diff --git a/src/emu/machine/upd4701.c b/src/emu/machine/upd4701.c
index da1a9a796ae..4a7adfda291 100644
--- a/src/emu/machine/upd4701.c
+++ b/src/emu/machine/upd4701.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:smf
 /***************************************************************************
 
     NEC uPD4701
diff --git a/src/emu/machine/upd4701.h b/src/emu/machine/upd4701.h
index 9b9aaa530c4..e8cb0e0243f 100644
--- a/src/emu/machine/upd4701.h
+++ b/src/emu/machine/upd4701.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:smf
 /***************************************************************************
 
     NEC uPD4701
diff --git a/src/emu/machine/wd17xx.c b/src/emu/machine/wd17xx.c
index 9782cca826f..c87c2911877 100644
--- a/src/emu/machine/wd17xx.c
+++ b/src/emu/machine/wd17xx.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nathan Woods, Kevin Thacker, Phill Harvey-Smith, Robbbert, Curt Coder
 /***************************************************************************
 
     !!! DEPRECATED, USE src/emu/wd_fdc.h FOR NEW DRIVERS !!!
diff --git a/src/emu/machine/wd17xx.h b/src/emu/machine/wd17xx.h
index a4e87bda9fc..7fe3e48ea1f 100644
--- a/src/emu/machine/wd17xx.h
+++ b/src/emu/machine/wd17xx.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nathan Woods, Kevin Thacker, Phill Harvey-Smith, Robbbert, Curt Coder
 /*********************************************************************
 
     !!! DEPRECATED, USE src/emu/wd_fdc.h FOR NEW DRIVERS !!!
diff --git a/src/emu/sound/cdda.c b/src/emu/sound/cdda.c
index 1ef050b7dcb..1b7c81c1172 100644
--- a/src/emu/sound/cdda.c
+++ b/src/emu/sound/cdda.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles,smf
 /*
     CD-DA "Red Book" audio sound hardware handler
     Relies on the actual CD logic and reading in cdrom.c.
diff --git a/src/emu/sound/cdda.h b/src/emu/sound/cdda.h
index 92bd9ebc9d9..7650348a099 100644
--- a/src/emu/sound/cdda.h
+++ b/src/emu/sound/cdda.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles,smf
 #pragma once
 
 #ifndef __CDDA_H__
diff --git a/src/emu/sound/cem3394.c b/src/emu/sound/cem3394.c
index 09361fbdc66..f5af2dd2b86 100644
--- a/src/emu/sound/cem3394.c
+++ b/src/emu/sound/cem3394.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
 /***************************************************************************
 
     CEM3394 sound driver.
diff --git a/src/emu/sound/cem3394.h b/src/emu/sound/cem3394.h
index d695999b903..65290aefce9 100644
--- a/src/emu/sound/cem3394.h
+++ b/src/emu/sound/cem3394.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
 #pragma once
 
 #ifndef __CEM3394_H__
diff --git a/src/emu/sound/digitalk.c b/src/emu/sound/digitalk.c
index 5e63193383e..cf5d99d0c07 100644
--- a/src/emu/sound/digitalk.c
+++ b/src/emu/sound/digitalk.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
 #include "emu.h"
 #include "digitalk.h"
 
diff --git a/src/emu/sound/digitalk.h b/src/emu/sound/digitalk.h
index 143e6a29df0..fc2dd497f09 100644
--- a/src/emu/sound/digitalk.h
+++ b/src/emu/sound/digitalk.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
 #ifndef _DIGITALKER_H_
 #define _DIGITALKER_H_
 
diff --git a/src/emu/sound/es8712.c b/src/emu/sound/es8712.c
index b3306e8970d..5f1f6dd85e4 100644
--- a/src/emu/sound/es8712.c
+++ b/src/emu/sound/es8712.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Quench
 /**********************************************************************************************
  *
  *  Streaming single channel ADPCM core for the ES8712 chip
diff --git a/src/emu/sound/es8712.h b/src/emu/sound/es8712.h
index 5c2810f56d8..5f5cffc43a6 100644
--- a/src/emu/sound/es8712.h
+++ b/src/emu/sound/es8712.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Quench
 /* An interface for the ES8712 ADPCM chip */
 
 #pragma once
diff --git a/src/emu/sound/filter.c b/src/emu/sound/filter.c
index ee760fb569c..3d80966d029 100644
--- a/src/emu/sound/filter.c
+++ b/src/emu/sound/filter.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Derrick Renaud, Couriersud
 #include "emu.h"
 #include "filter.h"
 
diff --git a/src/emu/sound/filter.h b/src/emu/sound/filter.h
index 9ce54348a84..5e671e85545 100644
--- a/src/emu/sound/filter.h
+++ b/src/emu/sound/filter.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Derrick Renaud, Couriersud
 #pragma once
 
 #ifndef __FILTER_H__
diff --git a/src/emu/sound/flt_rc.c b/src/emu/sound/flt_rc.c
index 37299b23536..5fc0a7df882 100644
--- a/src/emu/sound/flt_rc.c
+++ b/src/emu/sound/flt_rc.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Derrick Renaud, Couriersud
 #include "emu.h"
 #include "flt_rc.h"
 
diff --git a/src/emu/sound/flt_rc.h b/src/emu/sound/flt_rc.h
index d99b27195bd..0ea52c6972a 100644
--- a/src/emu/sound/flt_rc.h
+++ b/src/emu/sound/flt_rc.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Derrick Renaud, Couriersud
 #pragma once
 
