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collapseos/apps/forth/dictionary.txt

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2020-03-08 04:13:15 +11:00
Stack notation: "<stack before> -- <stack after>". Rightmost is top of stack
(TOS). For example, in "a b -- c d", b is TOS before, d is TOS
after. "R:" means that the Return Stack is modified.
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: x ... ; -- Define a new word
. n -- Print n in its decimal form
@ a -- n Set n to value at address a
! n a -- Store n in address a
CREATE x -- Create cell named x
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EMIT c -- Spit char c to stdout
EXECUTE a -- Execute word at addr a
EXIT R:I -- Exit a colon definition
HERE -- a Push HERE's address
QUIT R:drop -- Return to interpreter promp immediately
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KEY -- c Get char c from stdin
INTERPRET -- Get a line from stdin, compile it in tmp memory,
then execute the compiled contents.