text: #ifndef SIM__HEADER
  #define SIM__HEADER
  
  unsigned int cpu_read_byte(unsigned int address);
  unsigned int cpu_read_word(unsigned int address);
  unsigned int cpu_read_long(unsigned int address);
  void cpu_write_byte(unsigned int address, unsigned int value);
  void cpu_write_word(unsigned int address, unsigned int value);
  void cpu_write_long(unsigned int address, unsigned int value);
  void cpu_pulse_reset(void);
  void cpu_set_fc(unsigned int fc);
  int  cpu_irq_ack(int level);
  void cpu_instr_callback();
  
  #endif /* SIM__HEADER */
  