diff --git a/src/emu/sound/es8712.c b/src/emu/sound/es8712.c
index 5f1f6dd85e4..f6087f83dc1 100644
--- a/src/emu/sound/es8712.c
+++ b/src/emu/sound/es8712.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Quench
 /**********************************************************************************************
  *
diff --git a/src/emu/sound/es8712.h b/src/emu/sound/es8712.h
index 5f5cffc43a6..ed05a4b3497 100644
--- a/src/emu/sound/es8712.h
+++ b/src/emu/sound/es8712.h
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Quench
 /* An interface for the ES8712 ADPCM chip */
 
diff --git a/src/mame/drivers/chinagat.c b/src/mame/drivers/chinagat.c
index 637043c5a30..4b67c197b5b 100644
--- a/src/mame/drivers/chinagat.c
+++ b/src/mame/drivers/chinagat.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:Nicola Salmoria,Paul Hampson
+// copyright-holders:Nicola Salmoria,Paul Hampson, Quench
 /*
 China Gate.
 By Paul Hampson from First Principles
diff --git a/src/mame/drivers/playmark.c b/src/mame/drivers/playmark.c
index 7bd289a854c..b63e207c5c8 100644
--- a/src/mame/drivers/playmark.c
+++ b/src/mame/drivers/playmark.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:Nicola Salmoria, Pierpaolo Prazzoli
+// copyright-holders:Nicola Salmoria, Pierpaolo Prazzoli, Quench
 /***************************************************************************
 
 Big Twin
diff --git a/src/mame/drivers/sslam.c b/src/mame/drivers/sslam.c
index 2ce73c8d0ad..2744f928dfa 100644
--- a/src/mame/drivers/sslam.c
+++ b/src/mame/drivers/sslam.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:Pierpaolo Prazzoli
+// copyright-holders:Pierpaolo Prazzoli, Quench
 /* Super Slam (c)1993 Playmark */
 
 /*
diff --git a/src/mame/drivers/toaplan1.c b/src/mame/drivers/toaplan1.c
index d31cb186bfa..e1a7dc09a64 100644
--- a/src/mame/drivers/toaplan1.c
+++ b/src/mame/drivers/toaplan1.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Darren Olafson, Quench
 /***************************************************************************
 
diff --git a/src/mame/drivers/toaplan2.c b/src/mame/drivers/toaplan2.c
index 0ed377d6e53..f704fde1ac2 100644
--- a/src/mame/drivers/toaplan2.c
+++ b/src/mame/drivers/toaplan2.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:Quench, Yochizo
+// license:BSD-3-Clause
+// copyright-holders:Quench, Yochizo, David Haywood
 /*****************************************************************************
 
         ToaPlan      game hardware from 1991 - 1994
diff --git a/src/mame/drivers/twincobr.c b/src/mame/drivers/twincobr.c
index 62e8aaeb6d0..98991e2b173 100644
--- a/src/mame/drivers/twincobr.c
+++ b/src/mame/drivers/twincobr.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Quench
 /****************************************************************************
 
diff --git a/src/mame/drivers/wardner.c b/src/mame/drivers/wardner.c
index 9a968bce97d..d6c1d4232b7 100644
--- a/src/mame/drivers/wardner.c
+++ b/src/mame/drivers/wardner.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Quench
 /***************************************************************************
 
diff --git a/src/mame/includes/playmark.h b/src/mame/includes/playmark.h
index 7cfba6c474c..2d609ea518f 100644
--- a/src/mame/includes/playmark.h
+++ b/src/mame/includes/playmark.h
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:Nicola Salmoria, Pierpaolo Prazzoli
+// copyright-holders:Nicola Salmoria, Pierpaolo Prazzoli, Quench
 #include "sound/okim6295.h"
 #include "machine/eepromser.h"
 #include "cpu/pic16c5x/pic16c5x.h"
diff --git a/src/mame/includes/sslam.h b/src/mame/includes/sslam.h
index 9ffee056203..c52ee6f3672 100644
--- a/src/mame/includes/sslam.h
+++ b/src/mame/includes/sslam.h
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:Pierpaolo Prazzoli
+// copyright-holders:Pierpaolo Prazzoli, Quench
 #include "sound/okim6295.h"
 
 class sslam_state : public driver_device
diff --git a/src/mame/includes/toaplan1.h b/src/mame/includes/toaplan1.h
index 3e93d47bdaa..6d1f773dc65 100644
--- a/src/mame/includes/toaplan1.h
+++ b/src/mame/includes/toaplan1.h
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Darren Olafson, Quench
 /***************************************************************************
                 ToaPlan game hardware from 1988-1991
diff --git a/src/mame/includes/toaplan2.h b/src/mame/includes/toaplan2.h
index 4f4b0dadc94..85e5ccc0a0d 100644
--- a/src/mame/includes/toaplan2.h
+++ b/src/mame/includes/toaplan2.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:Quench, Yochizo
+// license:BSD-3-Clause
+// copyright-holders:Quench, Yochizo, David Haywood
 /**************** Machine stuff ******************/
 //#define USE_HD64x180          /* Define if CPU support is available */
 //#define TRUXTON2_STEREO       /* Uncomment to hear truxton2 music in stereo */
diff --git a/src/mame/includes/toaplipt.h b/src/mame/includes/toaplipt.h
index 0ab6f05eacc..2297781f6b1 100644
--- a/src/mame/includes/toaplipt.h
+++ b/src/mame/includes/toaplipt.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Quench, Stephh 
 /*******************************************************************************
 
