Microprocessor LAB3

.model small
.stack 100h
.data
    input_string db 'We are DUET Students','$'
    show db 'No Upper Letter',10,13,'$'

.code
    main proc
        mov ax,@data;
        mov ds,ax;


        mov ah,09
       ;; lea dx,input_string
       ; mov di,offset input_string
       mov dx,offset input_string
       int 21h

       mov ah,02
       mov dl,10
       int 21h
       mov dl,13
       int 21h


       mov di,offset input_string

        Check_small:
            cmp [di],'$'
            je no_upper_letter

            cmp [di],97
            jge lower_case

            jmp check_space
            ;jmp Check_first_upper_case


        check_space:
            cmp [di],32
            je space
            jmp Check_first_upper_case

        space:
            inc di
            jmp check_small

        lower_case:
            inc di
            jmp Check_small



        Check_first_upper_case:
            cmp [di],'$'
            je last           ; if got "$" then go to last label and end

            cmp [di],90
            jle First_upper
            inc di
            jmp Check_first_upper_case

         again:
            cmp [di],'$'
            je last           ; if got "$" then go to last label and end

            cmp [di],90
            jle Last_upper_case
            inc di
            jmp again

         First_upper:
            cmp [di],65
            jge First_upper_case
            inc di
            jmp Check_first_upper_case


         First_upper_case:
            mov ah,02
            mov dl,[di]
            int 21h
            inc di
            jmp again;


        Last_upper_case:


            cmp [di],65
            jge print
            inc di

            jmp again

         print:

               mov bl,[di]
              ;mov ah,02
              ; int 21h
               inc di

               jmp again


          no_upper_letter:
              mov ah,02
              mov dl,10
              int 21h
              mov dl,13
              int 21h

              mov dx,offset show
              mov ah,09
              int 21h
              jmp last







       last:
            mov ah,02
            mov dl,10
            int 21h
            mov dl,13
            int 21h
            mov dl,bl
            int 21h
            mov ah,4ch
            int 21h


    main endp
    end main
    ret