tanmay

hi,


I am using Emulator 8086 for creating a very basic OS of my own. All file handling operations, like creating, opening, reading and writing to a file are working perfectly with the interrupts of int 21h.

However, file deletion is NOT working.

Here's the code that I wrote for file deletion - it is very simple and conforms to the norms but it is not working.

org 100h

.data

OurBuff db 00h, 00h
senter db "Enter the path : $"
sdeleted db "Deleted$"
serror db "Error$"

.code

mov ax, @data
mov ds, ax

mov dx, offset senter
mov ah, 09h
int 21h

mov bx, offset OurBuff
mov dx, bx
mov byte [bx], 33
mov ah, 0Ah
int 21h

mov al, [bx+1]
xor ch, ch
mov cl, al ;cl and hence cx = actual length of string
add al, 02h
xor ah, ah
mov si, ax
mov byte [bx+si], 0

mov dx, offset OurBuff
mov ah, 41h
int 21h

jc error

mov dx, offset sdeleted
jmp endit

error:

mov dx, offset serror


endit:

mov ah, 09h
int 21h



ret


Kindly help me out as soon as possible.