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Koichi Nakamura 15588df034 Add "@" and "!"
2020-12-29 15:23:38 +09:00
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helloworld.fs Hello World!!!!!! 2020-12-29 14:51:27 +09:00
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README.md Add "@" and "!" 2020-12-29 15:23:38 +09:00

README.md

PlanckForth: Bootstrapping Forth from Handwritten Binary

$ make

$ cat helloworld.fs | ./plank

Builtin Words

code name semantics
Q quit ( -- ) Exit the process
C cell ( -- n ) The size of Cells
h here ( -- addr ) The address of 'here' cell
l latest ( -- addr ) The address of 'latest' cell
k key ( -- n ) Read character
t type ( n -- ) Print character
j jump ( -- ) Unconditional branch.
J 0jump ( a -- ) Jump if a == 0.
f find ( c -- xt ) Get execution token of c
x execute ( xt -- ... ) Run the execution token
@ fetch ( addr -- a ) Load value from addr
! store ( a addr -- ) Store a to addr