diff --git a/src/mame/machine/pgmprot_igs027a_type1.c b/src/mame/machine/pgmprot_igs027a_type1.c
index 0323e6b20af..6202a7efb79 100644
--- a/src/mame/machine/pgmprot_igs027a_type1.c
+++ b/src/mame/machine/pgmprot_igs027a_type1.c
@@ -568,20 +568,20 @@ void pgm_arm_type1_state::command_handler_ddp3(int pc)
 UINT8 puzzli2_level_decode[256] = {
 0x32, 0x3e, 0xb2, 0x37, 0x31, 0x22, 0xd6, 0x0d, 0x35, 0x5c, 0x8d, 0x3c, 0x7a, 0x5f, 0xd4, 0xad,
 0x53, 0xff, 0xe9, 0x45, 0xed, 0x11, 0x68, 0x77, 0xd8, 0x34, 0x36, 0x45, 0xa6, 0xeb, 0x1c, 0xc7,
-0x3b, 0xbd, 0xad, 0x2f, 0x18, 0xde, 0xa1, 0xaa, 0xdd, 0x50, 0x57, 0xc2, 0xe5, 0x0a, 0x01, 0x6d,
-0x67, 0x65, 0x14, 0x70, 0xb7, 0x39, 0x24, 0x79, 0x83, 0xd2, 0x71, 0xb9, 0x10, 0xf5, 0x92, 0x93,
-0xfa, 0xe4, 0x5e, 0xb0, 0xf6, 0xaf, 0x95, 0x8a, 0x7d, 0x73, 0xf9, 0x63, 0x86, 0xcb, 0x1a, 0x56,
+0x3b, 0xbd, 0xad, 0x2f, 0x18, 0xde, 0xa1, 0xaa, 0xdd, 0x52, 0x57, 0xc2, 0xe5, 0x0a, 0x01, 0x6d,
+0x67, 0x65, 0x14, 0x70, 0xb7, 0x39, 0x27, 0x78, 0x83, 0xd2, 0x71, 0xb9, 0x10, 0xf5, 0x92, 0x93,
+0xfa, 0xe4, 0x5e, 0xb0, 0xf6, 0xaf, 0x95, 0x8a, 0x7c, 0x73, 0xf9, 0x63, 0x86, 0xcb, 0x1a, 0x56,
 0xf1, 0x3a, 0xae, 0x63, 0x01, 0x29, 0x96, 0x22, 0x8f, 0x5d, 0x9a, 0x65, 0x74, 0x21, 0x20, 0x40,
-0xd3, 0x05, 0xa2, 0xe3, 0xbc, 0x9e, 0x1e, 0x10, 0x15, 0x0c, 0x8a, 0x9c, 0xec, 0x38, 0xb6, 0x9d,
-0x2a, 0xf7, 0x14, 0x0e, 0x85, 0xc7, 0x7f, 0xce, 0x94, 0x16, 0x48, 0xa9, 0x80, 0x6e, 0x78, 0xd8,
-0xa6, 0x7e, 0x42, 0xe4, 0xa2, 0x2b, 0xef, 0xed, 0x24, 0xba, 0xb8, 0x7e, 0xc9, 0x2b, 0x90, 0xcc,
+0xd3, 0x05, 0xa2, 0xe3, 0xbc, 0x9e, 0x1e, 0x10, 0x15, 0x0c, 0x8a, 0x9c, 0xec, 0x38, 0xb5, 0x9d,
+0x2d, 0xf7, 0x14, 0x0e, 0x85, 0xc7, 0x7f, 0xce, 0x94, 0x16, 0x48, 0xa9, 0x80, 0x6e, 0x7b, 0xd8,
+0xa7, 0x7e, 0x42, 0xe6, 0xa2, 0x2a, 0xef, 0xee, 0x24, 0xba, 0xb8, 0x7e, 0xc9, 0x2b, 0x90, 0xcc,
 0x58, 0xd1, 0xf3, 0xe2, 0x6f, 0xed, 0x9f, 0xf0, 0x4a, 0x54, 0x8d, 0x08, 0xf8, 0x51, 0x68, 0xc8,
-0x03, 0x0b, 0xbb, 0xc1, 0xe2, 0x4c, 0x04, 0xc5, 0x8c, 0x09, 0x0e, 0xbf, 0x62, 0x48, 0x75, 0x59,
-0x1d, 0x80, 0xdf, 0x60, 0x07, 0xe2, 0x1b, 0x67, 0xa5, 0xbf, 0xcd, 0x86, 0xdc, 0xc3, 0x6a, 0x4e,
+0x03, 0x0b, 0xbb, 0xc1, 0xe3, 0x4c, 0x04, 0xc5, 0x8f, 0x09, 0x0e, 0xbf, 0x62, 0x49, 0x76, 0x59,
+0x1d, 0x80, 0xde, 0x60, 0x07, 0xe2, 0x1b, 0x67, 0xa5, 0xbf, 0xcd, 0x86, 0xdc, 0xc3, 0x6a, 0x4e,
 0xd0, 0xfc, 0xd5, 0x3f, 0x98, 0x96, 0x2e, 0x4c, 0xb3, 0xea, 0x2d, 0x75, 0xe6, 0xc0, 0x6c, 0x69,
 0x9b, 0xb7, 0x43, 0x8b, 0x41, 0x47, 0x02, 0xda, 0x98, 0x3d, 0xa3, 0x79, 0x50, 0x4f, 0xb4, 0x55,
 0x5a, 0x25, 0xf4, 0xc8, 0x58, 0x30, 0xc4, 0x12, 0xa9, 0x45, 0xda, 0x91, 0xa4, 0xaa, 0xfc, 0x84,
-0xfa, 0x88, 0x06, 0xce, 0xfe, 0x32, 0xd5, 0x28, 0x1d, 0x19, 0x4b, 0xb1, 0x83, 0xf2, 0x72, 0x26, 
+0xfa, 0x88, 0x06, 0xcf, 0xfe, 0x33, 0xd5, 0x28, 0x1d, 0x19, 0x4b, 0xb1, 0x83, 0xf2, 0x72, 0x26,
 };
 
