OOSIOP_ISTAT
oosiop_write_1(sc, OOSIOP_ISTAT, OOSIOP_ISTAT_ABRT);
oosiop_write_1(sc, OOSIOP_ISTAT, 0);
istat = oosiop_read_1(sc, OOSIOP_ISTAT);
oosiop_write_1(sc, OOSIOP_ISTAT, 0);
oosiop_write_1(sc, OOSIOP_ISTAT, OOSIOP_ISTAT_ABRT);
while (((istat = oosiop_read_1(sc, OOSIOP_ISTAT)) &