C++ Simulator of a Universal Turing Machine can be downloaded at :

* http://alexvn.freeservers.com/s1/utm.html

* http://sourceforge.net/projects/turing-machine/

The program simulates a Universal Turing Machine (UTM).

The UTM used in the Simulator is three-tape Turing Machine:

* Tape#0 contains transition table and initial instantaneous description

of a Particular Turing Machine (TM);

* Tape#1 and Tape#2 are working UTM-tapes.

The UTM can simulate the behavior of a Multitape TM.

The package consists of two executable files :

* t2u - compiler TM-to-UTM

which translates description and input of TM to UTM-language;

t2u generates several output files, one of them is used as input of the utm.

* utm - the Simulator itself.

Detailed log file is generated.

Resources used (input size, output size, UTM-space, UTM-time) are computed as well.

Testsuites. Two Turing Machines (TM-1 and TM-2) are used to create inputs for UTM.

Each of them is an addition program which adds two numbers:

* TM-1 is one-tape TM,

* TM-2 is two-tape TM.

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Alex Vinokur