Copyright (C) 2019 Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Copyright (C) 2019 Jacob Lifshay
-Relevant bugreport: http://bugs.libre-riscv.org/show_bug.cgi?id=99
+Relevant bugreports:
+* http://bugs.libre-riscv.org/show_bug.cgi?id=99
+* http://bugs.libre-riscv.org/show_bug.cgi?id=43
+* http://bugs.libre-riscv.org/show_bug.cgi?id=44
"""
from nmigen import Module, Signal, Elaboratable, Cat