xAce is an emulator for the Jupiter ACE computer.

The Jupiter ACE is the real outsider micro from the 1980s.

Instead of BASIC as the programming language, it had FORTH. It was
designed by two guys who had worked at Sinclair Research Ltd and were
responsible for the famous Sinclair ZX81 and ZX Spectrum.

See also <http://www.jupiter-ace.co.uk/emulators_unix.html>

Homepage:
https://github.com/lawrencewoodman/xAce
