added some security custom info (http://www.higenekodo.jp/sega_n.htm)

src/mame/drivers/segas16a.c

@@ -2043,7 +2043,7 @@ ROM_END
  **************************************************************************************************************************
  **************************************************************************************************************************
     Action Fighter, Sega System 16A
-    CPU: FD1089A 317-0018
+    CPU: FD1089A 317-0018<EFBFBD>@(dedicated cabinet version uses 317-0014)
  */
 ROM_START( afighter )
 	ROM_REGION( 0x40000, "maincpu", 0 ) /* 68000 code */
@@ -2366,7 +2366,7 @@ ROM_END
 /**************************************************************************************************************************
     Dump Matsumoto, pre-System 16
     CPU: 68000
-    i8751 317-00xx (unknown)
+    i8751 317-0011A
  */
 ROM_START( dumpmtmt )
 	ROM_REGION( 0x40000, "maincpu", 0 ) /* 68000 code */
@@ -2476,7 +2476,7 @@ ROM_END
  **************************************************************************************************************************
  **************************************************************************************************************************
     Major League, pre-System 16
-    CPU: 68000
+    CPU: 68000 (version uses i8751(315-5158C) known to be exist)
  */
 ROM_START( mjleague )
 	ROM_REGION( 0x40000, "maincpu", 0 ) /* 68000 code */
@@ -2942,7 +2942,7 @@ ROM_END
  **************************************************************************************************************************
  **************************************************************************************************************************
     Sukeban Jansi Ryuko, Sega System 16A
-    CPU: FD1089B (317-5021)
+    CPU: FD1089B (317-5021, also 317-5018 known to be exist)
 
      (JPN Ver.)
     (c)1988 White Board
@@ -3219,7 +3219,7 @@ ROM_END
  **************************************************************************************************************************
  **************************************************************************************************************************
     Wonder Boy III, Sega System 16A
-    CPU: FD1089A (317-unknown)
+    CPU: FD1089A (317-0086)
  */
 ROM_START( wb35 )
 	ROM_REGION( 0x40000, "maincpu", 0 ) /* 68000 code */

src/mame/drivers/segas16b.c

@@ -3298,7 +3298,7 @@ MACHINE_DRIVER_END
  **************************************************************************************************************************
  **************************************************************************************************************************
     Ace Attacker, Sega System 16B
-    CPU: FD1094 (317-0059)
+    CPU: FD1094 (317-0059, also 317-0061 version known to be exist)
     ROM Board: 171-5358
 */
 ROM_START( aceattac )
@@ -4268,7 +4268,7 @@ ROM_END
  **************************************************************************************************************************
  **************************************************************************************************************************
     Dynamite Dux, Sega System 16B
-    CPU: FD1094 (317-0096)
+    CPU: FD1094 (317-0096, version uses 317-0094 known to be exist)
     ROM Board: 171-5521
 
     Pos.   Silk        Type        Part         Pos.   Silk        Type        Part
@@ -4850,7 +4850,7 @@ ROM_END
  **************************************************************************************************************************
  **************************************************************************************************************************
     Heavyweight Champ, Sega System 16B
-    CPU: 68000
+    CPU: 68000 (version uses custom 317-0046 known to be exist)
     ROM Board: 171-5521
 */
 ROM_START( hwchamp )
@@ -5482,7 +5482,7 @@ ROM_END
  **************************************************************************************************************************
  **************************************************************************************************************************
     Sukeban Jansi Ryuko (JPN Ver.)
-    CPU: FD1089B 317-5021 (16A/16B)
+    CPU: FD1089B 317-5021 (16A/16B) (version uses i8751(317-5019) known to be exist)
     ROM Board: 171-???
 
     (c)1988 White Board
@@ -5713,7 +5713,7 @@ ROM_END
  **************************************************************************************************************************
  **************************************************************************************************************************
     Tough Turf, Sega System 16B
-    CPU: 68000 + i8751 (317-0104)
+    CPU: 68000 + i8751 (317-0104, 317-0100 also known to be exist)
     ROM Board: 171-5704
  */
 ROM_START( tturf )

src/mame/drivers/segas18.c

@@ -1716,7 +1716,7 @@ ROM_END
 
 /**************************************************************************************************************************
     D.D. Crew, Sega System 18
-    CPU: FD1094 (317-0182)
+    CPU: FD1094 (317-0182 for 2P version, 317-0185 for 4P version, 317-0188 for 3P version)
     ROM Board: 171-5987A
 */
 ROM_START( ddcrewj )
@@ -1760,7 +1760,7 @@ ROM_END
     game No. 833-8830-02
     pcb  No. 837-8832-02 (171-5873-02b)
     rom  No. 834-8831-02 (171-5987a)
-    CPU Hiatchi FD1094 317-0196
+    CPU Hiatchi FD1094 317-0196 (Japanese version uses 317-0194)
 */
 ROM_START( desertbr )
 	ROM_REGION( 0x300000, "maincpu", 0 ) /* 68000 code - custom CPU 317-0196 */
@@ -1954,7 +1954,7 @@ ROM_END
 
 /**************************************************************************************************************************
     Moonwalker, Sega System 18
-    CPU: FD1094 (317-0157)
+    CPU: FD1094 (317-0157, version uses i8751(315-5437) known to be exist)
     ROM Board: 171-5873B
 */
 ROM_START( mwalkj )