@neauoire anyone saying concurrent programming for CPUs is easy has not ever done it

@neauoire
I found the boot ROM for this multicore chip called the Parallax Propeller 2 https://github.com/speccy88/TAQOZ

@neauoire http://www.bradrodriguez.com/papers/mtasking.html there's this classic paper about the principles of Forth multitasking; go up a level for this author's other forth articles, they are all pretty good.

@neauoire i havent ever dug into using it myself, but arrayForth is made to run on forth machine chip that includes 144 cores
http://www.greenarraychips.com/home/documents/greg/DB013-221112-aFUSER.pdf
http://www.greenarraychips.com/home/documents/downindex.php

@neauoire Both MFORTH and Enforth implement a cooperative, dynamic (tasks are created at runtime) multitasker. MFORTH is in 8085 assembly, Enforth is in C. Might be helpful as a pair of sample implementations to go along with Brad's article...

https://github.com/malyn/MFORTH

https://github.com/malyn/Enforth

@neauoire There were a number of single processor cooperatively multitasking FORTHs back in the day, including F83. You can probably find code for that system on the ‘net.

I’ve also built some real multi core stuff in FORTH, which is “easy” only in the sense that FORTH words are usually reentrant so long as each process/task has its own stack (modulo a few details).

@neauoire lol I made a forth but it's explicitly not concurrent because safety. It has single threaded events that come from a work queue, including external/hardware/io events.

So much less fun, I know ;)

@neauoire Not online or practical, but maybe fun and slightly educational. I dug up code I made in 1986 using MacForth's cooperative multi-tasking to run 4 graphical sorts at once. Syntax core was:
: MY.TASK ( --)
...
ACTIVATE<
...
PAUSE
...
STOP> ;
Required a little extra cooperation to make sure the timing was fair for the visual comparison (not just based on number of PAUSE calls).