PL_PCM_STOP
plc_go_state(smc,np,PL_PCM_STOP) ;
PL_PCM_STOP | PL_MAINT ;
outpw(PLC(p,PL_CNTRL_B),PL_PCM_STOP) ;
plc_go_state(smc,np,PL_PCM_STOP) ;
plc_go_state(smc,np,PL_PCM_STOP) ;
plc_go_state(smc,np,PL_PCM_STOP) ;
plc_go_state(smc,np,PL_PCM_STOP) ;