Latest state of the native FORTH emulation (aka microcode 4), with examples of peripheral handling, simple BRANCH routines, and the musical tone system.
Acknowledgements to Richard W.M. Jones for placing the JonesFORTH listings and tutorial in the public domain. His annexia.org website is no longer available, but Jeremy Rose has kindly provided a mirror Github site: https://github.com/nornagon/jonesforth
Full PlasMa playlist:
https://youtube.com/playlist?list=PLI2uGjCObnyTZ5FLeW3wmIPQseOdsQ1p6
More details, including the Build Guide document and other downloads for the PlasMaSim simulator and Plasm assembler, at http://www.philizound.co.uk/plasma/plasma.html