" (30CM) lead, tie the serial data line of the memory chip to ground, pass the cable out of the computer case as a loop, and re-assemble the case. 2. Power on the device - Gosh - The machine believes that the memory chip is full of zeroes, so the configuration is invalid. 3. Access the setup utility. 4. Using sidecutters, open the link from the data line to ground (thats why I used 12" of wire). 5. Make the required configuration changes and save a new default password. Nothing beats a brute force hardware solution when the vendor wants you to use a convoluted USB key or "link the secret pads" solution..... Hope that this is helpful. -- Doug Jackson, I-RAP, MAIPM, MIEEE Principal Information Security Consultant EWA-AUSTRALIA PO Box 6308 O'Connor ACT 2602 Level 1, 214 Northbourne Ave, Braddon ACT 2612 Tel: +61 (0)2 6230 6833 Fax: +61 (0)2 6230 5833 Mob: +61 (0)414 986 878 http://www.ewa-australia.com ============================================ IMPORTANT: This email remains the property of Electronic Warfare Associates - Australia. If you have received this email in error, you are requested to contact doug.jackson at ewa-australia.com or Ph +61 2 62306833 and delete the email. This message is not to be copied or distributed to other parties without the express permission of the author. Any personal information in this email must be handled in accordance with the Privacy Act 1988 (Cth). ============================================

17 years, 9 months

Looking for final rev IBM PC/AT roms.

by fireflyst＠earthlink.net

Hi, I have a PC/AT that I believe the ROM BIOS has gone bad in. Does anyone here have the final rev (November 1985?) BIOS ROM image around that I can use to check my ROM against and/or burn another copy if need be? I use this machine on a constant basis so to have it running again would be a real boon. Thanks Julian

17 years, 9 months

Rant about loaning vintage computers for ad shoots and props

by aek＠bitsavers.org

> As has been pointed out, Wired totally stiffed us on the credit. > These guys are total douchebags. > If any media company comes to you to ask if they can borrow something from > your collection, your first question to them should be, "What's your > budget?" And if they fumble around with a non-answer or say you'll get > exposure or credit or other useless intangibles, tell them to take a hike. > They are just trying to take advantage of your naivete. yup... I wasted half a day looking for the Electrohome brown monitor these jerks wanted for the shoot because they were being nagging PIAs to our publicity person.

17 years, 9 months

early desktop TCP/IP implementations

by aek＠bitsavers.org

> The pc based tcp/ip work done at > MIT. That was the first tcp/ip on a pc I think And THAT software (which was sold by FTP Software) was based on BCPL code for the Alto.

17 years, 9 months

Rant about loaning vintage computers for ad shoots and props (was Fwd: [FG] WarGames: A Look Back at the Film That Turned Geeks and Phreaks Into Stars)

by sellam＠vintagetech.com

Dave McGuire asked: > Is that not a standard IMSAI floppy subsystem, the one that uses the > same drives as the DEC RX01? Yes. However, it's missing the control logic board :( As has been pointed out, Wired totally stiffed us on the credit. They gave partial (partial as in they didn't follow my instructions) credit to me...can you find it? These guys are total douchebags. And on this note I would like to entreat the CC community to realize that the items in their collection are rare and valuable and in demand, and not only that but so is your time. This stuff is getting harder to find. You can't just go to the local hamfest or surplus shop anymore and pick up a dual 8" floppy drive, not to mention an IMSAI dual 8" floppy drive. Many of you have paid good money to collect, restore, and store this stuff for years now. You should get compensated for it. If any media company comes to you to ask if they can borrow something from your collection, your first question to them should be, "What's your budget?" And if they fumble around with a non-answer or say you'll get exposure or credit or other useless intangibles, tell them to take a hike. They are just trying to take advantage of your naivete. At a minimum you should request $100 in compensation for your time and trouble. Also make sure they put down a deposit, or at least put in writing and HAVE SOMEONE SIGN OFF ON IT that if they damage any part of it, even a tiny scratch, they will compensate you for $X (fill in the X). It's either that or they have to dredge up stock photos or footage, and that will cost them way more, not just in licensing fees but in the time to locate what they need. You guys all maintain a valuable resource with your blood, sweat and tears. Don't underestimate the value of your time and trouble. Don't let anyone take advantage of you. I'll be happy to consult with you or even represent you if such cases arise. I will be happy to do this at no charge. I don't want to see anyone taken advantage of. -- 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 ]

17 years, 9 months

more adm3 stuff

by sellam＠vintagetech.com

Eric pondered: > > No, just until you're about in your mid-30s or so. > What? Seriously: http://www.nytimes.com/2006/06/12/technology/12ring.html?_r=1&oref=slogin -- 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 ]

