section .text
global _start

_start:
    call ioperm
    mov al, 0xB6
    out 43h, al
    mov ax, 4560
    out 42h, al
    mov al, ah
    out 42h, al
    in al, 61h
    or al, 00000011b
    out 61h, al
    call delay
    in al, 61h
    and al, 11111100b
    out 61h, al
    call exit

delay:
    mov eax, 162
    mov ebx, tts
    xor ecx, ecx
    int 80h
    ret
exit:
    xor eax, eax
    inc eax
    xor ebx, ebx
    int 80h
ioperm:
    mov eax, 65h
    mov ebx, 40h
    mov ecx, 30h
    mov edx, 1
    int 80h
    ret
section .data
tts: dd 1, 100000000