DISKLED_ON
outb(PORT_DISKLED, inb(PORT_DISKLED) | DISKLED_ON);
outb(PORT_DISKLED, inb(PORT_DISKLED) & ~DISKLED_ON);
outb(PORT_DISKLED, inb(PORT_DISKLED) | DISKLED_ON);
outb(PORT_DISKLED, inb(PORT_DISKLED) & ~DISKLED_ON);