test-drb November 1999

test-drb@ccmp.vtda.org

211 participants
749 discussions

Z8530 (was Re: Strange boards in Apple//e)

by ethan_dicks＠yahoo.com

--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote: > THe 8530 is a complex sync/async serial chip IIRC. It's the one used in > the Macintosh, etc. And older Sun workstations. It's a great chip. We used to use it for our DEC Qbus and VAXBI bisync/SNA protocol emulator boards... very fancy stuff for classic equipment. A few gotchas like you can't access the registers in back-to-back I/O instructions... there's some internal delays especially on the 4Mhz parts when used with an 8Mhz MC68K CPU. I expect that on a 6502, there's no problems, though. Also, the ASDG Serial card for the Amiga used the Z8530 - 6Mhz and 8Mhz versions. -ethan ===== Infinet has been sold. The domain is going away in February. Please send all replies to erd(a)iname.com __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com

25 years, 1 month

(3) ASR 33, KSR 33, Friden Flexowriter (fwd)

by denic＠liii.com

Was Referred to you by Stan below. Am trying to establish the value of these items if any? Dennis Date: Sat, 6 Nov 1999 22:44:57 -0800 (PST) From: Stan Sieler <sieler(a)allegro.com> To: Dennis N. Aruta <denic(a)liii.com> Subject: Re: (3) ASR 33, KSR 33, Friden Flexowriter Hi, thanks for the note. Unfortunately, I'm not currently looking for any teletypes. If you're looking for a collector to take them, try emailing to: classiccmp(a)u.washington.edu -- Stan Sieler sieler(a)allegro.com www.allegro.com/sieler/wanted/index.html www.allegro.com/sieler Dennis Aruta, Owner ShipFix (c) & International Commerce List (c), <a href="http://members.aol.com./denicny/trade.html"> INTERNATIONAL COMMERCE + SHIPS </a> <a href="http://www.InsideTheWeb.com/mbs.cgi/mb522111"> Visit my Message Board </a> ICQ #174727 Mailing address: Denar Chartering Inc.(since 1971) Phone: 516-326-2300 P.O. Box 1147, Denar House Fax: 516-326-2519 New Hyde Park N.Y. 11040 Tlx: 4971419 U.S.A. email: Denic(a)liii.com DenicNY(a)aol.com ---------- Forwarded message ---------- Date: Sat, 6 Nov 1999 09:24:56 -0500 (EST) From: Dennis N. Aruta <denic(a)liii.com> To: aek(a)spies.com, auction(a)coastroad.com, broswell(a)syssrc.com, bschluter(a)middleatlantic.com, daniel(a)internet.look.ca, doyle(a)indy.net, ebay(a)vintagecomputers.com, jamesog(a)mail.resa.net, mikem(a)subether.com, redison(a)cyberzone.net, reyes(a)orion.ae.utexas.edu, sieler(a)allegro.com Subject: (3) ASR 33, KSR 33, Friden Flexowriter Dear Sirs and madams, I noticed your bidding on EBAY for vintage computers. Perhaps you may have some interest in these machines? Currently have 3 ASR 33's 2 with omni modems, one with relays 1 KSR 33 programable 1 Friden Flexowriter, that I saw as imput to a cray computer at a computer museum on the web. Dennis

