Update license to Apache, version 2.0

3 years ago · 8c75b0f206
--- a/LICENSE.md
+++ b/LICENSE.md
@ -1,166 +1,77 @@
 #GNU LESSER GENERAL PUBLIC LICENSE
 Version 3, 29 June 2007
 # Apache License

 Version 2.0, January 2004

 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
 ## TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

 ### 1. Definitions.

  This version of the GNU Lesser General Public License incorporates
 the terms and conditions of version 3 of the GNU General Public
 License, supplemented by the additional permissions listed below.
 *"License"* shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.

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 General Public License, and the "GNU GPL" refers to version 3 of the GNU
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 ## Appendix: How to apply the Apache License to your work

 To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives.

    Copyright [yyyy] [name of copyright owner]
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at
 
        http://www.apache.org/licenses/LICENSE-2.0
 
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
--- a/common/UtilsP.vhd
+++ b/common/UtilsP.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;
  use ieee.numeric_std.all;
--- a/formal/Makefile
+++ b/formal/Makefile
@ -1,3 +1,19 @@
 ##  Copyright (c) 2014 - 2022 by Torsten Meissner
 ##
 ##  Licensed under the Apache License, Version 2.0 (the "License");
 ##  you may not use this file except in compliance with the License.
 ##  You may obtain a copy of the License at
 ##
 ##      https://www.apache.org/licenses/LICENSE-2.0
 ##
 ##  Unless required by applicable law or agreed to in writing, software
 ##  distributed under the License is distributed on an "AS IS" BASIS,
 ##  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ##  See the License for the specific language governing permissions and
 ##  limitations under the License.



 .PHONY: all-cover all-bmc all-prove all
 all: all-cover all-bmc all-prove
 all-cover: WishBoneMasterE-cover WishBoneSlaveE-cover
--- a/formal/WishBoneMasterE.sby
+++ b/formal/WishBoneMasterE.sby
@ -1,3 +1,19 @@
 ##  Copyright (c) 2014 - 2022 by Torsten Meissner
 ##
 ##  Licensed under the Apache License, Version 2.0 (the "License");
 ##  you may not use this file except in compliance with the License.
 ##  You may obtain a copy of the License at
 ##
 ##      https://www.apache.org/licenses/LICENSE-2.0
 ##
 ##  Unless required by applicable law or agreed to in writing, software
 ##  distributed under the License is distributed on an "AS IS" BASIS,
 ##  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ##  See the License for the specific language governing permissions and
 ##  limitations under the License.



 [tasks]
 bmc
 prove
--- a/formal/WishBoneSlaveE.sby
+++ b/formal/WishBoneSlaveE.sby
@ -1,3 +1,19 @@
 ##  Copyright (c) 2014 - 2022 by Torsten Meissner
 ##
 ##  Licensed under the Apache License, Version 2.0 (the "License");
 ##  you may not use this file except in compliance with the License.
 ##  You may obtain a copy of the License at
 ##
 ##      https://www.apache.org/licenses/LICENSE-2.0
 ##
 ##  Unless required by applicable law or agreed to in writing, software
 ##  distributed under the License is distributed on an "AS IS" BASIS,
 ##  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ##  See the License for the specific language governing permissions and
 ##  limitations under the License.



 [tasks]
 bmc
 prove
--- a/sim/AssertP.vhd
+++ b/sim/AssertP.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;

--- a/sim/DictP.vhd
+++ b/sim/DictP.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;

--- a/sim/QueueP.vhd
+++ b/sim/QueueP.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;

--- a/sim/SimP.vhd
+++ b/sim/SimP.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;

--- a/sim/StackP.vhd
+++ b/sim/StackP.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;

--- a/syn/SpiMasterE.vhd
+++ b/syn/SpiMasterE.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;
  use ieee.numeric_std.all;
--- a/syn/SpiSlaveE.vhd
+++ b/syn/SpiSlaveE.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;
  use ieee.numeric_std.all;
--- a/syn/UartRx.vhd
+++ b/syn/UartRx.vhd
@ -1,21 +1,17 @@
 -- ======================================================================
 -- UART Receiver
 -- Copyright (C) 2020 Torsten Meissner
 -------------------------------------------------------------------------
 -- This program is free software; you can redistribute it and/or
 -- modify it under the terms of the GNU Lesser General Public
 -- License as published by the Free Software Foundation; either
 -- version 3 of the License, or (at your option) any later version.
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 -- This program is distributed in the hope that it will be useful,
 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 -- Lesser General Public License for more details.
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 -- You should have received a copy of the GNU Lesser General Public License
 -- along with this program; if not, write to the Free Software Foundation,
 -- Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 -- ======================================================================
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
--- a/syn/UartTx.vhd
+++ b/syn/UartTx.vhd
@ -1,21 +1,17 @@
 -- ======================================================================
 -- UART transmitter
 -- Copyright (C) 2020 Torsten Meissner
 -------------------------------------------------------------------------
 -- This program is free software; you can redistribute it and/or
 -- modify it under the terms of the GNU Lesser General Public
 -- License as published by the Free Software Foundation; either
 -- version 3 of the License, or (at your option) any later version.
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 -- This program is distributed in the hope that it will be useful,
 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 -- Lesser General Public License for more details.
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 -- You should have received a copy of the GNU Lesser General Public License
 -- along with this program; if not, write to the Free Software Foundation,
 -- Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 -- ======================================================================
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
--- a/syn/WishBoneCheckerE.vhd
+++ b/syn/WishBoneCheckerE.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;
  use ieee.numeric_std.all;
--- a/syn/WishBoneMasterE.vhd
+++ b/syn/WishBoneMasterE.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;
  use ieee.numeric_std.all;
--- a/syn/WishBoneP.vhd
+++ b/syn/WishBoneP.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;

