instructions:
"band", "bclr", "biand", "bild", "bior", "bist", "bixor",
- "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and
- "mov.[bwl]"
+ "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", "ldc.w",
+ "stc.w" and "mov.[bwl]"
We may relax this into an 16-bit absolute address if it's in
the right range. */