Hi - dje wrote: > So how about rephrase it as: > This is what the h/w first fetches to decode an insn. Dunno about that. > For non-liw architectures this is the size of the smallest instruction. If by "non-liw" you mean "RISC", then all instructions have the same size and this is trivial. For variable-length instruction sets, things just seem to work best when base-insn-size includes all the non-operand bits of the longest instruction. - FChE