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101090 discussions

help (re) booting xenix after cmos battery failure

by brad＠heeltoe.com

A friend of a friend has an old xenix machine; Compaq DeskPro 386 running Xenix. He shut if off after running for years and it won't boot because the cmos battery is dead. The disk is an ESDI drive attached to a Compaq ESDI/FLPY controller (copyright 1989) ISA bus card. He says can't see any way to enter a "setup" mode in the BIOS. Anyone know how to fix this? apparently it has his Alfa Romeo motor club data on it (so it's clearly +10yo :-) Anyone know if the xenix fs can be mounted on linux? (I doubt it, but I thought I'd ask) -brad

17 years, 7 months

Tandy 1000 SX Motherboard and Manuals

by matt.valerio＠gmail.com

Hey everyone, I have a Tandy 1000 SX that I'm looking to get rid of. Anybody want it? Here's the scoop. Tandy 1000 SX (circa 1984) - Motherboard, cards, and power supply (sorry, I don't have the case, long story) - Intel 8088 CPU dual-speed 7.16/4.77 MHz (switch on back), 640K RAM - VGA graphics card (high-density 15-pin DSUB connector) - 1 parallel port, 1 serial port, and a light pen port - 2 Joysticks - Keyboard (if I can find it) (large 6-pin DIN connector) - 2x 5.25" floppy drives (A: and B:) - ISA expansion card with a 20MB (I think) hard drive (C:) - MS-DOS 6.22 installed on the hard drive - Various 5.25" floppies\ Manuals - Technical Reference Manual, Boxed (25-1511) (Schematics, low-level I/O details, etc) - BASIC Reference Manual, Boxed (25-1502) - MS-DOS Reference Manual, Boxed (25-1501) - Tandy 1000 SX Quick Reference, Spiral Bound - BASIC: A Reference Guide, Spiral Bound - Tandy 1000 SX Programmer's Reference, Spiral Bound (Assembly language guide) - Turbo Pascal 3.0 and 4.0 reference manuals If you'd like it and are in the Columbus, OH area to pick it up, shoot me an email! Highest offer gets it :) -Matt

17 years, 7 months

Standing Request: Need Xerox 820 II

by snhirsch＠gmail.com

I have been on a quest to obtain one of these. If you have one for sale at non-bandit rates (see classcomputermuseum's auction for an example of the latter), or know of one, please advise! Thanks. (Have a real 820 motherboard and a Ferguson BigBoard already. I need the actual machine) STeve --

17 years, 7 months

HP 5036A microprocessor lab - searching for copy of "Practical Microprocessors"

by hpjimbondoris123＠dorisland.net

Phil: If you download the manual you will see that it is in color and was scanned at 300 dpi color. I believe that HP did this on purpose so that you could not copy it on a copy machine but rather contact them and purchase another copy. On the rom listing I had to even play with the contrast and brightness just to get it to be read. Please if you want take a crack in reducing the file. As I spent the entire day just on the 40 pages it was the best I could do to get out the document for those folks whom have the trainer without the manual when it came to the schematics those were scanned in black and white as they are black and white. Jim

17 years, 7 months

TU-58s (was Re: Some progress with my PDP-11/73 system)

by ajp166＠bellatlantic.net

> >Subject: TU-58s (was Re: Some progress with my PDP-11/73 system) > From: "Ethan Dicks" <ethan.dicks at gmail.com> > Date: Wed, 11 Apr 2007 21:54:24 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 4/11/07, Jerome H. Fine <jhfinedp3k at compsys.to> wrote: >> But I once had a project that >> used a real DEC TU-58. Not the fastest "random" >> access device!!!!!!!!!!!!!!!!!! > >They work better as "sequential" access devices - being long and thin >and travelling in one dimension, go figure. We used to optimize file >order on our console TU58s to speed up the boot times on our 11/725s >and 11/730s. Since the file order doesn't change, one just builds a >TU58 with EXCHANGE with each file following the other. The console's >8-bit-micro must cache the directory block, since the tape didn't whip >back to the start between each file. > >Using unaltered console tapes from DEC resulted in, IIRC, about 15 >minutes from turning the key to booting the hard disk. Replacing that >tape with one of our own devising shortened that pre-boot time to well >under 3 minutes. > >I'd hate to rely on a TU-58 and no other block-addressable media on a >PDP-11, though. I survived a PDP-8 with a TD8E and TU56, but it was >somewhat tedious (cool to watch, though). TU-58s weren't as cool, >IMHO. So happens one of my "small" pdp-11s uses a Tu58. the system is a BA-11V with an 11/23 256k of ram, DLV11J and MRV11 rom(boot). Takes 10 minutes to boot, setup VM: then copy key files to and reboot. After that it's pretty decent even if I have to access a file on tape. Everytime I runs it with a bunch of kids of the current PC generations they go gaga and comment on how slow then I explain the amount of ram and storage then they are amazed it can be a functional machine with so little. They can't imagine a useful machine with 32kW of ram and 256kb of storage. On the flip side I've used that same Tu58 to bring up iron that had no removable storage. It's slow but very dependable. Allison

