Emulator core geared towards emulating ZZT and Super ZZT.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
asie adaa58f509 [web] port over SYS_TIMER_TIME change too 5 days ago
mingw [sdl] fix Windows 10 HiDPI, seed timer properly for RNG 2 months ago
res [psp] many fixes 2 months ago
src improve SYS_TIMER_TIME, blinking timing accuracy; fix blinking not updating the screen in OpenGL mode 6 days ago
tools [psp] initial port 2 months ago
web [web] port over SYS_TIMER_TIME change too 5 days ago
.gitignore [web] use npm/rollup/babel-based buildsuite, use modern ECMAScript features 1 month ago
COPYING first commit 11 months ago
Makefile [psp] initial port 2 months ago
Makefile.psp [psp] initial port 2 months ago
NOTICE update license headers 6 months ago
README.md first commit 11 months ago
zeta_curses.sh [curses] fix build 3 weeks ago
zeta_sdl.sh [sdl] add CHR/PAL/PLD loading support 3 weeks ago
zeta_sdl_mingw.sh [sdl] add CHR/PAL/PLD loading support 3 weeks ago
zeta_wasm.sh [web] add charset/palette loading 3 weeks ago



Zeta consists of:

  • an 8086/80186 emulation core, based on lunatic86,
  • an emulation environment geared specifically towards running ZZT and Super ZZT.

Currently, it has the following front-ends:

  • curses - incomplete, designed primarily for testing,
  • web - utilizes the WASM-compiled version of Zeta to allow using Zeta inside a web browser.

Directory structure

  • build/ - contains build output files,
  • src/ - contains the source code to the Zeta emulator, as well as the Curse

Implementing your own front-end

Refer to src/zzt.h. Functions marked USER_FUNCTION are accessible to you to interface with the emulator core, while functions marked IMPLEMENT_FUNCTION should be implemented.

Certain methods can be dummied out:

  • vfs_write - if you don’t need file writing,
  • speaker_on/speaker_off - if you don’t emulate the PC Speaker,
  • vfs_findfirst/vfs_findnext - if you don’t want file lookup to work.

There is, unfortunately, little documentation at this time.


The source code release of Zeta generally available under the terms of the GPLv3 license. For different licensing terms, please contact me directly.

The binary copy available here is for usage by the Museum of ZZT. It may not be used by any other entity, however it is used by the Museum with explicit permission.