17 years, 9 months

Double-wide equipment cabinets available

by sellam＠vintagetech.com

I have a couple large double-wide 19" equipment cabinets that used to contain the components for a Nicolet NMR spectrometer. They are six feet tall and would hold lots of gear. Before I scrap them I wanted to offer them to anyone who could use them. I would like a token amount (basically the cost of the steel scrap, which would be maybe $30-$40. Local pick-up would be required (I really doubt someone would want to ship these). If there's any interest let me know ASAP and I'll send photos. I need to be rid of these within the next few days as they are consuming valuable space that I need to recover. Please reply directly to me. 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 ]

17 years, 9 months

What is a safe way to clean corrosion?

by madodel＠ptdprolog.net

I just took apart a Thinkpad 701c that has a BIOS password that I am attempting to clear. There is some powdery residue caked inside the battery compartment that has leaked into a few areas surrounding it. Is there a safe way to remove this? Mark

17 years, 9 months

Sun & DEC stuff in Rochester

by slawmaster＠gmail.com

I'm trying to get rid of some stuff I'm not using, so if anybody wants to come and get it... I'm open to deals, trades, and negotiation on everything. Sun Ultra 10, 440 Mhz, 256 MB RAM, 9 GB drive. I'd like a little cash ($20?) or booze in exchange for this. Sun Ultra 1, 175Mhz (?), 64 MB RAM, 9 GB hard drive. Trade for beer? 20" Sun monitor, 13w3. Take it for $5 or I'll throw it in with either of the Sun boxes Sun Type 5 keyboard & mouse to go with either of the computers. DEC Multia, Alpha processor @ 166Mhz, 64 MB of RAM, no hard disk. $10? and finally Cisco 7505 router w/ 4 fiber Fast Ethernet ports and FDDI interface. I have tested it, I know it boots. $75 (I feel the need for compensation after hauling this around for 2 years) John -- Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

17 years, 9 months

Pointless question...

by aek＠bitsavers.org

> Suppose one wanted simulate one in modern components. How would you > do it, if you had, say, a million bits to store? Fewest parts would be to use a FIFO feeding the "O" back to the "I" I had thought about building a state sequencer this way once for a project where the sequence was of programmable length, but didn't require branching. -- The ADM3 'A' version differed from the original by replacing the recirculating shift registers with 2102's and a 10 bit counter.

17 years, 9 months

Northstar Advantage in Seattle for sale trade.

by michaelgreen42＠comcast.net

Any interest in a Northstar Advantage? I know pretty much nothing about this machine but it does appear in good shape.

17 years, 9 months

Micro Data PC230 (South Australian computer)

by thrashbarg＠kaput.homeunix.org

Hi, A while ago I got one of these off a friend of a friend and got it going a few days ago. I was wondering if anyone had any information about it, specifically a technical reference manual. I'd like to have a closer look at its architecture, just out of curiocity and for this... The hard disk interface is a WD33C93 and has a BIOS to let MS-DOS access it. It currently has its original 20MB Miniscribe hard drive internally and I attached an external 140MB 5.25" SCSI drive. Just as an experiment, I attached a CD-ROM drive to it and set the number of SCSI drives to three. It detected the CD-ROM drive when there was a disk in it, but MS-DOS doesn't natively support ISO9660 drives. So I made a 20MB hard disk image in QEMU, partitioned it in FDISK and formatted it, then burnt the image to a CD. MS-DOS detected it as a drive first go. This shouldn't be a surprise if you know a thing or two about the SCSI architecture. This makes me wonder if there's such thing as an ISO9660 extension for MS-DOS that will let me access CD's in this way. The issue is if I don't have a disc in the CD-ROM drive when it boots it will fail to detect the drive. The other option is writing a driver for the WD33C93... Thanks, Alexis

17 years, 9 months

more adm3 stuff

by sellam＠vintagetech.com

John Floren queried: > Do you guys know any good fixes for that kind of thing, or am I cursed > to hearing that terrible head-numbing whine forever? No, just until you're about in your mid-30s or so. -- 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 ]

17 years, 9 months

multiprocessor microPDP-11/83

by chd_1＠nktelco.net

A post about a multiprocessor PDP-11/45 made me think about a multiprocessor microPDP-11/83. Is it possible to connect the Qbus of two microPDP-11/83s together? what about Unibus PDP-11/84s? The -11/83 is more interesting, because I can replicate it. Since bus arbitration is handled by the processor, arbitration on one of the processors would need to be disabled. The KDJ11-B Users Guide doesn't suggest a way to do this. The arbitrating processor would also have to field all the interrupts. I am tired of reading about the first computer on the internet... Besides, I have not heard any of you wise guys argue that there couldn't be a first computer on the internet (or Internet) or any network since a single computer can't make up a network. -chuck

17 years, 9 months

Small Torx (Was: What is a safe way to clean corrosion?

