SLC_FLUSHIN
initfunc(SLC_ABORT, SLC_FLUSHIN|SLC_FLUSHOUT);
initfunc(SLC_SUSP, SLC_FLUSHIN);
initfunc(SLC_IP, SLC_FLUSHIN|SLC_FLUSHOUT);
pointer[i+SLC_FLAGS]&SLC_FLUSHIN ?
~(SLC_ACK|SLC_FLUSHIN|