     Input port macros used by many games in multiple Toaplan drivers
diff --git a/src/mame/includes/twincobr.h b/src/mame/includes/twincobr.h
index 2f59182342e..bd9ae4478d6 100644
--- a/src/mame/includes/twincobr.h
+++ b/src/mame/includes/twincobr.h
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Quench
 /***************************************************************************
         Twincobr/Flying Shark/Wardner  game hardware from 1986-1987
diff --git a/src/mame/machine/toaplan1.c b/src/mame/machine/toaplan1.c
index 63c0a3a7914..de9342b4007 100644
--- a/src/mame/machine/toaplan1.c
+++ b/src/mame/machine/toaplan1.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Darren Olafson, Quench
 /***************************************************************************
                 ToaPlan game hardware from 1988-1991
diff --git a/src/mame/machine/twincobr.c b/src/mame/machine/twincobr.c
index 493da43a303..e727403cc24 100644
--- a/src/mame/machine/twincobr.c
+++ b/src/mame/machine/twincobr.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Quench
 /****************************************************************************
  *  Twin Cobra                                                              *
diff --git a/src/mame/video/gp9001.c b/src/mame/video/gp9001.c
index e0af85cb684..711eb1b0199 100644
--- a/src/mame/video/gp9001.c
+++ b/src/mame/video/gp9001.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Quench, David Haywood
 /* GP9001 Video Controller */
 
 /***************************************************************************
diff --git a/src/mame/video/gp9001.h b/src/mame/video/gp9001.h
index b8140152b96..e6a338ce7be 100644
--- a/src/mame/video/gp9001.h
+++ b/src/mame/video/gp9001.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Quench, David Haywood
 /* GP9001 Video Controller */
 
 struct gp9001layeroffsets
diff --git a/src/mame/video/playmark.c b/src/mame/video/playmark.c
index 578900a8d8e..7639338e75d 100644
--- a/src/mame/video/playmark.c
+++ b/src/mame/video/playmark.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:Nicola Salmoria, Pierpaolo Prazzoli
+// copyright-holders:Nicola Salmoria, Pierpaolo Prazzoli, Quench
 #include "emu.h"
 #include "includes/playmark.h"
 
diff --git a/src/mame/video/sslam.c b/src/mame/video/sslam.c
index 5f6fa2849d5..ee9af33bc8c 100644
--- a/src/mame/video/sslam.c
+++ b/src/mame/video/sslam.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:Pierpaolo Prazzoli
+// copyright-holders:Pierpaolo Prazzoli, Quench
 /* Super Slam - Video Hardware */
 
 #include "emu.h"
diff --git a/src/mame/video/toaplan1.c b/src/mame/video/toaplan1.c
index f95232675a1..2363ed2510b 100644
--- a/src/mame/video/toaplan1.c
+++ b/src/mame/video/toaplan1.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Darren Olafson, Quench
 /***************************************************************************
 
diff --git a/src/mame/video/toaplan2.c b/src/mame/video/toaplan2.c
index e954ed7698a..b47d98d2015 100644
--- a/src/mame/video/toaplan2.c
+++ b/src/mame/video/toaplan2.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:Quench, Yochizo
+// license:BSD-3-Clause
+// copyright-holders:Quench, Yochizo, David Haywood
 /***************************************************************************
 
  Functions to emulate additional video hardware on several Toaplan2 games.
diff --git a/src/mame/video/toaplan_scu.c b/src/mame/video/toaplan_scu.c
index 3117fb8eb00..0fe17964308 100644
--- a/src/mame/video/toaplan_scu.c
+++ b/src/mame/video/toaplan_scu.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Quench
 /* Toaplan Sprite Controller 'SCU'
  used by video/twincobr.c (including wardner)
  and rallybik in toaplan1.c
diff --git a/src/mame/video/toaplan_scu.h b/src/mame/video/toaplan_scu.h
index d17c33eb306..9cdd1cbd7b6 100644
--- a/src/mame/video/toaplan_scu.h
+++ b/src/mame/video/toaplan_scu.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Quench
 /* toaplan SCU */
 
 
diff --git a/src/mame/video/twincobr.c b/src/mame/video/twincobr.c
index 1016d7fa771..fbac8c6915c 100644
--- a/src/mame/video/twincobr.c
+++ b/src/mame/video/twincobr.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:Quench
+// license:BSD-3-Clause
+// copyright-holders:Quench, Nicola Salmoria
 /***************************************************************************
   video.c