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- CODE ROT ( a b c -- b c a )
- HL POP, ( C ) DE POP, ( B ) IY POP, ( A ) chkPS,
- DE PUSH, ( B ) HL PUSH, ( C ) IY PUSH, ( A )
- ;CODE
- CODE ROT> ( a b c -- c a b )
- HL POP, ( C ) DE POP, ( B ) IY POP, ( A ) chkPS,
- HL PUSH, ( C ) IY PUSH, ( A ) DE PUSH, ( B )
- ;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
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