code: def read_PIA0_B_control(self, cpu_cycles, op_address, address):
          
          value = self.pia_0_B_control.value
          log.error(
              "%04x| read $%04x (PIA 0 B side Control reg.) send $%02x (%s) back.\t|%s",
              op_address, address, value, byte2bit_string(value),
              self.cfg.mem_info.get_shortest(op_address)
          )
          return value
docs: read from 0xff03 -> PIA 0 B side Control reg.