Beta version ready!
The beta version has been tested on a Gullwing development board from
Gennum.
For testing purpose, one 8KB RAM is connected as a slave on the DMA
wishbone.
Two slaves are connected to the CSR wishbone. One contains four status
registers, three with fixed values and one with the state of the
on-board DEBUG switches. The other slave have four control registers and
one of them is controlling the on-board LEDs.