13 #define read16() 256*read_byte() + read_byte()
14 #define from16(a, b) 256*a+b
15 uint8_t read_byte(void);
16 void write_byte(uint8_t b
);
18 void write_dpin(uint8_t i
, bool b
);
19 bool read_dpin(uint8_t i
);
21 void write_apin(uint8_t i
, uint8_t a
);
22 uint8_t read_apin(uint8_t i
);
25 bool input_available(void);
29 void debug(char *fmt
, ...);
31 void die(char *fmt
, ...);