diff --git a/util/superiotool/smsc.c b/util/superiotool/smsc.c
index 8c14b35..3538d1d 100644
--- a/util/superiotool/smsc.c
+++ b/util/superiotool/smsc.c
@@ -27,20 +27,14 @@
 #define DEVICE_REV_REG  	0x21
 
 const static struct superio_registers reg_table[] = {
-	{0x28, "FDC37N769", {
-		{NOLDN, NULL,
-			{0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
-			 0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0x10,0x11,0x12,0x13,
-			 0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,
-			 0x1e,0x1f,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,
-			 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,EOT},
-			{0x28,0x9c,0x88,0x70,0x00,0x00,0xff,0x00,0x00,0x00,
-			 0x00,0x00,0x02,0x28,NANA,0x00,0x00,0x80,RSVD,RSVD,
-			 NANA,NANA,NANA,0x03,RSVD,RSVD,RSVD,RSVD,RSVD,RSVD,
-			 0x80,0x00,0x3c,RSVD,RSVD,0x00,0x00,0x00,0x00,0x00,
-			 0x00,0x00,RSVD,0x00,0x00,0x03,0x00,0x00,EOT}},
+	/* The following Super I/Os use the 0x20/0x21 ID registers. */
+	{0x0e, "LPC47N252", {	/* From sensors-detect */
 		{EOT}}},
-	{0x42, "FDC37B80x", {
+	{0x14, "LPC47M172", {
+		{EOT}}},
+	{0x40, "FDC37C672/FDC37C67x", {	/* Chiprev: 0x01 */
+		{EOT}}},
+	{0x42, "FDC37B80x/FDC37M707", {
 		{EOT}}},
 	{0x44, "FDC37B78x", {
 		{NOLDN, NULL,
@@ -85,6 +79,8 @@
 			{0x30,0x60,0x61,0x70,0xf0,EOT},
 			{0x00,0x00,0x00,NANA,NANA,EOT}},
 		{EOT}}},
+	{0x47, "FDC37M60x", {	/* TODO: Not yet in sensors-detect */
+		{EOT}}},
 	{0x4c, "FDC37B72x", {
 		{NOLDN, NULL,
 			{0x03,0x07,0x20,0x21,0x22,0x23,0x24,0x26,0x27,0x28,
@@ -155,11 +151,9 @@
 			 NANA,NANA,NANA,NANA,0x00,0x00,0x00,0x00,RSVD,RSVD,
 			 RSVD,RSVD,RSVD,RSVD,EOT}},
 		{EOT}}},
-	{0x47, "FDC37M60x", {
-		{EOT}}},
 	{0x51, "LPC47B27x", {
 		{EOT}}},
-	{0x59, "LPC47M10x", {
+	{0x52, "LPC47B37x", {
 		{NOLDN, NULL,
 			{0x03,0x07,0x20,0x21,0x22,0x23,0x24,0x26,0x27,0x28,
 			 0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,EOT},
@@ -194,17 +188,35 @@
 			{0x30,0x60,0x61,0x70,EOT},
 			{0x00,0x03,0x30,0x05,EOT}},
 		{EOT}}},
-	{0x60, "LPC47M15x", {
+	{0x54, "LPC47U33x", {
+		{EOT}}},
+	{0x56, "LPC47B34x", {
+		{EOT}}},
+	{0x57, "LPC47S42x", {
+		{EOT}}},
+	{0x59, "LPC47M10x/112/13x", {
+		{EOT}}},
+	{0x5d, "LPC47B357", {	/* From sensors-detect (no datasheet) */
+		{EOT}}},
+	{0x5f, "LPC47M14x", {
+		{EOT}}},
+	{0x60, "LPC47M15x/192/997", {
 		{EOT}}},
 	{0x62, "LPC47S45x", {
 		{EOT}}},
-	{0x6e, "LPC47B387", {
+	{0x6b, "LPC47M292", {	/* From sensors-detect */
+		{EOT}}},
+	{0x6e, "LPC47B387", {	/* TODO: Not yet in sensors-detect */
 		/* Found in the HP Compaq Business Desktop d530 Series */
 		/* http://thread.gmane.org/gmane.linux.bios/26648 */
 		/* We cannot find a public datasheet for this Super I/O. */
 		{EOT}}},
 	{0x6f, "LPC47B397", {
 		{EOT}}},
+	{0x74, "LPC47M182", {
+		{EOT}}},
+	{0x76, "LPC47M584", {	/* From sensors-detect (no datasheet) */
+		{EOT}}},
 	{0x77, "A8000", {	/* ASUS A8000, a rebranded DME1737(?) */
 		{NOLDN, NULL,
 			{0x03,0x07,0x20,0x21,0x22,0x23,0x24,0x26,0x27,0x28,
@@ -259,13 +271,68 @@
 			{0x30,0x60,0x61,0x62,0x63,0xf0,0xf1,0xf2,EOT},
 			{0x00,0x00,0x00,0x00,0x00,NANA,RSVD,0x04,EOT}},
 		{EOT}}},
+	{0x79, "SCH5504", {	/* From sensors-detect (no datasheet) */
+		{EOT}}},
+#if 0
+	{0x7a, "Unknown", {	/* Found in Toshiba Satellite A80-117. */
+		{EOT}}},
+#endif
+	{0x7c, "SCH3112", {
+		{EOT}}},
+	{0x7d, "SCH3114", {
+		{EOT}}},
+	{0x7f, "SCH3116", {
+		{EOT}}},
 	{0x81, "SCH5307", {
 		{EOT}}},
+	{0x85, "SCH5317", {	/* From sensors-detect */
+		{EOT}}},
+	{0x90, "SCH4307", {	/* From sensors-detect */
+		{EOT}}},
+
+	/* The following Super I/Os use the 0x0d/0x0e ID registers. */
+	{0x03, "FDC37C669", {
+		/* Init: 0x55, 0x55. Exit: 0xaa. Ports: 0x3f0/0x370. */
+		/* Chiprev: 0x02. */
+		{EOT}}},
+	{0x04, "FDC37C669FR", {	/* TODO: Not yet in sensors-detect. */
+		/* Init: 0x55, 0x55. Exit: 0xaa. Ports: 0x3f0/0x370. */
+		{EOT}}},
+	{0x28, "FDC37N769", {
+		/* Init: 0x55. Exit: 0xaa. Ports: 0x3f0/0x370. */
+		{NOLDN, NULL,
+			{0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
+			 0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0x10,0x11,0x12,0x13,
+			 0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,
+			 0x1e,0x1f,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,
+			 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,EOT},
+			{0x28,0x9c,0x88,0x70,0x00,0x00,0xff,0x00,0x00,0x00,
+			 0x00,0x00,0x02,0x28,NANA,0x00,0x00,0x80,RSVD,RSVD,
+			 NANA,NANA,NANA,0x03,RSVD,RSVD,RSVD,RSVD,RSVD,RSVD,
+			 0x80,0x00,0x3c,RSVD,RSVD,0x00,0x00,0x00,0x00,0x00,
+			 0x00,0x00,RSVD,0x00,0x00,0x03,0x00,0x00,EOT}},
+		{EOT}}},
+	{0x5a, "LPC47N227", {
+		/* Init: 0x55. Exit: 0xaa. Ports: 0x2e/0x4e. */
+		{EOT}}},
+	{0x65, "FDC37C665GT/IR", {
+		/* Init: 0x55, 0x55. Exit: 0xaa. Port: 0x3f0. */
+		/* Chiprev: 0x02 = FDC37C665GT, 0x82 = FDC37C665IR */
+		{EOT}}},
+	{0x66, "FDC37C666GT", {
+		/* Init: 0x55, 0x55. Exit: 0xaa. Port: 0x3f0. Chiprev: 0x02. */
+		{EOT}}},
 	{EOT}
 };
 
