March 18, 2023 – NEWPRINT/Multi for TRS-80

The NEWPRINT/Multi is now available for purchase from Plaid Vest Software. It is a Virtual Wi-Fi printer with web-browser output for all TRS-80 models. Features Include:

  • NEWPRINT/Multi is a Wi-Fi-enabled “virtual” printer adapter that connects to your computer’s printer port and your local Wi-Fi network to send printer output to any device that supports a modern browser (iPad, Desktop PC, Mac, etc.).
  • The NEWPRINT web interface can show printer output as plain text, hexadecimal values, Print Shop graphics (Apple II), or Apple IIgs GS/OS graphics printing.
  • Text mode output does not (currently) understand special printer control codes used by most word processors (BOLD, multiple font sizes, Form Feed, etc.).
  • The NEWPRINT web interface is available from any browser on your local Wi-Fi network at newprint.local
  • NEWPRINT uses the standard HTML WebSocket API so you can even write your own web-based or desktop interface for displaying and processing NEWPRINT output.
  • Note: A power adapter (+5v DC) and printed User’s Manual are not included to keep prices low. See the PDF User’s Manual below for more information.

Visit for more details and for ordering.

March 18, 2023 – NEWKEY/80 “Ultra” for Model III/4

The NEWKEY/80 “Ultra” is now available for purchase from Plaid Vest Software. It is a USB keyboard and joystick adapter for the TRS-80 Model III/4. Features include:

  • Compatible with most standard USB keyboards
  • Also works with wireless 2.4Ghz USB keyboards (Note: Wireless keyboards need to be the “no drivers required” 2.4Ghz type)
  • Atari compatible 9-pin joystick port. (Note: A common 9-pin D-Sub or Atari joystick extension cable (not included) can be used in a similar fashion to route the joystick connector outside of the TRS-80 case)
  • Compact size. Mounts inside TRS80 case. (Note: Requires +5v and ground connections, a 4-pin Molex Disk Drive power splitter cable, and a plain 2-wire power connector; all of which are included)
  • Can work simultaneously with existing keyboard
  • Fast and accurate key response without keybounce or ghost characters
  • Native TRS-80 key repeat
  • Handles special keys independently (arrows, space, control, break, shift, @) for excellent compatibility
  • Works great with games and applications
  • Supports TRS80 control and multi-key sequences
  • Easily upgradable firmware to allow for enhancements and bug fixes

Visit for more details and for ordering.

March 8, 2023 – TRS80GP v2.4.11 Released

TRS80GP has been updated to v2.4.11. Release Notes:

  • Disk Viewer shows sectors in ID order instead of position.
  • Sound effects and stereo sound now implemented on macOS and Linux.
  • Preliminary Device Viewer added.
  • Improved command line parsing; model specifier always takes effect first.

Visit the TRS80GP Web Page at for the download and information. It can also be downloaded from the Emulator Page or right here!!!.

March 8, 2023 – “New” TRS-80 Software

Scott Taylor is posting the programs he wrote for the TRS-80 on Github. He writes:

This is a catalog of programs that I created for my first computer, a Radio Shack Model 1. I still have it and it still runs, although the cassette player it used for storage seized up some time ago. I am still coding for a living today!

I recently found this excellent emulator: Thank you George Phillips for bringing back the joy of those early days.

I have a few printouts of the source code for the games I created between 1978 and 1981. I have never shared them with anyone except a few of my friends. I hope there are a few veterans out there that can appreciate what could be done 45 years ago with 16KB of RAM, a million times less than the computer I am typing this into!

You can find them at

By the way, if you download from github be aware that you MUST follow his instructions. It is an ASCII file despite him putting a .CAS extension and line 30000 is too long for you to load and save it. It must be run from the FILE — RUN menu of TRS80GP.