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Vezza logo 1b.jpg
Links Home page Download
Developer Shawn Sijnstra
Format Z-code
Interaction style
Systems CP/M, Amstrad CPC, Amstrad PCW, Apple II, Atari 400/800, MSX, MSX2, Sinclair ZX Spectrum, Tandy TRS-80, Other
System details Requires minimum z80 and CP/M 2.2 or CP/M 3. Current builds support VT-52, ADM-3a, HGT, VT-100, VT-100 with ANSI colour, and Soroc 120 terminal emulations. Various platform builds tested and available. Atari requires FujiNet/DT80. Supported platforms not listed include MicroBee and SAMCoupe.
Latest version Pre-release / 9 Dec 2022
Status Beta
Uses interpreter
Multimedia support No multimedia
License GPL 2
Notes Note that this interpreter cannot simply be downloaded and run to play game files.
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Vezza is a Z-machine interpreter for CP/M version 3 and above, requiring a z80 CPU minimum. Tested on multiple hardware versions. It was written by Shawn Sijnstra, ported from M3ZVM and M1ZVM.

Vezza supports Z-machine versions 1, 2, 3, 4, 5, 6*, 7, and 8 within memory limitations. z6 support is limited to non-graphics and has many workarounds to reduce to the standard screen model.

Licensed under GPL version 2.

Download binaries, along with a fuller list of features and limitations from Vezza on Gitlab


  • Full use of screen width where possible
  • Use of highlighting or substitutes where possible
  • Accented characters are translated
  • Command line switch to optionally enable the Tandy bit
  • Named game save and load
  • Timed input (limited to 1 second resolution)
  • z1-z5 games recommended
  • Has a small LRU disk cache to reduce I/O
  • Allows game with up to 22k Dynmem to run (up to 37K in banked CP/M versions so even Trinity will run)


  • Release is beta so expecting some issues/unexplained behaviour
  • Limited terminal compatibility today: VT-52, HGT, ADM-3a and Soroc 120 versions available
  • Timer not supported on Atari/FujiNet, SAMCoupe, RunCPM
  • See web site for more details
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