 #ifndef __FLT_RC_H__
diff --git a/src/emu/sound/flt_vol.c b/src/emu/sound/flt_vol.c
index 3f553704adb..0012f3fc4db 100644
--- a/src/emu/sound/flt_vol.c
+++ b/src/emu/sound/flt_vol.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Derrick Renaud, Couriersud
 #include "emu.h"
 #include "flt_vol.h"
 
diff --git a/src/emu/sound/flt_vol.h b/src/emu/sound/flt_vol.h
index 437681d9851..20ce17a58e9 100644
--- a/src/emu/sound/flt_vol.h
+++ b/src/emu/sound/flt_vol.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Derrick Renaud, Couriersud
 #pragma once
 
 #ifndef __FLT_VOL_H__
diff --git a/src/emu/sound/hc55516.c b/src/emu/sound/hc55516.c
index 929b27e0e9c..7165fd28158 100644
--- a/src/emu/sound/hc55516.c
+++ b/src/emu/sound/hc55516.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
 /*****************************************************************************
 
     Harris HC-55516 (and related) emulator
diff --git a/src/emu/sound/hc55516.h b/src/emu/sound/hc55516.h
index 182bce3cc49..a6323f8ee4f 100644
--- a/src/emu/sound/hc55516.h
+++ b/src/emu/sound/hc55516.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
 #pragma once
 
 #ifndef __HC55516_H__
diff --git a/src/emu/sound/k007232.c b/src/emu/sound/k007232.c
index fd7b61371ee..989a9693ee3 100644
--- a/src/emu/sound/k007232.c
+++ b/src/emu/sound/k007232.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nicola Salmoria
 /*********************************************************/
 /*    Konami PCM controller                              */
 /*********************************************************/
diff --git a/src/emu/sound/k007232.h b/src/emu/sound/k007232.h
index a52df169680..236fbd26671 100644
--- a/src/emu/sound/k007232.h
+++ b/src/emu/sound/k007232.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nicola Salmoria
 /*********************************************************/
 /*    Konami PCM controller                              */
 /*********************************************************/
diff --git a/src/emu/sound/k053260.c b/src/emu/sound/k053260.c
index 75497314afe..776c0b89716 100644
--- a/src/emu/sound/k053260.c
+++ b/src/emu/sound/k053260.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Ernesto Corvi
 /*********************************************************
 
     Konami 053260 KDSC
diff --git a/src/emu/sound/k053260.h b/src/emu/sound/k053260.h
index be2332ceb2b..2652bb09e91 100644
--- a/src/emu/sound/k053260.h
+++ b/src/emu/sound/k053260.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Ernesto Corvi
 /*********************************************************
 
     Konami 053260 KDSC
diff --git a/src/emu/sound/k054539.c b/src/emu/sound/k054539.c
index c749f38945e..965ed5b9b58 100644
--- a/src/emu/sound/k054539.c
+++ b/src/emu/sound/k054539.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
 /*********************************************************
 
     Konami 054539 (TOP) PCM Sound Chip
diff --git a/src/emu/sound/k054539.h b/src/emu/sound/k054539.h
index c246089afdd..d6fa2dc73a1 100644
--- a/src/emu/sound/k054539.h
+++ b/src/emu/sound/k054539.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
 /*********************************************************
 
     Konami 054539 PCM Sound Chip
diff --git a/src/emu/sound/k056800.c b/src/emu/sound/k056800.c
index 20842e1cf31..1534783f8de 100644
--- a/src/emu/sound/k056800.c
+++ b/src/emu/sound/k056800.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Ville Linde
 /***********************************************************************
 
     Konami K056800 (MIRAC)
diff --git a/src/emu/sound/k056800.h b/src/emu/sound/k056800.h
index 07aa408a2d2..7a14647b3f1 100644
--- a/src/emu/sound/k056800.h
+++ b/src/emu/sound/k056800.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Ville Linde
 /*********************************************************
 
     Konami 056800 MIRAC sound interface
diff --git a/src/emu/sound/l7a1045_l6028_dsp_a.c b/src/emu/sound/l7a1045_l6028_dsp_a.c
index 04cf10a392d..9f5f6cbe965 100644
--- a/src/emu/sound/l7a1045_l6028_dsp_a.c
+++ b/src/emu/sound/l7a1045_l6028_dsp_a.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:LGPL-2.1+
+// copyright-holders:David Haywood, Angelo Salese, ElSemi, Andrew Gardner, Andrew Zaferakis
 /***************************************************************************
 
     L7A1045 L6028 DSP-A
diff --git a/src/emu/sound/l7a1045_l6028_dsp_a.h b/src/emu/sound/l7a1045_l6028_dsp_a.h
index 314fc34b554..76c6a9a6744 100644
--- a/src/emu/sound/l7a1045_l6028_dsp_a.h
+++ b/src/emu/sound/l7a1045_l6028_dsp_a.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:LGPL-2.1+
+// copyright-holders:David Haywood, Angelo Salese, ElSemi, Andrew Gardner, Andrew Zaferakis
 //**************************************************************************
 //  TYPE DEFINITIONS
 //**************************************************************************
diff --git a/src/emu/sound/lmc1992.c b/src/emu/sound/lmc1992.c
index 3984888f66f..c15b7aa025c 100644
--- a/src/emu/sound/lmc1992.c
+++ b/src/emu/sound/lmc1992.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
 /**********************************************************************
 
