diff --git a/predecode.vhdl b/predecode.vhdl
index b3d956e..585626f 100644
--- a/predecode.vhdl
+++ b/predecode.vhdl
@@ -240,6 +240,7 @@ architecture behaviour of predecoder is
         2#0_00000_11010#  =>  INSN_cntlzw,
         2#0_10001_11010#  =>  INSN_cnttzd,
         2#0_10000_11010#  =>  INSN_cnttzw,
+        2#0_11010_00110#  =>  INSN_rnop, -- cpabort
         2#0_10111_10011#  =>  INSN_darn,
         2#0_00010_10110#  =>  INSN_dcbf,
         2#0_00001_10110#  =>  INSN_dcbst,