clarify PicoDrive's license

- PicoDrive was originally released by fDave with simple
  "free for non-commercial use / For commercial use, separate licencing
  terms must be obtained" license and I kept it in my releases.
- in 2011, fDave re-released his code (same that I used as base
  many years ago) dual licensed with GPLv2 and MAME licenses:
    https://code.google.com/p/cyclone68000/

Based on the above I now proclaim that the whole source code is licensed
under the MAME license as more elaborate form of "for non-commercial use".
If that raises any doubt, I announce that all my modifications (which
is the vast majority of code by now) is licensed under the MAME license,
as it reads in COPYING file in this commit.

This does not affect ym2612.c/sn76496.c that were MAME licensed already
from the beginning.

platform/base_readme.txt

@@ -1139,20 +1139,40 @@ Changelog
   Initial release.
 
 
-Disclaimer
-----------
+License
+-------
 
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
-POSSIBILITY OF SUCH DAMAGE. 
+This program and it's code is released under the terms of MAME license:
+
+ Redistribution and use of this code or any derivative works are permitted
+ provided that the following conditions are met:
+
+ * Redistributions may not be sold, nor may they be used in a commercial
+ product or activity.
+
+ * Redistributions that are modified from the original source must include the
+ complete source code, including the source code for all components used by a
+ binary built from the modified sources. However, as a special exception, the
+ source code distributed need not include anything that is normally distributed
+ (in either source or binary form) with the major components (compiler, kernel,
+ and so on) of the operating system on which the executable runs, unless that
+ component itself accompanies the executable.
+
+ * Redistributions must reproduce the above copyright notice, this list of
+ conditions and the following disclaimer in the documentation and/or other
+ materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
 
 SEGA/Genesis/MegaDrive/SEGA-CD/Mega-CD/32X are trademarks of
 Sega Enterprises Ltd.

platform/common/arm_utils.h

@@ -1,7 +1,3 @@
-// (c) Copyright 2006-2009 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
 
 void bgr444_to_rgb32(void *to, void *from);
 void bgr444_to_rgb32_sh(void *to, void *from);

platform/common/arm_utils.s

@@ -1,10 +1,10 @@
-@ vim:filetype=armasm
-@ some color conversion and blitting routines
-
-@ (c) Copyright 2006, 2007 notaz
-@ All Rights Reserved
-
-@ vim:filetype=armasm
+/*
+ * some color conversion and blitting routines
+ * (C) notaz, 2006-2009
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 .text
 .align 4
@@ -335,3 +335,4 @@ spend_cycles:
 
     bx      lr
 
+@ vim:filetype=armasm

platform/common/config.c

@@ -1,6 +1,9 @@
 /*
  * Human-readable config file management for PicoDrive
- * (c) notaz, 2008
+ * (C) notaz, 2008-2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
  */
 
 #include <stdio.h>

platform/common/emu.c

@@ -1,7 +1,10 @@
-// (c) Copyright 2006-2009 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2007-2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <stdio.h>
 #include <stdlib.h>

platform/common/emu.h

@@ -1,7 +1,10 @@
-// (c) Copyright 2006-2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2006-2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include "port_config.h"
 

platform/common/main.c

@@ -1,7 +1,10 @@
-// (c) Copyright 2006-2009 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2006-2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <stdio.h>
 #include <stdlib.h>

platform/common/menu_pico.c

@@ -1,3 +1,10 @@
+/*
+ * PicoDrive
+ * (C) notaz, 2010,2011
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 #include <string.h>
 
 #include "emu.h"

platform/common/mp3.c

@@ -1,3 +1,10 @@
+/*
+ * PicoDrive
+ * (C) notaz, 2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 #include "mp3.h"
 
 int mp3_find_sync_word(const unsigned char *buf, int size)

platform/common/mp3_helix.c

@@ -1,7 +1,11 @@
-// Some mp3 related code for Sega/Mega CD.
-// Uses the Helix Fixed-point MP3 decoder
-
-// (c) Copyright 2007, Grazvydas "notaz" Ignotas
+/*
+ * Some mp3 related code for Sega/Mega CD.
+ * Uses the Helix Fixed-point MP3 decoder
+ * (C) notaz, 2007-2009
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <stdio.h>
 #include <string.h>

platform/gizmondo/emu.h

@@ -1,8 +1,3 @@
-// (c) Copyright 2006-2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
-
 extern unsigned char gfx_buffer[321*240*2*2];
 
