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DECstation firmware archive?

by aek＠bitsavers.org

Are the firmware eproms for the DECstation archived anywhere?

8 years, 1 month

PT210 rs232 interface module

by dave＠661.org

I've had a fondness for the Radio Shack TRS-80 PT-210 portable printing terminal for a long time. Unfortunately, I've been unable to find an RS-232 interface module for it. A couple years ago I found a hardcopy of the service manual and used it to enter schematics and lay out a board for it. I scanned it and that's the one that's circulating on the web. The schematics and foil patterns in the service manual seem to be slightly wrong, so I've been on the lookout for one on eBay. I found one and won it just now and will use it to verify my design. I should have blank boards ready for sale in a month or two. If the other bidder is here, please email me with a screenshot showing that you bid. I'll send you a blank board free of charge when I get boards made. -- David Griffith dave at 661.org A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

8 years, 1 month

DECstation firmware archive?

by shadoooo＠gmail.com

Hello, maybe you have also a dump for a 4000-100A ? I have a motherboard which seems to have problems to Bcache or Pcache, and another one which I took as replacement, which has a very old version. I wonder if there's a way to dump the firmware in some way from the non-working one, then update the other... Of course I would avoid to desolder and resolder the flash Roms... Andrea

8 years, 1 month

ISO: Tape Seal Belts

by cclist＠sydex.com

I'm looking for a small quantity of 10.5" half-inch reel tape seal belts. These are the things that almost everybody with a large collection of tapes used to hang their half-inch tapes in racks made for the purpose. At one time, like tape write rings, these things were as common as cockroaches. Countless millions manufactured. I can't seem to find anyone who is sitting on a pile of these. Not even eBay. Mind you, I don't want the tapes themselves, just the belts. My issue is that I'm getting sent tapes without cases or belts more frequently. I suspect that in many situations, the belts have just been discarded, as they break and become brittle with age. I can remember discarding the hard plastic cases when refitting tapes for the auto-thread drives. We'd fill up dumpsters with the things. If someone is sitting a pile of the old cases, those would do in a pinch. Any ideas or leads welcome. Thanks, Chuck

8 years, 1 month

Sellam's VWoCW VCF XIII 10% Off Show Special!

by sellam.ismail＠gmail.com

Hello Folks! I have nothing to list for this week because I'm preparing for the big show, the VCF West XIII this coming weekend in Mountain View, California. I'll be bringing a lot of items, some already listed in my VWoCW and some new unlisted items. Examples of unlisted items I plan to bring along: MSI/88e 8088-based portable handheld computer with barcode scanning wand - $150 Integrated Computer Systems Portable Microprocessor Training Lab - $250 Zenith ZFL-184 SuperSport laptop with original Zenith soft shell carrying case - $70 Heathkit H88 - $275 Heathkit H89 - $250 Heathkit H19 - $150 Otrona Attache - $475 Zilog Z-80 Development System with external Zilog dual 8" drive subsystem - $2,000 I also have a series of Commodore PETs, as follows: 2001-8N 2001-16N 2001-32M 4016-12 4016-N 4032-12 4032-N 8032 8032-32B Note: I am only bringing along pre-sold PETs due to space constraints. If you're interested in any of the above items, or any item in my VWOCW, I'll give you a 10% off VCF special if you are prepared to pick up at the VCF. Remember, these are asking prices, I am open to reasonable offers! Please contact me *ASAP* if you're interested in taking advantage of the 10% off VCF special. Any items I bring that aren't pre-sold will go up for sale to the public at the VCF on Saturday morning. You can shop for more items here (as above, 10% off applies if you pre-arrange a sale): https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi… Thanks! Sellam

8 years, 1 month

CBM 2040/3040/4040/2031/2031LP loan needed

by brain＠jbrain.com

I am wondering if anyone relatively near Southeast Iowa might have a working 170kB 5.25" IEEE drive I can borrow for a few weeks. I know it's a long shot, and you'd think I'd have one sitting here, but all my boat anchor PET drives in my stack are 8050 units. I am hoping to add some functionality to ZoomFloppy to support these drives. I've tried approximating the 4040 with an MSD drive using the IEEE connection, with no success. While I am happy to buy a unit for a reasonable price, and I'll check online for items for sale, that would most likely involve shipping, and the PET drives are ill-suited to ship (financially, and for the health of the unit) It's not a show stopper, as VCF-MW is coming up soon, and I no doubt can borrow a unit from someone then or maybe even fix the code that weekend with a loaner unit.? Still, if I can create some success before hand, so much the better. Jim -- Jim Brain brain at jbrain.com www.jbrain.com

8 years, 1 month

Apologies

by sales＠elecplus.com

When I posted the Sun keyboards, I did not realize that 1) The checkout would not work correctly for TX residents, and 2) The search box was not working. My apologies for all those who tried to buy a keyboard, and could not. Please try again? Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sales at elecplus.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

8 years, 1 month

Australian Computer Museum - HELP

by geremin＠iprimus.com.au

The building housing the Australian Computer Museum is scheduled to be demolished in 2 weeks. Anyone in Sydney (or nearby) is invited to HELP preserve the collection by providing storage (for doco or big or small items) until we get a proper home. Please email INFO at ACMS.ORG.AU for more details, or call John 0427 10 20 60 in Australia. -- <b>John GEREMIN, Honorary Treasurer, 0427 10 20 60.</b> Australian Computer Museum Society Inc. PO Box 4005, Homebush, NSW, 2140. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

8 years, 1 month

CNC paper tape reader pinouts

by aek＠bitsavers.org

I was trying to find FANUC and Ricom PTR-230 pinouts today and stumbled on these https://www.mefi.cz/files/dokumentace/trans/simulacectecek/ FWIW, here are the pinouts for Sanyo-Denki 1402 https://www.mefi.cz/files/dokumentace/trans/snimanictecek/ktr48.pdf mentioned in http://www.classiccmp.org/pipermail/cctech/2015-May/005731.html

8 years, 1 month

Unknown Z80 CPU board and backplane ID anyone?

by binarydinosaurs＠gmail.com

Hi folks, A friend of mine in the UK is looking for any info on the following boards. The CPU board is marked ?VA 03-907023-00? and features a Z80 with 16K RAM and an 18.432MHz crystal. The backplane is also VA and has 11 132-pin slots that aren?t all identical implying usage for different cards in those locations. Voltages are +5/-5/+12V. Pics: http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30.jpg <http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30.jpg> http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30-1.jpg <http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30-1.jpg> http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30-2.jpg <http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30-2.jpg> http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30-3.jpg <http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30-3.jpg> My duckduckgo-fu has let me down. Cheers! -- adrian/witchy Owner of Binary Dinosaurs, the UK's biggest home computer collection? t: @binarydinosaurs f: facebook.com/binarydinosaurs w: www.binarydinosaurs.co.uk

8 years, 1 month

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