u16 calc_page_size(u8 memmodel, u16 width, u16 height);
struct vgamode_s *get_current_mode(void);
int vga_set_mode(int mode, int flags);
u16 calc_page_size(u8 memmodel, u16 width, u16 height);
struct vgamode_s *get_current_mode(void);
int vga_set_mode(int mode, int flags);