🚀 go-pugleaf

1. File is *opened* by the *create* function. So you must close it
before termination.
2. Filename in MSDOS is represented by ASCIIZ string but not with "$" at
the end.
3. If you want to put a binary number, you must specify that this is a
binary number:
15 (decimal)
0Fh (hex)
1111b (binary)
These 3 numbers are the same but in written down different bases
(10,16,2).

Look:
---------------------8<-------------------------
codeseg segment use16
        assume cs:codeseg, ds:codeseg, es:codeseg, ss:codeseg
        org 100h

start:
        mov     cx, 20h         ; normal (not *backed up*) file attr
        mov     ah, 3ch         ; *create and open* file function
        lea     dx, fname
        int     21h

        mov     bx, ax          ; bx = file handle
        mov     ah, 3eh         ; *close* file function
        int     21h

        mov     ax, 4c00h       ; *quit* function
        int     21h

fname   db      "test.txt",0

codeseg ends

end     start
---------------------8<-------------------------

Good Luck 
Alexei A. Frounze


Nutty Professor wrote:
> 
> Here's the code for creating a file. It always gave some sort of an error.
> Thanks for the help.
> 
> HELLO  segment
>   assume  cs:HELLO, ds:HELLO, es:HELLO
>   org     100h
> 
> start:  mov ah,09h
> 
> mov ah, 3C    ;To open the file with a handle
> mov cx, 00100000   ;The attribute
> 
>   mov bx,cs  ;pointing to the ASCIIZ filename
>   mov ds,bx
>   mov dx,offset mytext
> 
> mytext  db 'test.txt','$'
> 
>   mov ax,4c00h
>   int 21h
> 
> HELLO  ends
> 
> end start
> 
> Al Leitch [Team2000] wrote in message <8aka9j$9hi$1@bob.news.rcn.net>...
> >Could you please put up your source codes for us?
> >
> >---------------------------------------------------------------
> >Team2000 PC/Palm Pilot Programming Team:
> >http://ppilot.homepage.com
> >
> >Nutty Professor wrote:
> >
> >> Hi!
> >>
> >> I am a newbie in assembly and would like to know about File operations. I
> >> had a look at HelpPC but the programs I made didn't seem to work. Could
> >> someone make a few programs on file operations with comments to
> demonstrate
> >> how to work with files?
> >>
> >> Thanks in advance.
> >>
> >>
> >