--- a/syn/WishBoneSlaveE.vhd
+++ b/syn/WishBoneSlaveE.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;
  use ieee.numeric_std.all;
--- a/test/DictT.vhd
+++ b/test/DictT.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;
  use ieee.numeric_std.all;
--- a/test/Makefile
+++ b/test/Makefile
@ -1,3 +1,19 @@
 ##  Copyright (c) 2014 - 2022 by Torsten Meissner
 ##
 ##  Licensed under the Apache License, Version 2.0 (the "License");
 ##  you may not use this file except in compliance with the License.
 ##  You may obtain a copy of the License at
 ##
 ##      https://www.apache.org/licenses/LICENSE-2.0
 ##
 ##  Unless required by applicable law or agreed to in writing, software
 ##  distributed under the License is distributed on an "AS IS" BASIS,
 ##  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ##  See the License for the specific language governing permissions and
 ##  limitations under the License.



 SIM_SRC := ../sim
 SYN_SRC := ../syn
 CMN_SRC := ../common
--- a/test/QueueT.vhd
+++ b/test/QueueT.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;
  use ieee.numeric_std.all;
--- a/test/SimT.vhd
+++ b/test/SimT.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;
  use ieee.numeric_std.all;
--- a/test/SpiT.vhd
+++ b/test/SpiT.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;
  use ieee.numeric_std.all;
--- a/test/StackT.vhd
+++ b/test/StackT.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;
  use ieee.numeric_std.all;
--- a/test/UartT.vhd
+++ b/test/UartT.vhd
@ -1,21 +1,17 @@
 -- ======================================================================
 -- UART testbench
 -- Copyright (C) 2020 Torsten Meissner
 -------------------------------------------------------------------------
 -- This program is free software; you can redistribute it and/or
 -- modify it under the terms of the GNU Lesser General Public
 -- License as published by the Free Software Foundation; either
 -- version 3 of the License, or (at your option) any later version.
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 -- This program is distributed in the hope that it will be useful,
 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 -- Lesser General Public License for more details.
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 -- You should have received a copy of the GNU Lesser General Public License
 -- along with this program; if not, write to the Free Software Foundation,
 -- Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 -- ======================================================================
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
--- a/test/WishBoneT.tcl
+++ b/test/WishBoneT.tcl
@ -1,3 +1,19 @@
 ##  Copyright (c) 2014 - 2022 by Torsten Meissner
 ##
 ##  Licensed under the Apache License, Version 2.0 (the "License");
 ##  you may not use this file except in compliance with the License.
 ##  You may obtain a copy of the License at
 ##
 ##      https://www.apache.org/licenses/LICENSE-2.0
 ##
 ##  Unless required by applicable law or agreed to in writing, software
 ##  distributed under the License is distributed on an "AS IS" BASIS,
 ##  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ##  See the License for the specific language governing permissions and
 ##  limitations under the License.



 set signals [list]
 lappend signals "top.WishBoneT.s_wb_reset"
 lappend signals "top.WishBoneT.s_wb_clk"
--- a/test/WishBoneT.vhd
+++ b/test/WishBoneT.vhd
@ -1,3 +1,19 @@
 --  Copyright (c) 2014 - 2022 by Torsten Meissner
 --
 --  Licensed under the Apache License, Version 2.0 (the "License");
 --  you may not use this file except in compliance with the License.
 --  You may obtain a copy of the License at
 --
 --      https://www.apache.org/licenses/LICENSE-2.0
 --
 --  Unless required by applicable law or agreed to in writing, software
 --  distributed under the License is distributed on an "AS IS" BASIS,
 --  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 --  See the License for the specific language governing permissions and
 --  limitations under the License.



 library ieee;
  use ieee.std_logic_1164.all;
  use ieee.numeric_std.all;