Keywords: library, Virtex-4, missing, find, symbol, schematic, implement, symbol, macro
If a Virtex-4 schematic design instantiates an obufe4 or obufe16 macro symbol, running any process on the schematic file(s) will produce an error similar to the following:
"Started process "View HDL Functional Model".
Error : Symbol Not Found: obufe16
Error : Symbol Not Found: obufe4"