diff --git a/cpu/ppc/poweropcodes.cpp b/cpu/ppc/poweropcodes.cpp
index 6e6faf5..5c5b0ea 100644
--- a/cpu/ppc/poweropcodes.cpp
+++ b/cpu/ppc/poweropcodes.cpp
@@ -1,9 +1,23 @@
-//DingusPPC - Prototype 5bf2
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 // The Power-specific opcodes for the processor - ppcopcodes.cpp
 // Any shared opcodes are in ppcopcodes.cpp
diff --git a/cpu/ppc/ppcdisasm.cpp b/cpu/ppc/ppcdisasm.cpp
index a20c950..9632026 100644
--- a/cpu/ppc/ppcdisasm.cpp
+++ b/cpu/ppc/ppcdisasm.cpp
@@ -1,3 +1,24 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
 /** @file   Logic for the disassembler.
     @author maximumspatium
  */
diff --git a/cpu/ppc/ppcdisasm.h b/cpu/ppc/ppcdisasm.h
index 9da10b9..58b5dda 100644
--- a/cpu/ppc/ppcdisasm.h
+++ b/cpu/ppc/ppcdisasm.h
@@ -1,3 +1,24 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
 #ifndef PPCDISASM_H
 #define PPCDISASM_H
 
diff --git a/cpu/ppc/ppcemu.h b/cpu/ppc/ppcemu.h
index 3c1cd8b..0e01450 100644
--- a/cpu/ppc/ppcemu.h
+++ b/cpu/ppc/ppcemu.h
@@ -1,9 +1,23 @@
-//DingusPPC  - Prototype 5bf2
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 #ifndef PPCEMU_H
 #define PPCEMU_H
diff --git a/cpu/ppc/ppcexceptions.cpp b/cpu/ppc/ppcexceptions.cpp
index 2b7870b..743958e 100644
--- a/cpu/ppc/ppcexceptions.cpp
+++ b/cpu/ppc/ppcexceptions.cpp
@@ -1,3 +1,24 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
 /** @file Handling of low-level PPC exceptions. */
 
 #include <setjmp.h>
diff --git a/cpu/ppc/ppcexec.cpp b/cpu/ppc/ppcexec.cpp
index 8e04005..ee7dabf 100644
--- a/cpu/ppc/ppcexec.cpp
+++ b/cpu/ppc/ppcexec.cpp
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 or powermax#2286 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 #include <thirdparty/loguru.hpp>
 #include <stdio.h>
diff --git a/cpu/ppc/ppcfpopcodes.cpp b/cpu/ppc/ppcfpopcodes.cpp
index 5385f1b..574f3c1 100644
--- a/cpu/ppc/ppcfpopcodes.cpp
+++ b/cpu/ppc/ppcfpopcodes.cpp
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 or powermax#2286 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 // The opcodes for the processor - ppcopcodes.cpp
 
diff --git a/cpu/ppc/ppcgekkoopcodes.cpp b/cpu/ppc/ppcgekkoopcodes.cpp
index 6e2b526..17ff733 100644
--- a/cpu/ppc/ppcgekkoopcodes.cpp
+++ b/cpu/ppc/ppcgekkoopcodes.cpp
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 or powermax#2286 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 // The uniquely Gekko opcodes for the processor - ppcgekkoopcodes.cpp
 
diff --git a/cpu/ppc/ppcmmu.cpp b/cpu/ppc/ppcmmu.cpp
index 2eba8e8..8560672 100644
--- a/cpu/ppc/ppcmmu.cpp
+++ b/cpu/ppc/ppcmmu.cpp
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 or powermax#2286 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 /** @file PowerPC Memory management unit emulation. */
 
diff --git a/cpu/ppc/ppcmmu.h b/cpu/ppc/ppcmmu.h
index 97fe266..ca30c40 100644
--- a/cpu/ppc/ppcmmu.h
+++ b/cpu/ppc/ppcmmu.h
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 or powermax#2286 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 // The opcodes for the processor - ppcopcodes.cpp
 
diff --git a/cpu/ppc/ppcopcodes.cpp b/cpu/ppc/ppcopcodes.cpp
index 4a69908..9f43928 100644
--- a/cpu/ppc/ppcopcodes.cpp
+++ b/cpu/ppc/ppcopcodes.cpp
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 or powermax#2286 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 // General opcodes for the processor - ppcopcodes.cpp
 
