use16
org 7C00h
mov ax, 9ch
mov ss, ax
mov sp, 4096d
mov ax, 7C0h
mov ds, ax
mov ah, 02h
mov dx, 0000h
int 10h
;----------------------------------------
loadup:

	mov ah, 00h
	mov dl, 00h
	int 13h
	jc  reset_err
	mov ah, 00h
	mov al, 03h
	int 10h
	mov ah, 0Eh
	mov al, 'N'
	int 10h
	mov al, 'O'
	int 10h
	mov al, 'S'
	int 10h
	mov al, 20h
	int 10h
	mov al, '1'
	int 10h
	mov al, '.'
	int 10h
	mov al, '0'
	int 10h
	mov al, '.'
	int 10h
	mov al, '4'
	int 10h
	call print_enter
kernel_load:
	mov ah, 02h
	mov al, 01h
	mov ch, 00h
	mov dh, 00h
	mov cl, 02h
	mov dl, 00h
	mov bx, 2000h
	mov es, bx
	mov bx, 0000h
	int 13h
	jc  int13_err
	mov ch, [es:bx]
	inc bx
	mov dh, [es:bx]
	inc bx
	mov cl, [es:bx]
	inc bx
	mov al, [es:bx]
	cmp al, 0FFh
	je  non_sys_disk
	mov ah, 02h
	mov dl, 00h
	mov bx, 1000h
	mov es, bx
	mov bx, 0000h
	int 13h
	jc  int13_err
	jmp 1000h:0000h
stop:
	cli
	hlt
	jmp stop
non_sys_disk:
	mov ah, 0Eh
	mov al, 'F'
	int 10h
	mov al, 'S'
	int 10h
	mov al, 'B'
	int 10h
	mov al, 20h
	int 10h
	mov al, 'E'
	int 10h
	mov al, 'R'
	int 10h
	int 10h
	jmp stop
int13_err:
	mov ah, 0Eh
	mov al, 'I'
	int 10h
	mov al, '1'
	int 10h
	mov al, '3'
	int 10h
	mov al, 20h
	int 10h
	mov al, 'E'
	int 10h
	mov al, 'R'
	int 10h
	int 10h
	jmp stop
reset_err:
	mov ah, 0Eh
	mov al, 'R'
	int 10h
	mov al, 'S'
	int 10h
	mov al, 'T'
	int 10h
	mov al, 20h
	int 10h
	mov al, 'E'
	int 10h
	mov al, 'R'
	int 10h
	int 10h
print_enter:
	mov ah, 03h
	int 10h
	mov ah, 02h
	inc dh
	mov dl, 00h
	int 10h
	ret
times 510-($-$$) db 0
dw 0xAA55