8086 program to convert hexadecimal to ascii 
Edit
Murugan Andezuthu Dharmaratnam | 
01 September 2020 | 
11388
01 September 2020 | 11388
8086 assembly language program to convert from hex or decimal to ASCII. Ideally what you are trying to do is to display a number as a numeric character. In this program, we will display decimal 356 or hex 164 as a string 250
The first thing to do would be to run the program.
8086 code hex or decimal to ASCII
;----------------------------------------
;Program : clear screen
;FileName : hextoasc.asm
;I/P : number (365 decimal) in ax
;O/P : displays 365
;----------------------------------------
.model tiny
.code
org 100h
main proc near
mov ax,365d
mov si,offset message
mov cx,00h
mov bx,0ah
hexloop1:
mov dx,0
div bx
add dl,'0'
push dx
inc cx
cmp ax,0ah
jge hexloop1
add al,'0'
mov [si],al
hexloop2:
pop ax
inc si
mov [si],al
loop hexloop2
inc si
mov [si],'$'
mov ah,09h
mov dx,offset message
int 21h
mov ah,4ch
mov al,00
int 21h
endp
message db 10 dup(?)
end main
Output
I am using emu8086 to run the program. You can also run the program using tasm or masm
Generate executable using
tasm filename.asm
tlink /t filename
let's improve the code a little bit. The output will be the same. I am going to modify the code to display two numbers instead of one. For this the main thing, I have to do is to write a procedure for converting from hexadecimal to ASCII. Check the improved code below
Improved code
;----------------------------------------
;Program : clear screen
;FileName : hextoasc.asm
;I/P : number (365 decimal) in ax & number (969 decimal) in ax
;O/P : displays 365 & 969
;----------------------------------------
.model tiny
.code
org 100h
main proc near
mov ax,356d
mov si,offset message
call hexToAsc
mov ah,09h
mov dx,offset message
int 21h
mov ah,09h
mov dx,offset newline
int 21h
mov ax,969d
mov si,offset message
call hexToAsc
mov ah,09h
mov dx,offset message
int 21h
mov ah,4ch
mov al,00
int 21h
endp
newline db 0ah,0dh,'$'
message db 10 dup(?)
value dw 0
hexToAsc proc near ;AX input , si point result storage addres
mov cx,00h
mov bx,0ah
hexloop1:
mov dx,0
div bx
add dl,'0'
push dx
inc cx
cmp ax,0ah
jge hexloop1
add al,'0'
mov [si],al
hexloop2:
pop ax
inc si
mov [si],al
loop hexloop2
inc si
mov [si],'$'
ret
endp
end main
Output
