Trying to make a program that stores your name and Password

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Vertex78

Joined: 22 Feb 2004
Posts: 12

Vertex78 22 Feb 2004, 18:39

I am trying to make a simple program that stores your name and password. So far it works fine up till it tries to display the name you typed back onto the screen. Here's my code:

Code:

org 256

mov ah,9
mov dx,greeting ;enter your name

int 21h
mov dx,buffer ;buffer for keyboard
mov [name],dx  ; stores name
mov ah,0Ah
int 21h

mov dx,greeting2 ;enter your password
mov ah,9
int 21h

mov dx,buffer ;buffer for keyboard

mov [password],dx  ;stores password
mov ah,0Ah
int 21h

mov dx,greeting3  ;re-enter password
mov ah,9
int 21h

mov dx,buffer ;buffer for keyboard
mov ah,0Ah
int 21h

mov dx,greeting4  ; welcome message
mov ah,9
int 21h

mov dx,[name+24h]
mov ah,9
int 21h
int 20h

newline db 10,13,'',24h
msg db 10,13,'testline',24h
greeting db 'What is your name?',24h
greeting2 db 10,13,'Choose a Password:',24h
greeting3 db 10,13,'Enter your password for verification:',24h
greeting4 db 10,13,'Welcome',24h
name dw 80h,0
     rw 80h
password dw 80h,0
         rw 80h
buffer db 80h,0
       rb 80h

thanks for the help

22 Feb 2004, 18:39

Tommy

Joined: 17 Jun 2003
Posts: 489
Location: Norway

Tommy 22 Feb 2004, 18:53

Here's some procedures to use (click "Simple DOS I/O procedures"): http://www.microasm.net/prog/index.php Wink

22 Feb 2004, 18:53

Bitdog

Joined: 18 Jan 2004
Posts: 97

Bitdog 22 Feb 2004, 18:58

Do a www.google.com search for Ralf Browns interrupt list and download
all the files INTER A-Z (P?) .ZIP
and look up INT 21h function AH=0x0A
the buffered input requires DS:DX point to a buffer that starts with
the first byte being the buffers max size, then INT 21h AH=10
loads your key presses into the DS:DX buffer,
at that point it is up to you the programmer to do something with it,
you are saveing the address of the buffer,
then over writting the buffer with more input.

mov dx,buffer ;buffer for keyboard ;---THIS LOADS DX with the adr of buffer
mov [password],dx ;stores password ; THIS moves the buff adr offset word into the first two bytes of what ever is at the label, "password"

There just isn't anything to print when it's time to print.

Might I suggest that you just move DX=adr of a different buffer each time.

Code:

 MOV DX,NAME
 MOV AH,0x0A
 INT 21h

 MOV DX,PASSWORD
 MOV AH,0x0A
 INT 21h

 MOV DX,BUFFER
 MOV AH,0x0A
 INT 21h

;then use that data.

I hope that helped some how.

22 Feb 2004, 18:58

Vertex78

Joined: 22 Feb 2004
Posts: 12

Vertex78 22 Feb 2004, 23:06

Bitdog - Tommy, thanks for the info, i realize what i was doing wrong now. I am new to assembly and this board but it's nice to see that the members here don't mind helping out the newbs. Thanks!

22 Feb 2004, 23:06

Tommy

Joined: 17 Jun 2003
Posts: 489
Location: Norway

Tommy 23 Feb 2004, 09:18

You're welcome! Wink

23 Feb 2004, 09:18

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