ERROR:Xst:880 - seq.v line 47: Cannot mix blocking and non blocking assignments on signal <count>.
ERROR:Xst:880 - seq.v line 48: Cannot mix blocking and non blocking assignments on signal <addr>.
ERROR:Xst:899 - seq.v line 17: The logic for <first> does not match a known FF or Latch template.
ERROR:Xst:899 - seq.v line 18: The logic for <last> does not match a known FF or Latch template.
ERROR:Xst:899 - seq.v line 48: The logic for <addr> does not match a known FF or Latch template.
ERROR:Xst:899 - seq.v line 47: The logic for <count> does not match a known FF or Latch template.