ERROR:Pack:1107 - Unable to combine the following symbols into a single IOB
ERROR:Pack:1107-UnabletocombinethefollowingsymbolsintoasingleIOBcomponent:PADsymbol\"fosc_j\"(PadSignal=fosc_j)BUFsymbol\"fosc_j_IBUF\"(OutputSignal=fosc_j_IBUF)Eachofthefollowingconstraintsspecifiesanillegal