LE_C0_STOP
lereg->ler_rdp = LE_C0_STOP;
lereg->ler_rdp = LE_C0_STOP; /* disable all external activity */
lereg->ler_rdp = LE_C0_STOP;
(*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_STOP);
(*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_STOP);
le_isa_wrcsr(sc, LE_CSR0, LE_C0_STOP);
if (le_isa_rdcsr(sc, LE_CSR0) != LE_C0_STOP)
pcn_csr_write(sc, LE_CSR0, LE_C0_STOP);