o added licence headers to all files

cartridgeloader/loader.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package cartridgeloader represents cartridge data when not attached to the
 // VCS. When a reference to a cartridge is required functions expect an
 // instance of cartridgeloader.Loader.

database/database.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package database
 
 import (

database/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package database is a very simple way of storing structured and arbitrary
 // entry types. (Note that we're using the term entry rather than record). It's
 // as simple as simple can be but is still useful in helping to organise what

database/entry.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package database
 
 import (

database/select.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package database
 
 import "gopher2600/errors"

database/session.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package database
 
 import (

debugger/breakpoints.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // breakpoints are used to halt execution when a  target is *changed to* a
 // specific value.  compare to traps which are used to halt execution when the
 // target *changes from* its current value *to* any other value.

debugger/breakpoints_test.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger_test
 
 func (trm *mockTerm) testBreakpoints() {

debugger/commands.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 import (

debugger/commands_help.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 var helps = map[string]string{

debugger/commands_template.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 // debugger keywords

debugger/debugger.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 import (

debugger/debugger_test.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger_test
 
 import (

debugger/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package debugger implements a reaonably comprehensive debugging tool.
 // Features include:
 //

debugger/events.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 import (

debugger/inputloop.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 import (

debugger/instrumentation.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 import (

debugger/memory.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 import (

debugger/print.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 // this file holds the functions/structures to be used when outputting to the

debugger/prompt.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 import (

debugger/quantum.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 type quantumMode int

debugger/reflection/reflection.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package reflection monitors the emulated hardware for conditions that would
 // otherwise not be visible. In particular it signals the MetaPixelRenderer
 // when certain memory addresses have been written to. For example, the HMOVE

debugger/script/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package script allows the debugger to record and replay debugging scripts.
 // In this package we refer to this as scribing and rescribing, to avoid
 // confusion with recording and playback of user input.

debugger/script/rescribe.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package script
 
 import (

debugger/script/scribe.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package script
 
 import (

debugger/targets.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 import (

debugger/terminal/colorterm/ansi/ansi.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package ansi defines ANSI control codes for styles and colours.
 package ansi
 

debugger/terminal/colorterm/colorterm.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package colorterm implements the Terminal interface for the gopher2600
 // debugger. It supports color output, history and tab completion.
 package colorterm

debugger/terminal/colorterm/easyterm/easyterm.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package easyterm is a wrapper for "github.com/pkg/term/termios". it provides
 // some features not present in the third-party package, such as terminal
 // geometry, and wraps termios methods in functions with friendlier names

debugger/terminal/colorterm/easyterm/keycodes.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package easyterm
 
 // list of ASCII codes for non-alphanumeric characters

debugger/terminal/colorterm/input.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package colorterm
 
 import (

debugger/terminal/colorterm/output.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package colorterm
 
 import (

debugger/terminal/colorterm/readrune.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package colorterm
 
 // this part of the colorterm package facilitates the reading of runes from a

debugger/terminal/commandline/commands.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package commandline
 
 import (

debugger/terminal/commandline/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package commandline facilitates parsing of command line input. Given a
 // command template, it can be used to tokenisze and validate user input. It
 // also functions as a tab-completion engine, implementing the

debugger/terminal/commandline/nodes.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package commandline
 
 import (

debugger/terminal/commandline/parser.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package commandline
 
 // FLAWS: the following pattern parses correctly but doesn't yet mean anything

debugger/terminal/commandline/parser_test.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package commandline_test
 
 import (

debugger/terminal/commandline/tabcompletion.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package commandline
 
 // #tab #completion

debugger/terminal/commandline/tabcompletion_test.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package commandline_test
 
 import (

debugger/terminal/commandline/tokeniser.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package commandline
 
 import (

debugger/terminal/commandline/validation.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package commandline
 
 import (

debugger/terminal/commandline/validation_test.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package commandline_test
 
 import (

debugger/terminal/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package terminal defines the operations required for user interaction with
 // the debugger. While an implementation of the GUI interface, found in the GUI
 // package, may allow some interaction with the debugger (eg. visually setting

debugger/terminal/plainterm/plainterm.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package plainterm implements the Terminal interface for the gopher2600
 // debugger. It's a simple as simple can be and offers no special features.
 package plainterm

debugger/terminal/style.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package terminal
 
 // Style is used to identify the category of text being sent to the

debugger/terminal/terminal.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package terminal
 
 import (

debugger/traps.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // traps are used to halt execution of the emulator when the target *changes*
 // from its current value to any other value. compare to breakpoints which halt
 // execution when the target is *changed to* a specific value.

debugger/traps_test.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger_test
 
 func (trm *mockTerm) testTraps() {

debugger/watches.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger
 
 import (

debugger/watches_test.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package debugger_test
 
 func (trm *mockTerm) testWatches() {

digest/audio.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package digest
 
 import (

digest/digest.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package digest is used to create mathematical hashes of VCS output. The
 // two implementations of the Digest interface also implement the
 // television.PixelRenderer and television.AudioMixer interfaces.