 void emu_stateCb(const char *str);

platform/gizmondo/giz.c

@@ -1,3 +1,10 @@
+/*
+ * PicoDrive
+ * (C) notaz, 2007
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 #include <windows.h>
 #include <stdio.h>
 

platform/gizmondo/main.c

@@ -1,7 +1,10 @@
-// (c) Copyright 2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2006-2008
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <windows.h>
 

platform/gizmondo/menu.c

@@ -1,7 +1,10 @@
-// (c) Copyright 2006,2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2006-2008
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 // don't like to use loads of #ifdefs, so duplicating GP2X code
 // horribly instead

platform/gizmondo/menu.h

@@ -1,7 +1,10 @@
-// (c) Copyright 2006,2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2006-2008
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 void menu_loop(void);
 int  menu_loop_tray(void);

platform/gp2x/940ctl.c

@@ -1,5 +1,10 @@
-// Code for communication with ARM940 and control of it.
-// (c) Copyright 2007, Grazvydas "notaz" Ignotas
+/*
+ * Code for communication with ARM940 and control of it.
+ * (C) notaz, 2006-2009
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <stdio.h>
 #include <stdlib.h>

platform/gp2x/soc_mmsp2.c

@@ -1,3 +1,10 @@
+/*
+ * PicoDrive
+ * (C) notaz, 2006-2009
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

platform/gp2x/soc_pollux.c

@@ -1,3 +1,10 @@
+/*
+ * PicoDrive
+ * (C) notaz, 2009,2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 /*
  * <random_info=mem_map>
  * 00000000-029fffff linux (42MB)

platform/linux/blit.c

@@ -1,3 +1,10 @@
+/*
+ * PicoDrive
+ * (C) notaz, 2006,2009
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 // Convert 0000bbb0 ggg0rrr0 0000bbb0 ggg0rrr0
 // to      00000000 rrr00000 ggg00000 bbb00000 ...

platform/linux/emu.c

@@ -1,7 +1,10 @@
-// (c) Copyright 2006-2009 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2006-2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <stdio.h>
 #include <unistd.h>

platform/linux/host_dasm.c

@@ -1,3 +1,10 @@
+/*
+ * PicoDrive
+ * (C) notaz, 2009,2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

platform/linux/io.c

@@ -1,3 +1,10 @@
+/*
+ * PicoDrive
+ * (C) notaz, 2007-2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

platform/linux/log_io.c

@@ -1,3 +1,10 @@
+/*
+ * PicoDrive
+ * (C) notaz, 2007
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 #include <stdio.h>
 
 typedef struct

platform/pandora/plat.c

@@ -1,7 +1,10 @@
-// (c) Copyright 2006-2009 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2010,2011
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <stdio.h>
 #include <unistd.h>

platform/psp/emu.c

@@ -1,7 +1,10 @@
-// (c) Copyright 2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2007,2008
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <sys/stat.h>
 #include <sys/types.h>

platform/psp/emu.h

@@ -1,8 +1,3 @@
-// (c) Copyright 2006-2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
-
 
 extern int engineStateSuspend;
 

platform/psp/main.c

@@ -1,7 +1,10 @@
-// (c) Copyright 2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2007,2008
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <string.h>
 #include "psp.h"

platform/psp/menu.c

@@ -1,7 +1,10 @@
-// (c) Copyright 2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2006-2008
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 // don't like to use loads of #ifdefs, so duplicating GP2X code
 // horribly instead

platform/psp/menu.h

@@ -1,7 +1,3 @@
-// (c) Copyright 2006,2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
 
 void menu_loop(void);
 int  menu_loop_tray(void);

platform/psp/mp3.c

@@ -1,7 +1,10 @@
-// (c) Copyright 2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2007,2008
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <stdio.h>
 #include <string.h>

platform/psp/psp.c

@@ -1,8 +1,10 @@
-// (c) Copyright 2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
-
+/*
+ * PicoDrive
+ * (C) notaz, 2007,2008
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>

platform/psp/psp.h

@@ -1,7 +1,10 @@
-// (c) Copyright 2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+/*
+ * PicoDrive
+ * (C) notaz, 2007,2008
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <pspctrl.h>
 

platform/win32/plat.c

@@ -1,3 +1,10 @@
+/*
+ * PicoDrive
+ * (C) notaz, 2009,2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 #include <windows.h>
 #include <stdio.h>