License Agreement for Z80-CPU simulation

The program described in this license is copyrighted by the law of Germany.
The program may be copied and shared under the following terms:

1. The user receives all the source-codes of the program including the license.

2. For the physical act of transfer and sharing of the package, a small fee may
   be demanded. The program itself must not be sold without the author's
   permission.

License to the user of the program:

1. This program may be used free of fee for non-comercial usages.
   Examples of non-comercial usages:
   a) Private usage to develop, debug and function-test programs, which
      are public domain or freeware.
   b) Usage as a teching-tool for privat, or in a public arrangement
      like schools and universitys.

2. For comercial usage of the program, a fee must be amounted to the author.
   In cause of fairness, a big company will have to pay more for a license than
   a single software developer. So the amount of the fee must be negotiated
   with the autor of the program.
   Examples for comercial usage:
   a) Development, debugging and function-test of programs which are no public
      domain neither freeware.
   b) Development of a simulation of a mainsystem which contains the CPU
      simulation as a part, but which is no public domain neither freeware. 
   c) Usage as a teching-tool in a non-public arrangement or company.

Modification of the program:

The program-parts which emulate the Z80-CPU may be only modified by the
user for debugging. The user is bound to inform the author about those
modifications. This should prevent an uncontrolled number of versions
and ensure the support to comercial users through the author. 
The other both components of the program (I/O-simulation and user-interface)
may be modified by the user any number. Every module contains a head with 
an indication. 

Usage of the algorithm of this program to emulate a CPU:

The algorithm used by the program to emulate the CPU is in the ownership 
of the author. This algorithm is described by the author as followed:
"Simulation of a microprocessor with a table-driven finite-state machine,
executing microcode of the simulated CPU, which is written in higher-level
programing language"
Everyone is granted to use this algorithm in other programs free of fee.
No one must acquire any rights on this algorithm.

VIOLATIONS AGAINST THIS LICENSE RESULTS IN A LOSS OF RIGHTS TO USE
THIS PROGRAM.

THE PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL
THE AUTOR BE LIABLE TO YOU FOR ANY DAMAGES, INCLUDING ANY LOST PROFITS,
LOST SAVINGS OR OTHER INCIDENTAL OR CONSEQUENTAL DAMAGES ARISING OUT OF
THE USE OF THE PROGRAM.

Udo Munk               voice:      +49 2131 275348
Oberstr. 21            mail :      udo@umunk.GUN.de
4040 Neuss 1           ...!{mcshh,smurf,unido}!easix!umunk!udo
Germany                CompuServe: 100021,2515