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@@ -5,22 +5,28 @@ |
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: , H ! 2 ALLOT ; |
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: C, H C! 1 ALLOT ; |
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: BEGIN H ; IMMEDIATE |
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: AGAIN ['] (bbr) , H -^ C, ; IMMEDIATE |
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: COMPILE ' ['] LITN EXECUTE ['] , , ; IMMEDIATE |
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: AGAIN COMPILE (bbr) H -^ C, ; IMMEDIATE |
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: NOT 1 SWAP SKIP? EXIT 0 * ; |
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: ( BEGIN LITS ) WORD SCMP NOT SKIP? AGAIN ; IMMEDIATE |
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( Hello, hello, krkrkrkr... do you hear me? |
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Ah, voice at last! Some lines above need comments |
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BTW: Forth lines limited to 64 cols because of default |
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input buffer size in Collapse OS |
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NOT: a bit convulted because we don't have IF yet |
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IF true, skip following (fbr). Also, push br cell ref H, |
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to PS ) |
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: IF ['] SKIP? , ['] (fbr) , H 1 ALLOT ; IMMEDIATE |
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COMPILE; Tough one. Get addr of caller word (example above |
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(bbr)) and then call LITN on it. However, LITN is an |
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immediate and has to be indirectly executed. Then, write |
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a reference to "," so that this word is written to HERE. |
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NOT: a bit convulted because we don't have IF yet ) |
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: IF COMPILE SKIP? COMPILE (fbr) H 1 ALLOT ; IMMEDIATE |
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( Subtract TOS from H to get offset to write to IF or ELSE's |
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br cell ) |
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: THEN DUP H -^ SWAP C! ; IMMEDIATE |
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( write (fbr) addr, allot, then same as THEN ) |
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: ELSE ['] (fbr) , 1 ALLOT DUP H -^ SWAP C! H 1 - ; IMMEDIATE |
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: ELSE |
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COMPILE (fbr) 1 ALLOT DUP H -^ SWAP C! H 1 - ; IMMEDIATE |
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: ? @ . ; |
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: VARIABLE CREATE 2 ALLOT ; |
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: CONSTANT CREATE H ! DOES> @ ; |
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