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Developer Shawn Sijnstra
Format Z-code
Interaction style
System Tandy TRS-80
System details TRS-80 Model 3 with 48K
Latest version 5 / August 2022
Status Stable
Uses interpreter
Multimedia support No multimedia
License GPL version 2
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M3ZVM is a Z-machine interpreter for the TRS-80 Model 3 with 48K. Tested on multiple DOS versions. It was written by Shawn Sijnstra, ported from M4ZVM.

M3ZVM supports Z-machine versions 1, 2, 3, 4, 5, 6*, 7, and 8 within memory limitations. z6 support is minimal, and approximates the text only screen into the standard model.

Licensed under GPL version 2.

Download binary and source from m3zvm on Gitlab

A Model 1 version (M1ZVM) is also available. It does not support accented characters, however, it does map to appropriate non-accented characters. m1zvm on Gitlab


  • Full use of 64x16 screen
  • Simulated reverse text highlighting, including when selected using colour changing codes
  • Accented characters (where available)
  • Command line switch to optionally enable the Tandy bit
  • Named game save and load
  • Timed input
  • z1-z5 games recommended
  • Use of 48K Memory has been tuned to allow z-code stories, now with up to 22K of Dynamic Memory to run (up from 18k)
  • Has a small LRU disk cache to reduce I/O
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