VTU-Microprocessor-and-Microcontroller-Lab-Programs/soft5.asm at master · Euno257/VTU-Microprocessor-and-Microcontroller-Lab-Programs · GitHub

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.MODEL SMALL
.STACK
.DATA
    N DB 4
    K DB 3
    RES DB 0
.CODE
      MOV AX,@DATA
      MOV DS,AX

      MOV AL,N
      MOV BL,K

      CALL NCK

      MOV AH,4CH
      INT 21H

  NCK PROC
    L0: CMP BL,0
        JNE L1
        ADD RES,1
        RET

    L1: CMP BL,AL
        JNE L2
        ADD RES,1
        RET

    L2: CMP BL,1
        JNE L3
        ADD RES,AL
        RET

    L3: DEC AL
        CMP BL,AL
        JNE L4
        INC AL
        ADD RES,AL
        RET

    L4: PUSH AX
        PUSH BX
        CALL NCK
        POP BX
        POP AX

        DEC BX

        PUSH AX
        PUSH BX
        CALL NCK
        POP BX
        POP AX

        RET
  NCK ENDP
END