17 years, 7 months

more Flexowriter

by sturges＠vt.edu

Dear Classics: I just gotta get a Flexowriter. Who has one that will sell it to me? I had one years ago and gave it up in time of crisis. (Yes, I deserve it.) No reasonable asking price refused! Cheers, Dr. Bob

17 years, 7 months

Looking for Norsk Data ND-100 info.

by axelsson＠acc.umu.se

Hi! I'm looking for ND-100 information. A couple of my friends have started to work on a ND-100 emulator and it is progressing fast... fast to a point where we are lacking information about the inner workings of the ND-100 CPU. Specifically we are looking for information on the real time clock interrupt and micro code programming but other information (manuals, schematics or programs) is also interesting. I currently have the following manuals that I'm transforming into pdf:s as time permits. * ND-06.007 BIG MULTIPORT MEMORY SYSTEM * ND-06.014 ND-100 REFERENCE MANUAL * ND-06.016 ND-100 INPUT/OUTPUT SYSTEM * ND-30.003.06A : SINTRAN III System Supervisor * ND-30.025.02 : COSMOS Operator Guide * ND-30.071.1 EN : ND-5000 Series User Guide * ND-40.004.06 : Norsk Data Documentation Catalogue * ND-40.012.1 EN : Information Pamphlet for Norsk Data Customers * ND-60.014.01 : Page III-1-1 to A-9 (some pages missing) * ND-60.046 TRACE ROUTINE * ND-60.047.03A : NORD PL User's Guide * ND-60.050.06 : SINTRAN III Users Guide * ND-60.066.04 : ND Relocating Loader * ND-60.074.01 : NORD-10 FORTRAN SYSTEM Reference Manual * ND-60.088.03 : ND Screen Handling System * ND-60.096.01 : Page 2-16 to D-3 * ND-60.111.03 : ND TPS User's Guide * ND-60.132.03 : SINTRAN III Timesharing/Batch Guide * ND-60.151.02A : SINTRAN III Utilities Manual * ND-60.158.3 EN : SYMBOLIC DEBUGGER User Guide (2 ex) * ND-60.163.4 EN : COSMOS User Guide * ND-60.196.01 : BRF-LINKER User Manual * ND-60.230.01 : SINTRAN III J-version Release Informaton * ND-60.236.1 EN : ND-100/500 SORT-MERGE User Guide * ND-60.264.1 EN : SINTRAN III User Guide * ND-63.001.02 : Introduction to NOTIS-WP * ND-63.026.02 : NOTIS-CALC Handbok (in Swedish) * ND-63.042.1 EN : NOTIS-WP M Release Information for new users * ND Ring binder with cable diagrams * Am201B/Am2901C Four-Bit Bipolar Microprocessor Slice, AMD. Page 5-1 to 5-18 * PASCAL : Instructions in Swedish for running Pascal on ND-100 If you have anything outside of this list please let me know. I will borrow for scanning, buy or trade anything of interest. The hardware we got access to is a ND-100 satellite, two ND-100 racks with disks and 8 inch floppys in parts and a nonfunctional NORD-10 in a rack. When time permits we will try to get it running. /G?ran

