mirror of https://github.com/hsoft/collapseos.git
18 lines
417 B
Forth
18 lines
417 B
Forth
: H HERE @ ;
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: -^ SWAP - ;
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: ? @ . ;
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: +! SWAP OVER @ + SWAP ! ;
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: ALLOT HERE +! ;
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: VARIABLE CREATE 2 ALLOT ;
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: CONSTANT CREATE H ! DOES> @ ;
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: , H ! 2 ALLOT ;
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: C, H C! 1 ALLOT ;
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: IF ['] (fbr?) , H 0 C, ; IMMEDIATE
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: THEN DUP H -^ SWAP C! ; IMMEDIATE
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: ELSE ['] (fbr) , 0 C, DUP H -^ SWAP C! H 1 - ; IMMEDIATE
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: NOT IF 0 ELSE 1 THEN ;
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: = CMP NOT ;
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: < CMP 0 1 - = ;
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: > CMP 1 = ;
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: RECURSE R> R> 2 - >R >R EXIT ;
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