This program provides common HDL modules for the IRENA family of data
acquisition instruments that are develeoped and used at the Institute
for Experimantal and Applied Physics at the Christian-Albrechts-
University in Kiel, Germany.

Copyright (c) 2010-2011 Christian-Albrechts-Universität zu Kiel
Copyright (c) 2010-2011 Stephan Böttcher

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or (at
your option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.


The files in the mega/ subdirectory are Copyright (c) by Altera and
are not covered by this license.  You/we may not be allowed to
distribute those, but I could not settle that question by reading the
Altera license.  The megafunctions provide access to hardware blocks
of the specific FPGA (Cyclon 3), pll, sram, multiplier.  They were
made with a Quartus II web-edition, and do not contain much except for
descriptions of the interface to these functions.

In the context of this program, the megafunctions fall under the
clause of libraries that are part of the _operating system_.  You may
distribute derived works of this program according to this licecnse,
that use similar megafunctions for this or other targets, as long as
these megafunctions are simple interface descriptions to facilities
that are provided as hardwired components by the target.  E.g., this
does not cover proprietary CPUs or similar modules, which are
synthesized from generic logic cells.