add FCLK1
add dci logic
add refclk
fix interface
use correct assignment
use C2B correctly
use C2B correctly
fix type of io signal
remove _v from dci pins
import extraXilinxCells
Merge branch 'master' of github.com:cambridgehackers/xbsv
add clock generation setting
copy relevant code from testhdmidisplay.cpp