X25_COND_OWN_RX_BUSY
x25->condition |= X25_COND_OWN_RX_BUSY;
if (x25->condition & X25_COND_OWN_RX_BUSY)
(x25->condition & X25_COND_OWN_RX_BUSY)) {
x25->condition &= ~X25_COND_OWN_RX_BUSY;