hi all,
i am beginner with assembly language.
please help me out with small source code.
i want to convert decimal number into hexa.
i did like this:

.MODEL SMALL
.DATA
TEN DB 10
VAR1 DB 0
INDEC DB 0,1
M1 DB 'Enter Decimal : ','$'
M2 DB 13,10,'Hex Value: ','$'
.STACK
.CODE
.STARTUP
LEA DX,M1
MOV AH,9
INT 21H

MOV AH,1
INT 21H

SUB AL,0
MOV INDEC+1,AL
ADD AL,VAR1
MOV VAR1,AL

LEA DX,M2
MOV AH,9
INT 21H

MOV AL,INDEC
ADD AL,0
MOV DL,AL
MOV AH,2
INT 21H

MOV AL,INDEC+1
ADD AL,0
MOV DL,AL
MOV AH,2
INT 21H

mov ah, 2
mov dl, 'h'
int 21h

END

but this is not good idia

It's not working because it's not fasm code (tasm?).

remove .MODEL SMALL, .DATA, .STACK, .CODE, .STARTUP, END
move all your data to the end
use brackets for memory locations (e.g. 'mov [var1],al' instead of 'mov var1,al')
don't forget the 'org 100h'
add some exit code at the end
and why not use 'mov' instead of 'lea'?

N.B. This code converts only one digit.

All right

Exit code:





Not required but nice to have at beginning:



About converting dec to hex, you need 2 things:

- Parse DEC input
- Output as HEX

Check some of my examples