For each instruction added which is part of the proposed standards, under the simulator a unit test is needed for that instruction.
see http://bugs.libre-riscv.org/show_bug.cgi?id=241#c7 https://github.com/lioncash/DolphinPPCTests https://github.com/JustinCB/macemu/blob/master/SheepShaver/src/kpx_cpu/src/test/test-powerpc.cpp (thanks lauri)
update to account for money assigned to bug #730