Y2_IS_HW_ERR
dev->d_intrmask = Y2_IS_HW_ERR | Y2_IS_STAT_BMU;
CSR_WRITE_4(dev, B0_IMSK, Y2_IS_HW_ERR | Y2_IS_STAT_BMU);
if ((status & Y2_IS_HW_ERR) != 0) {
dev->d_intrmask &= ~Y2_IS_HW_ERR;