#include "../xyw.h"

xyw_byte system_read(xyw_byte *data, xyw_byte addr, xyw_byte *error);
void system_write(xyw_byte *data, xyw_byte addr, xyw_byte val, xyw_byte *error);
xyw_word system_readw(xyw_byte *data, xyw_byte addr, xyw_byte *error);
void system_writew(xyw_byte *data, xyw_byte addr, xyw_word val, xyw_byte *error);