25 years, 1 month

Classic Computer Stuff Auction - More Items & Pictures Added

by bill_r＠inetnebr.com

No bids on most items as yet. New items added 11/3/99 and 11/5/99. Take a look. I've reorganized the page so it loads fast - just text, with links to the pictures. Added pictures of most items. http://incolor.inetnebr.com/bill_r/computer-sale.htm --- Bill's Classic Computer Emporium and Junque Sale This will be conducted as a sealed-bid auction. High bidder takes the item. Please bid by e-mailing your bid (minimum of $10 on each item) to bill_r(a)inetnebr.com (that's bill(underscore)r). Please include the item number, description, your bid amount, and your e-mail and snail-mail address and telephone number in each bid. Bids will be accepted through November 30th, 1999, although some items may close early if I receive what I feel is a reasonable offer and/or have not seen much interest in an item. In addition to the amount stated in the bid, the high bidder also agrees to pay actual packing and shipping costs, and insurance if desired, or to arrange to pick the item(s) up in Lincoln, Nebraska. Seller reserves the right to withdraw items from or add items to the auction at any time. Payment by cashier's check or money order will result in faster shipment. Payment by personal check will delay shipment until the check clears. All items are AS-IS, and no guarantee of any kind is made with regard to operability, suitability for application, safety, or completeness. Descriptions are as honest and accurate as possible; if you have specific questions about an item and are serious about placing a bid, please e-mail me at the above address and I'll try to provide additional information. This is all stuff I've collected over the years and no longer have room to keep - I'd rather not get rid of it, but at least I'd like to see it go to someone who will enjoy it and appreciate it. (Most item descriptions below can be clicked to see pictures and/or additional information on the item!) #1) Working Zenith H-89 with non-working dual external 5 1/4" floppy drive box and pix of documentation & software including HDOS, CP/M, etc. Clean and neat, with builder's name on top corner in magic marker. #2) Non-working Zenith H-89 with internal 5 1/4" floppy drives (no documentation or software). No picture available, but it looks like this (without the external floppy box on top). #3) Apple computer plotter. Worked when last used a couple of years ago. Very dusty. #4) Big box of assorted software, some old, some new. Includes WordPerfect 6.0, Tallgrass Technologies tape software, IBM DOS, etc. No guarantee that any of it is complete, but I believe a lot of it is. #5) US Robotics Courier HST Dual Standard. Worked when last used. Has been sitting on top of bookshelf and is somewhat dusty. #6) Friden mechanical calculator - two available. Stored in basement; very moldy - maybe some rust. A working one (which I am keeping) does square roots, long division, etc. Chugs along for a while sliding the carriage across the top and turning the number wheels, then does a "carriage return" and rings a bell when finished. Model STW10, Serial #'s 634453 and 644615. #7) "Fulcrum Computer Products" S-100 box. Turnkey front panel - no lights & switches. Also no top cover. Contains partially populated S-100 backplane & hefty IMSAI-style power supply. (This may have *been* an IMSAI OEM of some kind.) #8) IBM 5151 green screen monitor. Dusty. Unknown condition. #9) IBM EGA monitor. Dusty. Unknown condition. #10) IBM PC chassis with dual floppy drives & power supply. Some kind of motherboard; don't know if it's original or not. #11) Modem Tester. Appears to send test data via RS-232 at various speeds & patterns, while counting errors. Display (nixie tubes) lights up & counts. Unknown condition. #12) Tandy video monitor. Dusty. Unknown condition. #13) IBM 5151 monitor. Dusty. Unknown condition. #14) Okidata Microline 192 printer. Believed to be functional. Plastic shipping film still on front panel. Dusty. #15) Radio Shack TRS-80 Line Printer VI. Somewhat grungy. Small bit of surface rust on rollers. #16) Radio Shack printer/plotter. Very good condition. Was working when last used. Stored with dust cover - nice & clean. With manual! #17) Telex 201 printer. Unknown condition. #18) Tracer 5 - 5 1/4" diskette duplicator. Comes with drive & output bin. Worked when last used. Very dusty. #19 & #20) Kontron "KLA" Logic analyzer (2 available) - they boot up and display a menu; other than that, I know nothing about them. Some documentation available. Data pods (?) included. Very heavy to ship (50+ lbs each). #21) TRS-80 Model 1 computer (non-functional; stopped working and was shelved). Nice & clean - includes monitor, 2 external floppy drives, and expansion interface. #22) 3 1/2" floppy duplicator (IBM 720Kb only). Auto-loads up to 100 diskettes. Was working when taken out of service. Includes spring-loaded output bin. Slightly dusty. #23) Box of miscellaneous PC/XT cards. Includes an assorment of 10-12 monochrome, CGA, EGA, & VGA video cards, several IBM base-band network cards and hub, 8-10 Arcnet cards, floppy controllers, hard drive controllers, 1200 bps modem cards, serial & Parallel adapters, many 4Mb/s token-ring cards, and other miscellaneous cards for a total of about Items Added on 11/3/99: #24) COBAR 3132 CRT Terminal with 2 keyboards. Worked when last used. Dusty. #25) Beehive MicroB1 Video Terminal. Was working when last used. #26) Hazeltine 1000 Video Terminal. Was working, but quit and was shelved. #27) IBM Wheelprinter E. Worked when last used. Very dusty. #28) Tektronix Type 532 Oscilloscope with Type CA Dual Trace Plug-in. On cart with wheels. Working, but needs TLC. #29) "ii200" Terminal. Not certain of the manufacturer. It's huge, with a monochrome display and a separate keyboard. #30) Tallgrass Technologies "TG-5025" external 24MB (yes, megabyte!) Hard Drive with integrated 60MB Tape Backup. Unknown condition; cosmetically good. Includes manual in original binder and IBM PC driver on original 5 1/4" diskette. Dusty! #31) IBM EGA Video Monitor. Condition uncertain, but believed to have been working when last used. #32) Tandy 1000 Computer System with Tandy color monitor and keyboard. Includes "Zuckerboard" memory expansion card. #33) Tandy 2000 Computer System with keyboard. Items Added on 11/5/99: #34) Compaq Deskpro 386s - complete system including monitor, keyboard, and user's manual, in mint condition! #35) Panasonic Hand-Held Computer (HHC) with printer/cassette interface. #35) Panasonic Hand-Held Computer (HHC) with printer/cassette interface. (another one) #36) Sencore PS 163 Oscilloscope. Schematic included. Works for 2-3 minutes, then trace fades away. Turn off for 5-10 minutes and it comes back. #37) Gorilla composite monitor. Unknown condition. #38) IBM PC Jr. infrared chicklet keyboard. Worked when last used. (4 available) #39) External Hayes-compatible 2400 baud modem (10 available) -Bill Richman (bill_r(a)inetnebr.com) http://incolor.inetnebr.com/bill_r - Home of the COSMAC Elf Microcomputer Simulator, Fun with Molten Metal, Orphaned Robots, and Technological Oddities.

