mbr.S

%include "boot.inc"
SECTION MBR vstart=0x7c00    
	mov ax,cs				
	mov ds,ax
	mov es,ax
	mov ss,ax
	mov fs,ax
	mov sp,0x7c00 
	mov ax,0xb800
	mov gs,ax

	mov ax,0x600  
	mov bx,0x700	
	mov cx,0		
	mov	dx,0x184f   
	int 0x10	
	

	mov eax,0x2
	mov bx,	0x900
	mov	cx,4
	call rd_disk_m_16
	jmp LOADER_BASE_ADDR ;¿ç¹ýÊý¾Ý¶Î

rd_disk_m_16:
	

	mov esi,eax 
	mov di,cx

	mov dx,0x1f2
	mov al,cl
	out dx,al
	
	in al,dx

	mov eax,esi

	mov dx,0x1f3
	out dx,al

	
	mov cl,8
	shr eax,cl
	mov dx,0x1f4
	out dx,al

	
	shr eax,cl
	mov dx,0x1f5
	out dx,al

	
	shr eax,cl
	and al,0x0f
	or al,0xe0 
	mov dx,0x1f6
	out dx,al

	mov dx,0x1f7
	mov al,0x20
	out dx,al


not_ready:
	nop         
	in al,dx
	and al,0x88
	cmp al,0x08
	jnz not_ready

	mov ax,di
	mov dx,256
	mul dx
	mov cx,ax
	mov dx,0x1f0

go_read:
	in ax,dx  
	mov [bx],ax
	add	bx,2
	loop go_read
	ret

	

times 510-($-$$) db 0
db 0x55,0xaa