TRM_S1040_DMA_INTEN
DC395x_write8(acb, TRM_S1040_DMA_INTEN, EN_SCSIINTR | EN_DMAXFERERROR
DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0x00);
DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0);
DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0x00);