25 years, 1 month

MOP bootable XXDP?

by cmcmanis＠freegate.com

Is there a diagnostic image that is bootable via MOP on a VAX that does diagnostics? I'm interested in testing some Q-bus boards of unknown integrity and this would seem to be one way to do it. I have the capability to write a bootable MOP image but before I write my own diagnostics I thought I'd see what else had been done. --Chuck

25 years, 1 month

Digital-PC350-D

by awcl＠awcoldstream.com

Hi All, I found Digital PC350-D workstation last weekend. This has a 5MB hard drive, six card slots that goes in (four in there) and 5.25 floppy. Key board is attached to the monitor. It started once and looks like vertical scan on monitor is gone. Any one has a manual for that beast?? Anil

25 years, 1 month

Differences Between CompacTape I, II, III

by jhfine＠idirect.com

Does anyone know what are the magnetic strength of the different media inside DLT type tapes? I am trying to understand what are the differences between a CompacTape CompacTape II CompacTape III also know as a DLT tape I can see any physical difference except for the color of the name. I assume that the tape media have different magnetic strengths. There was a recent discussion about the magnetic strength of 5 1/4" floppies - I remember that the DSDD were 300 o and the HD were 600 o. Do the different CompacTape media have the same sort of differences. I did look up the quantum.com web site and it seems to state that the CompacTape III are metal tapes. Sincerely yours, Jerome Fine

