Library for RAM chip

Using Arduino Storage
31

this is what i have, what should i change?

int AM9111::read(unsigned int address)
{
  int rv = 0;
  _read() = rv;
  _setAddress(address);
  return rv;
}

int AM9111::_read()
{
  int rv = 0;
  digitalWrite(_odp,0);
  digitalWrite(_wep,1);
  bitWrite(rv,0,digitalRead(_IO[0]));
  bitWrite(rv,1,digitalRead(_IO[1]));
  bitWrite(rv,2,digitalRead(_IO[2]));
  bitWrite(rv,3,digitalRead(_IO[3]));
  _read() = rv;
}