     LMC1992 Digitally-Controlled Stereo Tone and Volume Circuit with
diff --git a/src/emu/sound/lmc1992.h b/src/emu/sound/lmc1992.h
index fda581f028d..b47d1e0c9bb 100644
--- a/src/emu/sound/lmc1992.h
+++ b/src/emu/sound/lmc1992.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
 /**********************************************************************
 
     LMC1992 Digitally-Controlled Stereo Tone and Volume Circuit with
diff --git a/src/emu/sound/mas3507d.c b/src/emu/sound/mas3507d.c
index 7f2bb4a9eb9..a7be9bb4ba1 100644
--- a/src/emu/sound/mas3507d.c
+++ b/src/emu/sound/mas3507d.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
 //
 // MAS 3507D MPEG audio decoder
 //
diff --git a/src/emu/sound/mas3507d.h b/src/emu/sound/mas3507d.h
index 49aee634813..0dad34bfe61 100644
--- a/src/emu/sound/mas3507d.h
+++ b/src/emu/sound/mas3507d.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
 #pragma once
 
 #ifndef __MAS3507D_H__
diff --git a/src/emu/sound/mos6581.c b/src/emu/sound/mos6581.c
index ee0eac4ef9d..8a98a373683 100644
--- a/src/emu/sound/mos6581.c
+++ b/src/emu/sound/mos6581.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nathan Woods, Curt Coder
 /**********************************************************************
 
     MOS 6581/8580 Sound Interface Device emulation
diff --git a/src/emu/sound/mos6581.h b/src/emu/sound/mos6581.h
index c199827d291..998577f8e9d 100644
--- a/src/emu/sound/mos6581.h
+++ b/src/emu/sound/mos6581.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nathan Woods, Curt Coder
 /**********************************************************************
 
     MOS 6581/8580 Sound Interface Device emulation
diff --git a/src/emu/sound/mos7360.c b/src/emu/sound/mos7360.c
index 5ab22be3734..453306e2376 100644
--- a/src/emu/sound/mos7360.c
+++ b/src/emu/sound/mos7360.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
 /**********************************************************************
 
     MOS 7360/8360 Text Edit Device (TED) emulation
diff --git a/src/emu/sound/mos7360.h b/src/emu/sound/mos7360.h
index 803811e0758..61e464df399 100644
--- a/src/emu/sound/mos7360.h
+++ b/src/emu/sound/mos7360.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
 /***************************************************************************
 
     MOS 7360/8360 Text Edit Device (TED) emulation
diff --git a/src/emu/sound/msm5232.c b/src/emu/sound/msm5232.c
index 29fa99cb4d4..6bd36aac09e 100644
--- a/src/emu/sound/msm5232.c
+++ b/src/emu/sound/msm5232.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Jarek Burczynski, Hiromitsu Shioya
 #include "emu.h"
 
 #include "msm5232.h"
diff --git a/src/emu/sound/msm5232.h b/src/emu/sound/msm5232.h
index c0cb64d9306..a7e30e72a57 100644
--- a/src/emu/sound/msm5232.h
+++ b/src/emu/sound/msm5232.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Jarek Burczynski, Hiromitsu Shioya
 #pragma once
 
 #ifndef __MSM5232_H__
diff --git a/src/emu/sound/n63701x.c b/src/emu/sound/n63701x.c
index 608a40d3bbf..e76db1e1fc4 100644
--- a/src/emu/sound/n63701x.c
+++ b/src/emu/sound/n63701x.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nicola Salmoria
 /***************************************************************************
 
 An Hitachi HD637A01X0 MCU programmed to act as a sample player.
diff --git a/src/emu/sound/n63701x.h b/src/emu/sound/n63701x.h
index 4539c449179..9af9bfc62ab 100644
--- a/src/emu/sound/n63701x.h
+++ b/src/emu/sound/n63701x.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nicola Salmoria
 #pragma once
 
 #ifndef __N63701X_H__
diff --git a/src/emu/sound/namco.c b/src/emu/sound/namco.c
index bb7e1019110..596ad6311d5 100644
--- a/src/emu/sound/namco.c
+++ b/src/emu/sound/namco.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nicola Salmoria
 /***************************************************************************
 
     NAMCO sound driver.
diff --git a/src/emu/sound/namco.h b/src/emu/sound/namco.h
index a39684c7bb8..4eb91f3db8a 100644
--- a/src/emu/sound/namco.h
+++ b/src/emu/sound/namco.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nicola Salmoria
 #pragma once
 
