diff --git a/src/mame/drivers/bigkarnk_ms.cpp b/src/mame/drivers/bigkarnk_ms.cpp
index b9f9beae74e..a2ea59de57b 100644
--- a/src/mame/drivers/bigkarnk_ms.cpp
+++ b/src/mame/drivers/bigkarnk_ms.cpp
@@ -10,7 +10,273 @@
     as with most of the 'Modular System' setups, the hardware is heavily modified from the original
     and consists of a multi-board stack in a cage, hence different driver.
 
-    TODO: PCB list
+    BOARDS
+
+ Board 5-1
+ ___________________________________________________________
+ |                      ________________  ________________  |
+ |                      |               | |               | |
+ |                      | IC21-27C010   | | IC27-27C010   | |
+ |                      |_______________| |_______________| |
+ |           ::::::::   ________________  ________________  |
+ |                      |               | |               | |
+ | __                   | IC20-27C010   | | IC26-27C010   | |
+ | | |                  |_______________| |_______________| |
+ | | |     __________   ________________  ________________  |
+ | | |     |_GAL16V8|   |               | |               | |
+ | | |        5148      | IC19-27C010   | | IC25-27C010   | |
+ | | |                  |_______________| |_______________| |
+ | | |     __________   ________________  ________________  |
+ | | |     |_GAL16V8|   |               | |               | |
+ | | |        5248      | EMPTY         | | EMPTY         | |
+ | | |                  |_______________| |_______________| |
+ | | |      _________   ________________  ________________  |
+ | | |      |74LS138N   |               | |               | |
+ | | |                  | EMPTY         | | EMPTY         | |
+ | | |                  |_______________| |_______________| |
+ | | |________________  ________________                    |
+ | |_||               | |               |                   |
+ |    | IC6-27C010    | | IC15-27C101   |                   |
+ |    |_______________| |_______________|                   |
+ |    ________________  ________________                    |
+ |    |               | |               |                   |
+ |    | IC5-27C010    | | IC14-27C101   |                   |
+ |    |_______________| |_______________|                   |
+ |    ________________  ________________                    |
+ |    |               | |               |     MODULAR       |
+ |    | IC4-27C010    | | IC13-27C101   |    SYSTEM 2       |
+ |    |_______________| |_______________|                   |
+ |    ________________  ________________                    |
+ |    |               | |               |                   |
+ |    | EMPTY         | | EMPTY         |                   |
+ |    |_______________| |_______________|                   |
+ |    ________________  ________________                    |
+ |    |               | |               |                   |
+ |    | EMPTY         | | EMPTY         |                   |
+ |    |_______________| |_______________|                   |
+ |    ________________  ________________                    |
+ |    |               | |               |                   |
+ |    | EMPTY         | | EMPTY         |                   |
+ |    |_______________| |_______________|                   |
+ |__________________________________________________________|
+
+ Board 7/4
+ __________________________________________________________
+ | _________  _________ __________  _________  _________ __|_
+ | 74LS163AN| 74LS163AN||_GAL20V8_| |74F174N_| |74S189BN||   |
+ |                         7648                          |   |
+ | _________  _________  _________  _________  _________ |   |
+ | |74LS157N| MC74F283N  |74LS273P| 74LS290B1| |74S189BN||   |
+ |                                                       |   |
+ | _________  _________  _________  _________  _________ |   |
+ | |74LS393N| MC74F283N 74HCTLS373N 74LS298B1| |74S189BN||   |
+ |                                                       |   |
+ | _________  __________  _____________  _________       |   |
+ | |74LS157N| |_PAL16V8_| |84256A-10L  | |74F174N_|      |   |
+ | _________  __75FL____  |____________| _________       |   |
+ | |74LS283B1 |74LS245B1| _____________  |74F174N_|      |   |
+ | _________  __________  |84256A-10L  | __________      |   |
+ | |74LS08N_| |74LS245B1| |____________| |74LS245B1|     |   |
+ | _________  __________    __________   _________       |   |
+ | |74LS20N | |74LS374B1|   |74LS273N |  |74LS74AN|      |   |
+ |                                                       |   |
+ | _________  __________    __________   _________       |___|
+ | |74LS04N_| |PALCE16V8|   |74LS374N_|  |74LS157N|        |
+ |               7348                                      |
+ | _________  __________    __________   _________         |
+ | |74LS00N_| |_GAL10V8_|   |74LS273N_| 74HCTLS367AN     __|_
+ |               7248                                    |   |
+ | _________  __________    __________   _________       |   |
+ | |74LS08N_| |74LS273N |   |74LS374N_|  PALCE16V8|      |   |
+ |                                          7448         |   |
+ | _________  __________    __________   _________       |   |
