measure_top.v: `ifdef ECP3VERSA chnage reset parameter by dip switches
dip[7:5] is frame_length
  000:64, 001:128, 010:256, 011:512, 100:768, 101:1024, 110:1280, 111:1518
dip[4:0] is inter_frame_gap
  IFG = (11 + 1 << dip_switch[4:0])