 static void enter_conf_mode_smsc(uint16_t port)
 {
+	/* Some of the SMSC Super I/Os have an 0x55,0x55 init, some only
+	 * require one 0x55. We do 0x55,0x55 for all of them at the moment,
+	 * in the assumption that the extra 0x55 won't hurt the other
+	 * Super I/Os. This is verified to be true on (at least) the FDC37N769.
+	 */
+	outb(0x55, port);
 	outb(0x55, port);
 }
 
diff --git a/util/superiotool/superiotool.h b/util/superiotool/superiotool.h
index 3509d07..9ba5143 100644
--- a/util/superiotool/superiotool.h
+++ b/util/superiotool/superiotool.h
@@ -54,7 +54,7 @@
 #define LDNSIZE		(MAXLDN + 3)	/* Biggest LDN + 0 + NOLDN + EOT */
 #define MAXNUMIDX	70		/* Maximum number of indexes */
 #define IDXSIZE 	(MAXNUMIDX + 1)
-#define MAXNUMPORTS	(5 + 1)		/* Maximum number of Super I/O ports */
+#define MAXNUMPORTS	(6 + 1)		/* Maximum number of Super I/O ports */
 
 /* Command line parameters. */
 extern int dump, dump_readable, verbose;
@@ -109,10 +109,10 @@
 	int ports[MAXNUMPORTS]; /* Signed, as we need EOT. */
 } superio_ports_table[] = {
 	{probe_idregs_ali,	{0x3f0, 0x370, EOT}},
-	{probe_idregs_nsc,	{0x2e, 0x4e, EOT}},
 	{probe_idregs_fintek,	{0x2e, 0x4e, EOT}},
 	{probe_idregs_ite,	{0x2e, 0x4e, EOT}},
-	{probe_idregs_smsc,	{0x2e, 0x4e, 0x3f0, 0x370, EOT}},
+	{probe_idregs_nsc,	{0x2e, 0x4e, EOT}},
+	{probe_idregs_smsc,	{0x2e, 0x4e, 0x162e, 0x164e, 0x3f0, 0x370, EOT}},
 	{probe_idregs_winbond,	{0x2e, 0x4e, 0x3f0, 0x370, 0x250, EOT}},
 };