 #ifndef __NAMCO_H__
diff --git a/src/emu/sound/okiadpcm.c b/src/emu/sound/okiadpcm.c
index e5431629232..f37a8e7750b 100644
--- a/src/emu/sound/okiadpcm.c
+++ b/src/emu/sound/okiadpcm.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Andrew Gardner
 /***************************************************************************
 
     okiadpcm.h
diff --git a/src/emu/sound/okiadpcm.h b/src/emu/sound/okiadpcm.h
index 517714cb416..51df4b2dbb2 100644
--- a/src/emu/sound/okiadpcm.h
+++ b/src/emu/sound/okiadpcm.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Andrew Gardner
 /***************************************************************************
 
     okiadpcm.h
diff --git a/src/emu/sound/okim6258.c b/src/emu/sound/okim6258.c
index d4e7c71aa19..d26810e33d5 100644
--- a/src/emu/sound/okim6258.c
+++ b/src/emu/sound/okim6258.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Barry Rodewald
 /**********************************************************************************************
  *
  *   OKI MSM6258 ADPCM
diff --git a/src/emu/sound/okim6258.h b/src/emu/sound/okim6258.h
index af1b662a3a9..c4cfed1c82c 100644
--- a/src/emu/sound/okim6258.h
+++ b/src/emu/sound/okim6258.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Barry Rodewald
 #pragma once
 
 #ifndef __OKIM6258_H__
diff --git a/src/emu/sound/okim9810.c b/src/emu/sound/okim9810.c
index 1503d0e7c80..311138e8df7 100644
--- a/src/emu/sound/okim9810.c
+++ b/src/emu/sound/okim9810.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Andrew Gardner
 /***************************************************************************
 
     okim9810.h
diff --git a/src/emu/sound/okim9810.h b/src/emu/sound/okim9810.h
index 8d5a88c7252..665c9a9fdee 100644
--- a/src/emu/sound/okim9810.h
+++ b/src/emu/sound/okim9810.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Andrew Gardner
 /***************************************************************************
 
     okim9810.h
diff --git a/src/emu/sound/qs1000.c b/src/emu/sound/qs1000.c
index 8be8794694c..0d08755dc27 100644
--- a/src/emu/sound/qs1000.c
+++ b/src/emu/sound/qs1000.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Phil Bennett
 /***************************************************************************
 
     qs1000.c
diff --git a/src/emu/sound/qs1000.h b/src/emu/sound/qs1000.h
index 180f05fab02..d8137d143a6 100644
--- a/src/emu/sound/qs1000.h
+++ b/src/emu/sound/qs1000.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Phil Bennett
 /***************************************************************************
 
     qs1000.h
diff --git a/src/emu/sound/rf5c68.c b/src/emu/sound/rf5c68.c
index c4efa4e6045..4bf5e56e774 100644
--- a/src/emu/sound/rf5c68.c
+++ b/src/emu/sound/rf5c68.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galiber
 /*********************************************************/
 /*    ricoh RF5C68(or clone) PCM controller              */
 /*********************************************************/
diff --git a/src/emu/sound/rf5c68.h b/src/emu/sound/rf5c68.h
index 7e204e3021d..8f81d3afbf3 100644
--- a/src/emu/sound/rf5c68.h
+++ b/src/emu/sound/rf5c68.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galiber
 /*********************************************************/
 /*    ricoh RF5C68(or clone) PCM controller              */
 /*********************************************************/
diff --git a/src/emu/sound/sb0400.c b/src/emu/sound/sb0400.c
index 238f7ff61aa..33873324683 100644
--- a/src/emu/sound/sb0400.c
+++ b/src/emu/sound/sb0400.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galiber
 #include "sb0400.h"
 
 const device_type SB0400 = &device_creator<sb0400_device>;
diff --git a/src/emu/sound/sb0400.h b/src/emu/sound/sb0400.h
index 666d242eb0a..d3e27b627ac 100644
--- a/src/emu/sound/sb0400.h
+++ b/src/emu/sound/sb0400.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galiber
 // Creative labs SB0400 Audigy2 Value
 
 #ifndef SB0400_H
diff --git a/src/emu/sound/segapcm.c b/src/emu/sound/segapcm.c
index 112dba3d994..9e2ece97935 100644
--- a/src/emu/sound/segapcm.c
+++ b/src/emu/sound/segapcm.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Hiromitsu Shioya
 /*********************************************************/
 /*    SEGA 16ch 8bit PCM                                 */
 /*********************************************************/
diff --git a/src/emu/sound/segapcm.h b/src/emu/sound/segapcm.h
index 45c567f141e..7be02f3c249 100644
--- a/src/emu/sound/segapcm.h
+++ b/src/emu/sound/segapcm.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Hiromitsu Shioya
 /*********************************************************/
 /*    SEGA 8bit PCM                                      */
 /*********************************************************/
diff --git a/src/emu/sound/snkwave.c b/src/emu/sound/snkwave.c
index ffc56838e20..bc9cca6b59c 100644
--- a/src/emu/sound/snkwave.c
+++ b/src/emu/sound/snkwave.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nicola Salmoria
 /***************************************************************************
 
     SNK Wave sound driver.
diff --git a/src/emu/sound/snkwave.h b/src/emu/sound/snkwave.h
index 89bc70c84a8..f613ca3ff5b 100644
--- a/src/emu/sound/snkwave.h
+++ b/src/emu/sound/snkwave.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nicola Salmoria
 #pragma once
 
