void a2_prints(apple2_state_t *st, char *s);
void a2_goto(apple2_state_t *st, int r, int c);
void a2_cls(apple2_state_t *st);
void a2_prints(apple2_state_t *st, char *s);
void a2_goto(apple2_state_t *st, int r, int c);
void a2_cls(apple2_state_t *st);