void * vg_init(unsigned long mode) {

    struct reg86u registries;
    struct mem_range range;
    vbe_mode_info_t vmi;

    registries.u.b.intno = 0x10;
    registries.u.b.ah = 0x4F;
    registries.u.b.al = 0x02;
    registries.u.w.bx = 1 << 14 | mode;
    sys_int86(&registries);

    vbe_get_mode_info(mode, &vmi);

    range.mr_base = vmi.PhysBasePtr;

    range.mr_limit = range.mr_base + vmi.XResolution * vmi.YResolution*(vmi.BitsPerPixel);

    sys_privctl(SELF, SYS_PRIV_ADD_MEM, &range);

    video_mem = vm_map_phys(SELF,(void *) range.mr_base, vmi.XResolution * vmi.YResolution * (vmi.BitsPerPixel));

    hres = vmi.YResolution;
    vres = vmi.XResolution;
    bits_per_pixel = vmi.BitsPerPixel;

    return NULL;
}