 #ifndef __SNKWAVE_H__
diff --git a/src/emu/sound/speaker.c b/src/emu/sound/speaker.c
index 83bc9697b74..7872351a0e3 100644
--- a/src/emu/sound/speaker.c
+++ b/src/emu/sound/speaker.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nicola Salmoria
 /***************************************************************************
 
     speaker.c
diff --git a/src/emu/sound/speaker.h b/src/emu/sound/speaker.h
index 60849926f00..67819769926 100644
--- a/src/emu/sound/speaker.h
+++ b/src/emu/sound/speaker.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Nicola Salmoria
 /**********************************************************************
 
     speaker.h
diff --git a/src/emu/sound/spu.h b/src/emu/sound/spu.h
index fa4930cafd6..d76da751a65 100644
--- a/src/emu/sound/spu.h
+++ b/src/emu/sound/spu.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:pSXAuthor, R.Belmont
 #pragma once
 
 #ifndef __SPU_H__
diff --git a/src/emu/sound/t6w28.c b/src/emu/sound/t6w28.c
index b9c0b62775c..25303ec4f1b 100644
--- a/src/emu/sound/t6w28.c
+++ b/src/emu/sound/t6w28.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol
 /***************************************************************************
 
   t6w28.c (based on sn74696.c)
diff --git a/src/emu/sound/t6w28.h b/src/emu/sound/t6w28.h
index ba996f8f992..7bee03bbc6b 100644
--- a/src/emu/sound/t6w28.h
+++ b/src/emu/sound/t6w28.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol
 #pragma once
 
 #ifndef __T6W28_H__
diff --git a/src/emu/sound/tms3615.c b/src/emu/sound/tms3615.c
index b63deeffee3..3ccf9159b9d 100644
--- a/src/emu/sound/tms3615.c
+++ b/src/emu/sound/tms3615.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Juergen Buchmueller
 #include "emu.h"
 #include "tms3615.h"
 
diff --git a/src/emu/sound/tms3615.h b/src/emu/sound/tms3615.h
index da89a5ee18c..f68a4718ef1 100644
--- a/src/emu/sound/tms3615.h
+++ b/src/emu/sound/tms3615.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Juergen Buchmueller
 #pragma once
 
 #ifndef __TMS3615_H__
diff --git a/src/emu/sound/tms36xx.c b/src/emu/sound/tms36xx.c
index 74910a0813f..3bc5425bade 100644
--- a/src/emu/sound/tms36xx.c
+++ b/src/emu/sound/tms36xx.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Juergen Buchmueller
 #include "emu.h"
 #include "tms36xx.h"
 
diff --git a/src/emu/sound/tms36xx.h b/src/emu/sound/tms36xx.h
index 1dce15b0086..b15e5908cc5 100644
--- a/src/emu/sound/tms36xx.h
+++ b/src/emu/sound/tms36xx.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Juergen Buchmueller
 #pragma once
 
 #ifndef __TMS36XX_H__
diff --git a/src/emu/sound/upd7752.c b/src/emu/sound/upd7752.c
index 9b996f111e8..bebe180f722 100644
--- a/src/emu/sound/upd7752.c
+++ b/src/emu/sound/upd7752.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Angelo Salese
 /***************************************************************************
 
 NEC uPD7752 Voice Synthesizing LSI
diff --git a/src/emu/sound/upd7752.h b/src/emu/sound/upd7752.h
index 2a818102c09..eabd705e047 100644
--- a/src/emu/sound/upd7752.h
+++ b/src/emu/sound/upd7752.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Angelo Salese
 /***************************************************************************
 
 Template for skeleton device
diff --git a/src/emu/sound/vrender0.c b/src/emu/sound/vrender0.c
index 459310c279a..b13f4556525 100644
--- a/src/emu/sound/vrender0.c
+++ b/src/emu/sound/vrender0.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:ElSemi
 #include "emu.h"
 #include "vrender0.h"
 
diff --git a/src/emu/sound/vrender0.h b/src/emu/sound/vrender0.h
index 11d1e17e2c0..9baaefac203 100644
--- a/src/emu/sound/vrender0.h
+++ b/src/emu/sound/vrender0.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:ElSemi
 #pragma once
 
 #ifndef __VRENDER0_H__
diff --git a/src/emu/video/clgd542x.c b/src/emu/video/clgd542x.c
index 4c1e0731e35..cf3e3e04c05 100644
--- a/src/emu/video/clgd542x.c
+++ b/src/emu/video/clgd542x.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Barry Rodewald
 /*
 
     Cirrus Logic GD542x/3x video chipsets
diff --git a/src/emu/video/clgd542x.h b/src/emu/video/clgd542x.h
index b4572ddc010..371136ba489 100644
--- a/src/emu/video/clgd542x.h
+++ b/src/emu/video/clgd542x.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Barry Rodewald
 /*
 
