#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);

/// Error handler stack depth tracking (saved/restored in snapshots)
extern xyw_byte error_handler_entry_s;