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101090 discussions

WTD: Sun Voyager bag, BeBox front plastics + IO Card

by ethan＠757.org

Just two random pieces that I've been after for my collection: #1. Sun Voyager tote bag. The bag the computer goes into. #2. BeBox front plastic part, and the IO board for a BeBox. Have a dual 66Mhz that is case, PSU and mobo only. Would like to complete it. Thanks. -- Ethan O'Toole

9 years, 4 months

Seeking docs and schematic for Novation CAT modem

by COURYHOUSE＠aol.com

Joe - is that the direct connect one of the acoustic coupler? I any event SMECC would love a copy to for our files at the museum here. A side issue there was a Novation coupler - modem... a white one that the phone would sit on. with coupler cups to the side. Does anyone have any photos, advertising, etc etc... on this ? Thanks Ed # _www.smecc.org_ (http://www.smecc.org) In a message dated 9/13/2016 3:32:00 P.M. US Mountain Standard Time, fast79ta at yahoo.com writes: On 9/13/2016 1:58 PM, Ethan Dicks wrote: > Hi, All, > > Good seeing many of you at VCF-midwest. One of my scores was an > Atari-badged Novation CAT modem. Digging around for any docs, what > I'm mostly finding is lots of info about Novations Apple II products, > and scant mention with thumbnail pictures of the original CAT acoustic > coupler, that and dozens of sites copying the Wikipedia article. > > Anyone have any CAT info? I can reverse-engineer the schematic, but > if that's already been done, no reason for me to redocument the wheel. > I know it wants a 20VAC 400mA PSU, but I want to check how strict that > is (i.e., 18VAC @ 500mA or 24 VAC @ 350 mA, for example, which may be > easier to find than an unregulated 20VAC PSU). > > I would love to play with a CBM 8010 (since I have so many PETs) but I > do happen to have a couple of IEEE-488 to RS-232 devices, which will > work fine with this Atari 830/Novation CAT. > > -ethan I have the manual for a 103/212 smart cat modem. PN 490418-1/490521-1. Circa 1982 Is that what you need? Cheers, Joe

9 years, 4 months

HP 7970B/E Tape Unit manual available

by COURYHOUSE＠aol.com

Al - I have had them with 7 and with 9 but never lucky enough to get the dual headed one... yea... well worth putting online. do you have a link to any sales info on this? I used to hear of these but never laid eyes on one. Ed# In a message dated 9/22/2016 10:32:09 A.M. US Mountain Standard Time, aek at bitsavers.org writes: I'm trying to decide if I want to attempt getting my 7970 with a dual 7/9 track head running this year.

9 years, 4 months

Short test programs for pdp 11/34

by lyokoboy0＠gmail.com

Hello, made some progress with the pdp 11/34 I picked up a while back. Managed to repair the faulty power supply. I am in the process of trying to get a minimal configuration of the machine up and running. I am looking for a short program to key in to try and test the functionality of the cpu. Is there anywhere aside from the DEC manuals I could go to get a quick idea of how to operate the front panel? The manual is very in depth, however i am looking for sort of a quick start guide to get started pretty quickly. Any site with info on how to operate the front panel or some quick short programs i can key in would be of interest. I almost have the whole machine put back together on my desk, if all goes well and it runs as expected, i want to post back with some nice orderly pictures of it in the rack next to all the drives and the tape Drive. Progress overall with the whole machine has been slow going, the machine came with a heap of rsx 11 disk packs and tapes, however I am not to the point where i can use them just yet. Ive been kinda itching to see whats on those tapes, hopefully soon. --Devin

9 years, 4 months

Decoding kryoflux stream for HP9895A

by denise.devries＠flinders.edu.au

Based on the decoding suggested by Christian, I am plodding on but no success so far. I am not 100% sure that this is M2FM. >I'd still like to get a 9885/9895/7902 M2FM flux-transition disk >image, if anyone has one handy that they'd be willing to share. I will send the image stream to Eric Denise ________________________________ Dr Denise de Vries BCompInfSc, BSc(Hons), PhD, MACS Lecturer Computer Archaeology Laboratory School of Computer Science, Engineering and Mathematics Tonsley Building 1 Flinders University South Road Tonsley 5042 GPO Box 2100 Adelaide SA 5001 Ph: +61 8 8201 3639 | Fax: +61 8 8201 3602 Room T1 3.24 - Tonsley 1 Building www.flinders.edu.au/people/denise.devries CRICOS Provider Number: 00114A This email and any attachments may be confidential. If you are not the intended recipient, please inform the sender by reply email and delete all copies of this message.

