org 0x7C00

startboot:
        cli
        xor ax,ax
        mov ds,ax
        mov es,ax
        mov ss,ax
        mov sp,0x7C00
        sti
        jmp 0x7E00

;-------------------------------------------------

finish: times 0x1FE-finish+startboot db 0
db 0x55,0xAA

;-------------------------------------------------
;+++++++++++++++++++++++++++++++++++++++++++++++++
;-------------------------------------------------

org 0x7E00
    jmp start_system

;-------------------------------------------------

;adr 0x7E08
;pred 31

GDT dp 000000000000000001111110000010000000000000011111b

       ;      24    16.9  L ype
GDT0 dq 0;adr_31GDXU_p_1PDPS_t_A_adres_23...0...........predel_15...0...
GDT1 dq 0000000011001111000111000000000000000000000000001111111111111111b ;kod
GDT2 dq 0000000011001111000101000000000000000000000000001111111111111111b ;dan
GDT3 dq 0000000011000000000101100000000010110011100110011011011110011001b ;stk

;-------------------------------------------------

start_system:
        mov ax,0x4F02
        mov bx,0x4118
        int 0x10
        in al,0x92
        or al,2
        out 0x92,al
        lgdt [GDT]
        cli
        in al,0x70
        or al,0x80
        out 0x70,al
        mov eax,cr0
        or al,1
        mov cr0,eax
        jmp 0x8:con
con:
        ;mov ax,cs
        ;mov ax,16
        ;mov ds,ax
        ;mov es,ax
        ;mov ax,24
        ;mov ss,ax
        mov edi,0xA0000

vs:
        jmp vs

;-------------------------------------------------