gerhard.kreuzer at liftoff.at wrote:
     I think about a FPGA-version of ENIAC, so ist
relativly
 easy to get the hands on a replica.
    Is there goood documentation available? Is the ENIAC on
 a chip project online, that meens, all the docs? 
The project is generally described here:
http://www.ese.upenn.edu/~jan/eniacproj.html
But the best technical description of it by far that I've found is in the book,
"The First Computers--History and Architectures," MIT Press, eds. R. Rojas,
2000.  The relevant pages are online with Google Books here, starting on p121 of the book:
http://books.google.com/books?id=nDWPW9uwZPAC&dq=The+First+Computers--H…
The 207 page ENIAC patent is here:
http://www.scribd.com/doc/4960983/ENIAC-Patent-US3120606