OSIOP_IO
#define OSIOP_PHASE(x) ((x) & (OSIOP_MSG|OSIOP_CD|OSIOP_IO))
#define DATA_IN_PHASE OSIOP_IO
#define STATUS_PHASE (OSIOP_CD|OSIOP_IO)
#define MSG_IN_PHASE (OSIOP_MSG|OSIOP_CD|OSIOP_IO)