test-drb

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101090 discussions

More tapes - This time all Tektronix 405x series

by mmcgraw74＠gmail.com

I was successfull at capturing all the files from a Tektronix 4051 Graphics T1 tape last weekend. Here is the link to a couple of photos of the process: Capturing Tektronix 4051 Graphics T1 tape files to laptop <https://drive.google.com/open?id=18hROXB28PD9Z_GYDNNSXGPK4Pv7GQD8w> First I replaced the disintegrated drive belt with one from a NOS 3M DC6250 cartridge. I used my 4051 to PC serial transfer program on my recently repaired and upgraded 4054A. I set the comm speed of the 4054 serial interface to the maximum 9600 baud, but as it is 7-bit, my program changes all 32 Tektronix control characters to "~X~" where X is the ASCII character corresponding to that control character. This way I don't lose any of the Tektronix 405x text formatting in the transfer. I was using ExtraPutty on the laptop to capture the program text strings, then copied the statements into Notepad++ and saved each file. I am also working on a Tektronix 4051/52/54 compatible GPIB MicroSD flash drive that will emulate the Tektronix 4924 tape drive - for all of us with these computers to use - since both the tapes and drives are very problematic after all these years. This flash drive contains an Arduino with my code - based on the GPIB flowcharts and info in a 4051 and 4052 GPIB manual. You will be able to use the existing 405x program statements with @Y for the drive GPIB address - since I don't know how to write a ROMPACK for any of the series :) I plan to organize the different captured tapes in directories on the flash - and that may mean using a non-4924 GPIB secondary address for that command. It also likely means I need to change any tape commands in each program to use the flash drive GPIB address. That's why I wanted to capture one of the Tektronix tapes with a menu - is to ensure I could get those files to work on my flash drive design. Monty McGraw

8 years, 2 months

Tektronix terminals, Tekxpress v8?

by carlojpisani＠gmail.com

hi I have a Tek XP400, and a Tek XP217. They are X11-terminals made in 1990s (thus unable to support GTK-v2) anyway, the XP217 runs with TekXpress v7, I have a copy for my tftp-boot server and the terminal is happy with it; whereas the XP400 says it needs a more recent software. does anyone happen to have TekXpress v8, or NCD bridge v4? let me know Thanks

8 years, 2 months

Website Relocation

by cube1＠charter.net

FYI, the service under which I have been hosting my website for many, many years is going away. So, webpages.charter.net/thecomputercollection Has been relocated to www.computercollection.net (The content is unchanged for now). This will also give me the freedom to eventually post lots more (and muc better) photos, put up my manual database and other databases at some point, and all sorts of cool things over time, but at present I am focused on my capture of the IBM 1410 Automated Logic Diagrams (ALDs). (BTW, the capture application (C#) is written, though still being debugged/improved, and I have already captured one volume of drawings, and am testing VHDL generation from the captured information.) JRJ

8 years, 2 months

DECServer 200/DL board?

by aek＠bitsavers.org

Is this a 200/DL (RS423 data lines only) board? https://www.ebay.com/itm/352381870034 A normal 200 would have two large IDC connectors on the pcb for serial I/O

8 years, 2 months

DEC VT 420 comm cable?

by w2hx＠w2hx.com

Hi friends, I just received a refurb'd VT-420 with green screen. I see that I need a special 6 pin/modular-type cable for the comm port. I located the adapter to get to DB25 ( https://www.ebay.com/itm/262041938994 ) but I need the interconnecting cable. Anyone know what it is called? Anyone have one for sale? 73 Eugene W2HX

8 years, 2 months

Assessing Plastibands for QIC Tension Band Replacement

by microtechdart＠gmail.com

If anyone is interested, I just published a few videos showing my testing of PlastiBands for QIC Tape Cartridge replacement. https://youtu.be/irOrR-ZYwjw and https://youtu.be/GVsYHLvCvZY A special thank you to CuriousMarc, Al Kossow, and Chuck(G) for their help, leadership and inspiration in this area! And my page dedicated to QIC Tension Bands... http://qicreader.blogspot.com/p/drive-belts.html As always, I welcome feedback, and hope this is of value to some here. Best always, -AJ -- Thanks, AJ Palmgren http://QICreader.com

8 years, 2 months

Did anyone on the list get these tapes?

by aek＠bitsavers.org

https://www.ebay.com/itm/1372243559202 basic.p11 syslod.p11 rdt.p11 all from mid 1971 original RSTS? hope the person who got these knows what they bought

8 years, 2 months

Lots of old DEC stuff

by sales＠elecplus.com

This guy is an eBay seller. I think he is a recycler. He has over 185,000 DEC items listed! Not affiliated with seller, etc. https://www.ebay.com/sch/m.html? <https://www.ebay.com/sch/m.html?&_nkw=DEC&_sacat=0> &_nkw=DEC&_sacat=0 Cindy Croxton --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

8 years, 2 months

HP 7980 tape drives

by sieler＠allegro.com

Hi, Anyone interested in three HP 7980 tape drives (9-track, 1600/6250 BPI, IIRC). One HP-IB interface, two SCSI interfaces. Rack mountable. Most likely local pickup only, in Redwood City. thanks, Stan

8 years, 2 months

68020 adapter

by carlojpisani＠gmail.com

hi guys I need something like this (1) anyone know where can I get one? (1) https://literature.cdn.keysight.com/litweb/pdf/64748-90901.pdf

8 years, 2 months

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