Testing for multiple core support.

~~~
:core #8000 io:scan-for io:invoke ;

:core:init  (n-)  #0 core ;
:core:start (an-) #1 core ;
:core:pause (n-)  #2 core ;
:core:pause-current #3 core ;
:core:resume (n-) #4 core ;
:core:rr    (n-v) #5 core ;
:core:wr    (vn-) #6 core ;
~~~

~~~
'Done var

:a [ @Done #100000 gt? [ core:pause-current ] if &Done v:inc $a c:put ] forever ;
:b [ $b c:put ] forever ;
:c [ $c c:put ] forever ;
:d [ @Done #50000 gt? [ core:pause-current ] if $d c:put ] forever ;

#1 core:init  &a #1 core:start
#2 core:init  &b #2 core:start
#3 core:init  &c #3 core:start
#4 core:init  &d #4 core:start

core:pause-current
~~~