 
@@ -1825,9 +1825,16 @@ DRIVER_INIT_MEMBER(pgm_arm_type1_state,puzzli2)
 //#define PUZZLI2_LEVEL_STRUCTURE_LOG
 #ifdef PUZZLI2_LEVEL_STRUCTURE_LOG
 	UINT8 *src2 = (UINT8 *) (machine().root_device().memregion("maincpu")->base());
+	UINT8 new_puzzli2_level_decode[256];
+
+	for (int i=0;i<256;i++)
+		new_puzzli2_level_decode[i] = puzzli2_level_decode[i];
 
 	int offset;
 	int limit;
+	UINT8 coverage[256];
+	for (int i=0;i<256;i++)
+		coverage[i] = 0;
 
 	if (!strcmp(machine().system().name,"puzzli2"))
 	{
@@ -1900,7 +1907,7 @@ DRIVER_INIT_MEMBER(pgm_arm_type1_state,puzzli2)
 				}
 				else if (stage==2)
 				{	
-					printf("%02x <- Mask value equal to number of entries\n", rawvalue);
+					printf("%02x <- Mask value equal to number of entries (xor table location is %02x)", rawvalue, tableloc);
 					stage = 3;
 
 					// 
@@ -1909,8 +1916,20 @@ DRIVER_INIT_MEMBER(pgm_arm_type1_state,puzzli2)
 						// for 0 entries skip back to state 1 instead of 3, because there is nothing following
 						stage = 1;
 						currentcolumn++;
+
+						coverage[tableloc] = 1;
+						if (rawvalue!=0)
+						{
+							printf(" invalid mask after 00 length?");
+							// attempt to correct the table
+							new_puzzli2_level_decode[tableloc] ^= rawvalue;
+
+						}
+
 					}
 
+					printf("\n");
+
 				}
 				else if (stage==3)
 				{
@@ -1935,12 +1954,33 @@ DRIVER_INIT_MEMBER(pgm_arm_type1_state,puzzli2)
 
 		printf("total number of valid columns was %02x\n", currentcolumn);
 
-		if ((currentcolumn!=0x6) && (currentcolumn!=0x7) && (currentcolumn!=0x8) && (currentcolumn!=0x5))  // 5 is suspicious
+		if ((currentcolumn!=0x6) && (currentcolumn!=0x7) && (currentcolumn!=0x8))  // 5 is suspicious
 			fatalerror("invalid number of columns?\n");
 
 		printf("\n");
 
 	}
+
+	for (int i=0;i<256;i++)
+	{
+		printf("%d ",coverage[i]);
+
+	}
+	printf("\n");
+
+	int c=0;
+	for (int i=0;i<256;i++)
+	{
+		printf("0x%02x, ", new_puzzli2_level_decode[i]);
+
+		c++;
+		if (c==16)
+		{
+			printf("\n");
+			c = 0;
+		}
+	}
+
 #endif