diff --git a/src/devices/bus/nscsi/s1410.cpp b/src/devices/bus/nscsi/s1410.cpp
index c5fccebb686..fc191302958 100644
--- a/src/devices/bus/nscsi/s1410.cpp
+++ b/src/devices/bus/nscsi/s1410.cpp
@@ -39,7 +39,6 @@ void nscsi_s1410_device::scsi_command()
 	case SC_TEST_UNIT_READY:
 	case SC_REZERO:
 	case SC_FORMAT_UNIT: // TODO does not support starting LBA
-	case SC_REQUEST_SENSE:
 	case SC_REASSIGN_BLOCKS:
 	case SC_READ:
 	case SC_WRITE:
@@ -51,6 +50,11 @@ void nscsi_s1410_device::scsi_command()
 		}
 		break;
 
+	case SC_REQUEST_SENSE:
+		scsi_data_in(SBUF_SENSE, 4);
+		scsi_status_complete(SS_GOOD);
+		break;
+
 	case SC_FORMAT_TRACK: {
 		if (scsi_cmdbuf[1] >> 5) {
 			scsi_status_complete(SS_NOT_READY);
@@ -89,12 +93,12 @@ void nscsi_s1410_device::scsi_command()
 		break;
 
 	case SC_WRITE_SECTOR_BUFFER:
-		scsi_data_out(2, 512);
+		scsi_data_out(2, bytes_per_sector);
 		scsi_status_complete(SS_GOOD);
 		break;
 
 	case SC_READ_SECTOR_BUFFER:
-		scsi_data_in(2, 512);
+		scsi_data_in(2, bytes_per_sector);
 		scsi_status_complete(SS_GOOD);
 		break;