CODE BYE BEGIN, JMPs, AGAIN, ;CODE
CODE S= 2 chkPS,
    SI POPx, DI POPx, CH CH XORrr, CL [SI] MOVr[],
    CL [DI] CMPr[],
    IFZ, ( same size? )
        SI INCx, DI INCx, CLD, REPZ, CMPSB,
    THEN,
    PUSHZ,
;CODE
CODE CMP 2 chkPS,
    BX POPx, AX POPx, CX CX XORxx, AX BX CMPxx,
    IFNZ, ( < or > )
        CX INCx, IFC, ( < ) CX DECx, CX DECx, THEN,
    THEN,
    CX PUSHx,
;CODE