CODE S=
    DE POPqq, HL POPqq, chkPS,
    LDA(DE),
    (HL) CPr,
    IFZ, ( same size? )
        B A LDrr, ( loop A times )
        BEGIN,
            HL INCss, DE INCss,
            LDA(DE),
            (HL) CPr,
            JRNZ, BREAK, ( not equal? break early. NZ is set. )
        DJNZ, AGAIN,
    THEN,
    PUSHZ,
;CODE