collapseos/blk/308

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2020-07-05 14:13:01 -04:00
CODE ROT ( a b c -- b c a )
HL POP, ( C ) DE POP, ( B ) BC POP, ( A ) chkPS,
DE PUSH, ( B ) HL PUSH, ( C ) BC PUSH, ( A )
;CODE
CODE DUP ( a -- a a )
HL POP, chkPS,
HL PUSH, HL PUSH,
;CODE
CODE ?DUP
HL POP, chkPS,
HL PUSH,
HLZ, IFNZ, HL PUSH, THEN,
;CODE
CODE DROP ( a -- )
HL POP,
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;CODE