25 years, 1 month

VR241 vertical linearity problem

by danburrows＠mindspring.com

>> I have seen this on many VR241's when the HT supply is about ready to smoke. > >Which HT supply? The 25kV to the CRT, or the mains supply? If the former, >I think I might be able to track down flyback transformers for it. If the >latter, I've got problems... On the only one that I can recall ever taking a little time on the flyback had smoked. It had displayed those symptoms prior however. I have seen several show those symptoms and within a few days to at most 2 months they went up in smoke. >The PSU in this monitor is _horrible_. It's over-complex and looks almost That and what I can get them for is why I don't take the time. All I can remember for sure (10+ years since I opened one for other than minor adjustments.) is they were a real PITA design. > >Hmm... This is the only VR241 I've seen so far. In any case, my time is >free, I enjoy fixing things, etc... I understand. If I can ever remember to follow through on the 11's over in the London area there will be a few up for grabs if you want one. Dan

25 years, 1 month

Is this a modem?

by CLASSICCMP＠trailing-edge.com

>I have recently acquired what looks like a modem. It has the FCC >certification for a modem and has a jack for voice equipment 8 conductor >multi-line. But when connected to my VT-220 it does not act like a >modem. No response to Hayes commands won't even give me a error >message. To put it bluntly, not all modems are Hayes compatible. Especially if the modem is answer-only or for some specialized application. > It is a Line Miser DOV 640 by Gandalf Data Limited. The Gandalf equipment that I'm familiar with are communications multiplexers - it's likely (especially given the "Line Miser" name) that what you've got there is a synchronous modem intended to connect to a terminal multiplexer. It may even be intended for applications over leased lines (i.e. no dial tones). -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

25 years, 1 month

Is this a modem?

by charlesII＠nwonline.net

I have recently acquired what looks like a modem. It has the FCC certification for a modem and has a jack for voice equipment 8 conductor multi-line. But when connected to my VT-220 it does not act like a modem. No response to Hayes commands won't even give me a error message. It is a Line Miser DOV 640 by Gandalf Data Limited. Charles

25 years, 1 month

[Sol-20 Restoration: further adventures..]

by jimw＠agora.rdrop.com

On Mon, 8 Nov 1999, Charles Eicher wrote: > I've been periodically posting updates on my restoration project of my > old Processor Technology Sol-20. These usually coincide with pleas for > help. Now may be such a time. > I can't remember any commands, so I just try typing on the keyboard. No > response... > The LEDs are dead, or I'm not getting any power to the keyboard... > Darn it, the keyboard is attached, although there are two extremely > similar non-keyed molex connectors right next to each other, maybe > its connected wrong. I vaguely recall this being a problem once, about > 20 years ago. Hmm.. time to dive back into the construction manual > again. Keyboard goes to J3, the one nearest the center of the mainboard. Fortunately (by accident or design), connecting the keyboard to the wrong jack rarely causes any damage... > But I have a failed keyboard. Its a damn shame > because one of the strengths of the Sol was its professional quality > keyboard. > Hope its not anything internal, these PT keyboards were shipped > assembled from the factory, there's not anything you can do to repair > that I know of. And I was really good at fixing keyboards, so maybe I'll > figure it out. If anyone has suggestions or prior experience with this > sort of problem, please chip in your 2cents. Well... unless the keyboard has been vacuum sealed for the last 20 years, I can pretty much say with certainty that the contact pads in the mechanism have deterioriated. They can be repaired however. (I've done a lot of them) I have replacement contact kits available as well as keyboard rebuild services. Details are available on my web site on the 'Parts/Objects/Services' page... with the contacts gone, the keyboard will appear to be totally dead in most cases, although I have not seen too many serious logic failures on them. (YMMV) -jim --- jimw(a)computergarage.org || jimw(a)agora.rdrop.com The Computer Garage - http://www.computergarage.org Computer Garage Fax - (503) 646-0174

25 years, 1 month

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test-drb November 1999