from nmigen import Module
from nmigen.cli import main, verilog
-from nmutil.singlepipe import (ControlBase, SimpleHandshake, PassThroughStage)
-from nmutil.multipipe import CombMuxOutPipe
-from nmutil.multipipe import PriorityCombMuxInPipe
+from nmutil.singlepipe import ControlBase
from nmutil.concurrentunit import ReservationStations, num_bits
from ieee754.fpcommon.getop import FPADDBaseData