+ | |74LS74AN| |74LS273N_|   74LS367AN_|  |74LS373N|      |   |
+ |                                                       |   |
+ | _________  __________    __________   _________       |   |
+ | |74LS32N_| |74LS374N_|   74LS367AN_| GAL20V8-25LP     |   |
+ |                                          7148         |   |
+ | _________  _________  _________  _________  _________ |   |
+ | |74LS139N  |_74F74N_| |74LS157N| |74LS20N_| 74HCT373N |   |
+ | _________  _________  _________  _________  _________ |   |
+ | |74LS32N_| |74LS157N|  74HCT597E 74HCT597E 74HCT597E  |   |
+ | _________  _________  _________  _________  _________ |   |
+ | |74LS74AN| |74LS86B1| 74HCT597N  74HCT597N 74HCT597N  |   |
+ | _________  _________  _________  _________  _________ |   |
+ | |74LS74AN| |74LS86B1| 74HCT597N  74HCT597N  74HCT597N |   |
+ |            _________  _________  _________  _________ |   |
+ |            |74LS377N| 74HCT597N  74HCT597N  74HCT597N |   |
+ |            _________  _________  _________  _________ |___|
+ |            |74LS273N| 74LS169BN  74LS169BN  74LS169BN   |
+ |_________________________________________________________|
+
+Board 8
+ __________________________________________________________________________________
+ |           :::::::: <- Jumpers                                                   |
+ |          ________________  ________________  ________________  ________________ |
+ | _______  |               | |               | |               | |               ||
+ | 74LS175N | EMPTY         | | EMPTY         | | EMPTY         | | EMPTY         ||
+ |          |_______________| |_______________| |_______________| |_______________||
+ | _______  ________________  ________________  ________________  ________________ |
+ | 74LS175N |               | |               | |               | |               ||
+ |          | EMPTY         | | EMPTY         | | EMPTY         | | EMPTY         ||
+ | _______  |_______________| |_______________| |_______________| |_______________||
+ | 74LS175N ________________  ________________  ________________  ________________ |
+ |          |               | |               | |               | |               ||
+ | _______  | EMPTY         | | EMPTY         | | EMPTY         | | EMPTY         ||
+ | 74LS175N |_______________| |_______________| |_______________| |_______________||
+ |          ________________  ________________  ________________  ________________ |
+ | _______  |               | |               | |               | |               ||
+ | 74LS175N | EMPTY         | | EMPTY         | | EMPTY         | | EMPTY         ||
+ |          |_______________| |_______________| |_______________| |_______________||
+ |          ________________  ________________  ________________  ________________ |
+ | _______  |               | |               | |               | |               ||
+ | 74LS175N | EMPTY         | | EMPTY         | | EMPTY         | | EMPTY         ||
+ |          |_______________| |_______________| |_______________| |_______________||
+ |          ________________  ________________  ________________  ________________ |
+ | _______  |               | |               | |               | |               ||
+ | 74LS175N | KA-814        | | KA-821        | | KA-829        | | KA-836        ||
+ |          |_______________| |_______________| |_______________| |_______________||
+ | _______  ________________  ________________  ________________  ________________ |
+ | 74LS175N |               | |               | |               | |               ||
+ |          | KA-815        | | KA-822        | | KA-830        | | KA-837        ||
+ |          |_______________| |_______________| |_______________| |_______________||
+ |  _____________________________      _______  _________________________________  |
+ |__|                            |____74LS138N_|                                |__|
+    |____________________________|             |________________________________|
+
+ CPU Board 6/1
+ _____________________________________________
+ |             _______________              __|_
+ |             |              |             |   |
+ |             | 84256A-10L   |             |   |
+ |             |______________|   _______   |   |
+ |  _______   ________________    74LS138N  |   |
+ | 74LS367AB1 |               |             |   |
+ |            | EMPTY         |             |   |
+ |            |_______________|             |   |
+ |            ________________    _______   |   |
+ |  _______   |               |   74LS245B1 |   |
+ | 74LS367AB1 | IC20-27C010   |             |   |
+ |            |_______________|             |   |
+ |            ________________              |   |
+ |  _______   |               |   _______   |   |
+ | 74LS138N   | IC17-27C010   |   74LS374N  |   |
+ |            |_______________|             |   |
+ |             _______________              |   |
+ |             |              |   _______   |___|
+ |  _______    | 84256A-10L   |   74LS245B1   |
+ |  GAL16V8    |______________|               |
+ |    606     ________________                |
+ |  _______   |               |   _______     |
