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by Peter Ekstrom

I am looking for a 15MB SQ300 disk cartridge in working condition. Anyone have one they wouldn't mind parting with? - Peter

4 months

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PDP-11/93 memory question

by Bill Gunshannon

I have an 11/93 with 2MB of memory onboard. I would like to kick it up to 4MB. I got some memory a while ago that was supposed to be PMI for it but it turned out to be UNIBUS and thus no help. I have some old fashioned QBUS memory module floating around. Will these work to add the missing 2MB or can the 11/93 only use PMI? Would be nice to wake this old box up again. I have this cool Decromancer just crying for somewhere to run. bill

4 months

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Compaq 9.1GB Ultra3 SCSI disks + Hot Plug Drive Trays

by Johan Helsingius

Anyone need Compaq hot plug SCSI drives and/or drive trays (part number 386536-001)? I have 16 of them spare. Julf

4 months

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VCF West 2025 Consignment, Aug 1 & 2, Mountain View, CA

by Jeffrey Brace

Get your items into the system! Print your labels ahead of time! Buy and sell treasures. More info here: https://vcfed.org/events/vintage-computer-festival-west/vcf-west-consignmen… Jeff Brace

4 months

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Endeco Cartridge Reader

by Steve Lewis

Is anyone familiar with the Type 1138SSM Cartridge Reader by Endeco, Inc (of Marion, MA) ? I recently got one, it appears to have an RS-232 interface at the back (and a power cable). I believe it is from around 1989. The cartridge slot has a connector that looks like something an NES might have. That is, it is not a tape, but it is much larger than CompactFlash. If anyone is familiar with these, I'm trying to find some cartridges and any kind of manual on how to interface with the thing. Thanks! Steve

4 months

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RK06/7 manual?

by Mark Kahrs

LSSM is looking for a copy of the RK06/07 Technical Description Manual, EK-RK067-TD-001. If anyone can give or loan it to us, we can scan it as well for public distribution. Thanks.

4 months

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Selling a Wang calculator

by pontus

Hi I know this isn't exactly the right group for this. But I have a fairly uncommon Wang calculator for sale and am not sure where to post about it. I've tried "Vintage Calculators Buy & Sell" on facebook without much luck. I see there is some calculator activity on discord, so I'll post about it there but I'd be happy for suggestion of other venues before I go the E-bay route. Below is the blurb I posted on facebook and here is a link to photos of the thing: https://drive.google.com/drive/folders/1gNdVSsNDxDL1Ukjh13-2ElJXRiWKQ5rx?us… FOR SALE: a Wang 362E electronic calculator in good condition, some scuff marks and light scratches but the inside is clean and looks to be complete. It comes with the 370K programming keyboard with nixie tube display in original dust cover, two card readers model 371 (with feet), four manuals in English and one in Swedish with handwritten notes. Also included is an IBM port-a-punch in box. I have decided not to test it in order to avoid causing any damage from improper handling or due to problems with ageing hardware. Located in Uppsala, Sweden. I will ship internationally but please allow some time for me to package it properly and figure out the best shipping options. I have shipped heavy computers and even CRTs with success, so I’m not without experience. Give me an offer :)

4 months

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9-Track Tape Extraction

by lukeparkerson1＠gmail.com

Hi all, I recently got my hands on what I believe is a 9-track tape, dated 1986, which has some old survey data stored on it from a university research project several decades ago. I'm hoping to be able to extract the information from the tape and convert it to a more modern data file accessible to the public, but I don't know very much about these tapes nor do I have 9-track tape equipment. I'm wondering if anyone who is more familiar with this technology can tell me it's even still possible to extract this data, and if so, is there's anyone here who can try and run the tape, or knows someone with a working 9-track tape drive? The frame is not in the best shape, but the tape is hopefully fine. Here's a photo: https://drive.google.com/file/d/1PrdBnIWUO4-317ZSwqvY-TD6dHr2CxC8/view?usp=… Thanks, Luke

4 months

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Re: Lee Felsenstein at VCF West August 1 at 4:30PM

by John Foust

At 04:22 PM 7/10/2025, you wrote: >Lee Felsenstein at VCF West Friday, August 1 at 4:30PM. >He will talk about the 50th Anniversary of The Homebrew Computer Club. Here's the line-up: https://vcfed.org/events/vintage-computer-festival-west/vcf-west-speakers/v… Not just Lee... but also Bob Marsh of Processor Tech, and Harry Garland of Cromenco, and Dan Sokol of Apple... And then for the Amiga 40th events, Dale, RJ, Trevor, Perry, Willie, Marco, Bill, Aaron, Brad, and me, too! And Sellam is there! - John

4 months

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Comstar System 4 Intel 4004 based Industrial Computer Documentation

by Christian Liendo

I was able to obtain a number of documents that pertain to the Comstar System 4. I spoke about this computer in the past but I have scanned some documentation that should help explain this unique computer People who have been interested in the Intel 4004 might find this interesting The Comstar System 4 Reference Manual is rather detailed on the computer itself and it's applications This is the Complete Comstar System 4 Reference Manual https://archive.org/details/comstar-system-4-reference-manual_202507 Warner & Swasey Reference Manual https://archive.org/details/warner-swasey-comstar-star-system-reference Comstar System 4 Programming Manual https://archive.org/details/comstar-system-4-programming-manual Comstar System 4 Tester Manual https://archive.org/details/wscomstar-system-4-test-manual Comstar System 4 CPU Module Schematic https://archive.org/details/comstar-system-4-cpumodule Comstar System 4 Serial Communications Schematic https://archive.org/details/comstar-system-4-serial-communications Comstar Star System 4 RAM Module Schematic https://archive.org/details/comstar-star-system-4-rammodversion Comstar Star System 4 HTL I/O DATA Module Schematic https://archive.org/details/comstar-star-system-4-iodatamodule Comstar Star System 4 PROM Module Schematic https://archive.org/details/comstar-star-system-4-prommodule Comstar Star System 4 PROM 1k 2k Module Schematic https://archive.org/details/comstar-star-system-4-prom-1k-2k-module Warner & Swasey Comstar System 4 Process Control Language https://archive.org/details/wscomstar-system-4-pclref-manual Warner & Swasey Computer Division Comstar System 4 Machine Language / Assembly Language Reference Manual https://archive.org/details/wscomstar-system-4-assembly-language Comstar System 4 Program Analyzer Reference Manual https://archive.org/details/comstar-system-4-reference-manual Computer History Museum's Archive of the Manual https://www.computerhistory.org/collections/catalog/102686568 Comstar Computer Systems Process Control Language Data Sheet https://archive.org/details/comstar-star-pclcompiler-data-sheet

4 months, 1 week

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