extern void init();
extern void clear_ram( char ram_page );
extern void write_ram( short addr, char dta8, char ram_page );
extern char read_ram( short addr, char ram_page );
extern void write_reg( char dta8, char reg );
extern char ide_busy( char dta8, char mask );
extern void get_ide( short lba1, short lba2, char ram_page );
extern void get_info( char ram_page );
extern void read_sector( char ram_page );
extern void put_ide( short lba1, short lba2, char ram_page );