在Assembly 8086中输出数字的ASCII字符

Question

I'm having problem outputting the calculated value in each step of Fibonacci sequence calculation, it outputs the respective ascii character of the calculated value like ☺ ☻ ♥ ♣ and how many times the sequence should run is depended on the user however it's limited to 47:

org 100h

ask_for_input db " Please enter a number[1-47]: ","$"
inputNumber DB 0  
conv DB 10D 
newL DB 0AH,"$"      


ask-again:        
    LEA DX, newL
    MOV AH,9H
    int 21H       

   ; Ask for user input       
   LEA DX, ask_For_input                       
   mov AH,9H
   int 21H             

   ; Gets user input
   ; First digit           
    MOV ah, 01H          
    int 21h

    SUB AL, 30H
    MUL conv   
    MOV inputNumber, AL

    ; Second Digit
    MOV AH, 01H 
    int 21h

    SUB AL, 30H
    add inputNumber, AL

    ; Checks if number is above 47D
    CMP inputNumber, 2FH
    JNLE ask-again  
    ; Checks if number is below 00D
    CMP inputNumber, 00H
    JLE ask-again    

; Squence loop Counter                      
MOV CH, 00H
MOV CL, inputNumber 

; Starting calculation
prev DB 01D   
current DB 1D            

Begin:
   space DB " ","$"
   LEA DX, space
   MOV AH,9H
   int 21H    

   ; Print Current Number                            
   LEA DX, current,"$" 
   mov AH,09H
   int 21H 

   ; Finds next number
   MOV BL, prev
   add current, BL 

   ; Advances prev
   MOV BL, current
   SUB BL, prev
   MOV prev, BL             

   Loop Begin

Answer 1

• Always place the data outside of the execution path. Now you've placed the data for prev , current , and space between the instructions. This will lead to failure.

   ask_for_input db " Please enter a number[1-47]: ","$" inputNumber DB 0 conv DB 10D newL DB 0AH,"$" prev DB 01D current DB 01D,"$" space DB " ","$" 

• In order to actually print the number you need to convert it to a character. Your current variable holds a binary value, not a character! This quick solution will display the single digit Fibonacci numbers only:

   ; Print Current Number add current, 30H LEA DX, current mov AH,09H int 21H sub current, 30H