More than that however it is necessary to fit the usual Vector ISA
capabilities onto both Power ISA LD/ST with immediate and to
-LD/ST Indexed. They present subtly different Mode tables.
+LD/ST Indexed. They present subtly different Mode tables, which, due
+to lack of space, have the following quirks:
+
+* LD/ST Immediate has no individual control over src/dest zeroing,
+ whereas LD/ST Indexed does.
+* LD/ST Immediate has no Saturated Pack/Unpack (Arithmetic Mode does)
+* LD/ST Indexed has no Pack/Unpack (REMAP may be used instead)
# Format and fields