by dm561＠torfree.net

Don't overlook the Dollar stores (or whatever they're called in your part of the world); that's where I found my tiny torx. And FWIW, up here N of 49 Active sells a fairly complete 32-pc security bit set for ~$10.00. m

17 years, 9 months

ultrix on simh

by tommytune123＠gmail.com

Hi, I'm running Ultrix V2 on Simh quite happily today and have a couple of goals I don't know how to accomplish. I'm hoping someone here can help. First, the tape I installed from created two very small virtual disks and filesystems on rl00 and rl01. I would like to be able to create a third virtual disk with more space so I could actually get some work done. Does anyone know how to create and mount a new filesystem on a new virtual image under simh/ultrix? Second, I would maybe like to upgrade to Ultrix 3.1, maybe on a vax if it is supported. Is there a howto for doing so under simh, including where to find a good boot tape? Third, I would like to find and install the online manuals, which were missing from my distribution. Unfortunately, I have not been able to find them. Are they available online, or does someone have a set they can tar up and share? I'm pretty UNIX savvy, but I really started getting deeply interested and involved in the SYSVR2 days. My experience with DEC hardware and software >from an administrator's position is nonexistent, but I really want to learn. Someday I would actually like to have a microvax running UNIX here to play with. But that's another story. Thanks in advance for any wisdom you can impart. Tom

17 years, 9 months

adm3a and Linux

by slawmaster＠gmail.com

I pulled out my ADM-3A today in an effort to stave off studying and homework and such; hooked it up to my Debian box, only to find that there isn't really very good support for it under Debian. I use this line in my inittab: T0:23:respawn:/sbin/getty -h -L ttyS0 9600 adm3a and while I can log in, vim for example looks TERRIBLE, ls tries to do color and fails miserably, etc. When I log on to one of the Solaris machines on campus via SSH, they handle things gracefully. ls works right, vi is excellent. Is the difference in our terminfo files, or what? I'm not really sure how these things work so I'm hoping somebody can help me figure out what's up here, because I'd like my Debian computer to play nicely with the terminal. Thanks John -- Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

17 years, 9 months

what happens when a Tandem NonStop stops

by spectre＠floodgap.com

http://thedailywtf.com/Articles/Designed-For-Reliability.aspx Those of you who find the Tandem NonStops fascinating will enjoy this story of when this particular Tandem NonStop does in fact stop (due, of course, to human failings). Highlights: in-memory patching and repair guy hits the wrong switch. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- TRUE HEADLINE: Police To Begin Campaign To Run Down Jaywalkers -------------

17 years, 9 months

more adm3 stuff

by slawmaster＠gmail.com

The ADM-3A seems to be working ok now, but I really notice the high-pitched whine of the CRT. It's waaaay up at the upper limit of hearing and not very loud but it IS extremely piercing. To the point where I think it is causing headaches. Do you guys know any good fixes for that kind of thing, or am I cursed to hearing that terrible head-numbing whine forever? John -- Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

17 years, 9 months

Experience with ECB bus?