17 years, 7 months

Two more Craters & Freighters happy experiences

by legalize＠xmission.com

I recently had two more items packed and delivered to me by Craters & Freighters. Holy shit, what a difference it makes with that company. A Tektronix 4170 local graphics processor and an Evans & Sutherland PS 390 base unit arrived with no scratches, no falling apart pallets and everything intact. The tally so far: + seller freight packed deskside SGI Onyx + C&F packed lot from dovebid (Tektronix graphics terminals) + C&F packed Megatek graphics terminal + C&F packed E&S PS390 + C&F packed Tektronix 4170 - CTS packed deskside SGI Onyx & Octanes - adcom worldwide packed SGI Octanes, O2s and monitors In the case of CTS/adcom worldwide, the only reason that I used them and not C&F is that there wasn't a C&F that could go to Reading, PA and pick up the stuff from a dovebid auction. C&F may not be the cheapest; to be honest, when C&F service is available I don't even bother to check with other freight shipping service companies. However, what good does it do you to save a few dollars on shipping and have something arrive smashed or cosmetically ruined because of poor packing? I heartily recommend Craters & Freighters for your packing and freight shipping needs. <http://www.cratersandfreighters.com> -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 7 months

atc-510 simulator

by dbstaats＠gci.net

Joe: I'm with the Alaska Chapter of the 99s and we have two 510 ATC's, one works and one does not. Do you have any for sell with the manuals? Also do you know who works on them? Thanks, Brenda

17 years, 7 months

SS10s and SS20s free for local pickup or $10 + actual ship

by rescue＠hawkmountain.net

I have 3 SS20s and 4 SS10s. Mostly complete. All have one or more processors (ranging from SM41 to SM61), I believe all have RAM, and some have one or more drives. No GFX as these were last used for servers. These are free for pickup in Sharon, MA 02067, or I can bring them with me to work in Cambridge, MA 02140 (on the same road as Alewife T station). If you want one shipped... $10 + actual ship with the $10 to cover the materials/time to pack and haul to PO/FedEx/UPS/etc. If these don't move before that dumpster leaves here (1-2 weeks >from Friday), then I'll pull the CPUs, RAM, and drives, and heave them into the dumpster. The SS20s are all Aurora I chasis. I don't recall any having CD rom drives... one or two fo the might have floppy drives. -- Curt

17 years, 7 months

LED displays (TIL305, TIL308, etc.)

by dm561＠torfree.net

Date: Tue, 30 Sep 2008 03:48:31 +0000 From: Ethan Dicks <ethan.dicks at usap.gov> Subject: Re: LED displays (TIL305, TIL308, etc.) <snip> >I have one or two of a few different types, but no loose 9368s (only >installed in boards already). >One thought I had for trying to use a reduced-pin-count MCU-based numeric >display was a 7447-type chip on 4-bits of an I/O port, and a 74145-type >BSD decoder on the other half of the port - up to 10 digits easily, or 9 >with simple blanking (write 0 to the '145 and don't hang a digit off of it). <snip> >-ethan ----------------------- That's the way it was usually done, although depending on display size (current) a '145 might not have enough oomph to drive the digits directly without a buffer. I have a few 9368s if you're desperate; it decodes to hexadecimal (for common cathode displays), whereas the 7446/7/8 displayed those odd symbols (and blank for F of course). m

17 years, 7 months

VT220 Keyboard Error 4?

by charlesmorris800＠centurytel.net

I turned on my VT220 for the first time in nearly a year. The screen says "VT220 Keyboard Error 4", all four green LED's (on the top right of the keyboard) stay lit, and nothing appears on the screen when I type. Disconnecting and reconnecting the coiled-cord between the keyboard and the terminal causes a cursor block to appear on the screen, but the keyboard is still locked and the LEDs stay on. Power-cycling the terminal shows the same error message. However, the boot prompts from the 11/23+ are displayed normally, so the receive part of the terminal at least is working. Where should I start looking, before replacing the keyboard? thanks for any hints -Charles

17 years, 7 months

HP 5036A microprocessor lab - searching for copy of "Practical Microprocessors"

by hpjimbondoris123＠dorisland.net

Hi: I have this manual and have scanned in 40 pages but its allready 125 megs and its 400 plus pages most emails will not allow this much of an attachment got any ideas? jim jimgeneva at yahoo.com

17 years, 7 months

Unusual media ideas (was RE: Vinyl Data- Classic Computers / Indie music tricks crossover)

by IanK＠vulcan.com

I also recall one of the magazines from the early days championing computer-readable strips printed in the magazine, similar to a UPC code but obviously much longer. Byte? Kilobaud? It's not coming up from long-term archive.... ________________________________________ From: cctalk-bounces at classiccmp.org [cctalk-bounces at classiccmp.org] On Behalf Of Chuck Guzis [cclist at sydex.com] Sent: Tuesday, September 30, 2008 4:39 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: Vinyl Data- Classic Computers / Indie music tricks crossover --- On Tue, 9/30/08, Tony Duell <ard at p850ug1.demon.co.uk> wrote: > Not the same thing, but I beleive that Elektor magazine sold vinyl > records of programs for their computer projects (the TV games computer, > Junior computer, SC/MP system, etc). These were programs only, no > human-type music on the same disk. In keeping with the spirit of this list, who's going to be the first to encode CUTS data on a wax cylinder? Cheers, Chuck

