ST3_DCD
if (!(sca_in(MSCI1_OFFSET + ST3, port) & ST3_DCD))
if (!(sca_in(get_msci(port) + ST3, port_to_card(port)) & ST3_DCD)) {
if (!(sca_in(get_msci(port) + ST3, port->card) & ST3_DCD)) {