Problem outputting strings

flat assembler
Message board for the users of flat assembler.

Index > DOS > Problem outputting strings

Author

Thread

Yawgmoth

Joined: 20 Aug 2003
Posts: 37

Yawgmoth 22 Aug 2003, 08:17

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.

22 Aug 2003, 08:17

keyoke

Joined: 18 Jun 2003
Posts: 56
Location: London

keyoke 22 Aug 2003, 08:59

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

22 Aug 2003, 08:59

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8359
Location: Kraków, Poland

Tomasz Grysztar 23 Aug 2003, 23:01

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.

23 Aug 2003, 23:01

Yawgmoth

Joined: 20 Aug 2003
Posts: 37

Yawgmoth 23 Aug 2003, 23:22

Thanks for your help guys.

23 Aug 2003, 23:22

< Last Thread | Next Thread >

Forum Rules:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum