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sdltrs is a Radio Shack TRS-80 Model I/III/4/4P emulator for Macintosh OSX, Windows, and Linux. It has been ported from Tim Mann's excellent X-Windows UNIX emulator xtrs. Instead of using the X-Window system for graphics, it uses the portable SDL library.


  • Windows and Mac OS X support.
  • Fullscreen display
  • Text based GUI on Windows and Linux, and in Fullscreen mode on the Macintosh.
  • Configuration files.
  • Disk LED Indicators on screen.
  • Creation of Disk images inside of the program.
  • Saving and loading of disk sets.
  • Saving and loading of emualtor state.
  • Copy and Paste of text to/from host and emulator.
  • USB Joystick support.
  • Graphical interface, include Media management with graphical representation of the disk drives and cassette
  • Printer emulation of Epson FX-80 and CGP-115 Plotter/Printer, with output to PDF files.
  • Debugger in seperate program window.

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