February 14, 2019 – TRS-80 Network Interface Card

Peter Cetinski has been working on a project that provides a simple, cheap, WiFi based, encrypted Internet communications via the TRS-80 by connecting to the Model III and Model 4 expansion port.

TRSNIC provides the foundational protocols required to implement modern network interactions on the TRS-80 microcomputer. The first such protocol provided is TCP/IP via an implementation of the Berekely Sockets API. TCP/IP is the dominant low level network protocol in use today. Many of today’s higher level network protocols like HTTP and FTP are implemented on top of TCP/IP. This means many modern networking applications and systems can be built upon the base TCP/IP support provided by trsnic.

You can read more about it a here and here.

February 12, 2019 – New TRS-80 Trash Talk Podcast

• The podcast TRS-80 Trash Talk # 28 is out now. In this episode, the Trash Talkers discuss how to buy and sell TRS-80s. Using their wealth of knowledge about the Tandy collector’s market they go in-depth on tips and techniques to use at live auctions, eBay, Craigslist and other marketplaces. Whether you’re buying, selling or doing both, you’re likely to learn quite a bit from their experience. You can download or listen at http://www.trs80trashtalk.com/.

January 24, 2019 – TRS-80 Add-Ons

Joe Rounceville has been designing and building peripherals for the Model I which he wants to share with everyone.

First is TRS80HDD. It is a way to run TRS-80 Model I disks from a SD card. Similar to a MISE but far less sophisticated. Schematics, instructions, and background can be found on his GitHub repository https://github.com/calphool/TRS80HDD. He advises that all parts are currently attainable at Mouser Electronics, the edge adapter from DigiKey, and the schematics can be sent to allpcb.com for creation of a PCB.

Second is TRS80GS. It is an expander for a TRS-80 Model that includes Texas Instruments video and audio chips to permit the Model I to do color graphics and have 6 tonal voices and 2 drum voices. It also supports Atari/Commodore joysticks. Schematics, instructions, and background can be found on his GitHub repository https://github.com/calphool/TRS80GS.

Thanks for keeping the TRS-80 alive, Joe!

January 10, 2019 – TRS-80 Manuals and Magazines – Free for local pickup or the cost of Packing/Shipping


A site visitor located in New Braunfels, Texas (central Texas, between Austin and San Antonio), has a bunch of magazines and original manuals to give away to a good home. Free for local pickup and he is willing to ship if you pay the cost of packing and shipping.

I will relay messages sent to me in the order received. First come first served.

Model 3 or 4 USB Keyboard

Kyle Wadsten has released his interface boards for the Model 3 and 4 that allow plugging in modern keyboards into the classic TRS-80 Model 3 & 4 machines.

There are two different board designs, one for USB keyboards and another for PS/2 input. 

What I find very intriguing and helpful is the ability to use the existing keyboard along with a modern keyboard at the same time.

Check out more at his order page or on the Facebook announcement page at the links below:

Kyle Wadsten’s NEWKEY/80 Arduino and custom board allow for a modern keyboards on your Model 3 & IV machines.

December 6, 2018 – New Magazine and Video

• This Week in TRS-80 – December 3rd
• View here.
  • Model III/4 contrast and brightness controls
  • Orchestra 90 for the Model III/4
  • Serial port for the Model I

• TRS8Bit – December 2018
• Download here.
  • TRS-Image
  • Travelling Mav – A review of TA 2018
  • Christmas Wishes
  • Mavs Workshop – Model I Power Supply
  • Obituary – Paul Allen
  • Pick 2
  • The Great Snail Race – One Liner
  • In Mav’s Workshop – Daisy Wheel Printers
  • Flower Power – BASIC Program by George Philips
  • In Mav’s Workshop – 2019 Developments
  • Software Review – TBA (The BASIC Answer)

September 7, 2018 – Updated TRS-80 Emulator

George and Peter Phillips have released trs80gp version 2.0.4.

It features:
* Model II emulation (and Model I, III and 4 as previously)
* Hires graphics support
* Floppy and Cassette emulation
* Copy/Paste
* Software Keyboard
* Automatic keyboard input
* Turbo Mode
* Source-level debugging and many other programming features

It runs on Windows 10, 8, 7 and maybe even XP and Vista. Runs well under Wine on Mac and Linux

Learn more and get it at http://48k.ca/trs80gp.html