digest/video.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package digest
 
 import (

disassembly/disassembly.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package disassembly
 
 import (

disassembly/display/columns.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package display
 
 import "fmt"

disassembly/display/display.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package display
 
 import (

disassembly/display/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package display facilitates the presentation of disassembled ROMs.
 //
 // The Instruction type stores the formatted parts of an individual

disassembly/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package disassembly coordinates the disassembly Atari2600 (6507) cartridges.
 //
 // For quick disassemblies the FromCartridge() function can be used. Many

disassembly/flow.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package disassembly
 
 import (

disassembly/grep.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package disassembly
 
 import (

disassembly/linear.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package disassembly
 
 import (

disassembly/memory.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package disassembly
 
 import (

disassembly/write.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package disassembly
 
 import (

errors/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package errors is a helper package for the error type. It defines the
 // AtariError type, a implementation of error the error interface, that allows
 // code to wrap errors around other errors and to allow normalised formatted

errors/errors.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package errors
 
 import (

errors/errors_test.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package errors_test
 
 import (

errors/messages.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package errors
 
 // error messages

gopher2600.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package main
 
 import (

gui/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package gui is an abstraction layer for real GUI implementations. It defines
 // the Events that can be passed from the GUI to the emulation code and also
 // the Requests that can be made from the emulation code to the GUI.

gui/events.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package gui
 
 // Events are the things that happen in the gui, as a result of user interaction,

gui/gui.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package gui
 
 // GUI defines the operations that can be performed on visual user interfaces.

gui/metapixels.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package gui
 
 // MetaPixelRenderer implementations accepts MetaPixel values and associates it

gui/requests.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package gui
 
 // FeatureReq is used to request the setting of a gui attribute

gui/sdldebug/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package sdldebug implements the GUI interface. Suitable for applications
 // that require a screen and debugging overlays.
 package sdldebug

gui/sdldebug/guiloop.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package sdldebug
 
 import (

gui/sdldebug/overlay.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package sdldebug
 
 import (

gui/sdldebug/pixels.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package sdldebug
 
 import (

gui/sdldebug/requests.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package sdldebug
 
 import (

gui/sdldebug/sdldebug.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package sdldebug
 
 import (

gui/sdlplay/audio.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package sdlplay
 
 import (

gui/sdlplay/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package sdlplay implements the GUI interface. Suitable for applications that
 // require a minimalist screen intended for playing games/cartrdiges, rather
 // than debugging them.

gui/sdlplay/guiloop.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package sdlplay
 
 import (

gui/sdlplay/requests.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package sdlplay
 
 import (

gui/sdlplay/sdlplay.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package sdlplay
 
 import (

hardware/cpu/cpu.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package cpu
 
 import (

hardware/cpu/cpu_test.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package cpu_test
 
 import (

hardware/cpu/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package cpu emulates the 6507 microprocessor found in the Atari VCS. Like
 // all 8-bit processors of the era, the 6507 executes instructions according to
 // the single byte value read from an address pointed to by the program

hardware/cpu/execution/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package execution tracks the result of instruction execution on the CPU.
 // The Result type stores detailed information about each instruction
 // encountered during a program execution on the CPU. A Result can then be used

hardware/cpu/execution/result.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package execution
 
 import (

hardware/cpu/execution/validity.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package execution
 
 import (

hardware/cpu/instructions/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package instructions defines the table of instruction for the 6507. The
 // Definition type is used to summarise the requirements and effects of each
 // entry in the table.

hardware/cpu/instructions/generator/instructions.csv

@@ -1,3 +1,23 @@
+# This file is part of Gopher2600.
+#
+# Gopher2600 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.
+#
+# Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+#
+# *** NOTE: all historical versions of this file, as found in any
+# git repository, are also covered by the licence, even when this
+# notice is not present ***
+
+
 # instruction table entries are defined by the following fields: 
 #
 #	opcode, mnemonic, cycles, addressing mode, page sensitivity, [effect category]

hardware/cpu/instructions/generator/instructions_gen.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 //go:generate go run instructions_gen.go
 
 package main

hardware/cpu/instructions/instructions.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package instructions
 
 import "fmt"

hardware/cpu/registers/decimal_mode.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package registers
 
 // these decimal functions return information about zero and sign bits in

hardware/cpu/registers/decimal_mode_test.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package registers_test
 
 import (

hardware/cpu/registers/doc.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 // Package registers implements the three types of registers found in the 6507.
 // The three types are the: program counter, status register and the 8 bit
 // accumulator type used for A, X, Y.

hardware/cpu/registers/program_counter.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package registers
 
 import "fmt"

hardware/cpu/registers/program_counter_test.go

@@ -1,3 +1,22 @@
+// This file is part of Gopher2600.
+//
+// Gopher2600 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.
+//
+// Gopher2600 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 Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+//
+// *** NOTE: all historical versions of this file, as found in any
+// git repository, are also covered by the licence, even when this
+// notice is not present ***
+
 package registers_test
 
 import (