     Cirrus Logic GD542x/3x video chipsets
diff --git a/src/emu/video/dl1416.c b/src/emu/video/dl1416.c
index 331281045f0..b017e9994e1 100644
--- a/src/emu/video/dl1416.c
+++ b/src/emu/video/dl1416.c
@@ -1,11 +1,9 @@
-// license:???
-// copyright-holders:???
+// license:GPL-2.0+
+// copyright-holders:Dirk Best
 /*****************************************************************************
  *
  *  DL1416
  *
- *  license: MAME, GPL-2.0+
- *  copyright-holders: Dirk Best
  *
  * 4-Digit 16-Segment Alphanumeric Intelligent Display
  * with Memory/Decoder/Driver
diff --git a/src/emu/video/dl1416.h b/src/emu/video/dl1416.h
index a9862b47a94..6b77a75edac 100644
--- a/src/emu/video/dl1416.h
+++ b/src/emu/video/dl1416.h
@@ -1,12 +1,9 @@
-// license:???
-// copyright-holders:???
+// license:GPL-2.0+
+// copyright-holders:Dirk Best
 /*****************************************************************************
  *
  *  DL1416
  *
- *  license: MAME, GPL-2.0+
- *  copyright-holders: Dirk Best
- *
  * 4-Digit 16-Segment Alphanumeric Intelligent Display
  * with Memory/Decoder/Driver
  *
diff --git a/src/emu/video/ef9340_1.c b/src/emu/video/ef9340_1.c
index f74743d5724..d3dd81f5d2e 100644
--- a/src/emu/video/ef9340_1.c
+++ b/src/emu/video/ef9340_1.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol
 /***************************************************************************
 
     ef9340_1.h
diff --git a/src/emu/video/ef9340_1.h b/src/emu/video/ef9340_1.h
index c76adf49437..3aa2d6539d9 100644
--- a/src/emu/video/ef9340_1.h
+++ b/src/emu/video/ef9340_1.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol
 /***************************************************************************
 
     ef9340_1.h
diff --git a/src/emu/video/ef9341_chargen.h b/src/emu/video/ef9341_chargen.h
index 40d844fd5be..d33db19d18e 100644
--- a/src/emu/video/ef9341_chargen.h
+++ b/src/emu/video/ef9341_chargen.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol
 static const UINT8 ef9341_char_set[2][128][10] = {
 	// Alphanumeric character set (128 characters)
 	{
diff --git a/src/emu/video/fixfreq.c b/src/emu/video/fixfreq.c
index f26d0affd2b..595c0f607fc 100644
--- a/src/emu/video/fixfreq.c
+++ b/src/emu/video/fixfreq.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Couriersud
 /***************************************************************************
 
     fixfreq.h
diff --git a/src/emu/video/fixfreq.h b/src/emu/video/fixfreq.h
index fbc499c9b35..2c9979d5bad 100644
--- a/src/emu/video/fixfreq.h
+++ b/src/emu/video/fixfreq.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Couriersud
 /***************************************************************************
 
     fixfreq.h
diff --git a/src/emu/video/gf4500.c b/src/emu/video/gf4500.c
index bb0e8c75742..8fa8cdcb19b 100644
--- a/src/emu/video/gf4500.c
+++ b/src/emu/video/gf4500.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Tim Schuerewegen
 /*
 
     NVIDIA GoForce 4500
diff --git a/src/emu/video/gf4500.h b/src/emu/video/gf4500.h
index fc78d535a80..382f15adc2c 100644
--- a/src/emu/video/gf4500.h
+++ b/src/emu/video/gf4500.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Tim Schuerewegen
 /*
 
     NVIDIA GoForce 4500
diff --git a/src/emu/video/gf7600gs.c b/src/emu/video/gf7600gs.c
index ac718becf34..85b6b2f06da 100644
--- a/src/emu/video/gf7600gs.c
+++ b/src/emu/video/gf7600gs.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
 #include "gf7600gs.h"
 
 const device_type GEFORCE_7600GS = &device_creator<geforce_7600gs_device>;
diff --git a/src/emu/video/gf7600gs.h b/src/emu/video/gf7600gs.h
index 9a3b8b6e052..1d336ee5454 100644
--- a/src/emu/video/gf7600gs.h
+++ b/src/emu/video/gf7600gs.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
 #ifndef GF7600GS_H
 #define GF7600GS_H
 
diff --git a/src/emu/video/hd44102.c b/src/emu/video/hd44102.c
index 204604e5c03..883213f2ccd 100644
--- a/src/emu/video/hd44102.c
+++ b/src/emu/video/hd44102.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
 /**********************************************************************
 
     HD44102 Dot Matrix Liquid Crystal Graphic Display Column Driver emulation
diff --git a/src/emu/video/hd44102.h b/src/emu/video/hd44102.h
index 5d1c254fd4a..dd234cf69f4 100644
--- a/src/emu/video/hd44102.h
+++ b/src/emu/video/hd44102.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
 /**********************************************************************
 
     HD44102 Dot Matrix Liquid Crystal Graphic Display Column Driver emulation
diff --git a/src/emu/video/hd63484.c b/src/emu/video/hd63484.c
index 90d9d355460..8718bc52330 100644
--- a/src/emu/video/hd63484.c
+++ b/src/emu/video/hd63484.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Roberto Zandona'
 /***************************************************************************
 
   HD63484 ACRTC
diff --git a/src/emu/video/hd63484.h b/src/emu/video/hd63484.h
index 7082bf75e8f..1683cc67bd2 100644
--- a/src/emu/video/hd63484.h
+++ b/src/emu/video/hd63484.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Roberto Zandona'
 /*************************************************************************
 
