I have just started to learn assembly language and i am trying to print "hello world" in reverse order that means "dlrow olleh".the problem is i am getting only 1st letter as output and the order is still same no change at all!As a newbie many thing is unknown to me and i am doing lots of mistakes and i am unable to identify them due to lack of knowledge.So any answer with proper explanation will be appreciated!Here is my code:
name "hi" ; can anybody explain what is the use of this?
org 100h
jmp start ; jump over data declaration
msg db "1Hello, World!",0;last character
msg1 db "1"
Mov SI,13;lenght of the string
start:
Mov AL,msg[SI]
DEC SI
Mov ah ,0eh
int 10h
mov BL,msg1
CMP msg[SI],BL;comparing to get the end of the string
je stop
jmp start
stop:
mov ah, 0
int 16h ; wait for any key....
ret ; return to operating system.
i am getting output only "1" which is the first letter,but i expected to get the whole string in reverse order
jmp start ; jump over data declaratio
...
Mov SI,13;lenght of the string
start:
here is the problem - you're not initializing register si
you need to use something like:
jmp init ; jump over data declaratio
...
init:
Mov SI,13;lenght of the string
start: