An os with a menu. Assembly

[AlexZaim]

hello people. I am doing an "os" (small) that's mainly a menu. It just prints some strings and highlights some words when you pres 1,2 or 3. And by pressing enter while a option is selected, it has to do something.
The problem is that the program gets stuck in the beginning ... and i don't know where is the problem. Can't run a debug because it's a bootable bin file. Can some one please tell me where is the error?
I'm using linux+ nasm


[BITS 16]
jmp 07C0h:start
snd db 'Sound'
lsnd equ $-snd
abt db 'About'
labt equ $-abt
hlp db 'Help'
lhlp equ $-hlp

start:

is1:
call init
;print "sound"
mov ax,1300h
mov bh,0
mov bl,2
mov cx,lsnd
mov dx,0
push cs
pop es
mov bp,snd
int 10h
wait_:
mov ah,00h
int 16h

cmp ah,13
je make_sound

cmp ah,49
je is1

cmp ah,50
je is2

cmp ah,51
je is3

jmp wait_
is2:
call init
;print "About"
mov ax,1300h
mov bh,0
mov bl,2
mov cx,labt
mov dl,5
push cs
pop es
mov bp,abt
int 10h
jmp wait_

is3: jmp wait_

make_sound:
mov ax, 0E07h
xor bx, bx
int 10h
jmp wait_

init:
;print "sound"
mov ax,1300h
mov bh,0
mov bl,5
mov cx,lsnd
mov dx,0
push cs
pop es
mov bp,snd
int 10h
;print "About"
mov ax,1300h
mov bh,0
mov cx,labt
mov dl,5
push cs
pop es
mov bp,abt
int 10h
;print "Help"
mov ax,1300h
mov bh,0
mov cx,lhlp
mov dl,10
push cs
pop es
mov bp,hlp
int 10h
ret


times 510-($-$$) db 0
dw 0AA55h


The attachment shows the result of the execution. To me, it looks like he executes init then ;print "sound" then gets stuck. Maybe the function that i use to wait for a char isn't the right one?

[StunnerAlpha]

I don't know much about assembly but it will be easier to help you if you fixed your code tags. Use
if you are trying to make it color coded.

[Arndt]

I don't know much about assembly but it will be easier to help you if you fixed your code tags. Use [ php ] [ /php ] if you are trying to make it color coded.

I think you wanted to mention the php tags, not actually use them: they ended up as just space.

[rCXer]

Replace this


wait_:
mov ah,00h
int 16h


...with...


wait_:
;Check if key was pressed.
mov ah,1
int 16h ;Sets zf if a key wasn't pressed
jz KeyNotPressed
;Get it's value
mov ah,0
int 16h
jmp KeyPressed

KeyNotPressed:
xor ax,ax ;ax = 0
KeyPressed:


This is an old hack but it should work. First you use check if a key was pressed. If so then get it's value. If not then clear ax. There's a good ASM forum at http://www.asmcommunity.net/board/ . It even has an OS development section.