TRM_S1040_SCSI_INTEN
DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x7F);
DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x00);
DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0);