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