SC_COMP_RUN
if ((ppp->xstate & SC_COMP_RUN) && ppp->xc_state &&
ppp->xstate &= ~SC_COMP_RUN;
ppp->xstate &= ~SC_COMP_RUN;
ppp->xstate &= ~SC_COMP_RUN;
ppp->xstate |= SC_COMP_RUN;
if (ppp->xc_state && (ppp->xstate & SC_COMP_RUN))