test-drb

test-drb@ccmp.vtda.org

101090 discussions

by couryhouse＠aol.com

g11? for ana log? and g11a? for? digital and pulse we have a G11A? new in box unused? with cellophane surround available? respond off list

6 years, 7 months

Freebies (documentation) France and online

by sales＠elecplus.com

http://matthieu.benoit.free.fr/databooks.htm Looks like a fellow in France wants to give away/trade a lot of documentation. https://www.intel-vintage.info/ https://www.intel-vintage.info/intelotherresources.htm Note the Copyright says no copyright, take what you need freely. There is a LOT of interesting stuff on this site. http://www.ebyte.it/library/refs/SoftwareOnlineTexts.html http://gordonbell.azurewebsites.net/digital/decmuseum.htm more DEC stuff than I have ever seen together. Cindy Croxton

6 years, 7 months

Xref

by sales＠elecplus.com

Does anyone have a copy of this, or something similar? Prefer digital format, if possible. Jameco Part number 159791 $29.95 61140 SEMICONDUCTOR CROSS REFERENCE on CD-ROM Enhanced Version A complete guide to semiconductor replacement and substitutions from the makers of PHOTOFACT(R) service documentation. More than 490,000 part numbers, type numbers, and other identifying numbers listed. Includes part numbers for the United States, Europe, and the Far East. Covers all major types of semiconductors: bipolar transistors, FETs, diodes, rectifiers, ICs, SCRs, LEDs, modules, and thermal devices. Replacement for NTE, ECG, Radio Shack, and TCE - four cross references in one! Up-to-date list of original equipment manufacturers. The most comprehensive replacement data available for engineers, technicians, and all those who work with semiconductors. Minimum System Requirements: Windows 95(R) or higher and 60 MB of free disk space C 1998 Howard W. Sams. All Rights Reserved. http://www.hwsams.com Thanks! Cindy Croxton

6 years, 7 months

AED WINC08

by jsw＠ieee.org

On 11/11/19 12:27 AM, Eric Moore via cctech wrote: > Hello, I have a working AED WINC08 drive, which is a winchester drive > emulated to look like an RL02, along with the qbus controller card. > > https://archive.org/details/bitsavers_aedbrochurJan82_2107642/page/n1 > > The winchester drive itself is a fujitsu M2302B. One of the disks (it shows > up as 2 10MB volumes in RT-11) is having write issues. How can I find a > replacement disk drive in working order? The 2302b has a shugart compatible > interface, so should any shugart compatible 8" winchester drive work in the > aed winc08 rl02 emulator? > > What other options do I have to attach a winchester drive to an 11/03 for > use in rt-11? I have an RL02 I have never hooked up, do the disk packs hold > up well over time? How hard is it to clean and align an 8" winchester drive > to try and address the write issue? > > Thank you, > > -Eric In my (pre) historic use of products similar to this one, it was rare to swap the vendors drive with a completely different drive. The controllers, their electrical interfaces and recording formats were tightly coupled to the disk drives implemented. My suggestion would be to look for a QBus SCSI Controller like the Emulex UC07 or Dilog SQ739, though both are a bit pricey. These open up a large number of drives to use and later versions of RT11 support the MSCP protocol the controllers emulate. The use of the SCSI2SD drive emulator gives even more flexibility through the use of microSD cards. Google around for both. I have an pair of RL02 drives. I keep them clean and power them up for short periods regularly. You need to be alert to potential issues with electrolytic capacitors drying out and causing problems in the power supplies and circuit boards of all devices of from this era. See http://www.vcfed.org/forum/showthread.php?72247-Dismantle-an-RL02-pack for a recent discussion and pictures of some of the material in the packs decaying over time. Jerry

6 years, 7 months

Looking for documentation for VAX-11/730 ENKCC Diagnostic

by derschjo＠gmail.com

Hi all -- The VAX-11/730 we have running here at the museum has developed a fault that occurs only sporadically, usually days apart. Running the complete diagnostic suite for the better part of a week reveals this: SECT TST ERR EXP REC OTHER MSK MODULE ENKCC 33 08 000000FF 000000DF N/A FFFFFF00 M8391 M8728 Re-running only ENKCC, this error is repeatable (though it still takes a couple of days for it to occur). It helpfully points out the MCT (M8391) and memory boards (M8728) as possible causes; we have spare M8728s and I've swapped them around with no change in behavior. I have a spare M8391 in my own collection but it fails in a completely different way so that's not much help. I cannot find any real documentation for ENKCC so I don't know what TEST 33 is doing, nor what ERROR 8 indicates in this context, though it seems we're dropping a bit somewhere :). Anyone out there sitting on a pile of 11/730 documentation? Thanks as always! - Josh

6 years, 7 months

Printers in Manchester UK

by dave.g4ugm＠gmail.com

Folks, Any one got any interest in any dot-matrix printers. Got a Panasonic wide carriage, DEC narrow carriage, and a Tandy DMP200.. Dave Wade G4UGM & EA7KAE

6 years, 7 months

IBM Rigid Cleaning Tool 2200574

by Charles.West＠daystar.com

Chas and chon here at Daystar Television do you have or can you refer us finding

6 years, 7 months

Remex reader/punch PDP-11 interface board manuals on eBay

by steven＠malikoff.com

Just wondering if anyone on the list is going after these 1973 Remex manuals for the PDP-11 interface to their reader/punch units? https://www.ebay.com/itm/274092453978 https://www.ebay.com/itm/274092431915 I have two of the reader-only version of this board I bought relatively cheap off eBay some years ago and would be happy to trade or pay for a scanned copy if required. As I don't have a Remex reader/punch it would save me bidding up the price unnecessarily. Steve.

6 years, 7 months

New website has gone live

by cube1＠charter.net

After months of procrastination and work, my new website has gone live at: https://www.computercollection.net/ It is a nearly complete makeover. The home page also has a link to what my site used to look like. (Context: The website used to be at webpages.charter.net/thecomptuercollection . However Charter/Spectrum dropped support of subscriber home pages, so I had to move it to a hosting service, which I did last year - pretty much intact as it had been. That then opened up the opportunity for the website to have a lot more images and capabilities - the new website is the result. JRJ

6 years, 7 months

Anyone have docs/jumper settings for Tecmar "PC 500K/1MEG FLOPPY CONTROLLER" ISA card ?

by rescue＠hawkmountain.net

I have one of these, it has 2 jumper blocks, JPR2 (4 3 pin jumper 'settings'... looks to probably latch each of the 4 high or low) and JPR3 (12 on/off jumper positions). It also has a JPR1 which would be a 3 pin header and it is strapped by wire to position 1-2. Would love to figure out how the IO port and IRQs are configured. Card has no BIOS, so unlike a WD1002A-FOX there won't likely be any jumpers to set drive type. (I'm not having much luck with that card in a Tandy 2500 SX... but that's a completely different issue). Hopefully someone has or knows where there are some docs on the jumper settings. I'd imagine I could figure out some by probing which ISA pins various jumpers connect to..... but any jumper settings that control chips for decoding logic will be far more difficult to determine. Thanks, -- Curt

6 years, 7 months

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