   HD63484 ACRTC
diff --git a/src/emu/video/hd66421.c b/src/emu/video/hd66421.c
index f023795dcee..aff6154a6c4 100644
--- a/src/emu/video/hd66421.c
+++ b/src/emu/video/hd66421.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Tim Schuerewegen
 /*
 
     Hitachi HD66421 LCD Controller/Driver
diff --git a/src/emu/video/hd66421.h b/src/emu/video/hd66421.h
index 2168c4d3d65..48b42d819e1 100644
--- a/src/emu/video/hd66421.h
+++ b/src/emu/video/hd66421.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Tim Schuerewegen
 /***************************************************************************
 
   Hitachi HD66421 LCD Controller
diff --git a/src/emu/video/i8244.c b/src/emu/video/i8244.c
index 36842f0b879..a074b676e64 100644
--- a/src/emu/video/i8244.c
+++ b/src/emu/video/i8244.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol
 /***************************************************************************
 
     i8244.c
diff --git a/src/emu/video/i8244.h b/src/emu/video/i8244.h
index 0ef59566e69..ea518051a9f 100644
--- a/src/emu/video/i8244.h
+++ b/src/emu/video/i8244.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol
 /***************************************************************************
 
     i8244.h
diff --git a/src/emu/video/mos6566.c b/src/emu/video/mos6566.c
index 739ad2a76d5..35f6befe867 100644
--- a/src/emu/video/mos6566.c
+++ b/src/emu/video/mos6566.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
 /***************************************************************************
 
     MOS 6566/6567/6569 Video Interface Chip (VIC-II) emulation
diff --git a/src/emu/video/mos6566.h b/src/emu/video/mos6566.h
index ab470de6c4a..9788f65e6c4 100644
--- a/src/emu/video/mos6566.h
+++ b/src/emu/video/mos6566.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
 /***************************************************************************
 
     MOS 6566/6567/6569 Video Interface Chip II (VIC-II) emulation
diff --git a/src/emu/video/poly.h b/src/emu/video/poly.h
index d9ba5062ce2..4a9589affa7 100644
--- a/src/emu/video/poly.h
+++ b/src/emu/video/poly.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Ville Linde, Aaron Giles
 /***************************************************************************
 
     poly.h
diff --git a/src/emu/video/polylgcy.c b/src/emu/video/polylgcy.c
index a0a5d3952ea..575226e26a3 100644
--- a/src/emu/video/polylgcy.c
+++ b/src/emu/video/polylgcy.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Ville Linde, Aaron Giles
 /***************************************************************************
 
     polylgcy.c
diff --git a/src/emu/video/polylgcy.h b/src/emu/video/polylgcy.h
index 99fef4f5317..a69ae8e721a 100644
--- a/src/emu/video/polylgcy.h
+++ b/src/emu/video/polylgcy.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Ville Linde, Aaron Giles
 /***************************************************************************
 
     polylgcy.h
diff --git a/src/emu/video/resnet.c b/src/emu/video/resnet.c
index 82b2d73f4d8..2e9ef33ab02 100644
--- a/src/emu/video/resnet.c
+++ b/src/emu/video/resnet.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Couriersud
 /*****************************************************************************
 
     resnet.c
diff --git a/src/emu/video/resnet.h b/src/emu/video/resnet.h
index 02b03f9ce02..e16d1c4e9d4 100644
--- a/src/emu/video/resnet.h
+++ b/src/emu/video/resnet.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Couriersud
 /*****************************************************************************
 
     resnet.h
diff --git a/src/emu/video/rgbgen.h b/src/emu/video/rgbgen.h
index b9412998c1a..f80ce3c8451 100644
--- a/src/emu/video/rgbgen.h
+++ b/src/emu/video/rgbgen.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Vas Crabb
 /***************************************************************************
 
     rgbgen.h
diff --git a/src/emu/video/rgbsse.h b/src/emu/video/rgbsse.h
index 1f8ccaaa3d2..5b23dce7563 100644
--- a/src/emu/video/rgbsse.h
+++ b/src/emu/video/rgbsse.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Vas Crabb
 /***************************************************************************
 
     rgbsse.h
diff --git a/src/emu/video/rgbutil.c b/src/emu/video/rgbutil.c
index 3899c8068b9..e6ad746e8d6 100644
--- a/src/emu/video/rgbutil.c
+++ b/src/emu/video/rgbutil.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
 /***************************************************************************
 
     rgbutil.c
diff --git a/src/emu/video/rgbutil.h b/src/emu/video/rgbutil.h
index ce3ead35e98..a578bcb4d9d 100644
--- a/src/emu/video/rgbutil.h
+++ b/src/emu/video/rgbutil.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
 /***************************************************************************
 
     rgbutil.h
diff --git a/src/emu/video/scn2674.c b/src/emu/video/scn2674.c
index 91902516df0..ee1b9a10d79 100644
--- a/src/emu/video/scn2674.c
+++ b/src/emu/video/scn2674.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Carl
 /*
     SCN2674 - Advanced Video Display Controller (AVDC)  (Video Chip)
 */
diff --git a/src/emu/video/scn2674.h b/src/emu/video/scn2674.h
index 2f790dd772d..2b1eaa17184 100644
--- a/src/emu/video/scn2674.h
+++ b/src/emu/video/scn2674.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Carl
 #ifndef SCN2674_H
 #define SCN2674_H
 
diff --git a/src/emu/video/stvvdp1.c b/src/emu/video/stvvdp1.c
index 937c221f4c7..2ee16132c2d 100644
--- a/src/emu/video/stvvdp1.c
+++ b/src/emu/video/stvvdp1.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:LGPL-2.1+
+// copyright-holders:David Haywood, Angelo Salese, Olivier Galibert, Mariusz Wojcieszek, R.Belmont
 /*
 
 STV - VDP1
diff --git a/src/emu/video/stvvdp2.c b/src/emu/video/stvvdp2.c
index 221bb116188..4b419ef1f20 100644
--- a/src/emu/video/stvvdp2.c
+++ b/src/emu/video/stvvdp2.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:LGPL-2.1+
+// copyright-holders:David Haywood, Angelo Salese, Olivier Galibert, Mariusz Wojcieszek, R.Belmont
 /* Sega Saturn VDP2 */
 
 #define DEBUG_MODE 0
diff --git a/src/emu/video/tlc34076.c b/src/emu/video/tlc34076.c
index 5862d4f1c44..8665f64f9e2 100644
--- a/src/emu/video/tlc34076.c
+++ b/src/emu/video/tlc34076.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Phil Bennett
 /***************************************************************************
 
     tlc34076.c
diff --git a/src/emu/video/tlc34076.h b/src/emu/video/tlc34076.h
index 1bdeb70ce49..018b7f79703 100644
--- a/src/emu/video/tlc34076.h
+++ b/src/emu/video/tlc34076.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Phil Bennett
 /***************************************************************************
 
     tlc34076.h
diff --git a/src/emu/video/tms3556.c b/src/emu/video/tms3556.c
index fe9b8ce4d6c..819e18840d8 100644
--- a/src/emu/video/tms3556.c
+++ b/src/emu/video/tms3556.c
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Raphael Nabet
 /*
     tms3556 emulation
 
diff --git a/src/emu/video/tms3556.h b/src/emu/video/tms3556.h
index 2a4131f78d3..8c153ab2d5b 100644
--- a/src/emu/video/tms3556.h
+++ b/src/emu/video/tms3556.h
@@ -1,5 +1,5 @@
 // license:???
-// copyright-holders:???
+// copyright-holders:Raphael Nabet
 /***************************************************************************
 
   Texas Instruments TMS3556 Video Display Processor
diff --git a/src/emu/video/tms9927.c b/src/emu/video/tms9927.c
index 127459bc191..e0b878d8d32 100644
--- a/src/emu/video/tms9927.c
+++ b/src/emu/video/tms9927.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
 /**********************************************************************
 
     TI TMS9927 and compatible CRT controller emulation
diff --git a/src/emu/video/tms9927.h b/src/emu/video/tms9927.h
index 394add7355f..cc6460bf245 100644
--- a/src/emu/video/tms9927.h
+++ b/src/emu/video/tms9927.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
 /**********************************************************************
 
     TI TMS9927 and compatible CRT controller emulation
diff --git a/src/emu/video/tms9928a.c b/src/emu/video/tms9928a.c
index a58df4d5e02..a287191aa50 100644
--- a/src/emu/video/tms9928a.c
+++ b/src/emu/video/tms9928a.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Sean Young, Nathan Woods, Aaron Giles
 /*
 ** File: tms9928a.c -- software implementation of the Texas Instruments
 **                     TMS9918(A), TMS9928(A) and TMS9929(A), used by the Coleco, MSX and
diff --git a/src/emu/video/tms9928a.h b/src/emu/video/tms9928a.h
index 53e8ff1407b..afb082ef7a6 100644
--- a/src/emu/video/tms9928a.h
+++ b/src/emu/video/tms9928a.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Sean Young, Nathan Woods, Aaron Giles
 /*
 ** File: tms9928a.h -- software implementation of the TMS9928A VDP.
 **
diff --git a/src/emu/video/upd7227.c b/src/emu/video/upd7227.c
index 2ed1a7ac2de..d11061faf9b 100644
--- a/src/emu/video/upd7227.c
+++ b/src/emu/video/upd7227.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
 /**********************************************************************
 
     uPD7227 Intelligent Dot-Matrix LCD Controller/Driver emulation
diff --git a/src/emu/video/upd7227.h b/src/emu/video/upd7227.h
index e6f10688ebc..43d9a960a26 100644
--- a/src/emu/video/upd7227.h
+++ b/src/emu/video/upd7227.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
 /**********************************************************************
 
     uPD7227 Intelligent Dot-Matrix LCD Controller/Driver emulation
diff --git a/src/emu/video/v9938.c b/src/emu/video/v9938.c
index d70f64e962b..40e13ec4d6f 100644
--- a/src/emu/video/v9938.c
+++ b/src/emu/video/v9938.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles, Nathan Woods
 
 /***************************************************************************
 
diff --git a/src/emu/video/v9938.h b/src/emu/video/v9938.h
index ef342c35e66..4af159b5ae3 100644
--- a/src/emu/video/v9938.h
+++ b/src/emu/video/v9938.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles, Nathan Woods
 /***************************************************************************
 
     v9938 / v9958 emulation