Vintage computing Podcast for all types of retrocomputers
United States
92 episodes
since Feb, 2013


The Sinclair ZX80 and ZX81 Welcome to the Floppy Days Podcast with myself, Randy Kindig, and a whole host of vintage computers surrounding me, each one wanting their time in the limelight.  This will be part 2 of the 2-part series on the Sinclair ZX80 & 81 computer line. Once again, I will have one of the grand-daddy’s of vintage computer podcasting, Earl Evans, co-hosting with me as we complete the journey through one of the historically significant computers from across the pond.  We will be covering the normal topics from where we left off the last show, so we’ll be talking about peripherals, software, books & magazines, ads, emulators, Web sites and whatever else comes to mind. Before we do that, though, I do want to talk a bit about my new acquisitions and projects, let you know about upcoming shows so you can make your plans, and I might even have a little feedback. I want to thank Ian Bucknell for providing his thoughts and memories of the ZX81. Links Mentioned in the Show: Memories Ian Bucknell’s Frankensteined ZX81 and other retro-computers - https://imgur.com/a/dD4xq New Acquisitions/Projects REX for Tandy Model 100/102 - http://bitchin100.com/wiki/index.php?title=REX Atari ST RGB to SCART cable - https://www.ebay.com/itm/Atari-ST-High-Quality-RGB-Scart-Lead-Video-Cable-TV-AV-Lead-2mtr/250978089310 High Resolution VGA Cable for Atari ST - https://www.ebay.com/itm/142767407804 Sofia Atari 8-bit video board - http://atariage.com/forums/topic/274004-sophia-revc-dvi-board/ Upcoming Shows VCF West - https://vcfed.org/wp/festivals/vintage-computer-festival-west/ , August 4-5, 2018 - Computer History Museum, Mountain View, CA Commodore Vegas Expo v14 - http://www.commodore.ca/forum/viewtopic.php?f=6&t=12676 , Aug. 11-12, 2018, Las Vegas, NV VCF Midwest - http://www.vcfmw.org/ - September 15-16, 2018, Elk Grove Village, IL Portland Retro Gaming Expo - http://www.retrogamingexpo.com/ - Oregon Convention Center on October 19-21, 2018 Tandy Assembly - http://www.tandyassembly.com , Nov. 10-11, Springfield, OH TI International World’s Faire - http://ctiug.sdf.org/ - Nov. 10, Evanston Public Library, Evanston, IL World of Commodore - https://www.tpug.ca/category/woc/ - December, Toronto, Ontario, Canada Peripherals and Expansion list of ZX81 Peripherals in the Centre for Computing History collection - http://www.computinghistory.org.uk/cgi/archive.pl?type=Peripherals&platform=ZX81 Early Sinclair ZX81 peripheral adverts - http://www.retrogamescollector.com/early-sinclair-zx81-peripheral-adverts/ Cheetah 32K RAM Expansion Memopak 16K Memopak 64K Memotech 48k Ram Expansion ZX Panda 16K Expandable RAM for ZX81 Fuller FD System for ZX80/81 Mapsoft Keyboard for ZX81 Memotech ZX81 Keyboard and Buffer ZX81 Keyboard Upgrade ZX81 Push-Button Keyboard ZX81 I/O Board Sinclair ZX81 QS-Sound ZX81 QS-Mother Board ZON X-81 BASICARE Micro Systems Magazines and Newsletters Syntax ZX80 - https://archive.org/details/syntaxvol1no2 ZX Computing - http://magazinesfromthepast.wikia.com/wiki/ZX_Computing Sync - Jan/Feb ‘81 - https://archive.org/details/syncmagazine Sinclair Programs Sinclair User - http://magazinesfromthepast.wikia.com/wiki/Sinclair_User Timex/Sinclair User - https://archive.org/details/TimexSinclairUser ZX91 Newsletter - http://zx81.de/andre/zx91/_frame_e.htm Books Mastering machine code on your ZX81 Paperback – 1982 by Toni Baker - https://www.amazon.com/Mastering-machine-code-your-ZX81/dp/0835942619/ The ZX-81 Pocket Book by Trevor Toms - https://www.amazon.com/ZX81-pocket-book-Trevor-Toms/dp/0835995259/ 49 Explosive Games for the ZX-81 by Tim Hartnell - https://www.amazon.com/explosive-games-ZX-81-Reward-book/dp/0835920860/ Making the Most of Your ZX-81 by Tim Hartnell - https://www.amazon.com/Making-Most-Your-Zx-81-Hartnell/dp/0835941884/ Timex Ts1000 Computer/Sinclair Zx-81 Computer (Sams Computerfacts) Paperback – November, 1986 - https://www.amazon.com/Timex-Ts1000-Computer-Sinclair-Computerfacts/dp/0672089696/ Ins and Outs of the Timex T.S.1000/Z. X. 81 Paperback – April, 1983 by Don Thomasson (Author) - https://www.amazon.com/Ins-Outs-Timex-T-S-1000-Z/dp/0861611187/ Fifty 1K/2K Games for the Zx 81 and Timex Sinclair 1000 by Alastair; Walsh, James and Holmes, Paul Gourlay (Author) - https://www.amazon.com/Fifty-Games-Timex-Sinclair-1000/dp/0835919781/ Understanding Your Z. X. 81 ROM Paperback – December, 1981 by Ian Logan - https://www.amazon.com/Understanding-Your-Z-X-ROM/dp/0861611039/ Aerospace and Communication Satellite Applications of the Z. X. 81/Spectrum Computers: Programs for Cruise Missile Trajectory Simulation and Communication Satellites Orbital Position, with GraphicsPaperback – Import, November 1, 1983 by H.S. Bluston (Author) - https://www.amazon.com/Aerospace-Communication-Satellite-Applications-Computers/dp/0907350089/ Turing Criterion: Machine Intelligent Programs for the 16K Z. X. 81 Paperback – November, 1982 by Dilwyn Jones (Author), etc. (Author) - https://www.amazon.com/Turing-Criterion-Machine-Intelligent-Programs/dp/0907563201/ Software 3D Monster Maze ZX81 Software Catalogs - http://www.retrogamescollector.com/sinclair-zx81-software-catalogues/ 1K ZX Chess - http://www.zx81stuff.org.uk/zx81/tape/1KZXChess Revival Studios (modern games) - http://www.revival-studios.com/sinclair.php ZX-80 Programs site - http://zx80programs.yolasite.com/ TOSEC at archive.org - https://archive.org/details/Sinclair_ZX81_TOSEC_2012_04_23 This webiste has a very good start on creating a definitive list of ZX81 software - http://www.zx81stuff.org.uk/ ZX81 Download Page - http://www.zx81.nl/dload/ User Groups and Shows ZX-TEAM: THE active user group for the legendary Sinclair ZX81- http://www.zx81.de/zxcms/ , next international meeting March 29-31, 2019 Modern Upgrades The Tynemouth Software Minstrel ZX80 clone - https://www.tindie.com/products/tynemouthsw/minstrel-zx80-clone/ Andy Rea’s ULA Replacement - https://www.sinclairzxworld.com/viewtopic.php?f=8&t=2928 ZX-TEAM mod for 16 or 32K on the ZX81 motherboard - http://www.zx81.de/english/_frame_e.htm ZXMore Complete Z80 System - https://www.sinclairzxworld.com/viewtopic.php?t=1696 ZXBlast - https://www.sellmyretro.com/offer/details/zxblast-512k-(ready-to-use)--_-ram-pack-and-usb-flash-drive-support-22781 ZX8-CCB for new and modern TVs like Plasma and LCD. - https://www.sellmyretro.com/offer/details/zx8-_ccb--_-video-output-for-zx81-3712 Chroma81 Adds Color to ZX81 - http://www.fruitcake.plus.com/Sinclair/ZX81/Chroma/ChromaInterface.htm ZXpand, a combined SD card interface, 32K configurable memory expansion, and optional joystick port and AY sound interface Emulation XTender - https://web.archive.org/web/20141207130136/http://www.delhez.demon.nl/   EightyOne Current - https://sourceforge.net/projects/eightyone-sinclair-emulator/ Original - https://web.archive.org/web/20180320020429/http://www.chuntey.com ZEsarUX - https://github.com/chernandezba/zesarux/releases NO$Z81 - http://problemkaputt.de/zx.htm SZ81 Main site: http://sz81.sourceforge.net macOS - https://drive.google.com/file/d/0B8RnV5G0TZFZRTlJbzdWemtkRm8/view Spud81 - https://onedrive.live.com/?authkey=%21AM71r6k8oPHndJs&cid=4A4ECC65657FDA53&id=4A4ECC65657FDA53%21357&parId=root&action=locate Clock Signal - https://github.com/TomHarte/CLK/releases JTYone - http://www.zx81stuff.org.uk/zx81/jtyone.html jszeddy - http://rullf2.xs4all.nl/jszeddy/jszeddy.html iOS ZX81 - https://zx81-ios.weebly.com Other links mentioned by Kevin: http://www.fruitcake.plus.com/Sinclair/ZX81/Chroma/ChromaInterface_Software_ZXFileConverter.htm http://problemkaputt.de/zxdocs.txt Community Facebook Keeping the Sinclair ZX80 and ZX81 Alive - https://www.facebook.com/groups/133345396703664/ Forums https://www.sinclairzxworld.com/index.php http://forum.tlienhard.com/phpBB3/viewforum.php?f=2 (German) User Groups Timex Sinclair North American User Group - http://ncmedals.com/tsnug/index.html Current Web Sites Article in Kilobaud Microcomputing, Dec. 1980 - https://archive.org/stream/kilobaudmagazine-1980-12/Kilobaud_Microcomputing_1980_December#page/n169/mode/1up ZX-80 at Planet Sinclair - http://rk.nvg.ntnu.no/sinclair/computers/zx80/zx80.htm ZX-80 at OldComputers.net - http://oldcomputers.net/zx80.html Paul Farrow’s ZX-80 Software - http://www.fruitcake.plus.com/Sinclair/ZX80/ ZX-80 at old-computers.com - http://www.old-computers.com/museum/computer.asp?c=262 Sinclair ZX81 FAQ - https://www.landley.net/history/mirror/8bits/zx81faq.html http://www.zx81stuff.org.uk/index.html The Sinclair ZX81: As seen in Tezza's classic computer collection - https://www.youtube.com/watch?v=7KsuTg1qHIE Sell My Retro - https://www.sellmyretro.com/category/retro-computers/sinclair/sinclair-zx81 - has many ZX80/81 upgrades/replacement parts ZX81 Forever - http://zx81.de/andre/ ZX81 The Archive - http://www.imarshall.karoo.net/zx81/ References https://en.wikipedia.org/wiki/ZX80 https://en.wikipedia.org/wiki/ZX81
Disclaimer: The podcast and artwork embedded on this page are from Randall Kindig, which is the property of its owner and not affiliated with or endorsed by Listen Notes, Inc.


Why to claim podcasts?

If you are a podcaster, the best way to manage your podcasts on Listen Notes is by claiming your Listen Notes podcast pages. It is a great, free way to engage the podcast community and increase the visibility of your podcasts.
After claiming your Listen Notes podcast pages, you will be able to:
Manually refresh the RSS feed to sync up
Get a verified badge (
) alongside with your podcast name on Listen Notes
Post classified ads for sponsorship, guests, co-hosts, cross-promotion...
Coming soon:
Self-service promotion on Listen Notes
Use speech-to-text techniques to transcribe your show and edit transcripts
Improve the presence of your podcasts, e.g., self served podcaster interview...
Respond to listener comments on Listen Notes
Track your podcast stats on Listen Notes, e.g., listens, page views...
Manage episodes


Thank you for helping to keep the podcast database up to date.