What versions of Xilinx Foundation schematics are supported in Active-HDL?
NOTE: This solution is only applicable for Active-HDL 12.0 or older.
Schematics from Xilinx Foundation which are done in View Logic can be imported into Active-HDL and maintained as an Aldec Block Diagram.
Some earlier versions (pre-Foundation, 1.x series) of Xilinx schematics, are not supported by the import feature.