by lynchaj＠yahoo.com

> -----Original Message----- > From: Andrew Lynch [mailto:lynchaj at yahoo.com] > Sent: Sunday, July 20, 2008 5:17 PM > To: 'cctalk at classiccmp.org' > Subject: Experience with ECB bus? > > Hi > > I am designing an ECB bus backplane for my N8VEM SBC project and am > looking for some peer review prior to going to manufacturing of these > PCBs. The N8VEM SBC seems to be working out alright. About a half dozen > people have successfully built the SBC so now it is time to start thinking > about peripheral expansion. > > Although the N8VEM SBC uses the ECB bus for expansion, I have not ever > used ECB bus machines as they are common in Europe but extremely rare in > the US. I have made an ECB bus backplane prototype using prototype boards > and it works well enough so I think the basic concept is sound. > > However, I would like to make this ECB backplane as common and general as > possible so other hobbyists can use it not just N8VEM SBC builders. I > would really like to avoid any inadvertent N8VEM unique extensions. > > If you have experience with ECB bus based machines, I would like to hear > your comments and suggestions. > > So far, the ECB bus backplane has six DIN 41612 connectors. All 96 pins > are routed. Pins for IEI/IEO have jumper pads per connector to allow > usage of Zilog peripheral interrupt priority scheme. The backplane has > its own Vcc and Gnd, including a power switch and LED power indicator. > > The PCB is 2 layer to keep costs low. Each side has a ground fill zone > for a low impedance ground. I will be using the double thick PCB material > (3.2 mm) for rigidity and the double weight copper trace for low > impedance. > > Vcc and ground traces are triple wide (51 mils) minimum and also routed on > both the component and copper sides of the board. The rest of the traces > are the usual 17 mils wide. > > After I order some of these backplanes, I will make them available in a > similar fashion as the N8VEM SBC. The PCBs will be available for $20 each > plus shipping. The builder will have to source the rest of the parts. > > If you are interested in helping or have questions, please review the PCB > backplane design at: > > http://groups.google.com/group/n8vem/files?&sort=rdate > > There are two recently uploaded PDF files containing the schematic and the > PCB layout. > > Thanks in advance for any *constructive* feedback. Have a nice day! > > Andrew Lynch [AJL>] Hi All, Well, it seems like no one has experience with the ECB bus which rather surprises me as I am sure there are many people on this list from Europe and/or the UK. If there is anyone with PCB design experience who could review my design, I would appreciate it. The PCB will run at around 4 MHz and some may take it as high as 10 MHz. The N8VEM SBC runs at 4 MHz so that is my desired operating speed but I cannot rule out people modifying their SBCs to run faster. Specifically, I am concerned about using the extensive ground fill zones and also the ground and VCC traces are on both the copper and component sides of the PCB. Even though the PCB is small, am I causing potential ground loops with excessive traces? I am trying very hard to make low impedance paths to ground and also allow sufficient low impedance current carrying capacity for VCC. I suspect the fully loaded ECB bus would draw maybe an amp or two on the VCC rail. The worst case for the N8VEM SBC is about 500 mA or so and much less if CMOS components are used. If anyone could help, I would much appreciate it. The ECB is a rather uncommon bus in the US but was used extensively in home brew computer projects in Europe. The ECB bus is a natural extension of the Z80 and is very nice to work with not to mention extremely affordable compared to S-100 or STD since you can make your own inexpensive peripherals with a cheap prototype board ($5) and a DIN 41612 connector ($3). My N8VEM SBC project uses the ECB bus and will plug into the ECB backplane when it is available. I will be selling the ECB backplane connector PCBs to anyone interested in the same manner as the SBC PCBs are available. You can see additional details at the N8VEM website: http://groups.google.com/group/n8vem Thanks and have a nice day! Andrew Lynch

17 years, 9 months

cctalk Digest, Vol 59, Issue 18

by mtapley＠swri.edu

At 12:00 -0500 7/19/08, C. Sullivan wrote: >...I'm going to out on a limb here and assume that you are trying to use >a variable power supply wall-wart with one of those little slider >switches on it to do different voltages (is that the Radio Shack # >270-1551?). >... I have one like that. It works in many cases, but I'm not much of a fan. See below. >...Worse, most cheap supplies of this >type will sag as the load exceeds the rated maximum: so while it might >indeed be 9VDC at 100mA, at 175mA of load it can drop to 7.5V or lower. Worse yet... mine does the inverse. Plugging it in unloaded, with the switch set to 3V, still lets the voltage rise to around 10V (as indicated by my analog multimeter, so it's not *totally* unloaded). That scares me. I'm sure any reasonable load would drag it down near 3V, but ... is there any silicon in my load that wants to not see 12V, even powered off? >A proper lab supply will allow you to >give anything you find the RIGHT power, cleanly, and with overcurrent >protection that could save the device from frying. Seconded, even though I have not done so myself (yet). While on the topic, has anyone any experience with the Velleman integrated DMM/Power supply/soldering iron? http://www.vellemanusa.com/us/enu/product/view/?id=522812 Price isn't that great and all of the parts look sort of beginner-level, but the compact size is appealing. >...Velleman makes a 1A kit power supply >that is more than adequate for a lot of this kind of stuff AND has the >bonus of being real easy and fun to build. It is $12.95 from Ramsey >Electronics (www.ramsey.com). maybe http://www.ramseyelectronics.com ? The given URL advertises winches. -- - 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.

17 years, 9 months

ADM 3 OR 3A NOT SURE AVAILIABLE

by us21090＠yahoo.com

Where are you located? Scott ----- Original Message ---- > From: "RLAAG at pacbell.net" <RLAAG at pacbell.net> > To: cctech at classiccmp.org > Sent: Tuesday, July 22, 2008 3:11:10 PM > Subject: ADM 3 OR 3A NOT SURE AVAILIABLE > > I HAVE AN ADM 3 OR 3A, NOT SURE WHICH, I THINK THAT I DON'T NEED... WHEN I USED > IT YEARS AGO IT HAD SOME HORIZONTAL PULLING BUT MORE OR LESS WORKED THEN... NOW > I DON'T KNOW BUT DIDN'T WANT TO TEST IT OUT... THE SCREEN HAS SOME STRANGE > SPOTS APPEARING BUT THEY MIGHT BE JUST ON THE SURFACE OR MIGHT BE INSIDE LIKE > THE OTHER POSTS ON HERE ABOUT THAT... I DON'T KNOW, BUT MIGHT BE GOOD FOR PARTS > ANYWAY... CAN LET THIS GO FOR SHIPPING AND A LITTLE POCKET CHANGE...

17 years, 9 months

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test-drb