8086 ASM exercise

name "sum maxi"


name "sum maxi"


Data     SEGMENT
     N  DB 4 DUP(?)
     SOMME  DW 3 DUP(?)
     MAXI  DW 3 DUP(?)
     VALSOM DB 3 DUP(?)
Data     ENDS

Code     SEGMENT
Start:
         MOV MAXI,100                  ;initialising the maximum
         MOV AX,0
         MOV BX,0
         MOV CX,0
Loop:    INC BX                ;increasing the integers counter
     MOV SOMME,AX               ;copying total to the SUM variable
         ADD AX,BX             ;adding this integer to the total
         CMP AX,MAXI               ;testing that the total amount is less or equal than maxi
         JLE Loop              ;if yes relooping
         DEC BX                ;if no decrease the numbers counter
         MOV AX,BX             ;move bx value to ax
         MOV N,AL                  ;saving the value to N
         MOV BX,10             ;preparing bx to divide
         DIV BX                    ;converting to decimal through DX
         ADD AX,48                 ;converting first digit to ascii
         ADD DX,48                 ;converting second digit to ascii
         MOV AH,AL                 ;moving first digit to AH
         MOV AL,DL                 ;moving second digit to AL
     MOV BX,offset N
         MOV [BX],AH
     MOV Byte ptr[BX+1],AL
     MOV Byte ptr[BX+2],20h
     MOV Byte ptr[BX+3],'$'
     MOV AX,SOMME
     MOV DX,0
         MOV BX,10              ;preparing bx to divide
         DIV BX                     ;converting to decimal through DX
         ADD AX,48                  ;converting first digit to ascii
         ADD DX,48                  ;converting second digit to ascii
         MOV AH,AL                  ;moving first digit to AH
         MOV AL,DL                  ;moving second digit to AL
     MOV BX,offset VALSOM
         MOV [BX],AH
     MOV Byte ptr[BX+1],AL
     MOV Byte ptr[BX+2],'$'
         MOV DX,offset N
         MOV AH,9
         INT 21h
         MOV DX,offset VALSOM
         MOV AH,9
         INT 21h
         MOV AX,4C00h
         INT 21h
Code     ENDS
         END  Start