9 years, 4 months

StorageTek 2920 9-track manual or instructions wanted

by axelsson＠acc.umu.se

Hi all, I have a Norsk Data ND110324 9-track drive which is a rebranded StorageTek 2920 with SCSI interface. So far I have only found a single manual for it, a quick guide card of 10 pages. Is there a manual out there which describes the unit a bit more in depth, like setting the SCSI address, diagnostic program codes, service, technical specifications and so on. So far I have got it to load a tape automatically and detect the recording density. Next step is to get it to talk to a linux-computer for imaging some old tapes. Thanks in advance, G?ran

9 years, 4 months

Tektronix 4051 repair.

by mattislind＠gmail.com

I took a look at the Tektronix 4051 that we got a few years back. After checking the PSU I turned it on and it seemed to start up fine. The machine responded well to the keypresses but it was hardly readable on the screen. Anyone that can give advice on what is wrong and how to deal with it. The text on the screen is very faint and many characters are scrambled as if the beam was moving when the points where plotted. When typing there is a flash of the beam which is then stored as the scrambled text. http://i.imgur.com/iQhQW67.jpg It probably reads "SYNTAX ERROR" something on the screen. My experience with DVST device is minimal. I used an old Philips storage oscilloscope many years ago but I don't remember the screen to be this dull. It seems like the storage system is not at full output. Unfortunately I am not getting a good understanding on how the DVST system works from reading the service manual. What is the purpose of the timers for cursor and character intensity? I am about to check all the voltages related to the display mentioned in the calibration section of the manual, but just in case someone directly recognize what kind of problem there is I would be much interested. /Mattis

9 years, 4 months

Short test programs for pdp 11/34

by jnc＠mercury.lcs.mit.edu

> From: Devin Davison > I am looking for a short program to key in to try and test the > functionality of the cpu. "BRANCH ." is always a good one - 0777. If that runs, much of the CPU is functional, and any errors found from there should be pretty easy to track down. > Is there anywhere aside from the DEC manuals I could go to get a quick > idea of how to operate the front panel? The manual is very in depth, > however i am looking for sort of a quick start guide to get started > pretty quickly. I'm assuming you have the 'Programmer's Front Console', the one with the 0-7 number keys, etc? If you have the simple one, instead, that uses a program in ROM to drive the console serial line, and most of the CPU has to be running to use that. The Programmer's Console is pretty simple. Key in the address, hit "LAD" (Load Address), and then you can read ("EXAM"), store ("DEP" - after entering the number you want deposit), or start the CPU running at that address (hold down "CNRTL" and "START"). Hitting "EXAM" multiple times examines successive locations - "DIS AD" will show you how far it has gotten. If the CPU is running ("RUN" light is on), pressing down "CNRTL" and "HLT/SS" will halt it. Load, deposit, etc don't work unless the CPU is halted. Noel

9 years, 4 months

Signetics PLS173 PLA fuse numbering?

by glen.slick＠gmail.com

A Signetics PLS173 PLA has a total of 2178 programmable fuses: (32 AND gates for logic terms plus 10 AND gates for control terms) times (24 true/complement inputs plus 20 true/complement inputs/outputs) = 1848 fuses (10 OR gates) times (32 AND gates logic term outputs) = 320 fuses 10 fuses for true/complement output selection For reference see the PLS173 FPLA Logic Diagram on page 5-70 (page 242 of the PDF) of the Signetics PLD Data Manual 1987 http://www.bitsavers.org/_dataBooks/1987_Signetics_pldData.pdf The question is for anyone here that knows: How are these fuses in the FPLA Logic Diagram numbered as they would be in a JEDEC fuse map file used to program a device, or when read back from a device? I can't find that information anywhere. If I read a PLS173 device into a JEDEC fuse map it should be trivial to generate the logic equations by hand if the fuse numbering is known, which is what I want to do.

9 years, 4 months

Free manuals...

by lbickley＠bickleywest.com

I'm cleaning out my library of manuals and books I no longer need and before I recycle these particular IBM manuals, I thought someone on cctalk might find them useful. They are free for the shipping and packaging cost - local pickup gets priority ;) 1) "RS/6000 Diagnostic Information for Multiple Bus Systems" (Version 5.100) 2) "RS/6000 Adapters, Devices and Cable Information for Multiple Bus Systems" 3) Large 8.5" X 11" "Systems Network Architecture, Reference Summary" (Updated to 2/4/86). Includes "IBM Synchronous Data Link Control General Information" manual. 4) 8.5" X 11: "Systems Network Architecture, Transaction Programmer's Reference Manual for LU Type 6.2" Cheers, Lyle -- 73 AF6WS Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"

9 years, 4 months

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