When I target a valid Virtex-5 part, the following error message occurs:
"ERROR:Data2MEM:74 - Unsupported FPGA device name 'xc5vlx85'.
Line #1, File "cmdString".
ISE 8.2.03i supports only Virtex 5 LX50 and LX50T."
There is currently no way to work around this issue.
Data2MEM will support all Virtex-5 LX and LXT parts in ISE 9.1i, which is scheduled for release in early 2007.