QE_CSR_VECTOR
QE_WCSR(QE_CSR_VECTOR, uh->uh_lastiv);
QE_WCSR(QE_CSR_VECTOR, sc->sc_intvec | 1);
QE_RCSR(QE_CSR_VECTOR) & 1 ? "delqa":"deqna",
QE_WCSR(QE_CSR_VECTOR, QE_RCSR(QE_CSR_VECTOR) & ~1); /* ??? */
QE_WCSR(QE_CSR_VECTOR, sc->sc_intvec);