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flat assembler > DOS > Problem outputting strings

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Yawgmoth



Joined: 20 Aug 2003
Posts: 37
My program is as follows:
Code:

mov dx,msg
mov ah,9
int 21h ;Prints message
mov ah,8
int 21h    ;Inputs character
mov dx, mg
mov ah,9
int 21h   ;Prints 2nd message
mov dl,al
mov ah,2
int 21h  ;Prints character entered
mov ah,4Ch
int 21h    ;Quits


msg db 'Enter a character $'
mg db 'You entered: $' 
    


Its output is a bunch of nontypable characters, followd by "Enter a character:". Then, after I enter a charcter, it prints out more gibberish.
Post 22 Aug 2003, 08:17
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keyoke



Joined: 18 Jun 2003
Posts: 56
Location: London
this mite work not the best way but it works.
Code:
org 100h
use16

mov dx,msg
mov ah,9
int 21h ;Prints message

mov ah,8
int 21h    ;Inputs character

push ax

mov dx, mg
mov ah,9
int 21h   ;Prints 2nd message

pop ax
mov dl,al
mov ah,2
int 21h  ;Prints character entered

mov ah,4Ch
int 21h    ;Quits


msg db 'Enter a character ',24h
mg  db 'You entered:',24h     

    
Post 22 Aug 2003, 08:59
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 7369
Location: Kraków, Poland
Or you can add the following lines at the beginning of your source:
Code:
format MZ
push cs
pop ds    

It depends whether you want to make EXE-style or COM-style program.
Post 23 Aug 2003, 23:01
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Yawgmoth



Joined: 20 Aug 2003
Posts: 37
Thanks for your help guys.
Post 23 Aug 2003, 23:22
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