name "attrib"

; set and get file attributes... 

; note 1: you need to manually create and copy "test.txt" to: 
; c:\emu8086\vdrive\c before running this example. 

; note 2: it may look like the file suddenly disappears unless 
; you set the settings of file manager to show system and hidden files.  

; note 3: file must exist for setting parameters. however reading 
; parameters does not require the existance of a file and 
; it is usually used to check if file exists or not. 

org  100h


jmp start

  filename   db      "c:\test.txt", 0
  sOK        db      "ok! file found. attributes set: system, hidden & read-only. $"
  sERR       db      "file does not exist. (expected i/o error)", 0dh, 0ah
             db        ' you need to manually create and copy "test.txt" to:', 0dh, 0ah
             db        " c:\emu8086\vdrive\c before running this example.$"

; when running in emulator, the real path of this file is: 
;           c:\emu8086\vdrive\c\test.txt 



start:
xor cx, cx

; read attributes: 
mov     ah, 43h
mov     al, 0
mov     dx, offset filename
int     21h
jc      error
; set new attributes: 
mov     ah, 43h
mov     al, 1
mov     cx, 7
mov     dx, offset filename
int     21h
jc      error

mov dx, offset sOK
mov ah, 9
int 21h

jmp wait_any_key






error:
    mov dx, offset sERR
    mov ah, 9
    int 21h





wait_any_key:
    mov ah, 0
    int 16h

ret