#include "../xyw.h"

void system_setup(xyw_byte *data);
xyw_byte system_input(xyw_byte *data, xyw_byte addr, xyw_byte *error);
void system_output(xyw_byte *data, xyw_byte addr, xyw_byte *error);
void system_tick(xyw_byte *data);
void system_save(xyw_byte *data, xyw_byte *state);
void system_restore(xyw_byte *data, const xyw_byte *state);