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Foundation: VHDL entry option is not selectable
VHDL is not a selectable option (grayed out) when starting
the HDL Editor or creating a symbol with the New Symbol
This is a licensing issue. The known causes are:
1) VHDL feature was not purchased.
2) Starting the Foundation Project Manager without a Xilinx
security key connected to the parallel port of the PC.
3) Incorrectly programmed or unprogrammed Xilinx security
You will need to quit and restart the Foundation Project
Manager with a correctly programmed security key on your PC's
You can check your key's programming from within the
Foundation Project Manager by selecting Applications ->
Keylock Utility. Both the Foundation and X-VHDL features
must be enabled.