17 years, 7 months

GIGI

by aek＠bitsavers.org

>> I have little experience with newer terminals, but the one I've wanted >> for a while is a GiGi (VK100?). > > I had seen one of these when it first came out. I think we got a poor > demo at the time from what I read of the specifications now. > > I picked up a couple of these from ebay recently. Someone was looking for someone to dump the roms from a GIGI a few months ago.

17 years, 7 months

Need Tecmar JrCaptain power supply specs

by scheefj＠netscape.net

Hello everyone, My JrCaptain and its power supply (the wall wart) have become separated. I'm pretty sure I still have it, it's just that I don't know which one it is. Naturally none have the Tecmar name. I'm sure someone here has one of these, so would you please look at the wall wart or power brick and tell me what it says? Thanks, Jim

17 years, 7 months

GIGI

by aek＠bitsavers.org

The thread was "DEC Gigi/VK100 ROM images?" on comp.sys.dec in mid April started by Andy Valencia.

17 years, 7 months

anyone utilizing early Macs to access the internet?

by mc＠media.mit.edu

> I've been told using the compact Macs are an exercise in futility. > But what about the Mac II's? (original II, IIx, IIfx, IIcx). > > I was just curious. Right. For a pre-Mac II (e.g. Mac Plus), even Appletalk network file sharing was an exercise in futility, let alone Ethernet. Until the Quadras came along, an Ethernet interface was not built-in. You had to buy a separate network card for you Mac II, and more likely than not, it used "thin ethernet" (coax) not 10-base-T. I did use some 10- base-T SCSI Ethernet adapters for non-expandable Mac laptops around 1975, but they were barely up-to-snuff. While I was in grad school, from 1997 through 1999, I used a Quadra 700 running IE for browsing the web. It seemed unbearably slow even then, and I think I switched to Netscape because its rendering engine was more efficient (IE often had to redraw the whole web page twice-- e.g. to figure out how big the images were, and on a 68040 that was a noticeable delay). Plus a lots of things have changed since then. I don't think I even needed a Flash plugins at the time. Not that you would even think of watching a YouTube video on a processor that slow. For email I used GNU emacs RMAIL running on my group's Unix server. I had to abandon it when MIME became the norm around 2000. Bottom line: For small values of "access the internet" the older Macs were serviceable. By modern standards, the old browsers are curiosities at best. But if you need to transfer some old files off your old Mac, the connectivity is there, and I have been grateful that FTP still works even today. --Tim

17 years, 7 months

Downsizing My Collection

by trebor72＠execpc.com

I just had a bout with Colon Cancer and will have to start downsizing my Computer collection which goes back to the early 80's got some S-100 stuff then PC's from the first thru XT, AT, 286, 386, 486's, 586, up to PII's I also have a complete IBM Series/! 110V half rack and full rack and spare External floppy. Plus 4978, some 3101's some TI 810 printers Cabling. Everything has to go. I also have a Pair of NEC APC's that run. Got two old IMS 8000 8080 cabinets. Have some S-100 cards and 8"drives. Got a Teletek Systemaster 65K CP/m SBC that used to work. even a boot floppy and Docs. THIS Has been sold Got a Mariposa Design 64K Static Memory Board plus Manual.; Even have a Tarbell SBC 8-16 that used to run Got all the Boots and Docs Boy Am I Puter POOR. Got a N* Horizon and a ton of Cards thats up for Grabs. Got a Cromemco ZPU and a 16K static card Plus an 8K ByteSaver fully populated sans Proms. Got a ADS Promblaster wating for one chip. Found one at Unicorn but need to sell something to get the Bread to purchase Got a Advanced Digital Corp S-100 MFM Controller but not sure of its Status. Got a Tarbell FDC 1011C and a 1011D Fully populated that ought to work Got two Vector Graphic CPUs and a Z80 Got some spare Compu-Pro cards 8085, Disk1 that needs fixing, Disk3, couple RAM22.s RAM17.s Interfacer 3 and 4 that I may put up if the price is right Looking for Shipping and Handling and a few Bucks to put my pocketbook to rest. I'd go the E-Bay Route but they only allow Credit cards for PayPal and I don't have one. I am strictly "Cash on the Barrel head" which includes Money Orders My E-Mail is good if anyone is interested. I am located just NW of Milwaukee in Menomonee Falls right off of US 41-45 for PICK-UPS I will be posting Vintage Computer Market Place and Comp.os.cpm and Maybe even E-BAY Bob in Wisconsin