diff --git a/debugger/debugger.cpp b/debugger/debugger.cpp
index 8e01f6b..8b598d6 100644
--- a/debugger/debugger.cpp
+++ b/debugger/debugger.cpp
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 or powermax#2286 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 #include <stdio.h>
 #include <string>
diff --git a/devices/heathrow.cpp b/devices/heathrow.cpp
index 3bfba98..fd67840 100644
--- a/devices/heathrow.cpp
+++ b/devices/heathrow.cpp
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 or powermax#2286 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 #include <thirdparty/loguru.hpp>
 #include <cinttypes>
@@ -174,4 +188,4 @@ void HeathrowIC::mio_ctrl_write(uint32_t offset, uint32_t value, int size)
         LOG_F(WARNING, "unknown MIO register at %x \n", offset);
         break;
     }
-}
\ No newline at end of file
+}
diff --git a/devices/machineid.h b/devices/machineid.h
index a3a986e..6398187 100644
--- a/devices/machineid.h
+++ b/devices/machineid.h
@@ -1,3 +1,24 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
 #ifndef MACHINE_ID_H
 #define MACHINE_ID_H
 
diff --git a/devices/macio.h b/devices/macio.h
index 6e27ed1..8ca4b35 100644
--- a/devices/macio.h
+++ b/devices/macio.h
@@ -1,3 +1,24 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
 /** MacIO device family emulation
 
     Mac I/O (MIO) is a family of ASICs to bring support for Apple legacy
diff --git a/devices/memctrlbase.cpp b/devices/memctrlbase.cpp
index 7c5eae9..a9528d3 100644
--- a/devices/memctrlbase.cpp
+++ b/devices/memctrlbase.cpp
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 or powermax#2286 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 #include <string>
 #include <cstring>
diff --git a/devices/memctrlbase.h b/devices/memctrlbase.h
index 75e5c66..2228971 100644
--- a/devices/memctrlbase.h
+++ b/devices/memctrlbase.h
@@ -1,3 +1,24 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
 #ifndef MEMORY_CONTROLLER_BASE_H
 #define MEMORY_CONTROLLER_BASE_H
 
diff --git a/devices/mmiodevice.h b/devices/mmiodevice.h
index 9cc48e4..a1ea462 100644
--- a/devices/mmiodevice.h
+++ b/devices/mmiodevice.h
@@ -1,3 +1,24 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
 #ifndef MMIO_DEVICE_H
 #define MMIO_DEVICE_H
 
diff --git a/devices/mpc106.cpp b/devices/mpc106.cpp
index c6c1f12..cda5674 100644
--- a/devices/mpc106.cpp
+++ b/devices/mpc106.cpp
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 or powermax#2286 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 /** MPC106 (Grackle) emulation
 
diff --git a/devices/mpc106.h b/devices/mpc106.h
index ea13e98..245a1b2 100644
--- a/devices/mpc106.h
+++ b/devices/mpc106.h
@@ -1,10 +1,23 @@
-//DingusPPC - Prototype 5bf2
-//Written by divingkatae
-//(c)2018-20 (theweirdo)
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
 
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 /** MPC106 (Grackle) emulation
 
     Author: Max Poliakovski
diff --git a/devices/nvram.cpp b/devices/nvram.cpp
index 65c1774..1dbb046 100644
--- a/devices/nvram.cpp
+++ b/devices/nvram.cpp
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 or powermax#2286 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 #include <thirdparty/loguru.hpp>
 #include <iostream>
diff --git a/devices/nvram.h b/devices/nvram.h
index 79849c7..c868da2 100644
--- a/devices/nvram.h
+++ b/devices/nvram.h
@@ -1,3 +1,24 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
 #ifndef NVRAM_H
 #define NVRAM_H
 
diff --git a/devices/pcidevice.h b/devices/pcidevice.h
index e1985a6..2a945b0 100644
--- a/devices/pcidevice.h
+++ b/devices/pcidevice.h
@@ -1,3 +1,24 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
 #ifndef PCI_DEVICE_H
 #define PCI_DEVICE_H
 
diff --git a/devices/viacuda.cpp b/devices/viacuda.cpp
index 98dd76a..961da63 100644
--- a/devices/viacuda.cpp
+++ b/devices/viacuda.cpp
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 /** VIA-CUDA combo device emulation.
 
diff --git a/devices/viacuda.h b/devices/viacuda.h
index e333e96..0c7a6a3 100644
--- a/devices/viacuda.h
+++ b/devices/viacuda.h
@@ -1,9 +1,23 @@
-//DingusPPC - Prototype 5bf2
-//Written by divingkatae
-//(c)2018-20 (theweirdo)
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 /** VIA-CUDA combo device emulation.
 
diff --git a/main.cpp b/main.cpp
index 0591dcf..2593bbf 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,9 +1,23 @@
-//DingusPPC
-//Written by divingkatae and maximum
-//(c)2018-20 (theweirdo)     spatium
-//Please ask for permission
-//if you want to distribute this.
-//(divingkatae#1017 or powermax#2286 on Discord)
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-20 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 
 //The main runfile - main.cpp
 //This is where the magic begins