REG_SCSI_DATA_NOACK
outb(BIT(sh->this_id) | BIT(target), fd->base + REG_SCSI_DATA_NOACK);
fd->base + REG_SCSI_DATA_NOACK);
outb(BIT(cmd->device->host->this_id), fd->base + REG_SCSI_DATA_NOACK);