2.3 Print decimal number

;Write a program that prints to the screen the decimal value of a positive integer number (0 ÷ 2^(16)-1), stored into an appropriate variable

;IMPLEMENTATION
;Use an algorithm in two phases:
;-Decomposition of binary number into its digits by successive division for 10, saving the remainders and repeating operation on quotient until this is different from 0
;-Display of digits so obtained in reverse order than that initial, using the stack
;-N.B.: digits must be converted into ASCII characters before printing

;I declare that about division I do it by
;a number in 32bit (DD) because when
;I do PUSH or POP, it wants needs
;registers in 16 bit, not in 8 bit, and so
;is easier

.MODEL small
.STACK
.DATA
VAR DD 4325      ;numero da stampare
divisore DW 10 ;divisore
.CODE
.START
MOV AX,WORD PTR VAR
MOV DX,WORD PTR VAR+2
ciclo: DIV divisore ;This cycle converts my number
       ADD DX,'0' ;I remember that in DIV DX stores the remainder.
                  ;I sum +'0' so in DX I have the position of
                  ;stored number but in ASCII code
       PUSH DX    ;I store DX into STACK
       MOV DX,0
       INC BX     ;BX counts the digits (After I will need of this for printing cycle)
       CMP AX,0   ;If quotient is 0, then go out from cycle
       JNZ ciclo

MOV AH,2        ;OUTPUT
stampa:  POP DX ;In DX (so in DL) will be stored ASCII code of digits that I stored into stack
         INT 21h
         DEC BX
         JNZ stampa
.EXIT
END