17 years, 7 months

HP 5036A microprocessor lab - searching for copy of "Practical Microprocessors"

by hpjimbondoris123＠dorisland.net

Hello group: I have a person whom was kind enough to post the PDF excerps from scanning "Practical Microprocessors" which is the lab manual for the HP 5036 microprocessor trainer.. I scanned the schematics, rom listing and a few other pages. You can find it on Dave's site here http://www.neurotica.com/misc/practical_microprocessors.pdf be warned that in order to make it worth while to read its 125 megs I suggest that you print it out the 40 so pages. I printed it to make sure that its readable. Spent a day to scan it and build the pdf so I hope those with the trainer and have no manual will find it usefull. Jim

17 years, 7 months

Compaq Portable II flat CMOS battery

by gordonjcp＠gjcp.net

Before I go hauling all those little Torx screws out (yes Tony I *do* have proper Torx bits, unlike the last person to be inside it), can anyone point me in the direction of the CMOS battery? I bet it's right underneath the monitor, or something. Gordon

17 years, 7 months

IBM RS/6000 Help / advice wanted

by john_a_s2004＠hotmail.com

Hi, Thanks for the encouraging responses, I'll go and have a read. Someone also kindly emailed me these URLs with further useful info: http://www.pimpworks.org/ibm/aixled.html http://www.pimpworks.org/ibm/ledcomm.txt I have contact with a AIX CD, and I have obtained (a few!) SCSI CD drive that cn be tweaked to the correct sector size. Couple more questions though: 1. Is there a back-up battery (perhaps in a RTC chip like on a Sparcstation 2), that will have surely failed by 2008. 2. Is there a source to download diagnostic floppy set, I hadn't known about these until today. Thanks again, John _________________________________________________________________ Discover Bird's Eye View now with Multimap from Live Search http://clk.atdmt.com/UKM/go/111354026/direct/01/

17 years, 7 months

IMSAI 8080 on eBay

by michaelgreen42＠comcast.net

You are probably right. Its not like I'm trying to hide anything but I really don't know much about these. Other than the fact that it powers up that's about it. Picked it up local with the idea of "wow IMSAI" but realized it's a bit out of my realm of interest, I'll never actually use it, and I need the money to go to school this Fall. I'm more than happy to answer any questions anyone has though. -------------------------------------------------------- Message: 1 Date: Fri, 19 Sep 2008 13:03:19 -0500 From: "js at cimmeri.com" <js at cimmeri.com> Subject: re: IMSAI 8080 on eBay To: cctech at classiccmp.org Message-ID: <48D3E967.2020104 at cimmeri.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed >From: "Mike" <michaelgreen42 at comcast.net> >Subject: IMSAI 8080 on eBay >To: <cctech at classiccmp.org> >Message-ID: <7CA2A42621B44381A42EB354A4390329 at pal> >Content-Type: text/plain; charset="us-ascii" > >I've decided to sell my IMSAI 8080. It is in excellent condition and comes >with two Discus 8" floppy drives. It has been posted on eBay. >http://cgi.ebay.com/IMSAI-8080-with-8-Floppy-Drives_W0QQitemZ120307050411QQ c >mdZViewItem?hash=item120307050411&_trkparms=72%3A1205|39%3A1|66%3A2|65%3A12 | >240%3A1318&_trksid=p3286.c0.m14 > For a big ticket item, that ad is really lacking in pics and information.

17 years, 7 months

choppers

by dgriffi＠cs.csubak.edu

I stumbled on a disturbing thing on Ebay. There's a guy who seems to specialize in taking apart perfectly good classic computer stuff to sell the pieces. I found him when looking for a VT100. He's selling a naked CRT that he says was taken from a working VT180. I asked him why. No answer. -- 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?

17 years, 7 months

Morrow MD3 claimed

by dgriffi＠cs.csubak.edu

The first to reply has claimed the MD3. Thanks. I'll have some motherboards for sale later on. -- 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?

17 years, 7 months

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