+ | 74LS174N   | EMPTY         |   74LS374N    |
+ |            |_______________|               |
+ |  _______   ________________                |
+ |  PAL16V8   |               |               |
+ |    648     | IC11-27C010   |   _______     |
+ |            |_______________|   74LS138N    |
+ |            ________________                |
+ |            |               |               |
+ |            | IC8-27C010    |               |
+ |            |_______________|   _______     |
+ | ___________________________    74LS32N     |
+ | |                          |               |
+ | |       TS68000CP12        |   _______     |
+ | |__________________________|   74LS20N     |
+ |                                            |
+ |  _______   ______   _______    _______     |
+ |  |74S74N    XTAL   74LS368AN   74LS132N    |
+ |           24.000MHz                        |
+ |____________________________________________|
+
+
+Board 51/1
+ _____________________________________________
+ |                                            |
+ | __________  ________ ________ ________     |
+ | |TO SUB 51| 74LS299N 74LS169N AM2149-35DC  |
+ | |_________| ________ ________ ________     |
+ |             74LS169J 74LS169N AM2149-35DC  |
+ |                                            |
+ | __________  ________ ________ ________     |
+ | |TO SUB 51| 74LS158N 74LS169B1 82S129N <- P0502
+ | |_________| ________ ________ ________     |
+ |             74LS299N 74LS169B1 74LS244N    |
+ |                                            |
+ | __________  ________ ________ ________     |
+ | |TO SUB 51| 74LS299N 74LS169B1 74LS244N    |
+ | |_________| ________ ________ ________     |
+ |             |74LS20N AM2149-35DC 74LS298N  |
+ |                                            |
+ | __________  ________ ________ ________     |
+ | |TO SUB 51| 74LS299N AM2149-35DC 74LS298N  |
+ | |_________|                                |
+ |   ________  ________ ________ ________  __ |
+ |   74LS273N  74LS00B1 |74LS86N 74LS244N  | ||
+ |                                         | ||
+_|_  ________  ________ ________ ________  |T||
+|  | 74LS08B1  74LS158N 74LS74B1 |74LS20B1 |O||
+|  |                                       | ||
+|  | ________  ________ ________ ________  |S||
+IC48->PAL16R6A 74LS393N 74LS368A 74LS373B1 |U||
+|  |                                       |B||
+|  | ________  ________ ________ ________  | ||
+|  | 74LS138PC 74LS283N |UM2148_||_EMPTY_| |5||
+|  |                                       |1||
+|  | ________  ________ ________ ________  | ||
+|  | 74LS175B1 74LS283N |UM2148_| 74LS273P | ||
+|  |                                       | ||
+|  | ________  ________ ________ ________  |_||
+|  | 74LS298N 74LS157B1 74LS157B1 74LS273P    |
+|  |                                          |
+|  | ________  ________ ________ ________     |
+|  | 74LS158N 74LS169B1 74LS169B1 74LS245N    |
+|__|                                          |
+ |____________________________________________|
+
+Sound Board 9/2
+ ____________   _____________   _______________
+ |           |_|_|_|_|_|_|_|_|_|             __|_
+ |                PRE-JAMMA            XTAL  |   |
+ | TDA2003                          28.00000 MHz |
+ |           ________   ________   ________  |   |
+ |           CNY 74-4   CNY 74-4   74LS368AN |   |
+ |                                           |   |
+ |           ________   ________   ________  |   |
+ |           CNY 74-4   CNY 74-4  |74S112N|  |   |
+ |                                           |   |
+ |           ________   ________   ________  |   |
+ |           74LS245N   74LS245B1  74LS298B1 |   |
+ |                                           |   |
+ | _______   ________   ________   ________  |   |
+ | |LM324N   OKI M5205  |GAL16V8   74LS298B1 |   |
+ |                        9148               |   |
+ |           ________   ________   ________  |   |
+ |           74LS157N   74LS267AN  74LS298B1 |   |
+ | _______                                   |___|
+ | |LM324N   ________   ________   ________    |
+ |           74LS273N   74LS138N  |74LS32N|    |
+ | D  74                                       |
+ | I  LS  ______        ________   ________    |
+ | P  24  Y3014B        74LS174N   74LS174N    |
+ | S  5N                                       |
+ |                      ________   ________    |
+ | D  74                74LS245N  CXK5814P-35L |
+ | I  LS  __________                           |
+ | P  24  |  YM3812 |   ________   ________    |
+ | S  5N  |_________|   74LS374N   74LS367AN   |
+ | _______   _________                         |
+ | 74LS138N UM6116K-3L  ________   ________    |
+ |         ____________ 74LS74AN  |GAL20V8|    |
+ | _______ |IC11-27C101             9248       |
+ | GAL16V8 |__________| _______ _______ ______ |
+ |   9348  ____________ 74LS32N 74LS393N 74LS163AN
+ | _______ |IC6-27C512|                        |
+ |74LS273N |__________| _______ _______ ______ |
+ |         ____________74LS393N 74F74N 74LS163AN
+ | _______ |Z0840006PSC                        |
+ | 74LS08N |_Z80 CPU__| _______ _______   ____ |
+ |                     74LS74AN 74LS368AN XTAL |
+ |________________________________________16.000 MHz
 
 */