EVENT_PCMA
queue_event(smc,EVENT_PCMA+p,PC_START) ;
queue_event(smc,EVENT_PCMA+p,PC_STOP) ;
queue_event(smc,EVENT_PCMA,PC_TRACE) ;
case EVENT_PCMA : /* PHY A */
if (class >= EVENT_PCMA &&
class < EVENT_PCMA + NUMPHYS) {
pcm(smc,class - EVENT_PCMA,(int)ev->event) ;