SELECT_ENABLE_REG
NCR5380_write(SELECT_ENABLE_REG, 0);
NCR5380_write(SELECT_ENABLE_REG, 0);
NCR5380_write(SELECT_ENABLE_REG, 0);
NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask);
NCR5380_write(SELECT_ENABLE_REG, 0);
NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask);
NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask);
NCR5380_write(SELECT_ENABLE_REG, 0);